mirror of
https://github.com/php/php-src.git
synced 2024-12-01 13:54:10 +08:00
355 lines
8.7 KiB
C
355 lines
8.7 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2001 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 0.92 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.zend.com/license/0_92.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* resource lists */
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#include "zend.h"
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#include "zend_list.h"
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#include "zend_API.h"
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#include "zend_globals.h"
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ZEND_API int le_index_ptr;
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/* true global */
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static HashTable list_destructors;
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ZEND_API int zend_list_insert(void *ptr, int type)
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{
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int index;
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zend_rsrc_list_entry le;
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ELS_FETCH();
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le.ptr=ptr;
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le.type=type;
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le.refcount=1;
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index = zend_hash_next_free_element(&EG(regular_list));
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zend_hash_index_update(&EG(regular_list), index, (void *) &le, sizeof(zend_rsrc_list_entry), NULL);
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return index;
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}
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ZEND_API int zend_list_delete(int id)
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{
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zend_rsrc_list_entry *le;
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ELS_FETCH();
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if (zend_hash_index_find(&EG(regular_list), id, (void **) &le)==SUCCESS) {
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/* printf("del(%d): %d->%d\n", id, le->refcount, le->refcount-1); */
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if (--le->refcount<=0) {
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return zend_hash_index_del(&EG(regular_list), id);
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} else {
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return SUCCESS;
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}
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} else {
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return FAILURE;
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}
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}
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ZEND_API void *zend_list_find(int id, int *type)
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{
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zend_rsrc_list_entry *le;
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ELS_FETCH();
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if (zend_hash_index_find(&EG(regular_list), id, (void **) &le)==SUCCESS) {
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*type = le->type;
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return le->ptr;
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} else {
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*type = -1;
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return NULL;
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}
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}
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ZEND_API int zend_list_addref(int id)
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{
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zend_rsrc_list_entry *le;
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ELS_FETCH();
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if (zend_hash_index_find(&EG(regular_list), id, (void **) &le)==SUCCESS) {
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/* printf("add(%d): %d->%d\n", id, le->refcount, le->refcount+1); */
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le->refcount++;
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return SUCCESS;
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} else {
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return FAILURE;
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}
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}
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ZEND_API int zend_register_resource(zval *rsrc_result, void *rsrc_pointer, int rsrc_type)
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{
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int rsrc_id;
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rsrc_id = zend_list_insert(rsrc_pointer, rsrc_type);
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if (rsrc_result) {
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rsrc_result->value.lval = rsrc_id;
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rsrc_result->type = IS_RESOURCE;
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}
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return rsrc_id;
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}
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ZEND_API void *zend_fetch_resource(zval **passed_id, int default_id, char *resource_type_name, int *found_resource_type, int num_resource_types, ...)
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{
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int id;
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int actual_resource_type;
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void *resource;
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va_list resource_types;
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int i;
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if (default_id==-1) { /* use id */
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if (!passed_id) {
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if (resource_type_name) {
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zend_error(E_WARNING, "No %s resource supplied", resource_type_name);
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}
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return NULL;
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} else if ((*passed_id)->type != IS_RESOURCE) {
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if (resource_type_name) {
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zend_error(E_WARNING, "Supplied argument is not a valid %s resource", resource_type_name);
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}
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return NULL;
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}
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id = (*passed_id)->value.lval;
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} else {
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id = default_id;
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}
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resource = zend_list_find(id, &actual_resource_type);
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if (!resource) {
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if (resource_type_name) {
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zend_error(E_WARNING, "%d is not a valid %s resource", id, resource_type_name);
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}
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return NULL;
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}
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va_start(resource_types, num_resource_types);
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for (i=0; i<num_resource_types; i++) {
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if (actual_resource_type == va_arg(resource_types, int)) {
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va_end(resource_types);
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if (found_resource_type) {
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*found_resource_type = actual_resource_type;
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}
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return resource;
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}
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}
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va_end(resource_types);
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if (resource_type_name) {
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zend_error(E_WARNING, "Supplied resource is not a valid %s resource", resource_type_name);
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}
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return NULL;
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}
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void list_entry_destructor(void *ptr)
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{
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zend_rsrc_list_entry *le = (zend_rsrc_list_entry *) ptr;
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zend_rsrc_list_dtors_entry *ld;
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if (zend_hash_index_find(&list_destructors, le->type,(void **) &ld)==SUCCESS) {
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switch (ld->type) {
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case ZEND_RESOURCE_LIST_TYPE_STD:
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if (ld->list_dtor) {
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(ld->list_dtor)(le->ptr);
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}
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break;
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case ZEND_RESOURCE_LIST_TYPE_EX:
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if (ld->list_dtor_ex) {
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ld->list_dtor_ex(le);
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}
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break;
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EMPTY_SWITCH_DEFAULT_CASE()
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}
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} else {
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zend_error(E_WARNING,"Unknown list entry type in request shutdown (%d)",le->type);
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}
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}
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void plist_entry_destructor(void *ptr)
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{
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zend_rsrc_list_entry *le = (zend_rsrc_list_entry *) ptr;
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zend_rsrc_list_dtors_entry *ld;
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if (zend_hash_index_find(&list_destructors, le->type,(void **) &ld)==SUCCESS) {
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switch (ld->type) {
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case ZEND_RESOURCE_LIST_TYPE_STD:
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if (ld->plist_dtor) {
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(ld->plist_dtor)(le->ptr);
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}
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break;
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case ZEND_RESOURCE_LIST_TYPE_EX:
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if (ld->plist_dtor_ex) {
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ld->plist_dtor_ex(le);
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}
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break;
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EMPTY_SWITCH_DEFAULT_CASE()
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}
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} else {
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zend_error(E_WARNING,"Unknown persistent list entry type in module shutdown (%d)",le->type);
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}
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}
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int zend_init_rsrc_list(ELS_D)
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{
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if (zend_hash_init(&EG(regular_list), 0, NULL, list_entry_destructor, 0)==SUCCESS) {
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EG(regular_list).nNextFreeElement=1; /* we don't want resource id 0 */
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return SUCCESS;
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} else {
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return FAILURE;
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}
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}
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int zend_init_rsrc_plist(ELS_D)
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{
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return zend_hash_init_ex(&EG(persistent_list), 0, NULL, plist_entry_destructor, 1, 0);
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}
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void zend_destroy_rsrc_list(ELS_D)
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{
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zend_hash_graceful_destroy(&EG(regular_list));
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}
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void zend_destroy_rsrc_plist(ELS_D)
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{
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zend_hash_graceful_destroy(&EG(persistent_list));
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}
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static int clean_module_resource(zend_rsrc_list_entry *le, int *resource_id)
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{
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if (le->type == *resource_id) {
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return 1;
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} else {
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return 0;
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}
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}
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static int zend_clean_module_rsrc_dtors_cb(zend_rsrc_list_dtors_entry *ld, int *module_number)
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{
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if (ld->module_number == *module_number) {
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ELS_FETCH();
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zend_hash_apply_with_argument(&EG(regular_list), (int (*)(void *,void *)) clean_module_resource, (void *) &(ld->resource_id));
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zend_hash_apply_with_argument(&EG(persistent_list), (int (*)(void *,void *)) clean_module_resource, (void *) &(ld->resource_id));
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return 1;
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} else {
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return 0;
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}
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}
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void zend_clean_module_rsrc_dtors(int module_number)
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{
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zend_hash_apply_with_argument(&list_destructors, (int (*)(void *,void *)) zend_clean_module_rsrc_dtors_cb, (void *) &module_number);
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}
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ZEND_API int zend_register_list_destructors(void (*ld)(void *), void (*pld)(void *), int module_number)
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{
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zend_rsrc_list_dtors_entry lde;
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#if 0
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printf("Registering destructors %d for module %d\n", list_destructors.nNextFreeElement, module_number);
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#endif
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lde.list_dtor=(void (*)(void *)) ld;
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lde.plist_dtor=(void (*)(void *)) pld;
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lde.list_dtor_ex = lde.plist_dtor_ex = NULL;
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lde.module_number = module_number;
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lde.resource_id = list_destructors.nNextFreeElement;
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lde.type = ZEND_RESOURCE_LIST_TYPE_STD;
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lde.type_name = NULL;
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if (zend_hash_next_index_insert(&list_destructors, (void *) &lde, sizeof(zend_rsrc_list_dtors_entry), NULL)==FAILURE) {
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return FAILURE;
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}
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return list_destructors.nNextFreeElement-1;
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}
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ZEND_API int zend_register_list_destructors_ex(rsrc_dtor_func_t ld, rsrc_dtor_func_t pld, char *type_name, int module_number)
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{
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zend_rsrc_list_dtors_entry lde;
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#if 0
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printf("Registering destructors %d for module %d\n", list_destructors.nNextFreeElement, module_number);
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#endif
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lde.list_dtor = NULL;
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lde.plist_dtor = NULL;
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lde.list_dtor_ex = ld;
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lde.plist_dtor_ex = pld;
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lde.module_number = module_number;
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lde.resource_id = list_destructors.nNextFreeElement;
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lde.type = ZEND_RESOURCE_LIST_TYPE_EX;
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lde.type_name = type_name;
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if (zend_hash_next_index_insert(&list_destructors,(void *) &lde, sizeof(zend_rsrc_list_dtors_entry),NULL)==FAILURE) {
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return FAILURE;
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}
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return list_destructors.nNextFreeElement-1;
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}
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int zend_init_rsrc_list_dtors(void)
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{
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return zend_hash_init(&list_destructors, 50, NULL, NULL, 1);
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}
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void zend_destroy_rsrc_list_dtors(void)
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{
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zend_hash_destroy(&list_destructors);
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}
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char *zend_rsrc_list_get_rsrc_type(int resource)
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{
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zend_rsrc_list_dtors_entry *lde;
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int rsrc_type;
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if (!zend_list_find(resource, &rsrc_type))
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return NULL;
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if (zend_hash_index_find(&list_destructors, rsrc_type, (void **) &lde)==SUCCESS) {
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return lde->type_name;
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} else {
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return NULL;
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}
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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*/
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