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zend_persist.c
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/*
+----------------------------------------------------------------------+
| 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
| Stanislav Malyshev <[email protected]> |
| Dmitry Stogov <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "zend.h"
#include "ZendAccelerator.h"
#include "zend_persist.h"
#include "zend_extensions.h"
#include "zend_shared_alloc.h"
#include "zend_vm.h"
#include "zend_constants.h"
#include "zend_operators.h"
#include "zend_interfaces.h"
#include "zend_attributes.h"
#ifdef HAVE_JIT
# include "Optimizer/zend_func_info.h"
# include "jit/zend_jit.h"
#endif
#define zend_set_str_gc_flags(str) do { \
GC_SET_REFCOUNT(str, 2); \
uint32_t flags = GC_STRING | (ZSTR_IS_VALID_UTF8(str) ? IS_STR_VALID_UTF8 : 0); \
if (file_cache_only \
|| (ZCG(current_persistent_script) && ZCG(current_persistent_script)->corrupted)) { \
GC_TYPE_INFO(str) = GC_STRING | (IS_STR_INTERNED << GC_FLAGS_SHIFT); \
flags |= (IS_STR_INTERNED << GC_FLAGS_SHIFT); \
} else { \
flags |= ((IS_STR_INTERNED | IS_STR_PERMANENT) << GC_FLAGS_SHIFT); \
} \
GC_TYPE_INFO(str) = flags; \
} while (0)
#define zend_accel_store_string(str) do { \
zend_string *new_str = zend_shared_alloc_get_xlat_entry(str); \
if (new_str) { \
zend_string_release_ex(str, 0); \
str = new_str; \
} else { \
new_str = zend_shared_memdup_put((void*)str, _ZSTR_STRUCT_SIZE(ZSTR_LEN(str))); \
zend_string_release_ex(str, 0); \
str = new_str; \
zend_string_hash_val(str); \
zend_set_str_gc_flags(str); \
} \
} while (0)
#define zend_accel_memdup_string(str) do { \
zend_string *new_str = zend_shared_alloc_get_xlat_entry(str); \
if (new_str) { \
str = new_str; \
} else { \
new_str = zend_shared_memdup_put((void*)str, _ZSTR_STRUCT_SIZE(ZSTR_LEN(str))); \
str = new_str; \
zend_string_hash_val(str); \
zend_set_str_gc_flags(str); \
} \
} while (0)
#define zend_accel_store_interned_string(str) do { \
if (!IS_ACCEL_INTERNED(str)) { \
zend_accel_store_string(str); \
} \
} while (0)
#define zend_accel_memdup_interned_string(str) do { \
if (!IS_ACCEL_INTERNED(str)) { \
zend_accel_memdup_string(str); \
} \
} while (0)
typedef void (*zend_persist_func_t)(zval*);
static void zend_persist_zval(zval *z);
static void zend_persist_op_array(zval *zv);
static const uint32_t uninitialized_bucket[-HT_MIN_MASK] =
{HT_INVALID_IDX, HT_INVALID_IDX};
static void zend_hash_persist(HashTable *ht)
{
uint32_t idx, nIndex;
Bucket *p;
HT_FLAGS(ht) |= HASH_FLAG_STATIC_KEYS;
ht->pDestructor = NULL;
ht->nInternalPointer = 0;
if (HT_FLAGS(ht) & HASH_FLAG_UNINITIALIZED) {
if (EXPECTED(!ZCG(current_persistent_script)->corrupted)) {
HT_SET_DATA_ADDR(ht, &ZCSG(uninitialized_bucket));
} else {
HT_SET_DATA_ADDR(ht, &uninitialized_bucket);
}
return;
}
if (ht->nNumUsed == 0) {
efree(HT_GET_DATA_ADDR(ht));
ht->nTableMask = HT_MIN_MASK;
if (EXPECTED(!ZCG(current_persistent_script)->corrupted)) {
HT_SET_DATA_ADDR(ht, &ZCSG(uninitialized_bucket));
} else {
HT_SET_DATA_ADDR(ht, &uninitialized_bucket);
}
HT_FLAGS(ht) |= HASH_FLAG_UNINITIALIZED;
return;
}
if (HT_IS_PACKED(ht)) {
void *data = HT_GET_DATA_ADDR(ht);
if (GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) {
data = zend_shared_memdup(data, HT_PACKED_USED_SIZE(ht));
} else {
data = zend_shared_memdup_free(data, HT_PACKED_USED_SIZE(ht));
}
HT_SET_DATA_ADDR(ht, data);
} else if (ht->nNumUsed > HT_MIN_SIZE && ht->nNumUsed < (uint32_t)(-(int32_t)ht->nTableMask) / 4) {
/* compact table */
void *old_data = HT_GET_DATA_ADDR(ht);
Bucket *old_buckets = ht->arData;
uint32_t hash_size;
hash_size = (uint32_t)(-(int32_t)ht->nTableMask);
while (hash_size >> 2 > ht->nNumUsed) {
hash_size >>= 1;
}
ht->nTableMask = (uint32_t)(-(int32_t)hash_size);
ZEND_ASSERT(((uintptr_t)ZCG(mem) & 0x7) == 0); /* should be 8 byte aligned */
HT_SET_DATA_ADDR(ht, ZCG(mem));
ZCG(mem) = (void*)((char*)ZCG(mem) + ZEND_ALIGNED_SIZE((hash_size * sizeof(uint32_t)) + (ht->nNumUsed * sizeof(Bucket))));
HT_HASH_RESET(ht);
memcpy(ht->arData, old_buckets, ht->nNumUsed * sizeof(Bucket));
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
efree(old_data);
}
/* rehash */
for (idx = 0; idx < ht->nNumUsed; idx++) {
p = ht->arData + idx;
if (Z_TYPE(p->val) == IS_UNDEF) continue;
nIndex = p->h | ht->nTableMask;
Z_NEXT(p->val) = HT_HASH(ht, nIndex);
HT_HASH(ht, nIndex) = HT_IDX_TO_HASH(idx);
}
} else {
void *data = ZCG(mem);
void *old_data = HT_GET_DATA_ADDR(ht);
ZEND_ASSERT(((uintptr_t)ZCG(mem) & 0x7) == 0); /* should be 8 byte aligned */
ZCG(mem) = (void*)((char*)data + ZEND_ALIGNED_SIZE(HT_USED_SIZE(ht)));
memcpy(data, old_data, HT_USED_SIZE(ht));
if (!(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE)) {
efree(old_data);
}
HT_SET_DATA_ADDR(ht, data);
}
}
static zend_ast *zend_persist_ast(zend_ast *ast)
{
uint32_t i;
zend_ast *node;
if (ast->kind == ZEND_AST_ZVAL || ast->kind == ZEND_AST_CONSTANT) {
zend_ast_zval *copy = zend_shared_memdup(ast, sizeof(zend_ast_zval));
zend_persist_zval(©->val);
node = (zend_ast *) copy;
} else if (zend_ast_is_list(ast)) {
zend_ast_list *list = zend_ast_get_list(ast);
zend_ast_list *copy = zend_shared_memdup(ast,
sizeof(zend_ast_list) - sizeof(zend_ast *) + sizeof(zend_ast *) * list->children);
for (i = 0; i < list->children; i++) {
if (copy->child[i]) {
copy->child[i] = zend_persist_ast(copy->child[i]);
}
}
node = (zend_ast *) copy;
} else if (ast->kind == ZEND_AST_OP_ARRAY) {
zend_ast_op_array *copy = zend_shared_memdup(ast, sizeof(zend_ast_op_array));
zval z;
ZVAL_PTR(&z, copy->op_array);
zend_persist_op_array(&z);
copy->op_array = Z_PTR(z);
node = (zend_ast *) copy;
} else if (ast->kind == ZEND_AST_CALLABLE_CONVERT) {
zend_ast_fcc *copy = zend_shared_memdup(ast, sizeof(zend_ast_fcc));
node = (zend_ast *) copy;
} else if (zend_ast_is_decl(ast)) {
/* Not implemented. */
ZEND_UNREACHABLE();
} else {
uint32_t children = zend_ast_get_num_children(ast);
node = zend_shared_memdup(ast, zend_ast_size(children));
for (i = 0; i < children; i++) {
if (node->child[i]) {
node->child[i] = zend_persist_ast(node->child[i]);
}
}
}
return node;
}
static void zend_persist_zval(zval *z)
{
void *new_ptr;
switch (Z_TYPE_P(z)) {
case IS_STRING:
zend_accel_store_interned_string(Z_STR_P(z));
Z_TYPE_FLAGS_P(z) = 0;
break;
case IS_ARRAY:
new_ptr = zend_shared_alloc_get_xlat_entry(Z_ARR_P(z));
if (new_ptr) {
Z_ARR_P(z) = new_ptr;
Z_TYPE_FLAGS_P(z) = 0;
} else if (!ZCG(current_persistent_script)->corrupted
&& zend_accel_in_shm(Z_ARR_P(z))) {
/* pass */
} else {
HashTable *ht;
if (!Z_REFCOUNTED_P(z)) {
ht = zend_shared_memdup_put(Z_ARR_P(z), sizeof(zend_array));
} else {
GC_REMOVE_FROM_BUFFER(Z_ARR_P(z));
ht = zend_shared_memdup_put_free(Z_ARR_P(z), sizeof(zend_array));
}
Z_ARR_P(z) = ht;
zend_hash_persist(ht);
if (HT_IS_PACKED(ht)) {
zval *zv;
ZEND_HASH_PACKED_FOREACH_VAL(ht, zv) {
zend_persist_zval(zv);
} ZEND_HASH_FOREACH_END();
} else {
Bucket *p;
ZEND_HASH_MAP_FOREACH_BUCKET(ht, p) {
if (p->key) {
zend_accel_store_interned_string(p->key);
}
zend_persist_zval(&p->val);
} ZEND_HASH_FOREACH_END();
}
/* make immutable array */
Z_TYPE_FLAGS_P(z) = 0;
GC_SET_REFCOUNT(Z_COUNTED_P(z), 2);
GC_ADD_FLAGS(Z_COUNTED_P(z), IS_ARRAY_IMMUTABLE);
}
break;
case IS_CONSTANT_AST:
new_ptr = zend_shared_alloc_get_xlat_entry(Z_AST_P(z));
if (new_ptr) {
Z_AST_P(z) = new_ptr;
Z_TYPE_FLAGS_P(z) = 0;
} else if (ZCG(current_persistent_script)->corrupted
|| !zend_accel_in_shm(Z_AST_P(z))) {
zend_ast_ref *old_ref = Z_AST_P(z);
Z_AST_P(z) = zend_shared_memdup_put(Z_AST_P(z), sizeof(zend_ast_ref));
zend_persist_ast(GC_AST(old_ref));
Z_TYPE_FLAGS_P(z) = 0;
GC_SET_REFCOUNT(Z_COUNTED_P(z), 1);
GC_ADD_FLAGS(Z_COUNTED_P(z), GC_IMMUTABLE);
efree(old_ref);
}
break;
default:
ZEND_ASSERT(Z_TYPE_P(z) < IS_STRING);
break;
}
}
static HashTable *zend_persist_attributes(HashTable *attributes)
{
uint32_t i;
zval *v;
if (!ZCG(current_persistent_script)->corrupted && zend_accel_in_shm(attributes)) {
return attributes;
}
/* Attributes for trait properties may be shared if preloading is used. */
HashTable *xlat = zend_shared_alloc_get_xlat_entry(attributes);
if (xlat) {
return xlat;
}
zend_hash_persist(attributes);
ZEND_HASH_PACKED_FOREACH_VAL(attributes, v) {
zend_attribute *attr = Z_PTR_P(v);
zend_attribute *copy = zend_shared_memdup_put_free(attr, ZEND_ATTRIBUTE_SIZE(attr->argc));
zend_accel_store_interned_string(copy->name);
zend_accel_store_interned_string(copy->lcname);
for (i = 0; i < copy->argc; i++) {
if (copy->args[i].name) {
zend_accel_store_interned_string(copy->args[i].name);
}
zend_persist_zval(©->args[i].value);
}
ZVAL_PTR(v, copy);
} ZEND_HASH_FOREACH_END();
HashTable *ptr = zend_shared_memdup_put_free(attributes, sizeof(HashTable));
GC_SET_REFCOUNT(ptr, 2);
GC_TYPE_INFO(ptr) = GC_ARRAY | ((IS_ARRAY_IMMUTABLE|GC_NOT_COLLECTABLE) << GC_FLAGS_SHIFT);
return ptr;
}
uint32_t zend_accel_get_class_name_map_ptr(zend_string *type_name)
{
uint32_t ret;
if (zend_string_equals_ci(type_name, ZSTR_KNOWN(ZEND_STR_SELF)) ||
zend_string_equals_ci(type_name, ZSTR_KNOWN(ZEND_STR_PARENT))) {
return 0;
}
/* We use type.name.gc.refcount to keep map_ptr of corresponding type */
if (ZSTR_HAS_CE_CACHE(type_name)) {
return GC_REFCOUNT(type_name);
}
if ((GC_FLAGS(type_name) & GC_IMMUTABLE)
&& (GC_FLAGS(type_name) & IS_STR_PERMANENT)) {
do {
ret = ZEND_MAP_PTR_NEW_OFFSET();
} while (ret <= 2);
GC_SET_REFCOUNT(type_name, ret);
GC_ADD_FLAGS(type_name, IS_STR_CLASS_NAME_MAP_PTR);
return ret;
}
return 0;
}
static void zend_persist_type(zend_type *type) {
if (ZEND_TYPE_HAS_LIST(*type)) {
zend_type_list *list = ZEND_TYPE_LIST(*type);
if (ZEND_TYPE_USES_ARENA(*type) || zend_accel_in_shm(list)) {
list = zend_shared_memdup_put(list, ZEND_TYPE_LIST_SIZE(list->num_types));
ZEND_TYPE_FULL_MASK(*type) &= ~_ZEND_TYPE_ARENA_BIT;
} else {
list = zend_shared_memdup_put_free(list, ZEND_TYPE_LIST_SIZE(list->num_types));
}
ZEND_TYPE_SET_PTR(*type, list);
}
zend_type *single_type;
ZEND_TYPE_FOREACH_MUTABLE(*type, single_type) {
if (ZEND_TYPE_HAS_LIST(*single_type)) {
zend_persist_type(single_type);
continue;
}
if (ZEND_TYPE_HAS_NAME(*single_type)) {
zend_string *type_name = ZEND_TYPE_NAME(*single_type);
zend_accel_store_interned_string(type_name);
ZEND_TYPE_SET_PTR(*single_type, type_name);
if (!ZCG(current_persistent_script)->corrupted) {
zend_accel_get_class_name_map_ptr(type_name);
}
}
} ZEND_TYPE_FOREACH_END();
}
static void zend_persist_op_array_ex(zend_op_array *op_array, zend_persistent_script* main_persistent_script)
{
zend_op *persist_ptr;
zval *orig_literals = NULL;
if (op_array->refcount && --(*op_array->refcount) == 0) {
efree(op_array->refcount);
}
op_array->refcount = NULL;
if (main_persistent_script) {
zend_execute_data *orig_execute_data = EG(current_execute_data);
zend_execute_data fake_execute_data;
zval *offset;
memset(&fake_execute_data, 0, sizeof(fake_execute_data));
fake_execute_data.func = (zend_function*)op_array;
EG(current_execute_data) = &fake_execute_data;
if ((offset = zend_get_constant_str("__COMPILER_HALT_OFFSET__", sizeof("__COMPILER_HALT_OFFSET__") - 1)) != NULL) {
main_persistent_script->compiler_halt_offset = Z_LVAL_P(offset);
}
EG(current_execute_data) = orig_execute_data;
}
if (op_array->function_name) {
zend_string *old_name = op_array->function_name;
zend_accel_store_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) {
zend_class_entry *scope = zend_shared_alloc_get_xlat_entry(op_array->scope);
if (scope) {
op_array->scope = scope;
}
if (op_array->prototype) {
zend_function *ptr = zend_shared_alloc_get_xlat_entry(op_array->prototype);
if (ptr) {
op_array->prototype = ptr;
}
}
persist_ptr = zend_shared_alloc_get_xlat_entry(op_array->opcodes);
if (persist_ptr) {
op_array->opcodes = persist_ptr;
if (op_array->static_variables) {
op_array->static_variables = zend_shared_alloc_get_xlat_entry(op_array->static_variables);
ZEND_ASSERT(op_array->static_variables != NULL);
}
if (op_array->literals) {
op_array->literals = zend_shared_alloc_get_xlat_entry(op_array->literals);
ZEND_ASSERT(op_array->literals != NULL);
}
if (op_array->filename) {
op_array->filename = zend_shared_alloc_get_xlat_entry(op_array->filename);
ZEND_ASSERT(op_array->filename != NULL);
}
if (op_array->arg_info) {
zend_arg_info *arg_info = op_array->arg_info;
if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
arg_info--;
}
arg_info = zend_shared_alloc_get_xlat_entry(arg_info);
ZEND_ASSERT(arg_info != NULL);
if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
arg_info++;
}
op_array->arg_info = arg_info;
}
if (op_array->live_range) {
op_array->live_range = zend_shared_alloc_get_xlat_entry(op_array->live_range);
ZEND_ASSERT(op_array->live_range != NULL);
}
if (op_array->doc_comment) {
if (ZCG(accel_directives).save_comments) {
op_array->doc_comment = zend_shared_alloc_get_xlat_entry(op_array->doc_comment);
ZEND_ASSERT(op_array->doc_comment != NULL);
} else {
op_array->doc_comment = NULL;
}
}
if (op_array->attributes) {
op_array->attributes = zend_shared_alloc_get_xlat_entry(op_array->attributes);
ZEND_ASSERT(op_array->attributes != NULL);
}
if (op_array->try_catch_array) {
op_array->try_catch_array = zend_shared_alloc_get_xlat_entry(op_array->try_catch_array);
ZEND_ASSERT(op_array->try_catch_array != NULL);
}
if (op_array->vars) {
op_array->vars = zend_shared_alloc_get_xlat_entry(op_array->vars);
ZEND_ASSERT(op_array->vars != NULL);
}
if (op_array->dynamic_func_defs) {
op_array->dynamic_func_defs = zend_shared_alloc_get_xlat_entry(op_array->dynamic_func_defs);
ZEND_ASSERT(op_array->dynamic_func_defs != NULL);
}
ZCG(mem) = (void*)((char*)ZCG(mem) + ZEND_ALIGNED_SIZE(zend_extensions_op_array_persist(op_array, ZCG(mem))));
return;
}
} else {
/* "prototype" may be undefined if "scope" isn't set */
op_array->prototype = NULL;
}
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)) {
Bucket *p;
zend_hash_persist(op_array->static_variables);
ZEND_HASH_MAP_FOREACH_BUCKET(op_array->static_variables, p) {
ZEND_ASSERT(p->key != NULL);
zend_accel_store_interned_string(p->key);
zend_persist_zval(&p->val);
} ZEND_HASH_FOREACH_END();
op_array->static_variables = zend_shared_memdup_put_free(op_array->static_variables, sizeof(HashTable));
/* make immutable array */
GC_SET_REFCOUNT(op_array->static_variables, 2);
GC_TYPE_INFO(op_array->static_variables) = GC_ARRAY | ((IS_ARRAY_IMMUTABLE|GC_NOT_COLLECTABLE) << GC_FLAGS_SHIFT);
}
if (op_array->literals) {
zval *p, *end;
orig_literals = op_array->literals;
#if ZEND_USE_ABS_CONST_ADDR
p = zend_shared_memdup_put_free(op_array->literals, sizeof(zval) * op_array->last_literal);
#else
p = zend_shared_memdup_put(op_array->literals, sizeof(zval) * op_array->last_literal);
#endif
end = p + op_array->last_literal;
op_array->literals = p;
while (p < end) {
zend_persist_zval(p);
p++;
}
}
{
zend_op *new_opcodes = zend_shared_memdup_put(op_array->opcodes, sizeof(zend_op) * op_array->last);
zend_op *opline = new_opcodes;
zend_op *end = new_opcodes + op_array->last;
int offset = 0;
for (; opline < end ; opline++, offset++) {
#if ZEND_USE_ABS_CONST_ADDR
if (opline->op1_type == IS_CONST) {
opline->op1.zv = (zval*)((char*)opline->op1.zv + ((char*)op_array->literals - (char*)orig_literals));
if (opline->opcode == ZEND_SEND_VAL
|| opline->opcode == ZEND_SEND_VAL_EX
|| opline->opcode == ZEND_QM_ASSIGN) {
/* Update handlers to eliminate REFCOUNTED check */
zend_vm_set_opcode_handler_ex(opline, 1 << Z_TYPE_P(opline->op1.zv), 0, 0);
}
}
if (opline->op2_type == IS_CONST) {
opline->op2.zv = (zval*)((char*)opline->op2.zv + ((char*)op_array->literals - (char*)orig_literals));
}
#else
if (opline->op1_type == IS_CONST) {
opline->op1.constant =
(char*)(op_array->literals +
((zval*)((char*)(op_array->opcodes + (opline - new_opcodes)) +
(int32_t)opline->op1.constant) - orig_literals)) -
(char*)opline;
if (opline->opcode == ZEND_SEND_VAL
|| opline->opcode == ZEND_SEND_VAL_EX
|| opline->opcode == ZEND_QM_ASSIGN) {
zend_vm_set_opcode_handler_ex(opline, 0, 0, 0);
}
}
if (opline->op2_type == IS_CONST) {
opline->op2.constant =
(char*)(op_array->literals +
((zval*)((char*)(op_array->opcodes + (opline - new_opcodes)) +
(int32_t)opline->op2.constant) - orig_literals)) -
(char*)opline;
}
#endif
#if ZEND_USE_ABS_JMP_ADDR
if (op_array->fn_flags & ZEND_ACC_DONE_PASS_TWO) {
/* fix jumps to point to new array */
switch (opline->opcode) {
case ZEND_JMP:
case ZEND_FAST_CALL:
opline->op1.jmp_addr = &new_opcodes[opline->op1.jmp_addr - op_array->opcodes];
break;
case ZEND_JMPZ:
case ZEND_JMPNZ:
case ZEND_JMPZ_EX:
case ZEND_JMPNZ_EX:
case ZEND_JMP_SET:
case ZEND_COALESCE:
case ZEND_FE_RESET_R:
case ZEND_FE_RESET_RW:
case ZEND_ASSERT_CHECK:
case ZEND_JMP_NULL:
case ZEND_BIND_INIT_STATIC_OR_JMP:
case ZEND_JMP_FRAMELESS:
opline->op2.jmp_addr = &new_opcodes[opline->op2.jmp_addr - op_array->opcodes];
break;
case ZEND_CATCH:
if (!(opline->extended_value & ZEND_LAST_CATCH)) {
opline->op2.jmp_addr = &new_opcodes[opline->op2.jmp_addr - op_array->opcodes];
}
break;
case ZEND_FE_FETCH_R:
case ZEND_FE_FETCH_RW:
case ZEND_SWITCH_LONG:
case ZEND_SWITCH_STRING:
case ZEND_MATCH:
/* relative extended_value don't have to be changed */
break;
}
}
#endif
}
efree(op_array->opcodes);
op_array->opcodes = new_opcodes;
}
if (op_array->filename) {
zend_accel_store_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_HAS_RETURN_TYPE) {
arg_info--;
num_args++;
}
if (op_array->fn_flags & ZEND_ACC_VARIADIC) {
num_args++;
}
arg_info = zend_shared_memdup_put_free(arg_info, sizeof(zend_arg_info) * num_args);
for (i = 0; i < num_args; i++) {
if (arg_info[i].name) {
zend_accel_store_interned_string(arg_info[i].name);
}
zend_persist_type(&arg_info[i].type);
}
if (op_array->fn_flags & ZEND_ACC_HAS_RETURN_TYPE) {
arg_info++;
}
op_array->arg_info = arg_info;
}
if (op_array->live_range) {
op_array->live_range = zend_shared_memdup_put_free(op_array->live_range, sizeof(zend_live_range) * op_array->last_live_range);
}
if (op_array->doc_comment) {
if (ZCG(accel_directives).save_comments) {
zend_accel_store_interned_string(op_array->doc_comment);
} else {
zend_string_release_ex(op_array->doc_comment, 0);
op_array->doc_comment = NULL;
}
}
if (op_array->attributes) {
op_array->attributes = zend_persist_attributes(op_array->attributes);
}
if (op_array->try_catch_array) {
op_array->try_catch_array = zend_shared_memdup_put_free(op_array->try_catch_array, sizeof(zend_try_catch_element) * op_array->last_try_catch);
}
if (op_array->vars) {
int i;
op_array->vars = zend_shared_memdup_put_free(op_array->vars, sizeof(zend_string*) * op_array->last_var);
for (i = 0; i < op_array->last_var; i++) {
zend_accel_store_interned_string(op_array->vars[i]);
}
}
if (op_array->num_dynamic_func_defs) {
op_array->dynamic_func_defs = zend_shared_memdup_put_free(
op_array->dynamic_func_defs, sizeof(zend_function *) * 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(&tmp);
op_array->dynamic_func_defs[i] = Z_PTR(tmp);
}
}
ZCG(mem) = (void*)((char*)ZCG(mem) + ZEND_ALIGNED_SIZE(zend_extensions_op_array_persist(op_array, ZCG(mem))));
}
static void zend_persist_op_array(zval *zv)
{
zend_op_array *op_array = Z_PTR_P(zv);
zend_op_array *old_op_array;
ZEND_ASSERT(op_array->type == ZEND_USER_FUNCTION);
old_op_array = zend_shared_alloc_get_xlat_entry(op_array);
if (!old_op_array) {
op_array = Z_PTR_P(zv) = zend_shared_memdup_put(Z_PTR_P(zv), sizeof(zend_op_array));
zend_persist_op_array_ex(op_array, NULL);
if (!ZCG(current_persistent_script)->corrupted) {
op_array->fn_flags |= ZEND_ACC_IMMUTABLE;
ZEND_MAP_PTR_NEW(op_array->run_time_cache);
if (op_array->static_variables) {
ZEND_MAP_PTR_NEW(op_array->static_variables_ptr);
}
}
#ifdef HAVE_JIT
if (JIT_G(on)
&& JIT_G(opt_level) <= ZEND_JIT_LEVEL_OPT_FUNCS
&& (!ZCG(current_persistent_script)
|| !ZCG(current_persistent_script)->corrupted)) {
zend_jit_op_array(op_array, ZCG(current_persistent_script) ? &ZCG(current_persistent_script)->script : NULL);
}
#endif
} else {
/* This can happen during preloading, if a dynamic function definition is declared. */
Z_PTR_P(zv) = old_op_array;
}
}
static zend_op_array *zend_persist_class_method(zend_op_array *op_array, zend_class_entry *ce)
{
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) {
return old_op_array;
} else {
op_array = zend_shared_memdup_put(op_array, sizeof(zend_internal_function));
if (op_array->scope) {
void *persist_ptr;
if ((persist_ptr = zend_shared_alloc_get_xlat_entry(op_array->scope))) {
op_array->scope = (zend_class_entry*)persist_ptr;
}
if (op_array->prototype) {
if ((persist_ptr = zend_shared_alloc_get_xlat_entry(op_array->prototype))) {
op_array->prototype = (zend_function*)persist_ptr;
}
}
}
// Real dynamically created internal functions like enum methods must have their own run_time_cache pointer. They're always on the same scope as their defining class.
// However, copies - as caused by inheritance of internal methods - must retain the original run_time_cache pointer, shared with the source function.
if (!op_array->scope || (op_array->scope == ce && !(op_array->fn_flags & ZEND_ACC_TRAIT_CLONE))) {
if (op_array->fn_flags & ZEND_ACC_PRELOADED) {
ZEND_MAP_PTR_NEW_STATIC(op_array->run_time_cache);
} else {
ZEND_MAP_PTR_NEW(op_array->run_time_cache);
}
}
}
}
return op_array;
}
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 op_array;
}
old_op_array = zend_shared_alloc_get_xlat_entry(op_array);
if (old_op_array) {
if (op_array->refcount && --(*op_array->refcount) == 0) {
efree(op_array->refcount);
}
/* 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);
}
return old_op_array;
}
op_array = zend_shared_memdup_put(op_array, sizeof(zend_op_array));
zend_persist_op_array_ex(op_array, NULL);
if (ce->ce_flags & ZEND_ACC_IMMUTABLE) {
op_array->fn_flags |= ZEND_ACC_IMMUTABLE;
if (ce->ce_flags & ZEND_ACC_LINKED) {
ZEND_MAP_PTR_NEW(op_array->run_time_cache);
if (op_array->static_variables) {
ZEND_MAP_PTR_NEW(op_array->static_variables_ptr);
}
} else {
ZEND_MAP_PTR_INIT(op_array->run_time_cache, NULL);
ZEND_MAP_PTR_INIT(op_array->static_variables_ptr, NULL);
}
}
return op_array;
}
static zend_property_info *zend_persist_property_info(zend_property_info *prop)
{
zend_class_entry *ce;
prop = zend_shared_memdup_put(prop, sizeof(zend_property_info));
ce = zend_shared_alloc_get_xlat_entry(prop->ce);
if (ce) {
prop->ce = ce;
}
zend_accel_store_interned_string(prop->name);
if (prop->doc_comment) {
if (ZCG(accel_directives).save_comments) {
zend_accel_store_interned_string(prop->doc_comment);
} else {
if (!zend_shared_alloc_get_xlat_entry(prop->doc_comment)) {
zend_shared_alloc_register_xlat_entry(prop->doc_comment, prop->doc_comment);
}
zend_string_release_ex(prop->doc_comment, 0);
prop->doc_comment = NULL;
}
}
if (prop->attributes) {
prop->attributes = zend_persist_attributes(prop->attributes);
}
if (prop->prototype) {
zend_property_info *new_prototype = (zend_property_info *) zend_shared_alloc_get_xlat_entry(prop->prototype);
if (new_prototype) {
prop->prototype = new_prototype;
}
}
if (prop->hooks) {
prop->hooks = zend_shared_memdup_put(prop->hooks, ZEND_PROPERTY_HOOK_STRUCT_SIZE);
for (uint32_t i = 0; i < ZEND_PROPERTY_HOOK_COUNT; i++) {
if (prop->hooks[i]) {
zend_op_array *hook = zend_persist_class_method(&prop->hooks[i]->op_array, ce);
#ifdef HAVE_JIT
if (JIT_G(on)
&& JIT_G(opt_level) <= ZEND_JIT_LEVEL_OPT_FUNCS
&& (!ZCG(current_persistent_script)
|| !ZCG(current_persistent_script)->corrupted)) {
if (hook->scope == ce && !(hook->fn_flags & ZEND_ACC_TRAIT_CLONE)) {
zend_jit_op_array(hook, ZCG(current_persistent_script) ? &ZCG(current_persistent_script)->script : NULL);
}
}
#endif
zend_property_info *new_prop_info = (zend_property_info *) zend_shared_alloc_get_xlat_entry(hook->prop_info);
if (new_prop_info) {
hook->prop_info = new_prop_info;
}
prop->hooks[i] = (zend_function *) hook;
}
}
}
zend_persist_type(&prop->type);
return prop;
}
static void zend_persist_class_constant(zval *zv)
{
zend_class_constant *orig_c = Z_PTR_P(zv);
zend_class_constant *c = zend_shared_alloc_get_xlat_entry(orig_c);
zend_class_entry *ce;
if (c) {
Z_PTR_P(zv) = c;
return;
} else if (((orig_c->ce->ce_flags & ZEND_ACC_IMMUTABLE) && !(Z_CONSTANT_FLAGS(orig_c->value) & CONST_OWNED))
|| orig_c->ce->type == ZEND_INTERNAL_CLASS) {
/* Class constant comes from a different file in shm or internal class, keep existing pointer. */
return;
} else if (!ZCG(current_persistent_script)->corrupted
&& zend_accel_in_shm(Z_PTR_P(zv))) {
return;
}
c = Z_PTR_P(zv) = zend_shared_memdup_put(Z_PTR_P(zv), sizeof(zend_class_constant));
zend_persist_zval(&c->value);
ce = zend_shared_alloc_get_xlat_entry(c->ce);
if (ce) {
c->ce = ce;
}
if (c->doc_comment) {
if (ZCG(accel_directives).save_comments) {
zend_string *doc_comment = zend_shared_alloc_get_xlat_entry(c->doc_comment);
if (doc_comment) {
c->doc_comment = doc_comment;
} else {
zend_accel_store_interned_string(c->doc_comment);
}
} else {
zend_string *doc_comment = zend_shared_alloc_get_xlat_entry(c->doc_comment);
if (!doc_comment) {
zend_shared_alloc_register_xlat_entry(c->doc_comment, c->doc_comment);
zend_string_release_ex(c->doc_comment, 0);
}
c->doc_comment = NULL;
}
}
if (c->attributes) {
c->attributes = zend_persist_attributes(c->attributes);
}
zend_persist_type(&c->type);
}
zend_class_entry *zend_persist_class_entry(zend_class_entry *orig_ce)
{
Bucket *p;
zend_class_entry *ce = orig_ce;
if (ce->type == ZEND_USER_CLASS) {
/* The same zend_class_entry may be reused by class_alias */
zend_class_entry *new_ce = zend_shared_alloc_get_xlat_entry(ce);
if (new_ce) {
return new_ce;
}
ce = zend_shared_memdup_put(ce, sizeof(zend_class_entry));
if (EXPECTED(!ZCG(current_persistent_script)->corrupted)) {
ce->ce_flags |= ZEND_ACC_IMMUTABLE;
if ((ce->ce_flags & ZEND_ACC_LINKED)
&& !(ce->ce_flags & ZEND_ACC_CONSTANTS_UPDATED)) {
ZEND_MAP_PTR_NEW(ce->mutable_data);
} else {
ZEND_MAP_PTR_INIT(ce->mutable_data, NULL);
}
} else {
ce->ce_flags |= ZEND_ACC_FILE_CACHED;
}
ce->inheritance_cache = NULL;
if (!(ce->ce_flags & ZEND_ACC_CACHED)) {
if (ZSTR_HAS_CE_CACHE(ce->name)) {
ZSTR_SET_CE_CACHE_EX(ce->name, NULL, 0);
}
zend_accel_store_interned_string(ce->name);
if (!(ce->ce_flags & ZEND_ACC_ANON_CLASS)
&& !ZCG(current_persistent_script)->corrupted) {
zend_accel_get_class_name_map_ptr(ce->name);
}
if (ce->parent_name && !(ce->ce_flags & ZEND_ACC_LINKED)) {
zend_accel_store_interned_string(ce->parent_name);
}
}
zend_hash_persist(&ce->function_table);
ZEND_HASH_MAP_FOREACH_BUCKET(&ce->function_table, p) {
ZEND_ASSERT(p->key != NULL);
zend_accel_store_interned_string(p->key);
Z_PTR(p->val) = zend_persist_class_method(Z_PTR(p->val), ce);
} ZEND_HASH_FOREACH_END();
HT_FLAGS(&ce->function_table) &= (HASH_FLAG_UNINITIALIZED | HASH_FLAG_STATIC_KEYS);
if (ce->default_properties_table) {
int i;
ce->default_properties_table = zend_shared_memdup_free(ce->default_properties_table, sizeof(zval) * ce->default_properties_count);
for (i = 0; i < ce->default_properties_count; i++) {
zend_persist_zval(&ce->default_properties_table[i]);
}
}
if (ce->default_static_members_table) {
int i;
ce->default_static_members_table = zend_shared_memdup_free(ce->default_static_members_table, sizeof(zval) * ce->default_static_members_count);
/* Persist only static properties in this class.
* Static properties from parent classes will be handled in class_copy_ctor and are marked with IS_INDIRECT */
for (i = 0; i < ce->default_static_members_count; i++) {
if (Z_TYPE(ce->default_static_members_table[i]) != IS_INDIRECT) {
zend_persist_zval(&ce->default_static_members_table[i]);
}
}
if (ce->ce_flags & ZEND_ACC_IMMUTABLE) {
if (ce->ce_flags & ZEND_ACC_LINKED) {
ZEND_MAP_PTR_NEW(ce->static_members_table);
} else {
ZEND_MAP_PTR_INIT(ce->static_members_table, NULL);
}
}
}
zend_hash_persist(&ce->constants_table);
ZEND_HASH_MAP_FOREACH_BUCKET(&ce->constants_table, p) {
ZEND_ASSERT(p->key != NULL);
zend_accel_store_interned_string(p->key);
zend_persist_class_constant(&p->val);
} ZEND_HASH_FOREACH_END();
HT_FLAGS(&ce->constants_table) &= (HASH_FLAG_UNINITIALIZED | HASH_FLAG_STATIC_KEYS);
zend_hash_persist(&ce->properties_info);
ZEND_HASH_MAP_FOREACH_BUCKET(&ce->properties_info, p) {
zend_property_info *prop = Z_PTR(p->val);
ZEND_ASSERT(p->key != NULL);
zend_accel_store_interned_string(p->key);
if (prop->ce == orig_ce) {
Z_PTR(p->val) = zend_persist_property_info(prop);
} else {
prop = zend_shared_alloc_get_xlat_entry(prop);
if (prop) {
Z_PTR(p->val) = prop;
} else {
/* This can happen if preloading is used and we inherit a property from an
* internal class. In that case we should keep pointing to the internal
* property, without any adjustments. */