source: trunk/processor/head.m4 @ 1439

Last change on this file since 1439 was 1439, checked in by moo, 11 months ago

code cleanup

  • Property svn:eol-style set to native
File size: 15.7 KB
RevLine 
[1]1dnl {{{ === program start ========================================
2divert(0)
3#include <string.h>
4#include <stdio.h>
5
6#include "php.h"
[189]7#include "zend_extensions.h"
[1]8#include "zend_compile.h"
9#include "zend_API.h"
[4]10#include "zend_ini.h"
[1]11
[1018]12/* export: #include "xcache.h" :export */
[1]13#include "xcache.h"
[1051]14/* export: #include "mod_cacher/xc_cache.h" :export */
15#include "mod_cacher/xc_cache.h"
[1135]16/* export: #include "xcache/xc_shm.h" :export */
17#include "xcache/xc_shm.h"
18/* export: #include "xcache/xc_allocator.h" :export */
19#include "xcache/xc_allocator.h"
[994]20#include "xcache/xc_const_string.h"
[1051]21#include "xcache/xc_utils.h"
[1135]22#include "util/xc_align.h"
[998]23#include "xc_processor.h"
[1]24#include "xcache_globals.h"
25
[58]26#if defined(HARDENING_PATCH_HASH_PROTECT) && HARDENING_PATCH_HASH_PROTECT
27extern unsigned int zend_hash_canary;
28#endif
29
[1]30define(`SIZEOF_zend_uint', `sizeof(zend_uint)')
31define(`COUNTOF_zend_uint', `1')
32define(`SIZEOF_int', `sizeof(int)')
33define(`COUNTOF_int', `1')
34define(`SIZEOF_zend_function', `sizeof(zend_function)')
35define(`COUNTOF_zend_function', `1')
36define(`SIZEOF_zval_ptr', `sizeof(zval_ptr)')
37define(`COUNTOF_zval_ptr', `1')
[825]38define(`SIZEOF_zval_ptr_nullable', `sizeof(zval_ptr_nullable)')
39define(`COUNTOF_zval_ptr_nullable', `1')
[836]40define(`SIZEOF_zend_trait_alias_ptr', `sizeof(zend_trait_alias)')
41define(`COUNTOF_zend_trait_alias_ptr', `1')
42define(`SIZEOF_zend_trait_precedence_ptr', `sizeof(zend_trait_precedence)')
43define(`COUNTOF_zend_trait_precedence_ptr', `1')
[1]44define(`SIZEOF_xc_entry_name_t', `sizeof(xc_entry_name_t)')
45define(`COUNTOF_xc_entry_name_t', `1')
[843]46define(`SIZEOF_xc_ztstring', `sizeof(xc_ztstring)')
47define(`COUNTOF_xc_ztstring', `1')
[1]48
49ifdef(`XCACHE_ENABLE_TEST', `
50#undef NDEBUG
51#include <assert.h>
[29]52m4_errprint(`AUTOCHECK INFO: runtime autocheck Enabled (debug build)')
53', `
54m4_errprint(`AUTOCHECK INFO: runtime autocheck Disabled (optimized build)')
[1]55')
[300]56ifdef(`DEBUG_SIZE', `static int xc_totalsize = 0;')
57
[29]58sinclude(builddir`/structinfo.m4')
59
[1]60#ifndef NDEBUG
61#   undef inline
62#define inline
63#endif
64
65typedef zval *zval_ptr;
[825]66typedef zval *zval_ptr_nullable;
[843]67typedef char *xc_ztstring;
[836]68#ifdef ZEND_ENGINE_2_4
69typedef zend_trait_alias *zend_trait_alias_ptr;
70typedef zend_trait_precedence *zend_trait_precedence_ptr;
71#endif
[917]72#ifdef ZEND_ENGINE_2_3
73typedef int last_brk_cont_t;
74#else
75typedef zend_uint last_brk_cont_t;
76#endif
[836]77
[917]78typedef zend_uchar xc_zval_type_t;
[843]79typedef int xc_op_type;
80typedef zend_uchar xc_opcode;
[103]81#ifdef IS_UNICODE
82typedef UChar zstr_uchar;
83#endif
84typedef char  zstr_char;
[1]85
86#define MAX_DUP_STR_LEN 256
87dnl }}}
[178]88/* export: typedef struct _xc_processor_t xc_processor_t; :export {{{ */
89struct _xc_processor_t {
[1]90    char *p;
[1201]91    size_t size;
[1]92    HashTable strings;
93    HashTable zvalptrs;
94    zend_bool reference; /* enable if to deal with reference */
[233]95    zend_bool have_references;
[851]96    const xc_entry_php_t *entry_php_src;
97    const xc_entry_php_t *entry_php_dst;
[311]98    const xc_entry_data_php_t *php_src;
99    const xc_entry_data_php_t *php_dst;
[1132]100    xc_shm_t                  *shm;
[1135]101    xc_allocator_t            *allocator;
[1]102    const zend_class_entry *cache_ce;
[1211]103    zend_ulong cache_class_index;
[1]104
[779]105    const zend_op_array    *active_op_array_src;
106    zend_op_array          *active_op_array_dst;
[1]107    const zend_class_entry *active_class_entry_src;
108    zend_class_entry       *active_class_entry_dst;
[662]109    zend_uint                 active_class_index;
110    zend_uint                 active_op_array_index;
111    const xc_op_array_info_t *active_op_array_infos_src;
[1]112
113    zend_bool readonly_protection; /* wheather it's present */
[877]114IFAUTOCHECK(xc_stack_t allocsizes;)
[1]115};
116/* }}} */
[930]117/* export: typedef struct _xc_dasm_t { const zend_op_array *active_op_array_src; } xc_dasm_t; :export {{{ */
118/* }}} */
[836]119/* {{{ memsetptr */
[877]120IFAUTOCHECK(`dnl
[836]121static void *memsetptr(void *mem, void *content, size_t n)
122{
123    void **p = (void **) mem;
[844]124    void **end = (void **) ((char *) mem + n);
[838]125    while (p < end - sizeof(content)) {
[836]126        *p = content;
127        p += sizeof(content);
128    }
[838]129    if (p < end) {
130        memset(p, -1, end - p);
131    }
[836]132    return mem;
133}
134')
135/* }}} */
[230]136#ifdef HAVE_XCACHE_DPRINT
[1]137static void xc_dprint_indent(int indent) /* {{{ */
138{
139    int i;
140    for (i = 0; i < indent; i ++) {
141        fprintf(stderr, "  ");
142    }
143}
[230]144/* }}} */
145static void xc_dprint_str_len(const char *str, int len) /* {{{ */
146{
[295]147    const unsigned char *p = (const unsigned char *) str;
[230]148    int i;
149    for (i = 0; i < len; i ++) {
150        if (p[i] < 32 || p[i] == 127) {
151            fprintf(stderr, "\\%03o", (unsigned int) p[i]);
152        }
153        else {
154            fputc(p[i], stderr);
155        }
156    }
157}
158/* }}} */
[1]159#endif
[1439]160static inline size_t xc_zstrlen_char(const_zstr s) /* {{{ */
[103]161{
162    return strlen(ZSTR_S(s));
163}
164/* }}} */
165#ifdef IS_UNICODE
[1439]166static inline size_t xc_zstrlen_uchar(zstr s) /* {{{ */
[103]167{
[512]168    return u_strlen(ZSTR_U(s));
[103]169}
170/* }}} */
[1439]171static inline size_t xc_zstrlen(int type, const_zstr s) /* {{{ */
[103]172{
173    return type == IS_UNICODE ? xc_zstrlen_uchar(s) : xc_zstrlen_char(s);
174}
175/* }}} */
176#else
177/* {{{ xc_zstrlen */
178#define xc_zstrlen(dummy, s) xc_zstrlen_char(s)
179/* }}} */
180#endif
[690]181#undef C_RELAYLINE
182#define C_RELAYLINE
[877]183IFAUTOCHECK(`
[690]184#undef C_RELAYLINE
185#define C_RELAYLINE , __LINE__
186')
[1439]187static inline void xc_calc_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
188    pushdef(`PROCESSOR_TYPE', `calc')
[1]189    pushdef(`__LINE__', `relayline')
[1201]190    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
[103]191    long dummy = 1;
[1]192
193    if (realsize > MAX_DUP_STR_LEN) {
194        ALLOC(, char, realsize)
195    }
[1201]196    else if (zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &dummy, sizeof(dummy), NULL) == SUCCESS) {
[1]197        /* new string */
198        ALLOC(, char, realsize)
199    }
[877]200    IFAUTOCHECK(`
[1]201        else {
[103]202            dnl fprintf(stderr, "dupstr %s\n", ZSTR_S(str));
[1]203        }
204    ')
205    popdef(`__LINE__')
[1439]206    popdef(`PROCESSOR_TYPE')
[1]207}
208/* }}} */
[1439]209static inline zstr xc_store_string_n(xc_processor_t *processor, zend_uchar type, const_zstr str, long size IFAUTOCHECK(`, int relayline')) { /* {{{ */
210    pushdef(`PROCESSOR_TYPE', `store')
[1]211    pushdef(`__LINE__', `relayline')
[1201]212    size_t realsize = UNISW(size, (type == IS_UNICODE) ? UBYTES(size) : size);
[103]213    zstr ret, *pret;
[1]214
215    if (realsize > MAX_DUP_STR_LEN) {
[103]216        ALLOC(ZSTR_V(ret), char, realsize)
217        memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
218        return ret;
[1]219    }
[103]220
[1201]221    if (zend_u_hash_find(&processor->strings, type, str, (uint) size, (void **) &pret) == SUCCESS) {
[103]222        return *pret;
[1]223    }
[103]224
225    /* new string */
226    ALLOC(ZSTR_V(ret), char, realsize)
227    memcpy(ZSTR_V(ret), ZSTR_V(str), realsize);
[1201]228    zend_u_hash_add(&processor->strings, type, str, (uint) size, (void *) &ret, sizeof(zstr), NULL);
[103]229    return ret;
230
[1]231    popdef(`__LINE__')
[1439]232    popdef(`PROCESSOR_TYPE')
[1]233}
234/* }}} */
235/* {{{ xc_get_class_num
236 * return class_index + 1
237 */
[1211]238static zend_ulong xc_get_class_num(xc_processor_t *processor, zend_class_entry *ce) {
[1201]239    zend_uint i;
[311]240    const xc_entry_data_php_t *php = processor->php_src;
[1]241    zend_class_entry *ceptr;
242
243    if (processor->cache_ce == ce) {
[662]244        return processor->cache_class_index + 1;
[1]245    }
[311]246    for (i = 0; i < php->classinfo_cnt; i ++) {
[1321]247        ceptr = CestToCePtr(php->classinfos[i].cest);
248        if (ZCEP_REFCOUNT_PTR(ceptr) == ZCEP_REFCOUNT_PTR(ce)) {
[1]249            processor->cache_ce = ceptr;
[667]250            processor->cache_class_index = i;
[1]251            return i + 1;
252        }
253    }
254    assert(0);
[90]255    return (zend_ulong) -1;
[1]256}
[1439]257define(`xc_get_class_num', `IFSTORE(``xc_get_class_num'($@)',``xc_get_class_num' can be use in store only')')
[1]258/* }}} */
[1321]259#ifdef ZEND_ENGINE_2
[1439]260static zend_class_entry *xc_get_class(xc_processor_t *processor, zend_ulong class_num) { /* {{{ */
[1]261    /* must be parent or currrent class */
[662]262    assert(class_num <= processor->active_class_index + 1);
[1321]263    return CestToCePtr(processor->php_dst->classinfos[class_num - 1].cest);
[1]264}
[1439]265define(`xc_get_class', `IFRESTORE(``xc_get_class'($@)',``xc_get_class' can be use in restore only')')
[1]266/* }}} */
[1439]267#endif
[1321]268#ifdef ZEND_ENGINE_2
[1]269/* fix method on store */
[507]270static void xc_fix_method(xc_processor_t *processor, zend_op_array *dst TSRMLS_DC) /* {{{ */
[1]271{
272    zend_function *zf = (zend_function *) dst;
273    zend_class_entry *ce = processor->active_class_entry_dst;
[507]274    const zend_class_entry *srcce = processor->active_class_entry_src;
[1]275
276    /* Fixing up the default functions for objects here since
277     * we need to compare with the newly allocated functions
278     *
279     * caveat: a sub-class method can have the same name as the
280     * parent~s constructor and create problems.
281     */
282
283    if (zf->common.fn_flags & ZEND_ACC_CTOR) {
284        if (!ce->constructor) {
285            ce->constructor = zf;
286        }
287    }
288    else if (zf->common.fn_flags & ZEND_ACC_DTOR) {
289        ce->destructor = zf;
290    }
291    else if (zf->common.fn_flags & ZEND_ACC_CLONE) {
292        ce->clone = zf;
293    }
294    else {
[507]295    pushdef(`SET_IF_SAME_NAMEs', `
[1]296        SET_IF_SAME_NAME(__get);
297        SET_IF_SAME_NAME(__set);
[56]298#ifdef ZEND_ENGINE_2_1
[1]299        SET_IF_SAME_NAME(__unset);
300        SET_IF_SAME_NAME(__isset);
[56]301#endif
[1]302        SET_IF_SAME_NAME(__call);
[480]303#ifdef ZEND_CALLSTATIC_FUNC_NAME
304        SET_IF_SAME_NAME(__callstatic);
305#endif
[94]306#if defined(ZEND_ENGINE_2_2) || PHP_MAJOR_VERSION >= 6
[1]307        SET_IF_SAME_NAME(__tostring);
308#endif
[507]309    ')
310#ifdef IS_UNICODE
311        if (UG(unicode)) {
312#define SET_IF_SAME_NAME(member) \
313            do { \
[509]314                if (srcce->member && u_strcmp(ZSTR_U(zf->common.function_name), ZSTR_U(srcce->member->common.function_name)) == 0) { \
[507]315                    ce->member = zf; \
316                } \
317            } \
318            while(0)
[1]319
[507]320            SET_IF_SAME_NAMEs()
[1]321#undef SET_IF_SAME_NAME
[507]322        }
323        else
324#endif
325        do {
326#define SET_IF_SAME_NAME(member) \
327            do { \
328                if (srcce->member && strcmp(ZSTR_S(zf->common.function_name), ZSTR_S(srcce->member->common.function_name)) == 0) { \
329                    ce->member = zf; \
330                } \
331            } \
332            while(0)
333
334            SET_IF_SAME_NAMEs()
335#undef SET_IF_SAME_NAME
336        } while (0);
337
338    popdef(`SET_IF_SAME_NAMEs')
339
[1]340    }
341}
342/* }}} */
[1321]343#endif
[195]344/* {{{ call op_array ctor handler */
345extern zend_bool xc_have_op_array_ctor;
346static void xc_zend_extension_op_array_ctor_handler(zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
347{
348    if (extension->op_array_ctor) {
349        extension->op_array_ctor(op_array);
350    }
351}
352/* }}} */
[719]353/* {{{ field name checker */
[877]354IFAUTOCHECK(`dnl
[1201]355static int xc_check_names(const char *file, int line, const char *functionName, const char **assert_names, size_t assert_names_count, HashTable *done_names)
[719]356{
357    int errors = 0;
358    if (assert_names_count) {
[1201]359        size_t i;
[719]360        Bucket *b;
361
362        for (i = 0; i < assert_names_count; ++i) {
[1201]363            if (!zend_u_hash_exists(done_names, IS_STRING, assert_names[i], (uint) strlen(assert_names[i]) + 1)) {
[719]364                fprintf(stderr
[1051]365                    , "Error: missing field at %s `#'%d %s`' : %s\n"
[719]366                    , file, line, functionName
367                    , assert_names[i]
368                    );
369                ++errors;
370            }
371        }
372
373        for (b = done_names->pListHead; b != NULL; b = b->pListNext) {
374            int known = 0;
375            for (i = 0; i < assert_names_count; ++i) {
376                if (strcmp(assert_names[i], BUCKET_KEY_S(b)) == 0) {
377                    known = 1;
378                    break;
379                }
380            }
381            if (!known) {
382                fprintf(stderr
[1051]383                    , "Error: unknown field at %s `#'%d %s`' : %s\n"
[719]384                    , file, line, functionName
385                    , BUCKET_KEY_S(b)
386                    );
387                ++errors;
388            }
389        }
390    }
391    return errors;
392}
393')
394/* }}} */
[1]395dnl ================ export API
[311]396define(`DEFINE_STORE_API', `
[1135]397/* export: $1 *xc_processor_store_$1(xc_shm_t *shm, xc_allocator_t *allocator, $1 *src TSRMLS_DC); :export {{{ */
398$1 *xc_processor_store_$1(xc_shm_t *shm, xc_allocator_t *allocator, $1 *src TSRMLS_DC) {
[311]399    $1 *dst;
[178]400    xc_processor_t processor;
[1]401
402    memset(&processor, 0, sizeof(processor));
[233]403    processor.reference = 1;
[1132]404    processor.shm = shm;
[1135]405    processor.allocator = allocator;
[1]406
[877]407    IFAUTOCHECK(`xc_stack_init(&processor.allocsizes);')
[1]408
409    /* calc size */ {
410        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
411        if (processor.reference) {
412            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
413        }
414
415        processor.size = 0;
416        /* allocate */
417        processor.size = ALIGN(processor.size + sizeof(src[0]));
418
[311]419        xc_calc_$1(&processor, src TSRMLS_CC);
[1]420        if (processor.reference) {
421            zend_hash_destroy(&processor.zvalptrs);
422        }
423        zend_hash_destroy(&processor.strings);
424    }
[851]425    ifelse(
[1380]426        `$1', `xc_entry_data_php_t', `SRC(`size')',
427        `', `', SRC(`entry.size')) = processor.size;
428    ifelse(
429        `$1', `xc_entry_var_t', `SRC(`have_references') = processor.have_references;',
430        `$1', `xc_entry_data_php_t', `SRC(`have_references') = processor.have_references;'
[851]431    )
[1]432
[877]433    IFAUTOCHECK(`xc_stack_reverse(&processor.allocsizes);')
[1]434    /* store {{{ */
435    {
[877]436        IFAUTOCHECK(`char *oldp;')
[1]437        zend_hash_init(&processor.strings, 0, NULL, NULL, 0);
438        if (processor.reference) {
439            zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
440        }
441
[1135]442        /* allocator :) */
443        processor.p = (char *) processor.allocator->vtable->malloc(processor.allocator, processor.size);
[1]444        if (processor.p == NULL) {
445            dst = NULL;
446            goto err_alloc;
447        }
[877]448        IFAUTOCHECK(`oldp = processor.p;')
[1]449        assert(processor.p == (char *) ALIGN(processor.p));
450
451        /* allocate */
[311]452        dst = ($1 *) processor.p;
[1]453        processor.p = (char *) ALIGN(processor.p + sizeof(dst[0]));
454
[311]455        xc_store_$1(&processor, dst, src TSRMLS_CC);
[877]456        IFAUTOCHECK(` {
[1009]457            size_t unexpected = processor.p - oldp;
458            size_t expected = processor.size;
459            if (unexpected != processor.size) {
460                fprintf(stderr, "unexpected:%lu - expected:%lu = %ld != 0\n", (unsigned long) unexpected, (unsigned long) expected, (long) unexpected - expected);
[1]461                abort();
462            }
463        }')
464err_alloc:
465        if (processor.reference) {
466            zend_hash_destroy(&processor.zvalptrs);
467        }
468        zend_hash_destroy(&processor.strings);
469    }
470    /* }}} */
471
[877]472    IFAUTOCHECK(`xc_stack_destroy(&processor.allocsizes);')
[1]473
474    return dst;
475}
476/* }}} */
[311]477')
[856]478DEFINE_STORE_API(`xc_entry_var_t')
[851]479DEFINE_STORE_API(`xc_entry_php_t')
[311]480DEFINE_STORE_API(`xc_entry_data_php_t')
[851]481/* export: xc_entry_php_t *xc_processor_restore_xc_entry_php_t(xc_entry_php_t *dst, const xc_entry_php_t *src TSRMLS_DC); :export {{{ */
482xc_entry_php_t *xc_processor_restore_xc_entry_php_t(xc_entry_php_t *dst, const xc_entry_php_t *src TSRMLS_DC) {
[178]483    xc_processor_t processor;
[1]484
485    memset(&processor, 0, sizeof(processor));
[851]486    xc_restore_xc_entry_php_t(&processor, dst, src TSRMLS_CC);
[311]487
488    return dst;
489}
490/* }}} */
[865]491/* export: xc_entry_data_php_t *xc_processor_restore_xc_entry_data_php_t(const xc_entry_php_t *entry_php, xc_entry_data_php_t *dst, const xc_entry_data_php_t *src, zend_bool readonly_protection TSRMLS_DC); :export {{{ */
492xc_entry_data_php_t *xc_processor_restore_xc_entry_data_php_t(const xc_entry_php_t *entry_php, xc_entry_data_php_t *dst, const xc_entry_data_php_t *src, zend_bool readonly_protection TSRMLS_DC) {
[311]493    xc_processor_t processor;
494
495    memset(&processor, 0, sizeof(processor));
[1]496    processor.readonly_protection = readonly_protection;
[311]497    /* this function is used for php data only */
[1380]498    if (SRC(`have_references')) {
[233]499        processor.reference = 1;
500    }
[865]501    processor.entry_php_src = entry_php;
[1]502
[233]503    if (processor.reference) {
504        zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
505    }
[311]506    xc_restore_xc_entry_data_php_t(&processor, dst, src TSRMLS_CC);
[233]507    if (processor.reference) {
508        zend_hash_destroy(&processor.zvalptrs);
509    }
[1]510    return dst;
511}
512/* }}} */
[856]513/* export: xc_entry_var_t *xc_processor_restore_xc_entry_var_t(xc_entry_var_t *dst, const xc_entry_var_t *src TSRMLS_DC); :export {{{ */
514xc_entry_var_t *xc_processor_restore_xc_entry_var_t(xc_entry_var_t *dst, const xc_entry_var_t *src TSRMLS_DC) {
[851]515    xc_processor_t processor;
516
517    memset(&processor, 0, sizeof(processor));
[856]518    xc_restore_xc_entry_var_t(&processor, dst, src TSRMLS_CC);
[851]519
520    return dst;
521}
522/* }}} */
[233]523/* export: zval *xc_processor_restore_zval(zval *dst, const zval *src, zend_bool have_references TSRMLS_DC); :export {{{ */
524zval *xc_processor_restore_zval(zval *dst, const zval *src, zend_bool have_references TSRMLS_DC) {
[178]525    xc_processor_t processor;
[1]526
527    memset(&processor, 0, sizeof(processor));
[233]528    processor.reference = have_references;
[1]529
[233]530    if (processor.reference) {
531        zend_hash_init(&processor.zvalptrs, 0, NULL, NULL, 0);
532        dnl fprintf(stderr, "mark[%p] = %p\n", src, dst);
533        zend_hash_add(&processor.zvalptrs, (char *)src, sizeof(src), (void*)&dst, sizeof(dst), NULL);
534    }
[1]535    xc_restore_zval(&processor, dst, src TSRMLS_CC);
[233]536    if (processor.reference) {
537        zend_hash_destroy(&processor.zvalptrs);
538    }
[1]539
540    return dst;
541}
542/* }}} */
[851]543/* export: void xc_dprint(xc_entry_php_t *src, int indent TSRMLS_DC); :export {{{ */
[230]544#ifdef HAVE_XCACHE_DPRINT
[851]545void xc_dprint(xc_entry_php_t *src, int indent TSRMLS_DC) {
[856]546    IFDPRINT(`INDENT()`'fprintf(stderr, "xc_entry_php_t:src");')
547    xc_dprint_xc_entry_php_t(src, indent TSRMLS_CC);
[1]548}
549#endif
550/* }}} */
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