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Code Editor : zend_persist_calc.c
/* +----------------------------------------------------------------------+ | Zend OPcache | +----------------------------------------------------------------------+ | Copyright (c) The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.01 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | https://www.php.net/license/3_01.txt | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Andi Gutmans <andi@php.net> | | Zeev Suraski <zeev@php.net> | | Stanislav Malyshev <stas@zend.com> | | Dmitry Stogov <dmitry@php.net> | +----------------------------------------------------------------------+ */ #include "zend.h" #include "ZendAccelerator.h" #include "zend_persist.h" #include "zend_extensions.h" #include "zend_shared_alloc.h" #include "zend_operators.h" #include "zend_attributes.h" #define ADD_DUP_SIZE(m,s) ZCG(current_persistent_script)->size += zend_shared_memdup_size((void*)m, s) #define ADD_SIZE(m) ZCG(current_persistent_script)->size += ZEND_ALIGNED_SIZE(m) # define ADD_STRING(str) ADD_DUP_SIZE((str), _ZSTR_STRUCT_SIZE(ZSTR_LEN(str))) # define ADD_INTERNED_STRING(str) do { \ if (ZCG(current_persistent_script)->corrupted) { \ ADD_STRING(str); \ } else if (!IS_ACCEL_INTERNED(str)) { \ zend_string *tmp = accel_new_interned_string(str); \ if (tmp != (str)) { \ (str) = tmp; \ } else { \ ADD_STRING(str); \ } \ } \ } while (0) static void zend_persist_zval_calc(zval *z); static void zend_persist_op_array_calc(zval *zv); static void zend_hash_persist_calc(HashTable *ht) { if ((HT_FLAGS(ht) & HASH_FLAG_UNINITIALIZED) || ht->nNumUsed == 0) { return; } if (!(HT_FLAGS(ht) & HASH_FLAG_PACKED) && ht->nNumUsed > HT_MIN_SIZE && ht->nNumUsed < (uint32_t)(-(int32_t)ht->nTableMask) / 4) { /* compact table */ uint32_t hash_size; hash_size = (uint32_t)(-(int32_t)ht->nTableMask); while (hash_size >> 2 > ht->nNumUsed) { hash_size >>= 1; } ADD_SIZE(hash_size * sizeof(uint32_t) + ht->nNumUsed * sizeof(Bucket)); } else { ADD_SIZE(HT_USED_SIZE(ht)); } } static void zend_persist_ast_calc(zend_ast *ast) { uint32_t i; if (ast->kind == ZEND_AST_ZVAL || ast->kind == ZEND_AST_CONSTANT) { ADD_SIZE(sizeof(zend_ast_zval)); zend_persist_zval_calc(&((zend_ast_zval*)(ast))->val); } else if (zend_ast_is_list(ast)) { zend_ast_list *list = zend_ast_get_list(ast); ADD_SIZE(sizeof(zend_ast_list) - sizeof(zend_ast *) + sizeof(zend_ast *) * list->children); for (i = 0; i < list->children; i++) { if (list->child[i]) { zend_persist_ast_calc(list->child[i]); } } } else { uint32_t children = zend_ast_get_num_children(ast); ADD_SIZE(sizeof(zend_ast) - sizeof(zend_ast *) + sizeof(zend_ast *) * children); for (i = 0; i < children; i++) { if (ast->child[i]) { zend_persist_ast_calc(ast->child[i]); } } } } static void zend_persist_zval_calc(zval *z) { uint32_t size; switch (Z_TYPE_P(z)) { case IS_STRING: ADD_INTERNED_STRING(Z_STR_P(z)); if (ZSTR_IS_INTERNED(Z_STR_P(z))) { Z_TYPE_FLAGS_P(z) = 0; } break; case IS_ARRAY: if (!ZCG(current_persistent_script)->corrupted && zend_accel_in_shm(Z_ARR_P(z))) { return; } size = zend_shared_memdup_size(Z_ARR_P(z), sizeof(zend_array)); if (size) { Bucket *p; ADD_SIZE(size); zend_hash_persist_calc(Z_ARRVAL_P(z)); ZEND_HASH_FOREACH_BUCKET(Z_ARRVAL_P(z), p) { if (p->key) { ADD_INTERNED_STRING(p->key); } zend_persist_zval_calc(&p->val); } ZEND_HASH_FOREACH_END(); } break; case IS_CONSTANT_AST: if (ZCG(current_persistent_script)->corrupted || !zend_accel_in_shm(Z_AST_P(z))) { size = zend_shared_memdup_size(Z_AST_P(z), sizeof(zend_ast_ref)); if (size) { ADD_SIZE(size); zend_persist_ast_calc(Z_ASTVAL_P(z)); } } break; default: ZEND_ASSERT(Z_TYPE_P(z) < IS_STRING); break; } } static void zend_persist_attributes_calc(HashTable *attributes) { if (!zend_shared_alloc_get_xlat_entry(attributes) && (ZCG(current_persistent_script)->corrupted || !zend_accel_in_shm(attributes))) { zend_attribute *attr; uint32_t i; zend_shared_alloc_register_xlat_entry(attributes, attributes); ADD_SIZE(sizeof(HashTable)); zend_hash_persist_calc(attributes); ZEND_HASH_FOREACH_PTR(attributes, attr) { ADD_SIZE(ZEND_ATTRIBUTE_SIZE(attr->argc)); ADD_INTERNED_STRING(attr->name); ADD_INTERNED_STRING(attr->lcname); for (i = 0; i < attr->argc; i++) { if (attr->args[i].name) { ADD_INTERNED_STRING(attr->args[i].name); } zend_persist_zval_calc(&attr->args[i].value); } } ZEND_HASH_FOREACH_END(); } } static void zend_persist_type_calc(zend_type *type) { if (ZEND_TYPE_HAS_LIST(*type)) { ADD_SIZE(ZEND_TYPE_LIST_SIZE(ZEND_TYPE_LIST(*type)->num_types)); } zend_type *single_type; ZEND_TYPE_FOREACH(*type, single_type) { if (ZEND_TYPE_HAS_NAME(*single_type)) { zend_string *type_name = ZEND_TYPE_NAME(*single_type); ADD_INTERNED_STRING(type_name); ZEND_TYPE_SET_PTR(*single_type, type_name); } } ZEND_TYPE_FOREACH_END(); } static void zend_persist_op_array_calc_ex(zend_op_array *op_array) { if (op_array->function_name) { zend_string *old_name = op_array->function_name; ADD_INTERNED_STRING(op_array->function_name); /* Remember old function name, so it can be released multiple times if shared. */ if (op_array->function_name != old_name && !zend_shared_alloc_get_xlat_entry(&op_array->function_name)) { zend_shared_alloc_register_xlat_entry(&op_array->function_name, old_name); } } if (op_array->scope) { if (zend_shared_alloc_get_xlat_entry(op_array->opcodes)) { /* already stored */ ADD_SIZE(ZEND_ALIGNED_SIZE(zend_extensions_op_array_persist_calc(op_array))); return; } } if (op_array->scope && !(op_array->fn_flags & ZEND_ACC_CLOSURE) && (op_array->scope->ce_flags & ZEND_ACC_CACHED)) { return; } if (op_array->static_variables && !zend_accel_in_shm(op_array->static_variables)) { if (!zend_shared_alloc_get_xlat_entry(op_array->static_variables)) { Bucket *p; zend_shared_alloc_register_xlat_entry(op_array->static_variables, op_array->static_variables); ADD_SIZE(sizeof(HashTable)); zend_hash_persist_calc(op_array->static_variables); ZEND_HASH_FOREACH_BUCKET(op_array->static_variables, p) { ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); zend_persist_zval_calc(&p->val); } ZEND_HASH_FOREACH_END(); } } if (op_array->literals) { zval *p = op_array->literals; zval *end = p + op_array->last_literal; ADD_SIZE(sizeof(zval) * op_array->last_literal); while (p < end) { zend_persist_zval_calc(p); p++; } } zend_shared_alloc_register_xlat_entry(op_array->opcodes, op_array->opcodes); ADD_SIZE(sizeof(zend_op) * op_array->last); if (op_array->filename) { ADD_STRING(op_array->filename); } if (op_array->arg_info) { zend_arg_info *arg_info = op_array->arg_info; uint32_t num_args = op_array->num_args; uint32_t i; if (op_array->fn_flags & ZEND_ACC_VARIADIC) { num_args++; } if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) { arg_info--; num_args++; } ADD_SIZE(sizeof(zend_arg_info) * num_args); for (i = 0; i < num_args; i++) { if (arg_info[i].name) { ADD_INTERNED_STRING(arg_info[i].name); } zend_persist_type_calc(&arg_info[i].type); } } if (op_array->live_range) { ADD_SIZE(sizeof(zend_live_range) * op_array->last_live_range); } if (ZCG(accel_directives).save_comments && op_array->doc_comment) { ADD_STRING(op_array->doc_comment); } if (op_array->attributes) { zend_persist_attributes_calc(op_array->attributes); } if (op_array->try_catch_array) { ADD_SIZE(sizeof(zend_try_catch_element) * op_array->last_try_catch); } if (op_array->vars) { int i; ADD_SIZE(sizeof(zend_string*) * op_array->last_var); for (i = 0; i < op_array->last_var; i++) { ADD_INTERNED_STRING(op_array->vars[i]); } } if (op_array->num_dynamic_func_defs) { ADD_SIZE(sizeof(void *) * op_array->num_dynamic_func_defs); for (uint32_t i = 0; i < op_array->num_dynamic_func_defs; i++) { zval tmp; ZVAL_PTR(&tmp, op_array->dynamic_func_defs[i]); zend_persist_op_array_calc(&tmp); } } ADD_SIZE(ZEND_ALIGNED_SIZE(zend_extensions_op_array_persist_calc(op_array))); } static void zend_persist_op_array_calc(zval *zv) { zend_op_array *op_array = Z_PTR_P(zv); ZEND_ASSERT(op_array->type == ZEND_USER_FUNCTION); if (!zend_shared_alloc_get_xlat_entry(op_array)) { zend_shared_alloc_register_xlat_entry(op_array, op_array); ADD_SIZE(sizeof(zend_op_array)); zend_persist_op_array_calc_ex(op_array); } else { /* This can happen during preloading, if a dynamic function definition is declared. */ } } static void zend_persist_class_method_calc(zval *zv) { zend_op_array *op_array = Z_PTR_P(zv); zend_op_array *old_op_array; if (op_array->type != ZEND_USER_FUNCTION) { ZEND_ASSERT(op_array->type == ZEND_INTERNAL_FUNCTION); if (op_array->fn_flags & ZEND_ACC_ARENA_ALLOCATED) { old_op_array = zend_shared_alloc_get_xlat_entry(op_array); if (!old_op_array) { ADD_SIZE(sizeof(zend_internal_function)); zend_shared_alloc_register_xlat_entry(op_array, Z_PTR_P(zv)); } } return; } if ((op_array->fn_flags & ZEND_ACC_IMMUTABLE) && !ZCG(current_persistent_script)->corrupted && zend_accel_in_shm(op_array)) { zend_shared_alloc_register_xlat_entry(op_array, op_array); return; } old_op_array = zend_shared_alloc_get_xlat_entry(op_array); if (!old_op_array) { ADD_SIZE(sizeof(zend_op_array)); zend_persist_op_array_calc_ex(Z_PTR_P(zv)); zend_shared_alloc_register_xlat_entry(op_array, Z_PTR_P(zv)); } else { /* If op_array is shared, the function name refcount is still incremented for each use, * so we need to release it here. We remembered the original function name in xlat. */ zend_string *old_function_name = zend_shared_alloc_get_xlat_entry(&old_op_array->function_name); if (old_function_name) { zend_string_release_ex(old_function_name, 0); } } } static void zend_persist_property_info_calc(zend_property_info *prop) { ADD_SIZE(sizeof(zend_property_info)); ADD_INTERNED_STRING(prop->name); zend_persist_type_calc(&prop->type); if (ZCG(accel_directives).save_comments && prop->doc_comment) { ADD_STRING(prop->doc_comment); } if (prop->attributes) { zend_persist_attributes_calc(prop->attributes); } } static void zend_persist_class_constant_calc(zval *zv) { zend_class_constant *c = Z_PTR_P(zv); if (!zend_shared_alloc_get_xlat_entry(c)) { if (!ZCG(current_persistent_script)->corrupted && zend_accel_in_shm(Z_PTR_P(zv))) { return; } zend_shared_alloc_register_xlat_entry(c, c); ADD_SIZE(sizeof(zend_class_constant)); zend_persist_zval_calc(&c->value); if (ZCG(accel_directives).save_comments && c->doc_comment) { ADD_STRING(c->doc_comment); } if (c->attributes) { zend_persist_attributes_calc(c->attributes); } } } void zend_persist_class_entry_calc(zend_class_entry *ce) { Bucket *p; if (ce->type == ZEND_USER_CLASS) { /* The same zend_class_entry may be reused by class_alias */ if (zend_shared_alloc_get_xlat_entry(ce)) { return; } zend_shared_alloc_register_xlat_entry(ce, ce); ADD_SIZE(sizeof(zend_class_entry)); if (!(ce->ce_flags & ZEND_ACC_CACHED)) { ADD_INTERNED_STRING(ce->name); if (ce->parent_name && !(ce->ce_flags & ZEND_ACC_LINKED)) { ADD_INTERNED_STRING(ce->parent_name); } } zend_hash_persist_calc(&ce->function_table); ZEND_HASH_FOREACH_BUCKET(&ce->function_table, p) { ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); zend_persist_class_method_calc(&p->val); } ZEND_HASH_FOREACH_END(); if (ce->default_properties_table) { int i; ADD_SIZE(sizeof(zval) * ce->default_properties_count); for (i = 0; i < ce->default_properties_count; i++) { zend_persist_zval_calc(&ce->default_properties_table[i]); } } if (ce->default_static_members_table) { int i; ADD_SIZE(sizeof(zval) * ce->default_static_members_count); for (i = 0; i < ce->default_static_members_count; i++) { if (Z_TYPE(ce->default_static_members_table[i]) != IS_INDIRECT) { zend_persist_zval_calc(&ce->default_static_members_table[i]); } } } zend_hash_persist_calc(&ce->constants_table); ZEND_HASH_FOREACH_BUCKET(&ce->constants_table, p) { ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); zend_persist_class_constant_calc(&p->val); } ZEND_HASH_FOREACH_END(); zend_hash_persist_calc(&ce->properties_info); ZEND_HASH_FOREACH_BUCKET(&ce->properties_info, p) { zend_property_info *prop = Z_PTR(p->val); ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); if (prop->ce == ce) { zend_persist_property_info_calc(prop); } } ZEND_HASH_FOREACH_END(); if (ce->properties_info_table) { ADD_SIZE(sizeof(zend_property_info *) * ce->default_properties_count); } if (ce->num_interfaces && (ce->ce_flags & ZEND_ACC_LINKED)) { ADD_SIZE(sizeof(zend_class_entry*) * ce->num_interfaces); } if (ce->iterator_funcs_ptr) { ADD_SIZE(sizeof(zend_class_iterator_funcs)); } if (ce->ce_flags & ZEND_ACC_CACHED) { return; } if (ce->info.user.filename) { ADD_STRING(ce->info.user.filename); } if (ZCG(accel_directives).save_comments && ce->info.user.doc_comment) { ADD_STRING(ce->info.user.doc_comment); } if (ce->attributes) { zend_persist_attributes_calc(ce->attributes); } if (ce->num_interfaces) { uint32_t i; if (!(ce->ce_flags & ZEND_ACC_LINKED)) { for (i = 0; i < ce->num_interfaces; i++) { ADD_INTERNED_STRING(ce->interface_names[i].name); ADD_INTERNED_STRING(ce->interface_names[i].lc_name); } ADD_SIZE(sizeof(zend_class_name) * ce->num_interfaces); } } if (ce->num_traits) { uint32_t i; for (i = 0; i < ce->num_traits; i++) { ADD_INTERNED_STRING(ce->trait_names[i].name); ADD_INTERNED_STRING(ce->trait_names[i].lc_name); } ADD_SIZE(sizeof(zend_class_name) * ce->num_traits); if (ce->trait_aliases) { i = 0; while (ce->trait_aliases[i]) { if (ce->trait_aliases[i]->trait_method.method_name) { ADD_INTERNED_STRING(ce->trait_aliases[i]->trait_method.method_name); } if (ce->trait_aliases[i]->trait_method.class_name) { ADD_INTERNED_STRING(ce->trait_aliases[i]->trait_method.class_name); } if (ce->trait_aliases[i]->alias) { ADD_INTERNED_STRING(ce->trait_aliases[i]->alias); } ADD_SIZE(sizeof(zend_trait_alias)); i++; } ADD_SIZE(sizeof(zend_trait_alias*) * (i + 1)); } if (ce->trait_precedences) { int j; i = 0; while (ce->trait_precedences[i]) { ADD_INTERNED_STRING(ce->trait_precedences[i]->trait_method.method_name); ADD_INTERNED_STRING(ce->trait_precedences[i]->trait_method.class_name); for (j = 0; j < ce->trait_precedences[i]->num_excludes; j++) { ADD_INTERNED_STRING(ce->trait_precedences[i]->exclude_class_names[j]); } ADD_SIZE(sizeof(zend_trait_precedence) + (ce->trait_precedences[i]->num_excludes - 1) * sizeof(zend_string*)); i++; } ADD_SIZE(sizeof(zend_trait_precedence*) * (i + 1)); } } if (ce->backed_enum_table) { Bucket *p; ADD_SIZE(sizeof(HashTable)); zend_hash_persist_calc(ce->backed_enum_table); ZEND_HASH_FOREACH_BUCKET(ce->backed_enum_table, p) { if (p->key != NULL) { ADD_INTERNED_STRING(p->key); } zend_persist_zval_calc(&p->val); } ZEND_HASH_FOREACH_END(); } } } static void zend_accel_persist_class_table_calc(HashTable *class_table) { Bucket *p; zend_hash_persist_calc(class_table); ZEND_HASH_FOREACH_BUCKET(class_table, p) { ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); zend_persist_class_entry_calc(Z_CE(p->val)); } ZEND_HASH_FOREACH_END(); } void zend_persist_warnings_calc(uint32_t num_warnings, zend_error_info **warnings) { ADD_SIZE(num_warnings * sizeof(zend_error_info *)); for (uint32_t i = 0; i < num_warnings; i++) { ADD_SIZE(sizeof(zend_error_info)); ADD_STRING(warnings[i]->filename); ADD_STRING(warnings[i]->message); } } uint32_t zend_accel_script_persist_calc(zend_persistent_script *new_persistent_script, int for_shm) { Bucket *p; new_persistent_script->mem = NULL; new_persistent_script->size = 0; new_persistent_script->corrupted = 0; ZCG(current_persistent_script) = new_persistent_script; if (!for_shm) { /* script is not going to be saved in SHM */ new_persistent_script->corrupted = 1; } ADD_SIZE(sizeof(zend_persistent_script)); ADD_INTERNED_STRING(new_persistent_script->script.filename); #if defined(__AVX__) || defined(__SSE2__) /* Align size to 64-byte boundary */ new_persistent_script->size = (new_persistent_script->size + 63) & ~63; #endif if (new_persistent_script->script.class_table.nNumUsed != new_persistent_script->script.class_table.nNumOfElements) { zend_hash_rehash(&new_persistent_script->script.class_table); } zend_accel_persist_class_table_calc(&new_persistent_script->script.class_table); if (new_persistent_script->script.function_table.nNumUsed != new_persistent_script->script.function_table.nNumOfElements) { zend_hash_rehash(&new_persistent_script->script.function_table); } zend_hash_persist_calc(&new_persistent_script->script.function_table); ZEND_HASH_FOREACH_BUCKET(&new_persistent_script->script.function_table, p) { ZEND_ASSERT(p->key != NULL); ADD_INTERNED_STRING(p->key); zend_persist_op_array_calc(&p->val); } ZEND_HASH_FOREACH_END(); zend_persist_op_array_calc_ex(&new_persistent_script->script.main_op_array); zend_persist_warnings_calc( new_persistent_script->num_warnings, new_persistent_script->warnings); new_persistent_script->corrupted = 0; ZCG(current_persistent_script) = NULL; return new_persistent_script->size; }
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