source: trunk/xcache/xc_extension.c @ 1045

#include "xc_extension.h"
#include "xcache.h"
#include "util/xc_trace.h"


int xcache_zend_extension_prepend(zend_extension *new_extension) /* {{{ */
{
    zend_extension extension;

    extension = *new_extension;
    extension.handle = 0;

    zend_extension_dispatch_message(ZEND_EXTMSG_NEW_EXTENSION, &extension);

    zend_llist_prepend_element(&zend_extensions, &extension);
    TRACE("%s", "prepended");
    return SUCCESS;
}
/* }}} */
static int xc_ptr_compare_func(void *p1, void *p2) /* {{{ */
{
    return p1 == p2;
}
/* }}} */
static int xc_zend_extension_remove(zend_extension *extension) /* {{{ */
{
    llist_dtor_func_t dtor;

    assert(extension);
    dtor = zend_extensions.dtor; /* avoid dtor */
    zend_extensions.dtor = NULL;
    zend_llist_del_element(&zend_extensions, extension, xc_ptr_compare_func);
    zend_extensions.dtor = dtor;
    return SUCCESS;
}
/* }}} */
int xcache_zend_extension_remove(zend_extension *extension) /* {{{ */
{
    zend_extension *ext = zend_get_extension(extension->name);
    if (!ext) {
        return FAILURE;
    }

    if (ext->shutdown) {
        ext->shutdown(ext);
    }
    xc_zend_extension_remove(ext);
    return SUCCESS;
}
/* }}} */

int xcache_zend_extension_count_by_prefix(zend_llist *l, const char *extension_name_prefix) /* {{{ */
{
    zend_llist_element *element;
    size_t n = strlen(extension_name_prefix);
    int count = 0;

    for (element = zend_extensions.head; element; element = element->next) {
        zend_extension *extension = (zend_extension *) element->data;

        if (strncmp(extension->name, extension_name_prefix, n) == 0) {
            ++count;
        }
    }
    return count;
}
/* }}} */
void xcache_zend_extension_unlink_by_prefix(xc_stack_t *linked, zend_llist *l, const char *extension_name_prefix) /* {{{ */
{
    size_t n = strlen(extension_name_prefix);
    zend_llist_element *unlinked = NULL;
    zend_llist_element *element, *next;

    for (element = zend_extensions.head; element; element = next) {
        zend_extension *extension = (zend_extension *) element->data;
        next = element->next;

        if (strncmp(extension->name, extension_name_prefix, n) == 0) {
            xcache_llist_unlink(l, element);
            xc_stack_push(linked, element);
        }
    }

    for (element = zend_extensions.head; element; element = next) {
        zend_extension *extension = (zend_extension *) element->data;
        next = element->next;
    }
}
/* }}} */
void xcache_llist_prepend(zend_llist *l, zend_llist_element *element) /* {{{ */
{
    element->next = l->head;
    element->prev = NULL;
    if (l->head) {
        l->head->prev = element;
    }
    else {
        l->tail = element;
    }
    l->head = element;
    ++l->count;
}
/* }}} */
void xcache_llist_unlink(zend_llist *l, zend_llist_element *element) /* {{{ */
{
    if ((element)->prev) {
        (element)->prev->next = (element)->next;
    }
    else {
        (l)->head = (element)->next;
    }

    if ((element)->next) {
        (element)->next->prev = (element)->prev;
    }
    else {
        (l)->tail = (element)->prev;
    }

    --l->count;
}
/* }}} */