source: trunk/mod_cacher/xc_cacher.c @ 1062

#if 0
#define XCACHE_DEBUG
#endif

#if 0
#define SHOW_DPRINT
#endif

/* {{{ macros */
#include "xc_cacher.h"
#include "xc_cache.h"
#include "xcache.h"
#include "xc_processor.h"
#include "xcache_globals.h"
#include "xcache/xc_extension.h"
#include "xcache/xc_ini.h"
#include "xcache/xc_utils.h"
#include "xcache/xc_sandbox.h"
#include "util/xc_trace.h"
#include "util/xc_vector.h"
#include "util/xc_align.h"

#include "php.h"
#include "ext/standard/info.h"
#include "ext/standard/md5.h"
#ifdef ZEND_ENGINE_2_1
#include "ext/date/php_date.h"
#endif
#include "ext/standard/php_math.h"
#include "SAPI.h"

#define ECALLOC_N(x, n) ((x) = ecalloc(n, sizeof((x)[0])))
#define ECALLOC_ONE(x) ECALLOC_N(x, 1)
#define VAR_ENTRY_EXPIRED(pentry) ((pentry)->ttl && XG(request_time) > (pentry)->ctime + (time_t) (pentry)->ttl)
#define CHECK(x, e) do { if ((x) == NULL) { zend_error(E_ERROR, "XCache: " e); goto err; } } while (0)
#define LOCK(x) xc_lock((x)->lck)
#define UNLOCK(x) xc_unlock((x)->lck)

#define ENTER_LOCK_EX(x) \
    xc_lock((x)->lck); \
    zend_try { \
        do
#define LEAVE_LOCK_EX(x) \
        while (0); \
    } zend_catch { \
        catched = 1; \
    } zend_end_try(); \
    xc_unlock((x)->lck)

#define ENTER_LOCK(x) do { \
    int catched = 0; \
    ENTER_LOCK_EX(x)
#define LEAVE_LOCK(x) \
    LEAVE_LOCK_EX(x); \
    if (catched) { \
        zend_bailout(); \
    } \
} while(0)
/* }}} */

struct _xc_hash_t { /* {{{ */
    size_t bits;
    size_t size;
    xc_hash_value_t mask;
};
/* }}} */
struct _xc_cached_t { /* {{{ stored in shm */
    int cacheid;

    time_t     compiling;
    zend_ulong updates;
    zend_ulong hits;
    zend_ulong clogs;
    zend_ulong ooms;
    zend_ulong errors;

    xc_entry_t **entries;
    int entries_count;
    xc_entry_data_php_t **phps;
    int phps_count;
    xc_entry_t *deletes;
    int deletes_count;

    time_t     last_gc_deletes;
    time_t     last_gc_expires;

    time_t     hits_by_hour_cur_time;
    zend_uint  hits_by_hour_cur_slot;
    zend_ulong hits_by_hour[24];
    time_t     hits_by_second_cur_time;
    zend_uint  hits_by_second_cur_slot;
    zend_ulong hits_by_second[5];
};
/* }}} */

/* {{{ globals */
static char *xc_shm_scheme = NULL;
static char *xc_mmap_path = NULL;

static zend_bool xc_admin_enable_auth = 1;
static xc_hash_t xc_php_hcache = { 0, 0, 0 };
static xc_hash_t xc_php_hentry = { 0, 0, 0 };
static xc_hash_t xc_var_hcache = { 0, 0, 0 };
static xc_hash_t xc_var_hentry = { 0, 0, 0 };

static zend_ulong xc_php_ttl    = 0;
static zend_ulong xc_var_maxttl = 0;

enum { xc_deletes_gc_interval = 120 };
static zend_ulong xc_php_gc_interval = 0;
static zend_ulong xc_var_gc_interval = 0;

/* total size */
static zend_ulong xc_php_size  = 0;
static zend_ulong xc_var_size  = 0;

static xc_cache_t *xc_php_caches = NULL;
static xc_cache_t *xc_var_caches = NULL;

static zend_bool xc_initized = 0;
static time_t xc_init_time = 0;
static long unsigned xc_init_instance_id = 0;
#ifdef ZTS
static long unsigned xc_init_instance_subid = 0;
#endif
static zend_compile_file_t *old_compile_file = NULL;

static zend_bool xc_readonly_protection = 0;

zend_bool xc_have_op_array_ctor = 0;

typedef enum { XC_TYPE_PHP, XC_TYPE_VAR } xc_entry_type_t;

/* TODO */
static inline zend_bool xc_cache_disabled()
{
    return 0;
}
/* }}} */

/* any function in *_unlocked is only safe be called within locked (single thread access) area */

static void xc_php_add_unlocked(xc_cached_t *cached, xc_entry_data_php_t *php) /* {{{ */
{
    xc_entry_data_php_t **head = &(cached->phps[php->hvalue]);
    php->next = *head;
    *head = php;
    cached->phps_count ++;
}
/* }}} */
static xc_entry_data_php_t *xc_php_store_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
    xc_entry_data_php_t *stored_php;

    php->hits     = 0;
    php->refcount = 0;
    stored_php = xc_processor_store_xc_entry_data_php_t(cache, php TSRMLS_CC);
    if (stored_php) {
        xc_php_add_unlocked(cache->cached, stored_php);
        return stored_php;
    }
    else {
        cache->cached->ooms ++;
        return NULL;
    }
}
/* }}} */
static xc_entry_data_php_t *xc_php_find_unlocked(xc_cached_t *cached, xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
    xc_entry_data_php_t *p;
    for (p = cached->phps[php->hvalue]; p; p = (xc_entry_data_php_t *) p->next) {
        if (memcmp(&php->md5.digest, &p->md5.digest, sizeof(php->md5.digest)) == 0) {
            p->hits ++;
            return p;
        }
    }
    return NULL;
}
/* }}} */
static void xc_php_free_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php) /* {{{ */
{
    cache->mem->handlers->free(cache->mem, (xc_entry_data_php_t *)php);
}
/* }}} */
static void xc_php_addref_unlocked(xc_entry_data_php_t *php) /* {{{ */
{
    php->refcount ++;
}
/* }}} */
static void xc_php_release_unlocked(xc_cache_t *cache, xc_entry_data_php_t *php) /* {{{ */
{
    if (-- php->refcount == 0) {
        xc_entry_data_php_t **pp = &(cache->cached->phps[php->hvalue]);
        xc_entry_data_php_t *p;
        for (p = *pp; p; pp = &(p->next), p = p->next) {
            if (memcmp(&php->md5.digest, &p->md5.digest, sizeof(php->md5.digest)) == 0) {
                /* unlink */
                *pp = p->next;
                xc_php_free_unlocked(cache, php);
                return;
            }
        }
        assert(0);
    }
}
/* }}} */

static inline int xc_entry_equal_unlocked(xc_entry_type_t type, const xc_entry_t *entry1, const xc_entry_t *entry2 TSRMLS_DC) /* {{{ */
{
    /* this function isn't required but can be in unlocked */
    switch (type) {
        case XC_TYPE_PHP:
            {
                const xc_entry_php_t *php_entry1 = (const xc_entry_php_t *) entry1;
                const xc_entry_php_t *php_entry2 = (const xc_entry_php_t *) entry2;
                if (php_entry1->file_inode && php_entry2->file_inode) {
                    zend_bool inodeIsSame = php_entry1->file_inode == php_entry2->file_inode
                                         && php_entry1->file_device == php_entry2->file_device;
                    if (XG(experimental)) {
                        /* new experimental behavior: quick check by inode, first */
                        if (!inodeIsSame) {
                            return 0;
                        }

                        /* and then opened_path compare */
                    }
                    else {
                        /* old behavior: inode check only */
                        return inodeIsSame;
                    }
                }
            }

            assert(IS_ABSOLUTE_PATH(entry1->name.str.val, entry1->name.str.len));
            assert(IS_ABSOLUTE_PATH(entry2->name.str.val, entry2->name.str.len));

            return entry1->name.str.len == entry2->name.str.len
                && memcmp(entry1->name.str.val, entry2->name.str.val, entry1->name.str.len + 1) == 0;

        case XC_TYPE_VAR:
#ifdef IS_UNICODE
            if (entry1->name_type != entry2->name_type) {
                return 0;
            }

            if (entry1->name_type == IS_UNICODE) {
                return entry1->name.ustr.len == entry2->name.ustr.len
                    && memcmp(entry1->name.ustr.val, entry2->name.ustr.val, (entry1->name.ustr.len + 1) * sizeof(UChar)) == 0;
            }
#endif
            return entry1->name.str.len == entry2->name.str.len
                && memcmp(entry1->name.str.val, entry2->name.str.val, entry1->name.str.len + 1) == 0;
            break;

        default:
            assert(0);
    }
    return 0;
}
/* }}} */
static inline int xc_entry_has_prefix_unlocked(xc_entry_type_t type, xc_entry_t *entry, zval *prefix) /* {{{ */
{
    /* this function isn't required but can be in unlocked */

#ifdef IS_UNICODE
    if (entry->name_type != prefix->type) {
        return 0;
    }

    if (entry->name_type == IS_UNICODE) {
        if (entry->name.ustr.len < Z_USTRLEN_P(prefix)) {
            return 0;
        }
        return memcmp(entry->name.ustr.val, Z_USTRVAL_P(prefix), Z_USTRLEN_P(prefix) * sizeof(UChar)) == 0;
    }
#endif
    if (prefix->type != IS_STRING) {
        return 0;
    }

    if (entry->name.str.len < Z_STRLEN_P(prefix)) {
        return 0;
    }

    return memcmp(entry->name.str.val, Z_STRVAL_P(prefix), Z_STRLEN_P(prefix)) == 0;
}
/* }}} */
static void xc_entry_add_unlocked(xc_cached_t *cached, xc_hash_value_t entryslotid, xc_entry_t *entry) /* {{{ */
{
    xc_entry_t **head = &(cached->entries[entryslotid]);
    entry->next = *head;
    *head = entry;
    cached->entries_count ++;
}
/* }}} */
static xc_entry_t *xc_entry_store_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
    xc_entry_t *stored_entry;

    entry->hits  = 0;
    entry->ctime = XG(request_time);
    entry->atime = XG(request_time);
    stored_entry = type == XC_TYPE_PHP
        ? (xc_entry_t *) xc_processor_store_xc_entry_php_t(cache, (xc_entry_php_t *) entry TSRMLS_CC)
        : (xc_entry_t *) xc_processor_store_xc_entry_var_t(cache, (xc_entry_var_t *) entry TSRMLS_CC);
    if (stored_entry) {
        xc_entry_add_unlocked(cache->cached, entryslotid, stored_entry);
        ++cache->cached->updates;
        return stored_entry;
    }
    else {
        cache->cached->ooms ++;
        return NULL;
    }
}
/* }}} */
static xc_entry_php_t *xc_entry_php_store_unlocked(xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
    return (xc_entry_php_t *) xc_entry_store_unlocked(XC_TYPE_PHP, cache, entryslotid, (xc_entry_t *) entry_php TSRMLS_CC);
}
/* }}} */
static xc_entry_var_t *xc_entry_var_store_unlocked(xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_var_t *entry_var TSRMLS_DC) /* {{{ */
{
    return (xc_entry_var_t *) xc_entry_store_unlocked(XC_TYPE_VAR, cache, entryslotid, (xc_entry_t *) entry_var TSRMLS_CC);
}
/* }}} */
static void xc_entry_free_real_unlocked(xc_entry_type_t type, xc_cache_t *cache, volatile xc_entry_t *entry) /* {{{ */
{
    if (type == XC_TYPE_PHP) {
        xc_php_release_unlocked(cache, ((xc_entry_php_t *) entry)->php);
    }
    cache->mem->handlers->free(cache->mem, (xc_entry_t *)entry);
}
/* }}} */
static void xc_entry_free_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
    cache->cached->entries_count --;
    if ((type == XC_TYPE_PHP ? ((xc_entry_php_t *) entry)->refcount : 0) == 0) {
        xc_entry_free_real_unlocked(type, cache, entry);
    }
    else {
        entry->next = cache->cached->deletes;
        cache->cached->deletes = entry;
        entry->dtime = XG(request_time);
        cache->cached->deletes_count ++;
    }
    return;
}
/* }}} */
static void xc_entry_remove_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
    xc_entry_t **pp = &(cache->cached->entries[entryslotid]);
    xc_entry_t *p;
    for (p = *pp; p; pp = &(p->next), p = p->next) {
        if (xc_entry_equal_unlocked(type, entry, p TSRMLS_CC)) {
            /* unlink */
            *pp = p->next;
            xc_entry_free_unlocked(type, cache, entry TSRMLS_CC);
            return;
        }
    }
    assert(0);
}
/* }}} */
static xc_entry_t *xc_entry_find_unlocked(xc_entry_type_t type, xc_cache_t *cache, xc_hash_value_t entryslotid, xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
    xc_entry_t *p;
    for (p = cache->cached->entries[entryslotid]; p; p = p->next) {
        if (xc_entry_equal_unlocked(type, entry, p TSRMLS_CC)) {
            zend_bool fresh;
            switch (type) {
            case XC_TYPE_PHP:
                {
                    xc_entry_php_t *p_php = (xc_entry_php_t *) p;
                    xc_entry_php_t *entry_php = (xc_entry_php_t *) entry;
                    fresh = p_php->file_mtime == entry_php->file_mtime && p_php->file_size == entry_php->file_size;
                }
                break;

            case XC_TYPE_VAR:
                {
                    fresh = !VAR_ENTRY_EXPIRED(p);
                }
                break;

            default:
                assert(0);
            }

            if (fresh) {
                p->hits ++;
                p->atime = XG(request_time);
                return p;
            }

            xc_entry_remove_unlocked(type, cache, entryslotid, p TSRMLS_CC);
            return NULL;
        }
    }
    return NULL;
}
/* }}} */
static void xc_entry_hold_php_unlocked(xc_cache_t *cache, xc_entry_php_t *entry TSRMLS_DC) /* {{{ */
{
    TRACE("hold %d:%s", entry->file_inode, entry->entry.name.str.val);
    entry->refcount ++;
    xc_stack_push(&XG(php_holds)[cache->cacheid], (void *)entry);
}
/* }}} */
static inline zend_uint advance_wrapped(zend_uint val, zend_uint count) /* {{{ */
{
    if (val + 1 >= count) {
        return 0;
    }
    return val + 1;
}
/* }}} */
static inline void xc_counters_inc(time_t *curtime, zend_uint *curslot, time_t interval, zend_ulong *counters, zend_uint count TSRMLS_DC) /* {{{ */
{
    time_t n = XG(request_time) / interval;
    if (*curtime != n) {
        zend_uint target_slot = n % count;
        zend_uint slot;
        for (slot = advance_wrapped(*curslot, count);
                slot != target_slot;
                slot = advance_wrapped(slot, count)) {
            counters[slot] = 0;
        }
        counters[target_slot] = 0;
        *curtime = n;
        *curslot = target_slot;
    }
    counters[*curslot] ++;
}
/* }}} */
static inline void xc_cached_hit_unlocked(xc_cached_t *cached TSRMLS_DC) /* {{{ */
{
    cached->hits ++;

    xc_counters_inc(&cached->hits_by_hour_cur_time
            , &cached->hits_by_hour_cur_slot, 60 * 60
            , cached->hits_by_hour
            , sizeof(cached->hits_by_hour) / sizeof(cached->hits_by_hour[0])
            TSRMLS_CC);

    xc_counters_inc(&cached->hits_by_second_cur_time
            , &cached->hits_by_second_cur_slot, 1
            , cached->hits_by_second
            , sizeof(cached->hits_by_second) / sizeof(cached->hits_by_second[0])
            TSRMLS_CC);
}
/* }}} */

/* helper function that loop through each entry */
#define XC_ENTRY_APPLY_FUNC(name) zend_bool name(xc_entry_t *entry TSRMLS_DC)
typedef XC_ENTRY_APPLY_FUNC((*cache_apply_unlocked_func_t));
static void xc_entry_apply_unlocked(xc_entry_type_t type, xc_cache_t *cache, cache_apply_unlocked_func_t apply_func TSRMLS_DC) /* {{{ */
{
    xc_entry_t *p, **pp;
    int i, c;

    for (i = 0, c = cache->hentry->size; i < c; i ++) {
        pp = &(cache->cached->entries[i]);
        for (p = *pp; p; p = *pp) {
            if (apply_func(p TSRMLS_CC)) {
                /* unlink */
                *pp = p->next;
                xc_entry_free_unlocked(type, cache, p TSRMLS_CC);
            }
            else {
                pp = &(p->next);
            }
        }
    }
}
/* }}} */

#define XC_CACHE_APPLY_FUNC(name) void name(xc_cache_t *cache TSRMLS_DC)
/* call graph:
 * xc_gc_expires_php -> xc_gc_expires_one -> xc_entry_apply_unlocked -> xc_gc_expires_php_entry_unlocked
 * xc_gc_expires_var -> xc_gc_expires_one -> xc_entry_apply_unlocked -> xc_gc_expires_var_entry_unlocked
 */
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_php_entry_unlocked) /* {{{ */
{
    TRACE("ttl %lu, %lu %lu", (zend_ulong) XG(request_time), (zend_ulong) entry->atime, xc_php_ttl);
    if (XG(request_time) > entry->atime + (time_t) xc_php_ttl) {
        return 1;
    }
    return 0;
}
/* }}} */
static XC_ENTRY_APPLY_FUNC(xc_gc_expires_var_entry_unlocked) /* {{{ */
{
    if (VAR_ENTRY_EXPIRED(entry)) {
        return 1;
    }
    return 0;
}
/* }}} */
static void xc_gc_expires_one(xc_entry_type_t type, xc_cache_t *cache, zend_ulong gc_interval, cache_apply_unlocked_func_t apply_func TSRMLS_DC) /* {{{ */
{
    TRACE("interval %lu, %lu %lu", (zend_ulong) XG(request_time), (zend_ulong) cache->cached->last_gc_expires, gc_interval);
    if (XG(request_time) >= cache->cached->last_gc_expires + (time_t) gc_interval) {
        ENTER_LOCK(cache) {
            if (XG(request_time) >= cache->cached->last_gc_expires + (time_t) gc_interval) {
                cache->cached->last_gc_expires = XG(request_time);
                xc_entry_apply_unlocked(type, cache, apply_func TSRMLS_CC);
            }
        } LEAVE_LOCK(cache);
    }
}
/* }}} */
static void xc_gc_expires_php(TSRMLS_D) /* {{{ */
{
    int i, c;

    if (!xc_php_ttl || !xc_php_gc_interval || !xc_php_caches) {
        return;
    }

    for (i = 0, c = xc_php_hcache.size; i < c; i ++) {
        xc_gc_expires_one(XC_TYPE_PHP, &xc_php_caches[i], xc_php_gc_interval, xc_gc_expires_php_entry_unlocked TSRMLS_CC);
    }
}
/* }}} */
static void xc_gc_expires_var(TSRMLS_D) /* {{{ */
{
    int i, c;

    if (!xc_var_gc_interval || !xc_var_caches) {
        return;
    }

    for (i = 0, c = xc_var_hcache.size; i < c; i ++) {
        xc_gc_expires_one(XC_TYPE_VAR, &xc_var_caches[i], xc_var_gc_interval, xc_gc_expires_var_entry_unlocked TSRMLS_CC);
    }
}
/* }}} */

static XC_CACHE_APPLY_FUNC(xc_gc_delete_unlocked) /* {{{ */
{
    xc_entry_t *p, **pp;

    pp = &cache->cached->deletes;
    for (p = *pp; p; p = *pp) {
        xc_entry_php_t *entry = (xc_entry_php_t *) p;
        if (XG(request_time) - p->dtime > 3600) {
            entry->refcount = 0;
            /* issue warning here */
        }
        if (entry->refcount == 0) {
            /* unlink */
            *pp = p->next;
            cache->cached->deletes_count --;
            xc_entry_free_real_unlocked(XC_TYPE_PHP, cache, p);
        }
        else {
            pp = &(p->next);
        }
    }
}
/* }}} */
static XC_CACHE_APPLY_FUNC(xc_gc_deletes_one) /* {{{ */
{
    if (cache->cached->deletes && XG(request_time) - cache->cached->last_gc_deletes > xc_deletes_gc_interval) {
        ENTER_LOCK(cache) {
            if (cache->cached->deletes && XG(request_time) - cache->cached->last_gc_deletes > xc_deletes_gc_interval) {
                cache->cached->last_gc_deletes = XG(request_time);
                xc_gc_delete_unlocked(cache TSRMLS_CC);
            }
        } LEAVE_LOCK(cache);
    }
}
/* }}} */
static void xc_gc_deletes(TSRMLS_D) /* {{{ */
{
    int i, c;

    if (xc_php_caches) {
        for (i = 0, c = xc_php_hcache.size; i < c; i ++) {
            xc_gc_deletes_one(&xc_php_caches[i] TSRMLS_CC);
        }
    }

    if (xc_var_caches) {
        for (i = 0, c = xc_var_hcache.size; i < c; i ++) {
            xc_gc_deletes_one(&xc_var_caches[i] TSRMLS_CC);
        }
    }
}
/* }}} */

/* helper functions for user functions */
static void xc_fillinfo_unlocked(int cachetype, xc_cache_t *cache, zval *return_value TSRMLS_DC) /* {{{ */
{
    zval *blocks, *hits;
    size_t i;
    const xc_block_t *b;
#ifndef NDEBUG
    xc_memsize_t avail = 0;
#endif
    const xc_mem_t *mem = cache->mem;
    const xc_mem_handlers_t *handlers = mem->handlers;
    zend_ulong interval;
    const xc_cached_t *cached = cache->cached;

    if (cachetype == XC_TYPE_PHP) {
        interval = xc_php_ttl ? xc_php_gc_interval : 0;
    }
    else {
        interval = xc_var_gc_interval;
    }

    add_assoc_long_ex(return_value, ZEND_STRS("slots"),     cache->hentry->size);
    add_assoc_long_ex(return_value, ZEND_STRS("compiling"), cached->compiling);
    add_assoc_long_ex(return_value, ZEND_STRS("updates"),   cached->updates);
    add_assoc_long_ex(return_value, ZEND_STRS("misses"),    cached->updates); /* deprecated */
    add_assoc_long_ex(return_value, ZEND_STRS("hits"),      cached->hits);
    add_assoc_long_ex(return_value, ZEND_STRS("clogs"),     cached->clogs);
    add_assoc_long_ex(return_value, ZEND_STRS("ooms"),      cached->ooms);
    add_assoc_long_ex(return_value, ZEND_STRS("errors"),    cached->errors);

    add_assoc_long_ex(return_value, ZEND_STRS("cached"),    cached->entries_count);
    add_assoc_long_ex(return_value, ZEND_STRS("deleted"),   cached->deletes_count);
    if (interval) {
        time_t gc = (cached->last_gc_expires + interval) - XG(request_time);
        add_assoc_long_ex(return_value, ZEND_STRS("gc"),    gc > 0 ? gc : 0);
    }
    else {
        add_assoc_null_ex(return_value, ZEND_STRS("gc"));
    }
    MAKE_STD_ZVAL(hits);
    array_init(hits);
    for (i = 0; i < sizeof(cached->hits_by_hour) / sizeof(cached->hits_by_hour[0]); i ++) {
        add_next_index_long(hits, (long) cached->hits_by_hour[i]);
    }
    add_assoc_zval_ex(return_value, ZEND_STRS("hits_by_hour"), hits);

    MAKE_STD_ZVAL(hits);
    array_init(hits);
    for (i = 0; i < sizeof(cached->hits_by_second) / sizeof(cached->hits_by_second[0]); i ++) {
        add_next_index_long(hits, (long) cached->hits_by_second[i]);
    }
    add_assoc_zval_ex(return_value, ZEND_STRS("hits_by_second"), hits);

    MAKE_STD_ZVAL(blocks);
    array_init(blocks);

    add_assoc_long_ex(return_value, ZEND_STRS("size"),  handlers->size(mem));
    add_assoc_long_ex(return_value, ZEND_STRS("avail"), handlers->avail(mem));
    add_assoc_bool_ex(return_value, ZEND_STRS("can_readonly"), xc_readonly_protection);

    for (b = handlers->freeblock_first(mem); b; b = handlers->freeblock_next(b)) {
        zval *bi;

        MAKE_STD_ZVAL(bi);
        array_init(bi);

        add_assoc_long_ex(bi, ZEND_STRS("size"),   handlers->block_size(b));
        add_assoc_long_ex(bi, ZEND_STRS("offset"), handlers->block_offset(mem, b));
        add_next_index_zval(blocks, bi);
#ifndef NDEBUG
        avail += handlers->block_size(b);
#endif
    }
    add_assoc_zval_ex(return_value, ZEND_STRS("free_blocks"), blocks);
#ifndef NDEBUG
    assert(avail == handlers->avail(mem));
#endif
}
/* }}} */
static void xc_fillentry_unlocked(xc_entry_type_t type, const xc_entry_t *entry, xc_hash_value_t entryslotid, int del, zval *list TSRMLS_DC) /* {{{ */
{
    zval* ei;
    const xc_entry_data_php_t *php;

    ALLOC_INIT_ZVAL(ei);
    array_init(ei);

    add_assoc_long_ex(ei, ZEND_STRS("hits"),     entry->hits);
    add_assoc_long_ex(ei, ZEND_STRS("ctime"),    entry->ctime);
    add_assoc_long_ex(ei, ZEND_STRS("atime"),    entry->atime);
    add_assoc_long_ex(ei, ZEND_STRS("hvalue"),   entryslotid);
    if (del) {
        add_assoc_long_ex(ei, ZEND_STRS("dtime"), entry->dtime);
    }
#ifdef IS_UNICODE
    do {
        zval *zv;
        ALLOC_INIT_ZVAL(zv);
        switch (entry->name_type) {
            case IS_UNICODE:
                ZVAL_UNICODEL(zv, entry->name.ustr.val, entry->name.ustr.len, 1);
                break;
            case IS_STRING:
                ZVAL_STRINGL(zv, entry->name.str.val, entry->name.str.len, 1);
                break;
            default:
                assert(0);
        }
        zv->type = entry->name_type;
        add_assoc_zval_ex(ei, ZEND_STRS("name"), zv);
    } while (0);
#else
    add_assoc_stringl_ex(ei, ZEND_STRS("name"), entry->name.str.val, entry->name.str.len, 1);
#endif
    switch (type) {
        case XC_TYPE_PHP: {
            xc_entry_php_t *entry_php = (xc_entry_php_t *) entry;
            php = entry_php->php;
            add_assoc_long_ex(ei, ZEND_STRS("size"),          entry->size + php->size);
            add_assoc_long_ex(ei, ZEND_STRS("refcount"),      entry_php->refcount);
            add_assoc_long_ex(ei, ZEND_STRS("phprefcount"),   php->refcount);
            add_assoc_long_ex(ei, ZEND_STRS("file_mtime"),    entry_php->file_mtime);
            add_assoc_long_ex(ei, ZEND_STRS("file_size"),     entry_php->file_size);
            add_assoc_long_ex(ei, ZEND_STRS("file_device"),   entry_php->file_device);
            add_assoc_long_ex(ei, ZEND_STRS("file_inode"),    entry_php->file_inode);

#ifdef HAVE_XCACHE_CONSTANT
            add_assoc_long_ex(ei, ZEND_STRS("constinfo_cnt"), php->constinfo_cnt);
#endif
            add_assoc_long_ex(ei, ZEND_STRS("function_cnt"),  php->funcinfo_cnt);
            add_assoc_long_ex(ei, ZEND_STRS("class_cnt"),     php->classinfo_cnt);
#ifdef ZEND_ENGINE_2_1
            add_assoc_long_ex(ei, ZEND_STRS("autoglobal_cnt"),php->autoglobal_cnt);
#endif
            break;
        }

        case XC_TYPE_VAR:
            add_assoc_long_ex(ei, ZEND_STRS("refcount"),      0); /* for BC only */
            add_assoc_long_ex(ei, ZEND_STRS("size"),          entry->size);
            break;

        default:
            assert(0);
    }

    add_next_index_zval(list, ei);
}
/* }}} */
static void xc_filllist_unlocked(xc_entry_type_t type, xc_cache_t *cache, zval *return_value TSRMLS_DC) /* {{{ */
{
    zval* list;
    int i, c;
    xc_entry_t *e;

    ALLOC_INIT_ZVAL(list);
    array_init(list);

    for (i = 0, c = cache->hentry->size; i < c; i ++) {
        for (e = cache->cached->entries[i]; e; e = e->next) {
            xc_fillentry_unlocked(type, e, i, 0, list TSRMLS_CC);
        }
    }
    add_assoc_zval(return_value, "cache_list", list);

    ALLOC_INIT_ZVAL(list);
    array_init(list);
    for (e = cache->cached->deletes; e; e = e->next) {
        xc_fillentry_unlocked(XC_TYPE_PHP, e, 0, 1, list TSRMLS_CC);
    }
    add_assoc_zval(return_value, "deleted_list", list);
}
/* }}} */

static zend_op_array *xc_entry_install(xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
    zend_uint i;
    xc_entry_data_php_t *p = entry_php->php;
    zend_op_array *old_active_op_array = CG(active_op_array);
#ifndef ZEND_ENGINE_2
    ALLOCA_FLAG(use_heap)
    /* new ptr which is stored inside CG(class_table) */
    xc_cest_t **new_cest_ptrs = (xc_cest_t **)my_do_alloca(sizeof(xc_cest_t*) * p->classinfo_cnt, use_heap);
#endif

    CG(active_op_array) = p->op_array;

#ifdef HAVE_XCACHE_CONSTANT
    /* install constant */
    for (i = 0; i < p->constinfo_cnt; i ++) {
        xc_constinfo_t *ci = &p->constinfos[i];
        xc_install_constant(entry_php->entry.name.str.val, &ci->constant,
                UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
    }
#endif

    /* install function */
    for (i = 0; i < p->funcinfo_cnt; i ++) {
        xc_funcinfo_t  *fi = &p->funcinfos[i];
        xc_install_function(entry_php->entry.name.str.val, &fi->func,
                UNISW(0, fi->type), fi->key, fi->key_size, fi->h TSRMLS_CC);
    }

    /* install class */
    for (i = 0; i < p->classinfo_cnt; i ++) {
        xc_classinfo_t *ci = &p->classinfos[i];
#ifndef ZEND_ENGINE_2
        zend_class_entry *ce = CestToCePtr(ci->cest);
        /* fix pointer to the be which inside class_table */
        if (ce->parent) {
            zend_uint class_idx = (/* class_num */ (int) (long) ce->parent) - 1;
            assert(class_idx < i);
            ci->cest.parent = new_cest_ptrs[class_idx];
        }
        new_cest_ptrs[i] =
#endif
#ifdef ZEND_COMPILE_DELAYED_BINDING
        xc_install_class(entry_php->entry.name.str.val, &ci->cest, -1,
                UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
#else
        xc_install_class(entry_php->entry.name.str.val, &ci->cest, ci->oplineno,
                UNISW(0, ci->type), ci->key, ci->key_size, ci->h TSRMLS_CC);
#endif
    }

#ifdef ZEND_ENGINE_2_1
    /* trigger auto_globals jit */
    for (i = 0; i < p->autoglobal_cnt; i ++) {
        xc_autoglobal_t *aginfo = &p->autoglobals[i];
        zend_u_is_auto_global(aginfo->type, aginfo->key, aginfo->key_len TSRMLS_CC);
    }
#endif
#ifdef XCACHE_ERROR_CACHING
    /* restore trigger errors */
    for (i = 0; i < p->compilererror_cnt; i ++) {
        xc_compilererror_t *error = &p->compilererrors[i];
        CG(zend_lineno) = error->lineno;
        zend_error(error->type, "%s", error->error);
    }
    CG(zend_lineno) = 0;
#endif

    i = 1;
#ifndef ZEND_ENGINE_2_2
    zend_hash_add(&EG(included_files), entry_php->entry.name.str.val, entry_php->entry.name.str.len+1, (void *)&i, sizeof(int), NULL);
#endif

#ifndef ZEND_ENGINE_2
    my_free_alloca(new_cest_ptrs, use_heap);
#endif
    CG(active_op_array) = old_active_op_array;
    return p->op_array;
}
/* }}} */

static inline void xc_entry_unholds_real(xc_stack_t *holds, xc_cache_t *caches, int cachecount TSRMLS_DC) /* {{{ */
{
    int i;
    xc_stack_t *s;
    xc_cache_t *cache;
    xc_entry_php_t *entry_php;

    for (i = 0; i < cachecount; i ++) {
        s = &holds[i];
        TRACE("holded %d items", xc_stack_count(s));
        if (xc_stack_count(s)) {
            cache = &caches[i];
            ENTER_LOCK(cache) {
                while (xc_stack_count(s)) {
                    entry_php = (xc_entry_php_t *) xc_stack_pop(s);
                    TRACE("unhold %d:%s", entry_php->file_inode, entry_php->entry.name.str.val);
                    assert(entry_php->refcount > 0);
                    --entry_php->refcount;
                }
            } LEAVE_LOCK(cache);
        }
    }
}
/* }}} */
static void xc_entry_unholds(TSRMLS_D) /* {{{ */
{
    if (xc_php_caches) {
        xc_entry_unholds_real(XG(php_holds), xc_php_caches, xc_php_hcache.size TSRMLS_CC);
    }

    if (xc_var_caches) {
        xc_entry_unholds_real(XG(var_holds), xc_var_caches, xc_var_hcache.size TSRMLS_CC);
    }
}
/* }}} */

#define HASH(i) (i)
#define HASH_ZSTR_L(t, s, l) HASH(zend_u_inline_hash_func((t), (s), ((l) + 1) * sizeof(UChar)))
#define HASH_STR_S(s, l) HASH(zend_inline_hash_func((char *) (s), (l)))
#define HASH_STR_L(s, l) HASH_STR_S((s), (l) + 1)
#define HASH_STR(s) HASH_STR_L((s), strlen((s)) + 1)
#define HASH_NUM(n) HASH(n)
static inline xc_hash_value_t xc_hash_fold(xc_hash_value_t hvalue, const xc_hash_t *hasher) /* {{{ fold hash bits as needed */
{
    xc_hash_value_t folded = 0;
    while (hvalue) {
        folded ^= (hvalue & hasher->mask);
        hvalue >>= hasher->bits;
    }
    return folded;
}
/* }}} */
static inline xc_hash_value_t xc_entry_hash_name(xc_entry_t *entry TSRMLS_DC) /* {{{ */
{
    return UNISW(NOTHING, UG(unicode) ? HASH_ZSTR_L(entry->name_type, entry->name.uni.val, entry->name.uni.len) :)
        HASH_STR_L(entry->name.str.val, entry->name.str.len);
}
/* }}} */
#define xc_entry_hash_var xc_entry_hash_name
static void xc_entry_free_key_php(xc_entry_php_t *entry_php TSRMLS_DC) /* {{{ */
{
#define X_FREE(var) do {\
    if (entry_php->var) { \
        efree(entry_php->var); \
    } \
} while (0)
    X_FREE(dirpath);
#ifdef IS_UNICODE
    X_FREE(ufilepath);
    X_FREE(udirpath);
#endif

#undef X_FREE
}
/* }}} */
static char *xc_expand_url(const char *filepath, char *real_path TSRMLS_DC) /* {{{ */
{
    if (strstr(filepath, "://") != NULL) {
        size_t filepath_len = strlen(filepath);
        size_t copy_len = filepath_len > MAXPATHLEN - 1 ? MAXPATHLEN - 1 : filepath_len;
        memcpy(real_path, filepath, filepath_len);
        real_path[copy_len] = '\0';
        return real_path;
    }
    return expand_filepath(filepath, real_path TSRMLS_CC);
}
/* }}} */

#define XC_RESOLVE_PATH_CHECKER(name) zend_bool name(const char *filepath, size_t filepath_len, void *data TSRMLS_DC)
typedef XC_RESOLVE_PATH_CHECKER((*xc_resolve_path_checker_func_t));
static zend_bool xc_resolve_path(const char *filepath, char *path_buffer, xc_resolve_path_checker_func_t checker_func, void *data TSRMLS_DC) /* {{{ */
{
    char *paths, *path;
    char *tokbuf;
    size_t path_buffer_len;
    int size;
    char tokens[] = { DEFAULT_DIR_SEPARATOR, '\0' };
    int ret;
    ALLOCA_FLAG(use_heap)

#if 0
    if ((*filepath == '.' && 
         (IS_SLASH(filepath[1]) || 
          ((filepath[1] == '.') && IS_SLASH(filepath[2])))) ||
        IS_ABSOLUTE_PATH(filepath, strlen(filepath)) ||
        !path ||
        !*path) {

        if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
            ret = 1;
        }
        else {
            ret = FAILURE;
        }
        goto finish;
    }
#endif

    size = strlen(PG(include_path)) + 1;
    paths = (char *)my_do_alloca(size, use_heap);
    memcpy(paths, PG(include_path), size);

    for (path = php_strtok_r(paths, tokens, &tokbuf); path; path = php_strtok_r(NULL, tokens, &tokbuf)) {
        path_buffer_len = snprintf(path_buffer, MAXPATHLEN, "%s/%s", path, filepath);
        if (path_buffer_len < MAXPATHLEN - 1) {
            if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
                ret = 1;
                goto finish;
            }
        }
    }

    /* fall back to current directory */
    if (zend_is_executing(TSRMLS_C)) {
        const char *executed_filename = zend_get_executed_filename(TSRMLS_C);
        if (executed_filename && executed_filename[0] && executed_filename[0] != '[') {
            size_t filename_len = strlen(filepath);
            size_t dirname_len;

            for (dirname_len = strlen(executed_filename) - 1; dirname_len > 0; --dirname_len) {
                if (IS_SLASH(executed_filename[dirname_len])) {
                    if (dirname_len + filename_len < MAXPATHLEN - 1) {
                        ++dirname_len; /* include tailing slash */
                        memcpy(path_buffer, executed_filename, dirname_len);
                        memcpy(path_buffer + dirname_len, filepath, filename_len);
                        path_buffer_len = dirname_len + filename_len;
                        path_buffer[path_buffer_len] = '\0';
                        if (checker_func(path_buffer, path_buffer_len, data TSRMLS_CC)) {
                            ret = 1;
                            goto finish;
                        }
                    }
                    break;
                }
            }
        }
    }

    ret = 0;

finish:
    my_free_alloca(paths, use_heap);

    return ret;
}
/* }}} */
#ifndef ZEND_ENGINE_2_3
static XC_RESOLVE_PATH_CHECKER(xc_stat_file) /* {{{ */
{
    return VCWD_STAT(filepath, (struct stat *) data) == 0 ? 1 : 0;
}
/* }}} */
static int xc_resolve_path_stat(const char *filepath, char *path_buffer, struct stat *pbuf TSRMLS_DC) /* {{{ */
{
    return xc_resolve_path(filepath, path_buffer, xc_stat_file, (void *) pbuf TSRMLS_CC)
        ? SUCCESS
        : FAILURE;
}
/* }}} */
#endif
typedef struct xc_compiler_t { /* {{{ */
    /* XCache cached compile state */
    const char *filename;
    size_t filename_len;
    const char *opened_path;
    char opened_path_buffer[MAXPATHLEN];

    xc_entry_hash_t entry_hash;
    xc_entry_php_t new_entry;
    xc_entry_data_php_t new_php;
} xc_compiler_t;
/* }}} */
typedef struct xc_entry_resolve_path_data_t { /* {{{ */
    xc_compiler_t *compiler;
    xc_entry_php_t **stored_entry;
} xc_entry_resolve_path_data_t;
/* }}} */
static XC_RESOLVE_PATH_CHECKER(xc_entry_resolve_path_func_unlocked) /* {{{ */
{
    xc_entry_resolve_path_data_t *entry_resolve_path_data = (xc_entry_resolve_path_data_t *) data;
    xc_compiler_t *compiler = entry_resolve_path_data->compiler;

    compiler->new_entry.entry.name.str.val = xc_expand_url(filepath, compiler->opened_path_buffer TSRMLS_CC);
    compiler->new_entry.entry.name.str.len = strlen(compiler->new_entry.entry.name.str.val);

    *entry_resolve_path_data->stored_entry = (xc_entry_php_t *) xc_entry_find_unlocked(
            XC_TYPE_PHP
            , &xc_php_caches[compiler->entry_hash.cacheid]
            , compiler->entry_hash.entryslotid
            , (xc_entry_t *) &compiler->new_entry
            TSRMLS_CC);

    return *entry_resolve_path_data->stored_entry ? 1 : 0;
}
/* }}} */
static int xc_entry_resolve_path_unlocked(xc_compiler_t *compiler, const char *filepath, xc_entry_php_t **stored_entry TSRMLS_DC) /* {{{ */
{
    char path_buffer[MAXPATHLEN];
    xc_entry_resolve_path_data_t entry_resolve_path_data;
    entry_resolve_path_data.compiler = compiler;
    entry_resolve_path_data.stored_entry = stored_entry;

    return xc_resolve_path(filepath, path_buffer, xc_entry_resolve_path_func_unlocked, (void *) &entry_resolve_path_data TSRMLS_CC)
        ? SUCCESS
        : FAILURE;
}
/* }}} */
static int xc_entry_php_quick_resolve_opened_path(xc_compiler_t *compiler, struct stat *statbuf TSRMLS_DC) /* {{{ */
{
    if (strcmp(SG(request_info).path_translated, compiler->filename) == 0) {
        /* sapi has already done this stat() for us */
        if (statbuf) {
            struct stat *sapi_stat = sapi_get_stat(TSRMLS_C);
            if (!sapi_stat) {
                goto giveupsapistat;
            }
            *statbuf = *sapi_stat;
        }

        compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
        return SUCCESS;
    }
giveupsapistat:

    /* absolute path */
    if (IS_ABSOLUTE_PATH(compiler->filename, strlen(compiler->filename))) {
        if (statbuf && VCWD_STAT(compiler->filename, statbuf) != 0) {
            return FAILURE;
        }
        compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
        return SUCCESS;
    }

    /* relative path */
    if (*compiler->filename == '.' && (IS_SLASH(compiler->filename[1]) || compiler->filename[1] == '.')) {
        const char *ptr = compiler->filename + 1;
        if (*ptr == '.') {
            while (*(++ptr) == '.');
            if (!IS_SLASH(*ptr)) {
                return FAILURE;
            }   
        }

        if (statbuf && VCWD_STAT(compiler->filename, statbuf) != 0) {
            return FAILURE;
        }

        compiler->opened_path = xc_expand_url(compiler->filename, compiler->opened_path_buffer TSRMLS_CC);
        return SUCCESS;
    }

    return FAILURE;
}
/* }}} */
static int xc_entry_php_resolve_opened_path(xc_compiler_t *compiler, struct stat *statbuf TSRMLS_DC) /* {{{ */
{
    if (xc_entry_php_quick_resolve_opened_path(compiler, statbuf TSRMLS_CC) == SUCCESS) {
        /* opened_path resolved */
        return SUCCESS;
    }
    /* fall back to real stat call */
    else {
#ifdef ZEND_ENGINE_2_3
        char *opened_path = php_resolve_path(compiler->filename, compiler->filename_len, PG(include_path) TSRMLS_CC);
        if (opened_path) {
            strcpy(compiler->opened_path_buffer, opened_path);
            efree(opened_path);
            compiler->opened_path = compiler->opened_path_buffer;
            if (!statbuf || VCWD_STAT(compiler->opened_path, statbuf) == 0) {
                return SUCCESS;
            }
        }
#else
        char path_buffer[MAXPATHLEN];
        if (xc_resolve_path_stat(compiler->filename, path_buffer, statbuf TSRMLS_CC) == SUCCESS) {
            compiler->opened_path = xc_expand_url(path_buffer, compiler->opened_path_buffer TSRMLS_CC);
            return SUCCESS;
        }
#endif
    }
    return FAILURE;
}
/* }}} */
static int xc_entry_php_init_key(xc_compiler_t *compiler TSRMLS_DC) /* {{{ */
{
    if (XG(stat)) {
        struct stat buf;
        time_t delta;

        if (compiler->opened_path) {
            if (VCWD_STAT(compiler->opened_path, &buf) != 0) {
                return FAILURE;
            }
        }
        else {
            if (xc_entry_php_resolve_opened_path(compiler, &buf TSRMLS_CC) != SUCCESS) {
                return FAILURE;
            }
        }

        delta = XG(request_time) - buf.st_mtime;
        if (abs(delta) < 2 && !xc_test) {
            return FAILURE;
        }

        compiler->new_entry.file_mtime   = buf.st_mtime;
        compiler->new_entry.file_size    = buf.st_size;
        compiler->new_entry.file_device  = buf.st_dev;
        compiler->new_entry.file_inode   = buf.st_ino;
    }
    else {
        xc_entry_php_quick_resolve_opened_path(compiler, NULL TSRMLS_CC);

        compiler->new_entry.file_mtime   = 0;
        compiler->new_entry.file_size    = 0;
        compiler->new_entry.file_device  = 0;
        compiler->new_entry.file_inode   = 0;
    }

    {
        xc_hash_value_t basename_hash_value;
        if (xc_php_hcache.size > 1
         || !compiler->new_entry.file_inode) {
            const char *filename_end = compiler->filename + compiler->filename_len;
            const char *basename_begin = filename_end - 1;

            /* scan till out of basename part */
            while (basename_begin >= compiler->filename && !IS_SLASH(*basename_begin)) {
                --basename_begin;
            }
            /* get back to basename_begin */
            ++basename_begin;

            basename_hash_value = HASH_STR_L(basename_begin, filename_end - basename_begin);
        }

        compiler->entry_hash.cacheid = xc_php_hcache.size > 1 ? xc_hash_fold(basename_hash_value, &xc_php_hcache) : 0;
        compiler->entry_hash.entryslotid = xc_hash_fold(
                compiler->new_entry.file_inode
                ? (xc_hash_value_t) HASH(compiler->new_entry.file_device + compiler->new_entry.file_inode)
                : basename_hash_value
                , &xc_php_hentry);
    }

    compiler->new_entry.filepath  = NULL;
    compiler->new_entry.dirpath   = NULL;
#ifdef IS_UNICODE
    compiler->new_entry.ufilepath = NULL;
    compiler->new_entry.udirpath  = NULL;
#endif

    return SUCCESS;
}
/* }}} */
static inline xc_hash_value_t xc_php_hash_md5(xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
    return HASH_STR_S(php->md5.digest, sizeof(php->md5.digest));
}
/* }}} */
static int xc_entry_data_php_init_md5(xc_cache_t *cache, xc_compiler_t *compiler TSRMLS_DC) /* {{{ */
{
    unsigned char   buf[1024];
    PHP_MD5_CTX     context;
    int             n;
    php_stream     *stream;
    ulong           old_rsid = EG(regular_list).nNextFreeElement;

    stream = php_stream_open_wrapper((char *) compiler->filename, "rb", USE_PATH | REPORT_ERRORS | ENFORCE_SAFE_MODE | STREAM_DISABLE_OPEN_BASEDIR, NULL);
    if (!stream) {
        return FAILURE;
    }

    PHP_MD5Init(&context);
    while ((n = php_stream_read(stream, (char *) buf, sizeof(buf))) > 0) {
        PHP_MD5Update(&context, buf, n);
    }
    PHP_MD5Final((unsigned char *) compiler->new_php.md5.digest, &context);

    php_stream_close(stream);
    if (EG(regular_list).nNextFreeElement == old_rsid + 1) {
        EG(regular_list).nNextFreeElement = old_rsid;
    }

    if (n < 0) {
        return FAILURE;
    }

    compiler->new_php.hvalue = (xc_php_hash_md5(&compiler->new_php TSRMLS_CC) & cache->hphp->mask);
#ifdef XCACHE_DEBUG
    {
        char md5str[33];
        make_digest(md5str, (unsigned char *) compiler->new_php.md5.digest);
        TRACE("md5 %s", md5str);
    }
#endif

    return SUCCESS;
}
/* }}} */
static void xc_entry_php_init(xc_entry_php_t *entry_php, const char *filepath TSRMLS_DC) /* {{{*/
{
    entry_php->filepath     = ZEND_24((char *), NOTHING) filepath;
    entry_php->filepath_len = strlen(entry_php->filepath);
    entry_php->dirpath      = estrndup(entry_php->filepath, entry_php->filepath_len);
    entry_php->dirpath_len  = zend_dirname(entry_php->dirpath, entry_php->filepath_len);
#ifdef IS_UNICODE
    zend_string_to_unicode(ZEND_U_CONVERTER(UG(runtime_encoding_conv)), &entry_php->ufilepath, &entry_php->ufilepath_len, entry_php->filepath, entry_php->filepath_len TSRMLS_CC);
    zend_string_to_unicode(ZEND_U_CONVERTER(UG(runtime_encoding_conv)), &entry_php->udirpath,  &entry_php->udirpath_len,  entry_php->dirpath,  entry_php->dirpath_len TSRMLS_CC);
#endif
}
/* }}} */
#ifndef ZEND_COMPILE_DELAYED_BINDING
static void xc_cache_early_binding_class_cb(zend_op *opline, int oplineno, void *data TSRMLS_DC) /* {{{ */
{
    char *class_name;
    zend_uint i;
    int class_len;
    xc_cest_t cest;
    xc_entry_data_php_t *php = (xc_entry_data_php_t *) data;

    class_name = Z_OP_CONSTANT(opline->op1).value.str.val;
    class_len  = Z_OP_CONSTANT(opline->op1).value.str.len;
    if (zend_hash_find(CG(class_table), class_name, class_len, (void **) &cest) == FAILURE) {
        assert(0);
    }
    TRACE("got ZEND_DECLARE_INHERITED_CLASS: %s", class_name + 1);
    /* let's see which class */
    for (i = 0; i < php->classinfo_cnt; i ++) {
        if (memcmp(ZSTR_S(php->classinfos[i].key), class_name, class_len) == 0) {
            php->classinfos[i].oplineno = oplineno;
            php->have_early_binding = 1;
            break;
        }
    }

    if (i == php->classinfo_cnt) {
        assert(0);
    }
}
/* }}} */
#endif

/* {{{ Constant Usage */
#ifdef ZEND_ENGINE_2_4
#   define xcache_literal_is_dir  1
#   define xcache_literal_is_file 2
#else
#   define xcache_op1_is_file 1
#   define xcache_op1_is_dir  2
#   define xcache_op2_is_file 4
#   define xcache_op2_is_dir  8
#endif
typedef struct {
    zend_bool filepath_used;
    zend_bool dirpath_used;
    zend_bool ufilepath_used;
    zend_bool udirpath_used;
} xc_const_usage_t;
/* }}} */
static void xc_collect_op_array_info(xc_compiler_t *compiler, xc_const_usage_t *usage, xc_op_array_info_t *op_array_info, zend_op_array *op_array TSRMLS_DC) /* {{{ */
{
#ifdef ZEND_ENGINE_2_4
    int literalindex;
#else
    zend_uint oplinenum;
#endif
    xc_vector_t details;

    xc_vector_init(xc_op_array_info_detail_t, &details);

#define XCACHE_ANALYZE_LITERAL(type) \
    if (zend_binary_strcmp(Z_STRVAL(literal->constant), Z_STRLEN(literal->constant), compiler->new_entry.type##path, compiler->new_entry.type##path_len) == 0) { \
        usage->type##path_used = 1; \
        literalinfo |= xcache_##literal##_is_##type; \
    }

#define XCACHE_U_ANALYZE_LITERAL(type) \
    if (zend_u_##binary_strcmp(Z_USTRVAL(literal->constant), Z_USTRLEN(literal->constant), compiler->new_entry.u##type##path, compiler->new_entry.u##type##path_len) == 0) { \
        usage->u##type##path_used = 1; \
        literalinfo |= xcache_##literal##_is_##type; \
    }

#define XCACHE_ANALYZE_OP(type, op) \
    if (zend_binary_strcmp(Z_STRVAL(Z_OP_CONSTANT(opline->op)), Z_STRLEN(Z_OP_CONSTANT(opline->op)), compiler->new_entry.type##path, compiler->new_entry.type##path_len) == 0) { \
        usage->type##path_used = 1; \
        oplineinfo |= xcache_##op##_is_##type; \
    }

#define XCACHE_U_ANALYZE_OP(type, op) \
    if (zend_u_##binary_strcmp(Z_USTRVAL(Z_OP_CONSTANT(opline->op)), Z_USTRLEN(Z_OP_CONSTANT(opline->op)), compiler->new_entry.u##type##path, compiler->new_entry.u##type##path_len) == 0) { \
        usage->u##type##path_used = 1; \
        oplineinfo |= xcache_##op##_is_##type; \
    }

#ifdef ZEND_ENGINE_2_4
    for (literalindex = 0; literalindex < op_array->last_literal; literalindex++) {
        zend_literal *literal = &op_array->literals[literalindex];
        zend_uint literalinfo = 0;
        if (Z_TYPE(literal->constant) == IS_STRING) {
            XCACHE_ANALYZE_LITERAL(file)
            else XCACHE_ANALYZE_LITERAL(dir)
        }
#ifdef IS_UNICODE
        else if (Z_TYPE(literal->constant) == IS_UNICODE) {
            XCACHE_U_ANALYZE_LITERAL(file)
            else XCACHE_U_ANALYZE_LITERAL(dir)
        }
#endif
        if (literalinfo) {
            xc_op_array_info_detail_t detail;
            detail.index = literalindex;
            detail.info  = literalinfo;
            xc_vector_add(xc_op_array_info_detail_t, &details, detail);
        }
    }

    op_array_info->literalinfo_cnt = details.cnt;
    op_array_info->literalinfos    = xc_vector_detach(xc_op_array_info_detail_t, &details);
#else /* ZEND_ENGINE_2_4 */
    for (oplinenum = 0; oplinenum < op_array->last; oplinenum++) {
        zend_op *opline = &op_array->opcodes[oplinenum];
        zend_uint oplineinfo = 0;
        if (Z_OP_TYPE(opline->op1) == IS_CONST) {
            if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_STRING) {
                XCACHE_ANALYZE_OP(file, op1)
                else XCACHE_ANALYZE_OP(dir, op1)
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_UNICODE) {
                XCACHE_U_ANALYZE_OP(file, op1)
                else XCACHE_U_ANALYZE_OP(dir, op1)
            }
#endif
        }

        if (Z_OP_TYPE(opline->op2) == IS_CONST) {
            if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_STRING) {
                XCACHE_ANALYZE_OP(file, op2)
                else XCACHE_ANALYZE_OP(dir, op2)
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_UNICODE) {
                XCACHE_U_ANALYZE_OP(file, op2)
                else XCACHE_U_ANALYZE_OP(dir, op2)
            }
#endif
        }

        if (oplineinfo) {
            xc_op_array_info_detail_t detail;
            detail.index = oplinenum;
            detail.info  = oplineinfo;
            xc_vector_add(xc_op_array_info_detail_t, &details, detail);
        }
    }

    op_array_info->oplineinfo_cnt = details.cnt;
    op_array_info->oplineinfos    = xc_vector_detach(xc_op_array_info_detail_t, &details);
#endif /* ZEND_ENGINE_2_4 */
    xc_vector_free(xc_op_array_info_detail_t, &details);
}
/* }}} */
void xc_fix_op_array_info(const xc_entry_php_t *entry_php, const xc_entry_data_php_t *php, zend_op_array *op_array, int shallow_copy, const xc_op_array_info_t *op_array_info TSRMLS_DC) /* {{{ */
{
#ifdef ZEND_ENGINE_2_4
    zend_uint literalinfoindex;

    for (literalinfoindex = 0; literalinfoindex < op_array_info->literalinfo_cnt; ++literalinfoindex) {
        int literalindex = op_array_info->literalinfos[literalinfoindex].index;
        int literalinfo = op_array_info->literalinfos[literalinfoindex].info;
        zend_literal *literal = &op_array->literals[literalindex];
        if ((literalinfo & xcache_literal_is_file)) {
            if (!shallow_copy) {
                efree(Z_STRVAL(literal->constant));
            }
            if (Z_TYPE(literal->constant) == IS_STRING) {
                assert(entry_php->filepath);
                ZVAL_STRINGL(&literal->constant, entry_php->filepath, entry_php->filepath_len, !shallow_copy);
                TRACE("restored literal constant: %s", entry_php->filepath);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(literal->constant) == IS_UNICODE) {
                assert(entry_php->ufilepath);
                ZVAL_UNICODEL(&literal->constant, entry_php->ufilepath, entry_php->ufilepath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }
        else if ((literalinfo & xcache_literal_is_dir)) {
            if (!shallow_copy) {
                efree(Z_STRVAL(literal->constant));
            }
            if (Z_TYPE(literal->constant) == IS_STRING) {
                assert(entry_php->dirpath);
                TRACE("restored literal constant: %s", entry_php->dirpath);
                ZVAL_STRINGL(&literal->constant, entry_php->dirpath, entry_php->dirpath_len, !shallow_copy);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(literal->constant) == IS_UNICODE) {
                assert(!entry_php->udirpath);
                ZVAL_UNICODEL(&literal->constant, entry_php->udirpath, entry_php->udirpath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }
    }
#else /* ZEND_ENGINE_2_4 */
    zend_uint oplinenum;

    for (oplinenum = 0; oplinenum < op_array_info->oplineinfo_cnt; ++oplinenum) {
        int oplineindex = op_array_info->oplineinfos[oplinenum].index;
        int oplineinfo = op_array_info->oplineinfos[oplinenum].info;
        zend_op *opline = &op_array->opcodes[oplineindex];
        if ((oplineinfo & xcache_op1_is_file)) {
            assert(Z_OP_TYPE(opline->op1) == IS_CONST);
            if (!shallow_copy) {
                efree(Z_STRVAL(Z_OP_CONSTANT(opline->op1)));
            }
            if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_STRING) {
                assert(entry_php->filepath);
                ZVAL_STRINGL(&Z_OP_CONSTANT(opline->op1), entry_php->filepath, entry_php->filepath_len, !shallow_copy);
                TRACE("restored op1 constant: %s", entry_php->filepath);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_UNICODE) {
                assert(entry_php->ufilepath);
                ZVAL_UNICODEL(&Z_OP_CONSTANT(opline->op1), entry_php->ufilepath, entry_php->ufilepath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }
        else if ((oplineinfo & xcache_op1_is_dir)) {
            assert(Z_OP_TYPE(opline->op1) == IS_CONST);
            if (!shallow_copy) {
                efree(Z_STRVAL(Z_OP_CONSTANT(opline->op1)));
            }
            if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_STRING) {
                assert(entry_php->dirpath);
                TRACE("restored op1 constant: %s", entry_php->dirpath);
                ZVAL_STRINGL(&Z_OP_CONSTANT(opline->op1), entry_php->dirpath, entry_php->dirpath_len, !shallow_copy);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op1)) == IS_UNICODE) {
                assert(!entry_php->udirpath);
                ZVAL_UNICODEL(&Z_OP_CONSTANT(opline->op1), entry_php->udirpath, entry_php->udirpath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }

        if ((oplineinfo & xcache_op2_is_file)) {
            assert(Z_OP_TYPE(opline->op2) == IS_CONST);
            if (!shallow_copy) {
                efree(Z_STRVAL(Z_OP_CONSTANT(opline->op2)));
            }
            if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_STRING) {
                assert(entry_php->filepath);
                TRACE("restored op2 constant: %s", entry_php->filepath);
                ZVAL_STRINGL(&Z_OP_CONSTANT(opline->op2), entry_php->filepath, entry_php->filepath_len, !shallow_copy);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_UNICODE) {
                assert(entry_php->ufilepath);
                ZVAL_UNICODEL(&Z_OP_CONSTANT(opline->op2), entry_php->ufilepath, entry_php->ufilepath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }
        else if ((oplineinfo & xcache_op2_is_dir)) {
            assert(Z_OP_TYPE(opline->op2) == IS_CONST);
            if (!shallow_copy) {
                efree(Z_STRVAL(Z_OP_CONSTANT(opline->op2)));
            }
            if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_STRING) {
                assert(entry_php->dirpath);
                TRACE("restored op2 constant: %s", entry_php->dirpath);
                ZVAL_STRINGL(&Z_OP_CONSTANT(opline->op2), entry_php->dirpath, entry_php->dirpath_len, !shallow_copy);
            }
#ifdef IS_UNICODE
            else if (Z_TYPE(Z_OP_CONSTANT(opline->op2)) == IS_UNICODE) {
                assert(entry_php->udirpath);
                ZVAL_UNICODEL(&Z_OP_CONSTANT(opline->op2), entry_php->udirpath, entry_php->udirpath_len, !shallow_copy);
            }
#endif
            else {
                assert(0);
            }
        }
    }
#endif /* ZEND_ENGINE_2_4 */
}
/* }}} */
static void xc_free_op_array_info(xc_op_array_info_t *op_array_info TSRMLS_DC) /* {{{ */
{
#ifdef ZEND_ENGINE_2_4
    if (op_array_info->literalinfos) {
        efree(op_array_info->literalinfos);
    }
#else
    if (op_array_info->oplineinfos) {
        efree(op_array_info->oplineinfos);
    }
#endif
}
/* }}} */
static void xc_free_php(xc_entry_data_php_t *php TSRMLS_DC) /* {{{ */
{
    zend_uint i;
    if (php->classinfos) {
        for (i = 0; i < php->classinfo_cnt; i ++) {
            xc_classinfo_t *classinfo = &php->classinfos[i];
            zend_uint j;

            for (j = 0; j < classinfo->methodinfo_cnt; j ++) {
                xc_free_op_array_info(&classinfo->methodinfos[j] TSRMLS_CC);
            }

            if (classinfo->methodinfos) {
                efree(classinfo->methodinfos);
            }
        }
    }
    if (php->funcinfos) {
        for (i = 0; i < php->funcinfo_cnt; i ++) {
            xc_free_op_array_info(&php->funcinfos[i].op_array_info TSRMLS_CC);
        }
    }
    xc_free_op_array_info(&php->op_array_info TSRMLS_CC);

#define X_FREE(var) do {\
    if (php->var) { \
        efree(php->var); \
    } \
} while (0)

#ifdef ZEND_ENGINE_2_1
    X_FREE(autoglobals);
#endif
    X_FREE(classinfos);
    X_FREE(funcinfos);
#ifdef HAVE_XCACHE_CONSTANT
    X_FREE(constinfos);
#endif
#undef X_FREE
}
/* }}} */
static void xc_compile_php(xc_compiler_t *compiler, zend_file_handle *h, int type TSRMLS_DC) /* {{{ */
{
    zend_uint old_constinfo_cnt, old_funcinfo_cnt, old_classinfo_cnt;
    zend_bool catched = 0;

    /* {{{ compile */
    TRACE("compiling %s", h->opened_path ? h->opened_path : h->filename);

    old_classinfo_cnt = zend_hash_num_elements(CG(class_table));
    old_funcinfo_cnt  = zend_hash_num_elements(CG(function_table));
    old_constinfo_cnt = zend_hash_num_elements(EG(zend_constants));

    zend_try {
        compiler->new_php.op_array = old_compile_file(h, type TSRMLS_CC);
    } zend_catch {
        catched = 1;
    } zend_end_try();

    if (catched) {
        goto err_bailout;
    }

    if (compiler->new_php.op_array == NULL) {
        goto err_op_array;
    }

    if (!XG(initial_compile_file_called)) {
        TRACE("%s", "!initial_compile_file_called, give up");
        return;
    }

    /* }}} */
    /* {{{ prepare */
    zend_restore_compiled_filename(h->opened_path ? h->opened_path : (char *) h->filename TSRMLS_CC);

#ifdef HAVE_XCACHE_CONSTANT
    compiler->new_php.constinfo_cnt  = zend_hash_num_elements(EG(zend_constants)) - old_constinfo_cnt;
#endif
    compiler->new_php.funcinfo_cnt   = zend_hash_num_elements(CG(function_table)) - old_funcinfo_cnt;
    compiler->new_php.classinfo_cnt  = zend_hash_num_elements(CG(class_table))    - old_classinfo_cnt;
#ifdef ZEND_ENGINE_2_1
    /* {{{ count new_php.autoglobal_cnt */ {
        Bucket *b;

        compiler->new_php.autoglobal_cnt = 0;
        for (b = CG(auto_globals)->pListHead; b != NULL; b = b->pListNext) {
            zend_auto_global *auto_global = (zend_auto_global *) b->pData;
            /* check if actived */
            if (auto_global->auto_global_callback && !auto_global->armed) {
                compiler->new_php.autoglobal_cnt ++;
            }
        }
    }
    /* }}} */
#endif

#define X_ALLOC_N(var, cnt) do {     \
    if (compiler->new_php.cnt) {                  \
        ECALLOC_N(compiler->new_php.var, compiler->new_php.cnt); \
        if (!compiler->new_php.var) {             \
            goto err_alloc;          \
        }                            \
    }                                \
    else {                           \
        compiler->new_php.var = NULL;             \
    }                                \
} while (0)

#ifdef HAVE_XCACHE_CONSTANT
    X_ALLOC_N(constinfos,  constinfo_cnt);
#endif
    X_ALLOC_N(funcinfos,   funcinfo_cnt);
    X_ALLOC_N(classinfos,  classinfo_cnt);
#ifdef ZEND_ENGINE_2_1
    X_ALLOC_N(autoglobals, autoglobal_cnt);
#endif
#undef X_ALLOC
    /* }}} */

    /* {{{ shallow copy, pointers only */ {
        Bucket *b;
        zend_uint i;
        zend_uint j;

#define COPY_H(vartype, var, cnt, name, datatype) do {        \
    for (i = 0, j = 0; b; i ++, b = b->pListNext) {           \
        vartype *data = &compiler->new_php.var[j];                         \
                                                              \
        if (i < old_##cnt) {                                  \
            continue;                                         \
        }                                                     \
        j ++;                                                 \
                                                              \
        assert(i < old_##cnt + compiler->new_php.cnt);                     \
        assert(b->pData);                                     \
        memcpy(&data->name, b->pData, sizeof(datatype));      \
        UNISW(NOTHING, data->type = b->key.type;)             \
        if (UNISW(1, b->key.type == IS_STRING)) {             \
            ZSTR_S(data->key)      = BUCKET_KEY_S(b);         \
        }                                                     \
        else {                                                \
            ZSTR_U(data->key)      = BUCKET_KEY_U(b);         \
        }                                                     \
        data->key_size   = b->nKeyLength;                     \
        data->h          = b->h;                              \
    }                                                         \
} while(0)

#ifdef HAVE_XCACHE_CONSTANT
        b = EG(zend_constants)->pListHead; COPY_H(xc_constinfo_t, constinfos, constinfo_cnt, constant, zend_constant);
#endif
        b = CG(function_table)->pListHead; COPY_H(xc_funcinfo_t,  funcinfos,  funcinfo_cnt,  func,     zend_function);
        b = CG(class_table)->pListHead;    COPY_H(xc_classinfo_t, classinfos, classinfo_cnt, cest,     xc_cest_t);

#undef COPY_H

        /* for ZE1, cest need to be fixed inside store */

#ifdef ZEND_ENGINE_2_1
        /* scan for acatived auto globals */
        i = 0;
        for (b = CG(auto_globals)->pListHead; b != NULL; b = b->pListNext) {
            zend_auto_global *auto_global = (zend_auto_global *) b->pData;
            /* check if actived */
            if (auto_global->auto_global_callback && !auto_global->armed) {
                xc_autoglobal_t *data = &compiler->new_php.autoglobals[i];

                assert(i < compiler->new_php.autoglobal_cnt);
                i ++;
                UNISW(NOTHING, data->type = b->key.type;)
                if (UNISW(1, b->key.type == IS_STRING)) {
                    ZSTR_S(data->key)     = BUCKET_KEY_S(b);
                }
                else {
                    ZSTR_U(data->key)     = BUCKET_KEY_U(b);
                }
                data->key_len = b->nKeyLength - 1;
                data->h       = b->h;
            }
        }
#endif
    }
    /* }}} */

    /* {{{ collect info for file/dir path */ {
        Bucket *b;
        xc_const_usage_t const_usage;
        unsigned int i;

        xc_entry_php_init(&compiler->new_entry, zend_get_compiled_filename(TSRMLS_C) TSRMLS_CC);
        memset(&const_usage, 0, sizeof(const_usage));

        for (i = 0; i < compiler->new_php.classinfo_cnt; i ++) {
            xc_classinfo_t *classinfo = &compiler->new_php.classinfos[i];
            zend_class_entry *ce = CestToCePtr(classinfo->cest);
            classinfo->methodinfo_cnt = ce->function_table.nTableSize;
            if (classinfo->methodinfo_cnt) {
                int j;

                ECALLOC_N(classinfo->methodinfos, classinfo->methodinfo_cnt);
                if (!classinfo->methodinfos) {
                    goto err_alloc;
                }

                for (j = 0, b = ce->function_table.pListHead; b; j ++, b = b->pListNext) {
                    xc_collect_op_array_info(compiler, &const_usage, &classinfo->methodinfos[j], (zend_op_array *) b->pData TSRMLS_CC);
                }
            }
            else {
                classinfo->methodinfos = NULL;
            }
        }

        for (i = 0; i < compiler->new_php.funcinfo_cnt; i ++) {
            xc_collect_op_array_info(compiler, &const_usage, &compiler->new_php.funcinfos[i].op_array_info, (zend_op_array *) &compiler->new_php.funcinfos[i].func TSRMLS_CC);
        }

        xc_collect_op_array_info(compiler, &const_usage, &compiler->new_php.op_array_info, compiler->new_php.op_array TSRMLS_CC);

        /* file/dir path free unused */
#define X_FREE_UNUSED(var) \
        if (!const_usage.var##path_used) { \
            efree(compiler->new_entry.var##path); \
            compiler->new_entry.var##path = NULL; \
            compiler->new_entry.var##path_len = 0; \
        }
        /* filepath is required to restore op_array->filename, so no free filepath here */
        X_FREE_UNUSED(dir)
#ifdef IS_UNICODE
        X_FREE_UNUSED(ufile)
        X_FREE_UNUSED(udir)
#endif
#undef X_FREE_UNUSED
    }
    /* }}} */
#ifdef XCACHE_ERROR_CACHING
    compiler->new_php.compilererrors = xc_sandbox_compilererrors(TSRMLS_C);
    compiler->new_php.compilererror_cnt = xc_sandbox_compilererror_cnt(TSRMLS_C);
#endif
#ifndef ZEND_COMPILE_DELAYED_BINDING
    /* {{{ find inherited classes that should be early-binding */
    compiler->new_php.have_early_binding = 0;
    {
        zend_uint i;
        for (i = 0; i < compiler->new_php.classinfo_cnt; i ++) {
            compiler->new_php.classinfos[i].oplineno = -1;
        }
    }

    xc_undo_pass_two(compiler->new_php.op_array TSRMLS_CC);
    xc_foreach_early_binding_class(compiler->new_php.op_array, xc_cache_early_binding_class_cb, (void *) &compiler->new_php TSRMLS_CC);
    xc_redo_pass_two(compiler->new_php.op_array TSRMLS_CC);
    /* }}} */
#endif

    return;

err_alloc:
    xc_free_php(&compiler->new_php TSRMLS_CC);

err_bailout:
err_op_array:

    if (catched) {
        zend_bailout();
    }
}
/* }}} */
static zend_op_array *xc_compile_restore(xc_entry_php_t *stored_entry, xc_entry_data_php_t *stored_php TSRMLS_DC) /* {{{ */
{
    zend_op_array *op_array;
    xc_entry_php_t restored_entry;
    xc_entry_data_php_t restored_php;
    zend_bool catched;
    zend_uint i;

    /* still needed because in zend_language_scanner.l, require()/include() check file_handle.handle.stream.handle */
    i = 1;
    zend_hash_add(&EG(included_files), stored_entry->entry.name.str.val, stored_entry->entry.name.str.len + 1, (void *)&i, sizeof(int), NULL);

    CG(in_compilation)    = 1;
    CG(compiled_filename) = stored_entry->entry.name.str.val;
    CG(zend_lineno)       = 0;
    TRACE("restoring %d:%s", stored_entry->file_inode, stored_entry->entry.name.str.val);
    xc_processor_restore_xc_entry_php_t(&restored_entry, stored_entry TSRMLS_CC);
    xc_processor_restore_xc_entry_data_php_t(stored_entry, &restored_php, stored_php, xc_readonly_protection TSRMLS_CC);
    restored_entry.php = &restored_php;
#ifdef SHOW_DPRINT
    xc_dprint(&restored_entry, 0 TSRMLS_CC);
#endif

    catched = 0;
    zend_try {
        op_array = xc_entry_install(&restored_entry TSRMLS_CC);
    } zend_catch {
        catched = 1;
    } zend_end_try();

#ifdef HAVE_XCACHE_CONSTANT
    if (restored_php.constinfos) {
        efree(restored_php.constinfos);
    }
#endif
    if (restored_php.funcinfos) {
        efree(restored_php.funcinfos);
    }
    if (restored_php.classinfos) {
        efree(restored_php.classinfos);
    }

    if (catched) {
        zend_bailout();
    }
    CG(in_compilation)    = 0;
    CG(compiled_filename) = NULL;
    TRACE("restored %d:%s", stored_entry->file_inode, stored_entry->entry.name.str.val);
    return op_array;
}
/* }}} */
typedef struct xc_sandboxed_compiler_t { /* {{{ */
    xc_compiler_t *compiler;
    /* input */
    zend_file_handle *h;
    int type;

    /* sandbox output */
    xc_entry_php_t *stored_entry;
    xc_entry_data_php_t *stored_php;
} xc_sandboxed_compiler_t;
/* }}} */

static zend_op_array *xc_compile_file_sandboxed(void *data TSRMLS_DC) /* {{{ */
{
    xc_sandboxed_compiler_t *sandboxed_compiler = (xc_sandboxed_compiler_t *) data;
    xc_compiler_t *compiler = sandboxed_compiler->compiler;
    zend_bool catched = 0;
    xc_cache_t *cache = &xc_php_caches[compiler->entry_hash.cacheid];
    xc_entry_php_t *stored_entry;
    xc_entry_data_php_t *stored_php;

    /* {{{ compile */
    /* make compile inside sandbox */
#ifdef HAVE_XCACHE_CONSTANT
    compiler->new_php.constinfos  = NULL;
#endif
    compiler->new_php.funcinfos   = NULL;
    compiler->new_php.classinfos  = NULL;
#ifdef ZEND_ENGINE_2_1
    compiler->new_php.autoglobals = NULL;
#endif
    memset(&compiler->new_php.op_array_info, 0, sizeof(compiler->new_php.op_array_info));

    XG(initial_compile_file_called) = 0;
    zend_try {
        compiler->new_php.op_array = NULL;
        xc_compile_php(compiler, sandboxed_compiler->h, sandboxed_compiler->type TSRMLS_CC);
    } zend_catch {
        catched = 1;
    } zend_end_try();

    if (catched
     || !compiler->new_php.op_array /* possible ? */
     || !XG(initial_compile_file_called)) {
        goto err_aftersandbox;
    }

    /* }}} */
#ifdef SHOW_DPRINT
    compiler->new_entry.php = &compiler->new_php;
    xc_dprint(&compiler->new_entry, 0 TSRMLS_CC);
#endif

    stored_entry = NULL;
    stored_php = NULL;
    ENTER_LOCK_EX(cache) { /* {{{ php_store/entry_store */
        /* php_store */
        stored_php = xc_php_store_unlocked(cache, &compiler->new_php TSRMLS_CC);
        if (!stored_php) {
            /* error */
            break;
        }
        /* entry_store */
        compiler->new_entry.php = stored_php;
        stored_entry = xc_entry_php_store_unlocked(cache, compiler->entry_hash.entryslotid, &compiler->new_entry TSRMLS_CC);
        if (stored_entry) {
            xc_php_addref_unlocked(stored_php);
            TRACE(" cached %d:%s, holding", compiler->new_entry.file_inode, stored_entry->entry.name.str.val);
            xc_entry_hold_php_unlocked(cache, stored_entry TSRMLS_CC);
        }
    } LEAVE_LOCK_EX(cache);
    /* }}} */
    TRACE("%s", stored_entry ? "stored" : "store failed");

    if (catched || !stored_php) {
        goto err_aftersandbox;
    }

    cache->cached->compiling = 0;
    xc_free_php(&compiler->new_php TSRMLS_CC);

    if (stored_entry) {
        sandboxed_compiler->stored_entry = stored_entry;
        sandboxed_compiler->stored_php = stored_php;
        /* discard newly compiled result, restore from stored one */
        if (compiler->new_php.op_array) {
#ifdef ZEND_ENGINE_2
            destroy_op_array(compiler->new_php.op_array TSRMLS_CC);
#else
            destroy_op_array(compiler->new_php.op_array);
#endif
            efree(compiler->new_php.op_array);
            compiler->new_php.op_array = NULL;
        }
        return NULL;
    }
    else {
        return compiler->new_php.op_array;
    }

err_aftersandbox:
    xc_free_php(&compiler->new_php TSRMLS_CC);

    cache->cached->compiling = 0;
    if (catched) {
        cache->cached->errors ++;
        zend_bailout();
    }
    return compiler->new_php.op_array;
} /* }}} */
static zend_op_array *xc_compile_file_cached(xc_compiler_t *compiler, zend_file_handle *h, int type TSRMLS_DC) /* {{{ */
{
    /*
    if (clog) {
        return old;
    }

    if (cached_entry = getby entry_hash) {
        php = cached_entry.php;
        php = restore(php);
        return php;
    }
    else {
        if (!(php = getby md5)) {
            if (clog) {
                return old;
            }

            inside_sandbox {
                php = compile;
                entry = create entries[entry];
            }
        }

        entry.php = php;
        return php;
    }
    */

    xc_entry_php_t *stored_entry;
    xc_entry_data_php_t *stored_php;
    zend_bool gaveup = 0;
    zend_bool catched = 0;
    zend_op_array *op_array;
    xc_cache_t *cache = &xc_php_caches[compiler->entry_hash.cacheid];
    xc_sandboxed_compiler_t sandboxed_compiler;

    /* stale clogs precheck */
    if (XG(request_time) - cache->cached->compiling < 30) {
        cache->cached->clogs ++;
        return old_compile_file(h, type TSRMLS_CC);
    }

    /* {{{ entry_lookup/hit/md5_init/php_lookup */
    stored_entry = NULL;
    stored_php = NULL;

    ENTER_LOCK_EX(cache) {
        if (!compiler->opened_path && xc_entry_resolve_path_unlocked(compiler, compiler->filename, &stored_entry TSRMLS_CC) == SUCCESS) {
            compiler->opened_path = compiler->new_entry.entry.name.str.val;
        }
        else {
            if (!compiler->opened_path && xc_entry_php_resolve_opened_path(compiler, NULL TSRMLS_CC) != SUCCESS) {
                gaveup = 1;
                break;
            }

            /* finalize name */
            compiler->new_entry.entry.name.str.val = (char *) compiler->opened_path;
            compiler->new_entry.entry.name.str.len = strlen(compiler->new_entry.entry.name.str.val);

            stored_entry = (xc_entry_php_t *) xc_entry_find_unlocked(XC_TYPE_PHP, cache, compiler->entry_hash.entryslotid, (xc_entry_t *) &compiler->new_entry TSRMLS_CC);
        }

        if (stored_entry) {
            xc_cached_hit_unlocked(cache->cached TSRMLS_CC);

            TRACE(" hit %d:%s, holding", compiler->new_entry.file_inode, stored_entry->entry.name.str.val);
            xc_entry_hold_php_unlocked(cache, stored_entry TSRMLS_CC);
            stored_php = stored_entry->php;
            break;
        }

        TRACE("miss entry %d:%s", compiler->new_entry.file_inode, compiler->new_entry.entry.name.str.val);

        if (xc_entry_data_php_init_md5(cache, compiler TSRMLS_CC) != SUCCESS) {
            gaveup = 1;
            break;
        }

        stored_php = xc_php_find_unlocked(cache->cached, &compiler->new_php TSRMLS_CC);

        if (stored_php) {
            compiler->new_entry.php = stored_php;
            xc_entry_php_init(&compiler->new_entry, compiler->opened_path TSRMLS_CC);
            stored_entry = xc_entry_php_store_unlocked(cache, compiler->entry_hash.entryslotid, &compiler->new_entry TSRMLS_CC);
            if (stored_entry) {
                xc_php_addref_unlocked(stored_php);
                TRACE(" cached %d:%s, holding", compiler->new_entry.file_inode, stored_entry->entry.name.str.val);
                xc_entry_hold_php_unlocked(cache, stored_entry TSRMLS_CC);
            }
            else {
                gaveup = 1;
            }
            break;
        }

        if (XG(request_time) - cache->cached->compiling < 30) {
            TRACE("%s", "miss php, but compiling");
            cache->cached->clogs ++;
            gaveup = 1;
            break;
        }

        TRACE("%s", "miss php, going to compile");
        cache->cached->compiling = XG(request_time);
    } LEAVE_LOCK_EX(cache);

    if (catched) {
        cache->cached->compiling = 0;
        zend_bailout();
    }

    /* found entry */
    if (stored_entry && stored_php) {
        zend_llist_add_element(&CG(open_files), h);
        return xc_compile_restore(stored_entry, stored_php TSRMLS_CC);
    }

    /* gaveup */
    if (gaveup) {
        return old_compile_file(h, type TSRMLS_CC);
    }
    /* }}} */

    sandboxed_compiler.compiler = compiler;
    sandboxed_compiler.h = h;
    sandboxed_compiler.type = type;
    sandboxed_compiler.stored_php = NULL;
    sandboxed_compiler.stored_entry = NULL;
    op_array = xc_sandbox(xc_compile_file_sandboxed, (void *) &sandboxed_compiler, h->opened_path ? h->opened_path : h->filename TSRMLS_CC);
    if (sandboxed_compiler.stored_entry) {
        return xc_compile_restore(sandboxed_compiler.stored_entry, sandboxed_compiler.stored_php TSRMLS_CC);
    }
    else {
        return op_array;
    }
}
/* }}} */
static zend_op_array *xc_compile_file(zend_file_handle *h, int type TSRMLS_DC) /* {{{ */
{
    xc_compiler_t compiler;
    zend_op_array *op_array;

    assert(xc_initized);

    TRACE("xc_compile_file: type=%d name=%s", h->type, h->filename ? h->filename : "NULL");

    if (!XG(cacher)
     || !h->filename
     || !SG(request_info).path_translated
     || strstr(h->filename, "://") != NULL
#ifdef ZEND_ENGINE_2_3
     /* supported by php_resolve_path */
     || (!XG(stat) && strstr(PG(include_path), "://") != NULL)
#else
     || strstr(PG(include_path), "://") != NULL
#endif
     || xc_cache_disabled()
     ) {
        TRACE("%s", "cacher not enabled");
        return old_compile_file(h, type TSRMLS_CC);
    }

    /* {{{ entry_init_key */
    compiler.opened_path = h->opened_path;
    compiler.filename = compiler.opened_path ? compiler.opened_path : h->filename;
    compiler.filename_len = strlen(compiler.filename);
    if (xc_entry_php_init_key(&compiler TSRMLS_CC) != SUCCESS) {
        TRACE("failed to init key for %s", compiler.filename);
        return old_compile_file(h, type TSRMLS_CC);
    }
    /* }}} */

    op_array = xc_compile_file_cached(&compiler, h, type TSRMLS_CC);

    xc_entry_free_key_php(&compiler.new_entry TSRMLS_CC);

    return op_array;
}
/* }}} */

/* gdb helper functions, but N/A for coredump */
int xc_is_rw(const void *p) /* {{{ */
{
    xc_shm_t *shm;
    size_t i;

    if (xc_php_caches) {
        for (i = 0; i < xc_php_hcache.size; i ++) {
            shm = xc_php_caches[i].shm;
            if (shm->handlers->is_readwrite(shm, p)) {
                return 1;
            }
        }
    }

    if (xc_var_caches) {
        for (i = 0; i < xc_var_hcache.size; i ++) {
            shm = xc_var_caches[i].shm;
            if (shm->handlers->is_readwrite(shm, p)) {
                return 1;
            }
        }
    }
    return 0;
}
/* }}} */
int xc_is_ro(const void *p) /* {{{ */
{
    xc_shm_t *shm;
    size_t i;

    if (xc_php_caches) {
        for (i = 0; i < xc_php_hcache.size; i ++) {
            shm = xc_php_caches[i].shm;
            if (shm->handlers->is_readonly(shm, p)) {
                return 1;
            }
        }
    }

    if (xc_var_caches) {
        for (i = 0; i < xc_var_hcache.size; i ++) {
            shm = xc_var_caches[i].shm;
            if (shm->handlers->is_readonly(shm, p)) {
                return 1;
            }
        }
    }
    return 0;
}
/* }}} */
int xc_is_shm(const void *p) /* {{{ */
{
    return xc_is_ro(p) || xc_is_rw(p);
}
/* }}} */

void xc_gc_add_op_array(xc_gc_op_array_t *gc_op_array TSRMLS_DC) /* {{{ */
{
    zend_llist_add_element(&XG(gc_op_arrays), (void *) gc_op_array);
}
/* }}} */
static void xc_gc_op_array(void *pDest) /* {{{ */
{
    xc_gc_op_array_t *op_array = (xc_gc_op_array_t *) pDest;
    zend_uint i;
#ifdef ZEND_ENGINE_2
    if (op_array->arg_info) {
        for (i = 0; i < op_array->num_args; i++) {
            efree((char *) ZSTR_V(op_array->arg_info[i].name));
            if (ZSTR_V(op_array->arg_info[i].class_name)) {
                efree((char *) ZSTR_V(op_array->arg_info[i].class_name));
            }
        }
        efree(op_array->arg_info);
    }
#endif
    if (op_array->opcodes) {
        efree(op_array->opcodes);
    }
}
/* }}} */

/* module helper function */
static int xc_init_constant(int module_number TSRMLS_DC) /* {{{ */
{
    zend_register_long_constant(ZEND_STRS("XC_TYPE_PHP"), XC_TYPE_PHP, CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
    zend_register_long_constant(ZEND_STRS("XC_TYPE_VAR"), XC_TYPE_VAR, CONST_CS | CONST_PERSISTENT, module_number TSRMLS_CC);
    return 0;
}
/* }}} */
static xc_shm_t *xc_cache_destroy(xc_cache_t *caches, xc_hash_t *hcache) /* {{{ */
{
    size_t i;
    xc_shm_t *shm = NULL;

    assert(caches);

    for (i = 0; i < hcache->size; i ++) {
        xc_cache_t *cache = &caches[i];
        if (cache) {
            if (cache->lck) {
                xc_lock_destroy(cache->lck);
            }
            /* do NOT free
            if (cache->entries) {
                cache->mem->handlers->free(cache->mem, cache->entries);
            }
            cache->mem->handlers->free(cache->mem, cache);
            */
            shm = cache->shm;
            cache->shm->handlers->memdestroy(cache->mem);
        }
    }
    free(caches);
    return shm;
}
/* }}} */
static xc_cache_t *xc_cache_init(xc_shm_t *shm, xc_hash_t *hcache, xc_hash_t *hentry, xc_hash_t *hphp, xc_shmsize_t shmsize) /* {{{ */
{
    xc_cache_t *caches = NULL;
    xc_mem_t *mem;
    time_t now = time(NULL);
    size_t i;
    xc_memsize_t memsize;

    memsize = shmsize / hcache->size;

    /* Don't let it break out of mem after ALIGNed
     * This is important for 
     * Simply loop until it fit our need
     */
    while (ALIGN(memsize) * hcache->size > shmsize && ALIGN(memsize) != memsize) {
        if (memsize < ALIGN(1)) {
            CHECK(NULL, "cache too small");
        }
        memsize --;
    }

    CHECK(caches = calloc(hcache->size, sizeof(xc_cache_t)), "caches OOM");

    for (i = 0; i < hcache->size; i ++) {
        xc_cache_t *cache = &caches[i];
        CHECK(mem                     = shm->handlers->meminit(shm, memsize), "Failed init memory allocator");
        CHECK(cache->cached           = mem->handlers->calloc(mem, 1, sizeof(xc_cached_t)), "cache OOM");
        CHECK(cache->cached->entries  = mem->handlers->calloc(mem, hentry->size, sizeof(xc_entry_t*)), "entries OOM");
        if (hphp) {
            CHECK(cache->cached->phps = mem->handlers->calloc(mem, hphp->size, sizeof(xc_entry_data_php_t*)), "phps OOM");
        }
        CHECK(cache->lck              = xc_lock_init(NULL), "can't create lock");

        cache->hcache  = hcache;
        cache->hentry  = hentry;
        cache->hphp    = hphp;
        cache->shm     = shm;
        cache->mem     = mem;
        cache->cacheid = i;
        cache->cached->last_gc_deletes = now;
        cache->cached->last_gc_expires = now;
    }
    return caches;

err:
    if (caches) {
        xc_cache_destroy(caches, hcache);
    }
    return NULL;
}
/* }}} */
static void xc_destroy() /* {{{ */
{
    xc_shm_t *shm = NULL;
    if (old_compile_file && zend_compile_file == xc_compile_file) {
        zend_compile_file = old_compile_file;
        old_compile_file = NULL;
    }

    if (xc_php_caches) {
        shm = xc_cache_destroy(xc_php_caches, &xc_php_hcache);
        xc_php_caches = NULL;
    }

    if (xc_var_caches) {
        shm = xc_cache_destroy(xc_var_caches, &xc_var_hcache);
        xc_var_caches = NULL;
    }

    if (shm) {
        xc_shm_destroy(shm);
    }

    xc_initized = 0;
}
/* }}} */
static int xc_init() /* {{{ */
{
    xc_shm_t *shm = NULL;
    xc_shmsize_t shmsize = ALIGN(xc_php_size) + ALIGN(xc_var_size);

    xc_php_caches = xc_var_caches = NULL;

    if (shmsize < (size_t) xc_php_size || shmsize < (size_t) xc_var_size) {
        zend_error(E_ERROR, "XCache: neither xcache.size nor xcache.var_size can be negative");
        goto err;
    }

    if (xc_php_size || xc_var_size) {
        CHECK(shm = xc_shm_init(xc_shm_scheme, shmsize, xc_readonly_protection, xc_mmap_path, NULL), "Cannot create shm");
        if (!shm->handlers->can_readonly(shm)) {
            xc_readonly_protection = 0;
        }

        if (xc_php_size) {
            CHECK(xc_php_caches = xc_cache_init(shm, &xc_php_hcache, &xc_php_hentry, &xc_php_hentry, xc_php_size), "failed init opcode cache");
        }

        if (xc_var_size) {
            CHECK(xc_var_caches = xc_cache_init(shm, &xc_var_hcache, &xc_var_hentry, NULL, xc_var_size), "failed init variable cache");
        }
    }
    return SUCCESS;

err:
    if (xc_php_caches || xc_var_caches) {
        xc_destroy();
        /* shm destroied in xc_destroy() */
    }
    else if (shm) {
        xc_destroy();
        xc_shm_destroy(shm);
        shm = NULL;
    }
    return 0;
}
/* }}} */
static void xc_request_init(TSRMLS_D) /* {{{ */
{
    size_t i;

    if (!XG(internal_table_copied)) {
        zend_function tmp_func;
        xc_cest_t tmp_cest;

#ifdef HAVE_XCACHE_CONSTANT
        zend_hash_destroy(&XG(internal_constant_table));
#endif
        zend_hash_destroy(&XG(internal_function_table));
        zend_hash_destroy(&XG(internal_class_table));

#ifdef HAVE_XCACHE_CONSTANT
        zend_hash_init_ex(&XG(internal_constant_table), 20,  NULL, (dtor_func_t) xc_zend_constant_dtor, 1, 0);
#endif
        zend_hash_init_ex(&XG(internal_function_table), 100, NULL, NULL, 1, 0);
        zend_hash_init_ex(&XG(internal_class_table),    10,  NULL, NULL, 1, 0);

#ifdef HAVE_XCACHE_CONSTANT
        xc_copy_internal_zend_constants(&XG(internal_constant_table), EG(zend_constants));
#endif
        zend_hash_copy(&XG(internal_function_table), CG(function_table), NULL, &tmp_func, sizeof(tmp_func));
        zend_hash_copy(&XG(internal_class_table), CG(class_table), NULL, &tmp_cest, sizeof(tmp_cest));

        XG(internal_table_copied) = 1;
    }
    if (xc_php_caches && !XG(php_holds)) {
        XG(php_holds_size) = xc_php_hcache.size;
        XG(php_holds) = calloc(XG(php_holds_size), sizeof(xc_stack_t));
        for (i = 0; i < xc_php_hcache.size; i ++) {
            xc_stack_init(&XG(php_holds[i]));
        }
    }

    if (xc_var_caches && !XG(var_holds)) {
        XG(var_holds_size) = xc_var_hcache.size;
        XG(var_holds) = calloc(XG(var_holds_size), sizeof(xc_stack_t));
        for (i = 0; i < xc_var_hcache.size; i ++) {
            xc_stack_init(&XG(var_holds[i]));
        }
    }

#ifdef ZEND_ENGINE_2
    zend_llist_init(&XG(gc_op_arrays), sizeof(xc_gc_op_array_t), xc_gc_op_array, 0);
#endif

#if PHP_API_VERSION <= 20041225
    XG(request_time) = time(NULL);
#else
    XG(request_time) = sapi_get_request_time(TSRMLS_C);
#endif
}
/* }}} */
static void xc_request_shutdown(TSRMLS_D) /* {{{ */
{
    if (!xc_cache_disabled()) {
        xc_entry_unholds(TSRMLS_C);
        xc_gc_expires_php(TSRMLS_C);
        xc_gc_expires_var(TSRMLS_C);
        xc_gc_deletes(TSRMLS_C);
    }
#ifdef ZEND_ENGINE_2
    zend_llist_destroy(&XG(gc_op_arrays));
#endif
}
/* }}} */

/* user functions */
static int xcache_admin_auth_check(TSRMLS_D) /* {{{ */
{
    zval **server = NULL;
    zval **user = NULL;
    zval **pass = NULL;
    char *admin_user = NULL;
    char *admin_pass = NULL;
    HashTable *ht;

    /* auth disabled, nothing to do.. */
    if (!xc_admin_enable_auth) {
        return 1;
    }

    if (cfg_get_string("xcache.admin.user", &admin_user) == FAILURE || !admin_user[0]) {
        admin_user = NULL;
    }
    if (cfg_get_string("xcache.admin.pass", &admin_pass) == FAILURE || !admin_pass[0]) {
        admin_pass = NULL;
    }

    if (admin_user == NULL || admin_pass == NULL) {
        php_error_docref(XCACHE_WIKI_URL "/InstallAdministration" TSRMLS_CC, E_ERROR,
                "xcache.admin.user and/or xcache.admin.pass settings is not configured."
                " Make sure you've modified the correct php ini file for your php used in webserver.");
        zend_bailout();
    }
    if (strlen(admin_pass) != 32) {
        php_error_docref(NULL TSRMLS_CC, E_ERROR, "xcache.admin.pass is %lu chars unexpectedly, it is supposed to be the password after md5() which should be 32 chars", (unsigned long) strlen(admin_pass));
        zend_bailout();
    }

#ifdef ZEND_ENGINE_2_1
    zend_is_auto_global("_SERVER", sizeof("_SERVER") - 1 TSRMLS_CC);
#endif
    if (zend_hash_find(&EG(symbol_table), "_SERVER", sizeof("_SERVER"), (void **) &server) != SUCCESS || Z_TYPE_PP(server) != IS_ARRAY) {
        php_error_docref(NULL TSRMLS_CC, E_ERROR, "_SERVER is corrupted");
        zend_bailout();
    }
    ht = HASH_OF((*server));

    if (zend_hash_find(ht, "PHP_AUTH_USER", sizeof("PHP_AUTH_USER"), (void **) &user) == FAILURE) {
        user = NULL;
    }
    else if (Z_TYPE_PP(user) != IS_STRING) {
        user = NULL;
    }

    if (zend_hash_find(ht, "PHP_AUTH_PW", sizeof("PHP_AUTH_PW"), (void **) &pass) == FAILURE) {
        pass = NULL;
    }
    else if (Z_TYPE_PP(pass) != IS_STRING) {
        pass = NULL;
    }

    if (user != NULL && pass != NULL && strcmp(admin_user, Z_STRVAL_PP(user)) == 0) {
        PHP_MD5_CTX context;
        char md5str[33];
        unsigned char digest[16];

        PHP_MD5Init(&context);
        PHP_MD5Update(&context, (unsigned char *) Z_STRVAL_PP(pass), Z_STRLEN_PP(pass));
        PHP_MD5Final(digest, &context);

        md5str[0] = '\0';
        make_digest(md5str, digest);
        if (strcmp(admin_pass, md5str) == 0) {
            return 1;
        }
    }

#define STR "HTTP/1.0 401 Unauthorized"
    sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
#define STR "WWW-authenticate: Basic Realm=\"XCache Administration\""
    sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
#define STR "Content-type: text/html; charset=UTF-8"
    sapi_add_header_ex(STR, sizeof(STR) - 1, 1, 1 TSRMLS_CC);
#undef STR
    ZEND_PUTS("<html>\n");
    ZEND_PUTS("<head><title>XCache Authentication Failed</title></head>\n");
    ZEND_PUTS("<body>\n");
    ZEND_PUTS("<h1>XCache Authentication Failed</h1>\n");
    ZEND_PUTS("<p>You're not authorized to access this page due to wrong username and/or password you typed.<br />The following check points is suggested:</p>\n");
    ZEND_PUTS("<ul>\n");
    ZEND_PUTS("<li>Be aware that `Username' and `Password' is case sense. Check capslock status led on your keyboard, and punch left/right Shift keys once for each</li>\n");
    ZEND_PUTS("<li>Make sure the md5 password is generated correctly. You may use <a href=\"mkpassword.php\">mkpassword.php</a></li>\n");
    ZEND_PUTS("<li>Reload browser cache by pressing F5 and/or Ctrl+F5, or simply clear browser cache after you've updated username/password in php ini.</li>\n");
    ZEND_PUTS("</ul>\n");
    ZEND_PUTS("Check <a href=\"" XCACHE_WIKI_URL "/InstallAdministration\">XCache wiki page</a> for more information.\n");
    ZEND_PUTS("</body>\n");
    ZEND_PUTS("</html>\n");

    zend_bailout();
    return 0;
}
/* }}} */
static void xc_clear(long type, xc_cache_t *cache TSRMLS_DC) /* {{{ */
{
    xc_entry_t *e, *next;
    int entryslotid, c;

    ENTER_LOCK(cache) {
        for (entryslotid = 0, c = cache->hentry->size; entryslotid < c; entryslotid ++) {
            for (e = cache->cached->entries[entryslotid]; e; e = next) {
                next = e->next;
                xc_entry_remove_unlocked(type, cache, entryslotid, e TSRMLS_CC);
            }
            cache->cached->entries[entryslotid] = NULL;
        }
    } LEAVE_LOCK(cache);
} /* }}} */
/* {{{ xcache_admin_operate */
typedef enum { XC_OP_COUNT, XC_OP_INFO, XC_OP_LIST, XC_OP_CLEAR } xcache_op_type;
static void xcache_admin_operate(xcache_op_type optype, INTERNAL_FUNCTION_PARAMETERS)
{
    long type;
    int size;
    xc_cache_t *caches, *cache;
    long id = 0;

    xcache_admin_auth_check(TSRMLS_C);

    if (!xc_initized || xc_cache_disabled()) {
        RETURN_NULL();
    }

    switch (optype) {
        case XC_OP_COUNT:
            if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &type) == FAILURE) {
                return;
            }
            break;
        case XC_OP_CLEAR:
            id = -1;
            if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|l", &type, &id) == FAILURE) {
                return;
            }
            break;
        default:
            if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ll", &type, &id) == FAILURE) {
                return;
            }
    }

    switch (type) {
        case XC_TYPE_PHP:
            size = xc_php_hcache.size;
            caches = xc_php_caches;
            break;

        case XC_TYPE_VAR:
            size = xc_var_hcache.size;
            caches = xc_var_caches;
            break;

        default:
            php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown type %ld", type);
            RETURN_FALSE;
    }

    switch (optype) {
        case XC_OP_COUNT:
            RETURN_LONG(caches ? size : 0)
            break;

        case XC_OP_INFO:
        case XC_OP_LIST:
            if (!caches || id < 0 || id >= size) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cache not exists");
                RETURN_FALSE;
            }

            array_init(return_value);

            cache = &caches[id];
            ENTER_LOCK(cache) {
                if (optype == XC_OP_INFO) {
                    xc_fillinfo_unlocked(type, cache, return_value TSRMLS_CC);
                }
                else {
                    xc_filllist_unlocked(type, cache, return_value TSRMLS_CC);
                }
            } LEAVE_LOCK(cache);
            break;

        case XC_OP_CLEAR:
            if (!caches || id < -1 || id >= size) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cache not exists");
                RETURN_FALSE;
            }

            if (id == -1) {
                for (id = 0; id < size; ++id) {
                    xc_clear(type, &caches[id] TSRMLS_CC);
                }
            }
            else {
                xc_clear(type, &caches[id] TSRMLS_CC);
            }

            xc_gc_deletes(TSRMLS_C);
            break;

        default:
            assert(0);
    }
}
/* }}} */
/* {{{ proto int xcache_count(int type)
   Return count of cache on specified cache type */
PHP_FUNCTION(xcache_count)
{
    xcache_admin_operate(XC_OP_COUNT, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_info(int type, int id)
   Get cache info by id on specified cache type */
PHP_FUNCTION(xcache_info)
{
    xcache_admin_operate(XC_OP_INFO, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_list(int type, int id)
   Get cache entries list by id on specified cache type */
PHP_FUNCTION(xcache_list)
{
    xcache_admin_operate(XC_OP_LIST, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto array xcache_clear_cache(int type, [ int id = -1 ])
   Clear cache by id on specified cache type */
PHP_FUNCTION(xcache_clear_cache)
{
    xcache_admin_operate(XC_OP_CLEAR, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */

#define VAR_DISABLED_WARNING() do { \
        php_error_docref(NULL TSRMLS_CC, E_WARNING, "XCache var cache was not initialized properly. Check php log for actual reason"); \
} while (0)

static int xc_entry_var_init_key(xc_entry_var_t *entry_var, xc_entry_hash_t *entry_hash, zval *name TSRMLS_DC) /* {{{ */
{
    xc_hash_value_t hv;

    switch (name->type) {
#ifdef IS_UNICODE
        case IS_UNICODE:
        case IS_STRING:
#endif
        default:
#ifdef IS_UNICODE
            convert_to_unicode(name);
#else
            convert_to_string(name);
#endif
    }

#ifdef IS_UNICODE
    entry_var->name_type = name->type;
#endif
    entry_var->entry.name = name->value;

    hv = xc_entry_hash_var((xc_entry_t *) entry_var TSRMLS_CC);

    entry_hash->cacheid = (hv & xc_var_hcache.mask);
    hv >>= xc_var_hcache.bits;
    entry_hash->entryslotid = (hv & xc_var_hentry.mask);
    return SUCCESS;
}
/* }}} */
/* {{{ proto mixed xcache_get(string name)
   Get cached data by specified name */
PHP_FUNCTION(xcache_get)
{
    xc_entry_hash_t entry_hash;
    xc_cache_t *cache;
    xc_entry_var_t entry_var, *stored_entry_var;
    zval *name;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_NULL();
    }

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
        return;
    }
    xc_entry_var_init_key(&entry_var, &entry_hash, name TSRMLS_CC);
    cache = &xc_var_caches[entry_hash.cacheid];

    ENTER_LOCK(cache) {
        stored_entry_var = (xc_entry_var_t *) xc_entry_find_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) &entry_var TSRMLS_CC);
        if (stored_entry_var) {
            /* return */
            xc_processor_restore_zval(return_value, stored_entry_var->value, stored_entry_var->have_references TSRMLS_CC);
            xc_cached_hit_unlocked(cache->cached TSRMLS_CC);
        }
        else {
            RETVAL_NULL();
        }
    } LEAVE_LOCK(cache);
}
/* }}} */
/* {{{ proto bool  xcache_set(string name, mixed value [, int ttl])
   Store data to cache by specified name */
PHP_FUNCTION(xcache_set)
{
    xc_entry_hash_t entry_hash;
    xc_cache_t *cache;
    xc_entry_var_t entry_var, *stored_entry_var;
    zval *name;
    zval *value;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_NULL();
    }

    entry_var.entry.ttl = XG(var_ttl);
    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zz|l", &name, &value, &entry_var.entry.ttl) == FAILURE) {
        return;
    }

    if (Z_TYPE_P(value) == IS_OBJECT) {
        php_error_docref(NULL TSRMLS_CC, E_ERROR, "Objects cannot be stored in the variable cache. Use serialize before xcache_set");
        RETURN_NULL();
    }

    /* max ttl */
    if (xc_var_maxttl && (!entry_var.entry.ttl || entry_var.entry.ttl > xc_var_maxttl)) {
        entry_var.entry.ttl = xc_var_maxttl;
    }

    xc_entry_var_init_key(&entry_var, &entry_hash, name TSRMLS_CC);
    cache = &xc_var_caches[entry_hash.cacheid];

    ENTER_LOCK(cache) {
        stored_entry_var = (xc_entry_var_t *) xc_entry_find_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) &entry_var TSRMLS_CC);
        if (stored_entry_var) {
            xc_entry_remove_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) stored_entry_var TSRMLS_CC);
        }
        entry_var.value = value;
        RETVAL_BOOL(xc_entry_var_store_unlocked(cache, entry_hash.entryslotid, &entry_var TSRMLS_CC) != NULL ? 1 : 0);
    } LEAVE_LOCK(cache);
}
/* }}} */
/* {{{ proto bool  xcache_isset(string name)
   Check if an entry exists in cache by specified name */
PHP_FUNCTION(xcache_isset)
{
    xc_entry_hash_t entry_hash;
    xc_cache_t *cache;
    xc_entry_var_t entry_var, *stored_entry_var;
    zval *name;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_FALSE;
    }

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
        return;
    }
    xc_entry_var_init_key(&entry_var, &entry_hash, name TSRMLS_CC);
    cache = &xc_var_caches[entry_hash.cacheid];

    ENTER_LOCK(cache) {
        stored_entry_var = (xc_entry_var_t *) xc_entry_find_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) &entry_var TSRMLS_CC);
        if (stored_entry_var) {
            xc_cached_hit_unlocked(cache->cached TSRMLS_CC);
            RETVAL_TRUE;
            /* return */
        }
        else {
            RETVAL_FALSE;
        }

    } LEAVE_LOCK(cache);
}
/* }}} */
/* {{{ proto bool  xcache_unset(string name)
   Unset existing data in cache by specified name */
PHP_FUNCTION(xcache_unset)
{
    xc_entry_hash_t entry_hash;
    xc_cache_t *cache;
    xc_entry_var_t entry_var, *stored_entry_var;
    zval *name;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_FALSE;
    }

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &name) == FAILURE) {
        return;
    }
    xc_entry_var_init_key(&entry_var, &entry_hash, name TSRMLS_CC);
    cache = &xc_var_caches[entry_hash.cacheid];

    ENTER_LOCK(cache) {
        stored_entry_var = (xc_entry_var_t *) xc_entry_find_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) &entry_var TSRMLS_CC);
        if (stored_entry_var) {
            xc_entry_remove_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) stored_entry_var TSRMLS_CC);
            RETVAL_TRUE;
        }
        else {
            RETVAL_FALSE;
        }
    } LEAVE_LOCK(cache);
}
/* }}} */
/* {{{ proto bool  xcache_unset_by_prefix(string prefix)
   Unset existing data in cache by specified prefix */
PHP_FUNCTION(xcache_unset_by_prefix)
{
    zval *prefix;
    int i, iend;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_FALSE;
    }

    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z", &prefix) == FAILURE) {
        return;
    }

    for (i = 0, iend = xc_var_hcache.size; i < iend; i ++) {
        xc_cache_t *cache = &xc_var_caches[i];
        ENTER_LOCK(cache) {
            int entryslotid, jend;
            for (entryslotid = 0, jend = cache->hentry->size; entryslotid < jend; entryslotid ++) {
                xc_entry_t *entry, *next;
                for (entry = cache->cached->entries[entryslotid]; entry; entry = next) {
                    next = entry->next;
                    if (xc_entry_has_prefix_unlocked(XC_TYPE_VAR, entry, prefix)) {
                        xc_entry_remove_unlocked(XC_TYPE_VAR, cache, entryslotid, entry TSRMLS_CC);
                    }
                }
            }
        } LEAVE_LOCK(cache);
    }
}
/* }}} */
static inline void xc_var_inc_dec(int inc, INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
{
    xc_entry_hash_t entry_hash;
    xc_cache_t *cache;
    xc_entry_var_t entry_var, *stored_entry_var;
    zval *name;
    long count = 1;
    long value = 0;
    zval oldzval;

    if (!xc_var_caches || xc_cache_disabled()) {
        VAR_DISABLED_WARNING();
        RETURN_NULL();
    }

    entry_var.entry.ttl = XG(var_ttl);
    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z|ll", &name, &count, &entry_var.entry.ttl) == FAILURE) {
        return;
    }

    /* max ttl */
    if (xc_var_maxttl && (!entry_var.entry.ttl || entry_var.entry.ttl > xc_var_maxttl)) {
        entry_var.entry.ttl = xc_var_maxttl;
    }

    xc_entry_var_init_key(&entry_var, &entry_hash, name TSRMLS_CC);
    cache = &xc_var_caches[entry_hash.cacheid];

    ENTER_LOCK(cache) {
        stored_entry_var = (xc_entry_var_t *) xc_entry_find_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) &entry_var TSRMLS_CC);
        if (stored_entry_var) {
            TRACE("incdec: got entry_var %s", entry_var.entry.name.str.val);
            /* do it in place */
            if (Z_TYPE_P(stored_entry_var->value) == IS_LONG) {
                zval *zv;
                stored_entry_var->entry.ctime = XG(request_time);
                stored_entry_var->entry.ttl   = entry_var.entry.ttl;
                TRACE("%s", "incdec: islong");
                value = Z_LVAL_P(stored_entry_var->value);
                value += (inc == 1 ? count : - count);
                RETVAL_LONG(value);

                zv = (zval *) cache->shm->handlers->to_readwrite(cache->shm, (char *) stored_entry_var->value);
                Z_LVAL_P(zv) = value;
                ++cache->cached->updates;
                break; /* leave lock */
            }

            TRACE("%s", "incdec: notlong");
            xc_processor_restore_zval(&oldzval, stored_entry_var->value, stored_entry_var->have_references TSRMLS_CC);
            convert_to_long(&oldzval);
            value = Z_LVAL(oldzval);
            zval_dtor(&oldzval);
        }
        else {
            TRACE("incdec: %s not found", entry_var.entry.name.str.val);
        }

        value += (inc == 1 ? count : - count);
        RETVAL_LONG(value);
        entry_var.value = return_value;

        if (stored_entry_var) {
            entry_var.entry.atime = stored_entry_var->entry.atime;
            entry_var.entry.ctime = stored_entry_var->entry.ctime;
            entry_var.entry.hits  = stored_entry_var->entry.hits;
            xc_entry_remove_unlocked(XC_TYPE_VAR, cache, entry_hash.entryslotid, (xc_entry_t *) stored_entry_var TSRMLS_CC);
        }
        xc_entry_var_store_unlocked(cache, entry_hash.entryslotid, &entry_var TSRMLS_CC);
    } LEAVE_LOCK(cache);
}
/* }}} */
/* {{{ proto int xcache_inc(string name [, int value [, int ttl]])
   Increase an int counter in cache by specified name, create it if not exists */
PHP_FUNCTION(xcache_inc)
{
    xc_var_inc_dec(1, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto int xcache_dec(string name [, int value [, int ttl]])
   Decrease an int counter in cache by specified name, create it if not exists */
PHP_FUNCTION(xcache_dec)
{
    xc_var_inc_dec(-1, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
static zend_function_entry xcache_cacher_functions[] = /* {{{ */
{
    PHP_FE(xcache_count,             NULL)
    PHP_FE(xcache_info,              NULL)
    PHP_FE(xcache_list,              NULL)
    PHP_FE(xcache_clear_cache,       NULL)
    PHP_FE(xcache_get,               NULL)
    PHP_FE(xcache_set,               NULL)
    PHP_FE(xcache_isset,             NULL)
    PHP_FE(xcache_unset,             NULL)
    PHP_FE(xcache_unset_by_prefix,   NULL)
    PHP_FE(xcache_inc,               NULL)
    PHP_FE(xcache_dec,               NULL)
    PHP_FE_END
};
/* }}} */

static int xc_cacher_zend_startup(zend_extension *extension) /* {{{ */
{
    if ((xc_php_size || xc_var_size) && xc_mmap_path && xc_mmap_path[0]) {
        if (xc_init() != SUCCESS) {
            zend_error(E_ERROR, "XCache: Cannot init");
            return FAILURE;
        }
        xc_initized = 1;
        xc_init_time = time(NULL);
#ifdef PHP_WIN32
        xc_init_instance_id = GetCurrentProcessId();
#else
        xc_init_instance_id = getpid();
#endif
#ifdef ZTS
        xc_init_instance_subid = tsrm_thread_id();
#endif
    }

    if (xc_php_size) {
        old_compile_file = zend_compile_file;
        zend_compile_file = xc_compile_file;
    }

    return SUCCESS;
}
/* }}} */
static void xc_cacher_zend_shutdown(zend_extension *extension) /* {{{ */
{
    if (xc_initized) {
        xc_destroy();
    }
}
/* }}} */
/* {{{ zend extension definition structure */
static zend_extension xc_cacher_zend_extension_entry = {
    XCACHE_NAME " Cacher",
    XCACHE_VERSION,
    XCACHE_AUTHOR,
    XCACHE_URL,
    XCACHE_COPYRIGHT,
    xc_cacher_zend_startup,
    xc_cacher_zend_shutdown,
    NULL,           /* activate_func_t */
    NULL,           /* deactivate_func_t */
    NULL,           /* message_handler_func_t */
    NULL,           /* op_array_handler_func_t */
    NULL,           /* statement_handler_func_t */
    NULL,           /* fcall_begin_handler_func_t */
    NULL,           /* fcall_end_handler_func_t */
    NULL,           /* op_array_ctor_func_t */
    NULL,           /* op_array_dtor_func_t */
    STANDARD_ZEND_EXTENSION_PROPERTIES
};
/* }}} */

/* {{{ ini */
#ifdef ZEND_WIN32
#   define DEFAULT_PATH "xcache"
#else
#   define DEFAULT_PATH "/dev/zero"
#endif
PHP_INI_BEGIN()
    PHP_INI_ENTRY1     ("xcache.mmap_path",     DEFAULT_PATH, PHP_INI_SYSTEM, xcache_OnUpdateString,   &xc_mmap_path)
    PHP_INI_ENTRY1     ("xcache.readonly_protection",    "0", PHP_INI_SYSTEM, xcache_OnUpdateBool,     &xc_readonly_protection)
    /* opcode cache */
    PHP_INI_ENTRY1     ("xcache.admin.enable_auth",      "1", PHP_INI_SYSTEM, xcache_OnUpdateBool,     &xc_admin_enable_auth)
    PHP_INI_ENTRY1     ("xcache.size",                   "0", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.count",                  "1", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.slots",                 "8K", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.shm_scheme",          "mmap", PHP_INI_SYSTEM, xcache_OnUpdateString,   &xc_shm_scheme)
    PHP_INI_ENTRY1     ("xcache.ttl",                    "0", PHP_INI_SYSTEM, xcache_OnUpdateULong,    &xc_php_ttl)
    PHP_INI_ENTRY1     ("xcache.gc_interval",            "0", PHP_INI_SYSTEM, xcache_OnUpdateULong,    &xc_php_gc_interval)
    STD_PHP_INI_BOOLEAN("xcache.cacher",                 "1", PHP_INI_ALL,    OnUpdateBool,    cacher, zend_xcache_globals, xcache_globals)
    STD_PHP_INI_BOOLEAN("xcache.stat",                   "1", PHP_INI_ALL,    OnUpdateBool,    stat,   zend_xcache_globals, xcache_globals)
    /* var cache */
    PHP_INI_ENTRY1     ("xcache.var_size",               "0", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.var_count",              "1", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.var_slots",             "8K", PHP_INI_SYSTEM, xcache_OnUpdateDummy,    NULL)
    PHP_INI_ENTRY1     ("xcache.var_maxttl",             "0", PHP_INI_SYSTEM, xcache_OnUpdateULong,    &xc_var_maxttl)
    PHP_INI_ENTRY1     ("xcache.var_gc_interval",      "120", PHP_INI_SYSTEM, xcache_OnUpdateULong,    &xc_var_gc_interval)
    STD_PHP_INI_ENTRY  ("xcache.var_ttl",                "0", PHP_INI_ALL,    OnUpdateLong, var_ttl,   zend_xcache_globals, xcache_globals)
PHP_INI_END()
/* }}} */
static PHP_MINFO_FUNCTION(xcache_cacher) /* {{{ */
{
    char buf[100];
    char *ptr;
    int left, len;
    xc_shm_scheme_t *scheme;

    php_info_print_table_start();
    php_info_print_table_row(2, "XCache Cacher Module", "enabled");
    php_info_print_table_row(2, "Readonly Protection", xc_readonly_protection ? "enabled" : "disabled");
#ifdef ZEND_ENGINE_2_1
    ptr = php_format_date("Y-m-d H:i:s", sizeof("Y-m-d H:i:s") - 1, xc_init_time, 1 TSRMLS_CC);
    php_info_print_table_row(2, "Cache Init Time", ptr);
    efree(ptr);
#else
    snprintf(buf, sizeof(buf), "%lu", (long unsigned) xc_init_time);
    php_info_print_table_row(2, "Cache Init Time", buf);
#endif

#ifdef ZTS
    snprintf(buf, sizeof(buf), "%lu.%lu", xc_init_instance_id, xc_init_instance_subid);
#else
    snprintf(buf, sizeof(buf), "%lu", xc_init_instance_id);
#endif
    php_info_print_table_row(2, "Cache Instance Id", buf);

    if (xc_php_size) {
        ptr = _php_math_number_format(xc_php_size, 0, '.', ',');
        snprintf(buf, sizeof(buf), "enabled, %s bytes, %lu split(s), with %lu slots each", ptr, xc_php_hcache.size, xc_php_hentry.size);
        php_info_print_table_row(2, "Opcode Cache", buf);
        efree(ptr);
    }
    else {
        php_info_print_table_row(2, "Opcode Cache", "disabled");
    }
    if (xc_var_size) {
        ptr = _php_math_number_format(xc_var_size, 0, '.', ',');
        snprintf(buf, sizeof(buf), "enabled, %s bytes, %lu split(s), with %lu slots each", ptr, xc_var_hcache.size, xc_var_hentry.size);
        php_info_print_table_row(2, "Variable Cache", buf);
        efree(ptr);
    }
    else {
        php_info_print_table_row(2, "Variable Cache", "disabled");
    }

    left = sizeof(buf);
    ptr = buf;
    buf[0] = '\0';
    for (scheme = xc_shm_scheme_first(); scheme; scheme = xc_shm_scheme_next(scheme)) {
        len = snprintf(ptr, left, ptr == buf ? "%s" : ", %s", xc_shm_scheme_name(scheme));
        left -= len;
        ptr += len;
    }
    php_info_print_table_row(2, "Shared Memory Schemes", buf);

    php_info_print_table_end();

    DISPLAY_INI_ENTRIES();
}
/* }}} */
static int xc_config_hash(xc_hash_t *p, char *name, char *default_value) /* {{{ */
{
    size_t bits, size;
    char *value;

    if (cfg_get_string(name, &value) != SUCCESS) {
        value = default_value;
    }

    p->size = zend_atoi(value, strlen(value));
    for (size = 1, bits = 1; size < p->size; bits ++, size <<= 1) {
        /* empty body */
    }
    p->size = size;
    p->bits = bits;
    p->mask = size - 1;

    return SUCCESS;
}
/* }}} */
static int xc_config_long(zend_ulong *p, char *name, char *default_value) /* {{{ */
{
    char *value;

    if (cfg_get_string(name, &value) != SUCCESS) {
        value = default_value;
    }

    *p = zend_atol(value, strlen(value));
    return SUCCESS;
}
/* }}} */
static PHP_MINIT_FUNCTION(xcache_cacher) /* {{{ */
{
    char *env;
    zend_extension *ext;
    zend_llist_position lpos;

    ext = zend_get_extension("Zend Optimizer");
    if (ext) {
        /* zend_optimizer.optimization_level>0 is not compatible with other cacher, disabling */
#if 0
        ext->op_array_handler = NULL;
#endif
    }
    /* cache if there's an op_array_ctor */
    for (ext = zend_llist_get_first_ex(&zend_extensions, &lpos);
            ext;
            ext = zend_llist_get_next_ex(&zend_extensions, &lpos)) {
        if (ext->op_array_ctor) {
            xc_have_op_array_ctor = 1;
            break;
        }
    }

    /* additional_functions requires PHP 5.3. TODO: find simpler way to do it */
#ifdef ZEND_ENGINE_2_3
    if (strcmp(sapi_module.name, "cgi-fcgi") == 0 && !sapi_module.additional_functions && !getenv("XCACHE_SKIP_FCGI_WARNING") && !getenv("GATEWAY_INTERFACE")) {
        if ((getenv("PHP_FCGI_CHILDREN") == NULL) || (atoi(getenv("PHP_FCGI_CHILDREN")) < 1)) {
            zend_error(E_WARNING, "PHP_FCGI_CHILDREN should be >= 1 and use 1 group of parent/childs model. Set XCACHE_SKIP_FCGI_WARNING=1 to skip this warning. See " XCACHE_WIKI_URL "/Faq");
        }
    }
#endif

    xc_config_long(&xc_php_size,       "xcache.size",        "0");
    xc_config_hash(&xc_php_hcache,     "xcache.count",       "1");
    xc_config_hash(&xc_php_hentry,     "xcache.slots",      "8K");

    xc_config_long(&xc_var_size,       "xcache.var_size",    "0");
    xc_config_hash(&xc_var_hcache,     "xcache.var_count",   "1");
    xc_config_hash(&xc_var_hentry,     "xcache.var_slots",  "8K");

    if (strcmp(sapi_module.name, "cli") == 0) {
        if ((env = getenv("XCACHE_TEST")) != NULL) {
            xc_test = atoi(env);
        }
        if (!xc_test) {
            /* disable cache for cli except for testing */
            xc_php_size = xc_var_size = 0;
        }
    }

    if (xc_php_size <= 0) {
        xc_php_size = xc_php_hcache.size = 0;
    }
    if (xc_var_size <= 0) {
        xc_var_size = xc_var_hcache.size = 0;
    }

    xc_init_constant(module_number TSRMLS_CC);

    REGISTER_INI_ENTRIES();

    xc_sandbox_module_init(module_number TSRMLS_CC);
    return xcache_zend_extension_add(&xc_cacher_zend_extension_entry, 0);

err_init:
    return FAILURE;
}
/* }}} */
static PHP_MSHUTDOWN_FUNCTION(xcache_cacher) /* {{{ */
{
    xc_sandbox_module_shutdown();

    xcache_zend_extension_remove(&xc_cacher_zend_extension_entry);
    UNREGISTER_INI_ENTRIES();

    if (xc_mmap_path) {
        pefree(xc_mmap_path, 1);
        xc_mmap_path = NULL;
    }
    if (xc_shm_scheme) {
        pefree(xc_shm_scheme, 1);
        xc_shm_scheme = NULL;
    }

    return SUCCESS;
}
/* }}} */
static PHP_RINIT_FUNCTION(xcache_cacher) /* {{{ */
{
    xc_request_init(TSRMLS_C);
    return SUCCESS;
}
/* }}} */
/* {{{ static PHP_RSHUTDOWN_FUNCTION(xcache_cacher) */
#ifndef ZEND_ENGINE_2
static PHP_RSHUTDOWN_FUNCTION(xcache_cacher)
#else
static ZEND_MODULE_POST_ZEND_DEACTIVATE_D(xcache_cacher)
#endif
{
#ifdef ZEND_ENGINE_2
    TSRMLS_FETCH();
#endif

    xc_request_shutdown(TSRMLS_C);
    return SUCCESS;
}
/* }}} */
static zend_module_entry xcache_cacher_module_entry = { /* {{{ */
    STANDARD_MODULE_HEADER,
    XCACHE_NAME " Cacher",
    xcache_cacher_functions,
    PHP_MINIT(xcache_cacher),
    PHP_MSHUTDOWN(xcache_cacher),
    PHP_RINIT(xcache_cacher),
#ifndef ZEND_ENGINE_2
    PHP_RSHUTDOWN(xcache_cacher),
#else
    NULL,
#endif
    PHP_MINFO(xcache_cacher),
    XCACHE_VERSION,
#ifdef PHP_GINIT
    NO_MODULE_GLOBALS,
#endif
#ifdef ZEND_ENGINE_2
    ZEND_MODULE_POST_ZEND_DEACTIVATE_N(xcache_cacher),
#else
    NULL,
    NULL,
#endif
    STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
int xc_cacher_startup_module() /* {{{ */
{
    return zend_startup_module(&xcache_cacher_module_entry);
}
/* }}} */