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php-src/Zend/zend_execute_API.c
Andi Gutmans 7e5ec2d761 Initial support for built-in backtracing. 
There are still a few problems such as includes and calling other functions
from internal functions which aren't seen (will have to think if and how to
fix this).
Also the main scripts filename isn't available. Need to think about that.
2002-05-02 17:20:48 +00:00

914 lines
24 KiB
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2002 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
#include <stdio.h>
#include <signal.h>
#include "zend.h"
#include "zend_compile.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_ptr_stack.h"
#include "zend_constants.h"
#include "zend_extensions.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
ZEND_API void (*zend_execute)(zend_op_array *op_array TSRMLS_DC);
#ifdef ZEND_WIN32
#include <process.h>
/* true global */
static WNDCLASS wc;
static HWND timeout_window;
static HANDLE timeout_thread_event;
static DWORD timeout_thread_id;
static int timeout_thread_initialized=0;
#endif
#if ZEND_DEBUG
static void (*original_sigsegv_handler)(int);
static void zend_handle_sigsegv(int dummy)
{
fflush(stdout);
fflush(stderr);
if (original_sigsegv_handler==zend_handle_sigsegv) {
signal(SIGSEGV, original_sigsegv_handler);
} else {
signal(SIGSEGV, SIG_DFL);
}
{
TSRMLS_FETCH();
fprintf(stderr, "SIGSEGV caught on opcode %d on opline %d of %s() at %s:%d\n\n",
active_opline->opcode,
active_opline-EG(active_op_array)->opcodes,
get_active_function_name(TSRMLS_C),
zend_get_executed_filename(TSRMLS_C),
zend_get_executed_lineno(TSRMLS_C));
}
if (original_sigsegv_handler!=zend_handle_sigsegv) {
original_sigsegv_handler(dummy);
}
}
#endif
static void zend_extension_activator(zend_extension *extension TSRMLS_DC)
{
if (extension->activate) {
extension->activate();
}
}
static void zend_extension_deactivator(zend_extension *extension TSRMLS_DC)
{
if (extension->deactivate) {
extension->deactivate();
}
}
static int is_not_internal_function(zend_function *function TSRMLS_DC)
{
if (function->type == ZEND_INTERNAL_FUNCTION) {
return EG(full_tables_cleanup) ? 0 : ZEND_HASH_APPLY_STOP;
} else {
return EG(full_tables_cleanup) ? 1 : ZEND_HASH_APPLY_REMOVE;
}
}
static int is_not_internal_class(zend_class_entry **ce TSRMLS_DC)
{
if ((*ce)->type == ZEND_INTERNAL_CLASS) {
return EG(full_tables_cleanup) ? 0 : ZEND_HASH_APPLY_STOP;
} else {
return EG(full_tables_cleanup) ? 1 : ZEND_HASH_APPLY_REMOVE;
}
}
void init_executor(TSRMLS_D)
{
INIT_ZVAL(EG(uninitialized_zval));
INIT_ZVAL(EG(error_zval));
EG(uninitialized_zval_ptr)=&EG(uninitialized_zval);
EG(error_zval_ptr)=&EG(error_zval);
zend_ptr_stack_init(&EG(arg_types_stack));
/* destroys stack frame, therefore makes core dumps worthless */
#if 0&&ZEND_DEBUG
original_sigsegv_handler = signal(SIGSEGV, zend_handle_sigsegv);
#endif
EG(return_value_ptr_ptr) = NULL;
EG(symtable_cache_ptr) = EG(symtable_cache)-1;
EG(symtable_cache_limit)=EG(symtable_cache)+SYMTABLE_CACHE_SIZE-1;
EG(no_extensions)=0;
EG(function_table) = CG(function_table);
EG(class_table) = CG(class_table);
EG(in_execution) = 0;
zend_ptr_stack_init(&EG(argument_stack));
zend_hash_init(&EG(symbol_table), 50, NULL, ZVAL_PTR_DTOR, 0);
{
zval *globals;
ALLOC_ZVAL(globals);
globals->refcount=1;
globals->is_ref=1;
globals->type = IS_ARRAY;
globals->value.ht = &EG(symbol_table);
zend_hash_update(&EG(symbol_table), "GLOBALS", sizeof("GLOBALS"), &globals, sizeof(zval *), NULL);
}
EG(active_symbol_table) = &EG(symbol_table);
zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_activator TSRMLS_CC);
EG(opline_ptr) = NULL;
EG(garbage_ptr) = 0;
zend_hash_init(&EG(included_files), 5, NULL, NULL, 0);
EG(ticks_count) = 0;
EG(user_error_handler) = NULL;
zend_ptr_stack_init(&EG(user_error_handlers));
EG(orig_error_reporting) = EG(error_reporting);
zend_objects_init(&EG(objects), 1024);
EG(full_tables_cleanup) = 0;
#ifdef ZEND_WIN32
EG(timed_out) = 0;
#endif
EG(exception) = NULL;
EG(scope) = NULL;
EG(main_class_ptr) = &CG(main_class);
CG(main_class).static_members = &EG(symbol_table);
EG(current_execute_data) = NULL;
EG(This) = NULL;
}
void shutdown_executor(TSRMLS_D)
{
zend_try {
zend_objects_call_destructors(&EG(objects) TSRMLS_CC);
zend_ptr_stack_destroy(&EG(arg_types_stack));
while (EG(symtable_cache_ptr)>=EG(symtable_cache)) {
zend_hash_destroy(*EG(symtable_cache_ptr));
efree(*EG(symtable_cache_ptr));
EG(symtable_cache_ptr)--;
}
zend_llist_apply(&zend_extensions, (llist_apply_func_t) zend_extension_deactivator TSRMLS_CC);
zend_hash_destroy(&EG(symbol_table));
while (EG(garbage_ptr)--) {
if (EG(garbage)[EG(garbage_ptr)]->refcount==1) {
zval_ptr_dtor(&EG(garbage)[EG(garbage_ptr)]);
}
}
zend_ptr_stack_destroy(&EG(argument_stack));
/* Destroy all op arrays */
if (EG(full_tables_cleanup)) {
zend_hash_apply(EG(function_table), (apply_func_t) is_not_internal_function TSRMLS_CC);
zend_hash_apply(EG(class_table), (apply_func_t) is_not_internal_class TSRMLS_CC);
} else {
zend_hash_reverse_apply(EG(function_table), (apply_func_t) is_not_internal_function TSRMLS_CC);
zend_hash_reverse_apply(EG(class_table), (apply_func_t) is_not_internal_class TSRMLS_CC);
}
} zend_end_try();
/* The regular list must be destroyed after the main symbol table and
* op arrays are destroyed.
*/
zend_destroy_rsrc_list(&EG(regular_list) TSRMLS_CC);
zend_try {
clean_non_persistent_constants(TSRMLS_C);
#if ZEND_DEBUG
signal(SIGSEGV, original_sigsegv_handler);
#endif
zend_hash_destroy(&EG(included_files));
if (EG(user_error_handler)) {
zval_dtor(EG(user_error_handler));
FREE_ZVAL(EG(user_error_handler));
}
zend_ptr_stack_clean(&EG(user_error_handlers), ZVAL_DESTRUCTOR, 1);
zend_ptr_stack_destroy(&EG(user_error_handlers));
EG(error_reporting) = EG(orig_error_reporting);
zend_objects_destroy(&EG(objects));
} zend_end_try();
}
ZEND_API char *get_active_function_name(TSRMLS_D)
{
if (!zend_is_executing(TSRMLS_C)) {
return NULL;
}
switch(EG(function_state_ptr)->function->type) {
case ZEND_USER_FUNCTION: {
char *function_name = ((zend_op_array *) EG(function_state_ptr)->function)->function_name;
if (function_name) {
return function_name;
} else {
return "main";
}
}
break;
case ZEND_INTERNAL_FUNCTION:
return ((zend_internal_function *) EG(function_state_ptr)->function)->function_name;
break;
default:
return NULL;
}
}
ZEND_API char *zend_get_executed_filename(TSRMLS_D)
{
if (EG(active_op_array)) {
return EG(active_op_array)->filename;
} else {
return "[no active file]";
}
}
ZEND_API uint zend_get_executed_lineno(TSRMLS_D)
{
if (EG(opline_ptr)) {
return active_opline->lineno;
} else {
return 0;
}
}
ZEND_API zend_bool zend_is_executing(TSRMLS_D)
{
return EG(in_execution);
}
ZEND_API void _zval_ptr_dtor(zval **zval_ptr ZEND_FILE_LINE_DC)
{
#if DEBUG_ZEND>=2
printf("Reducing refcount for %x (%x): %d->%d\n", *zval_ptr, zval_ptr, (*zval_ptr)->refcount, (*zval_ptr)->refcount-1);
#endif
(*zval_ptr)->refcount--;
if ((*zval_ptr)->refcount==0) {
zval_dtor(*zval_ptr);
safe_free_zval_ptr(*zval_ptr);
} else if ((*zval_ptr)->refcount == 1) {
(*zval_ptr)->is_ref = 0;
}
}
ZEND_API int zend_is_true(zval *op)
{
return i_zend_is_true(op);
}
#include "../TSRM/tsrm_strtok_r.h"
ZEND_API int zval_update_constant(zval **pp, void *arg TSRMLS_DC)
{
zval *p = *pp;
zend_bool inline_change = (zend_bool) (unsigned long) arg;
zval const_value;
if (p->type == IS_CONSTANT) {
int refcount;
SEPARATE_ZVAL(pp);
p = *pp;
refcount = p->refcount;
if (strchr(p->value.str.val, ':')) {
char *cur, *temp;
char *last;
zend_class_entry *ce;
zval **value;
last = tsrm_strtok_r(p->value.str.val, ":", &temp);
if (zend_hash_find(EG(class_table), last, strlen(last)+1, (void **)&ce) == FAILURE) {
zend_error(E_ERROR, "Invalid class! Improve this error message");
}
last = tsrm_strtok_r(NULL, ":", &temp);
for(;;) {
cur = tsrm_strtok_r(NULL, ":", &temp);
if (!cur) {
break;
}
if (zend_hash_find(&ce->class_table, last, strlen(last)+1, (void **)&ce) == FAILURE) {
zend_error(E_ERROR, "Invalid class! Improve this error message");
}
last = cur;
}
if (zend_hash_find(&ce->constants_table, last, strlen(last)+1, (void **) &value) == FAILURE) {
zend_error(E_ERROR, "Invalid class! Improve this error message");
}
const_value = **value;
zval_copy_ctor(&const_value);
if (inline_change) {
STR_FREE(p->value.str.val);
}
*p = const_value;
} else {
if (!zend_get_constant(p->value.str.val, p->value.str.len, &const_value TSRMLS_CC)) {
zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'",
p->value.str.val,
p->value.str.val);
p->type = IS_STRING;
if (!inline_change) {
zval_copy_ctor(p);
}
} else {
if (inline_change) {
STR_FREE(p->value.str.val);
}
*p = const_value;
}
}
INIT_PZVAL(p);
p->refcount = refcount;
} else if (p->type == IS_CONSTANT_ARRAY) {
zval **element;
char *str_index;
uint str_index_len;
ulong num_index;
SEPARATE_ZVAL(pp);
p = *pp;
p->type = IS_ARRAY;
/* First go over the array and see if there are any constant indices */
zend_hash_internal_pointer_reset(p->value.ht);
while (zend_hash_get_current_data(p->value.ht, (void **) &element)==SUCCESS) {
if (!(Z_TYPE_PP(element) & IS_CONSTANT_INDEX)) {
zend_hash_move_forward(p->value.ht);
continue;
}
Z_TYPE_PP(element) &= ~IS_CONSTANT_INDEX;
if (zend_hash_get_current_key_ex(p->value.ht, &str_index, &str_index_len, &num_index, 0, NULL)!=HASH_KEY_IS_STRING) {
zend_hash_move_forward(p->value.ht);
continue;
}
if (!zend_get_constant(str_index, str_index_len-1, &const_value TSRMLS_CC)) {
zend_error(E_NOTICE, "Use of undefined constant %s - assumed '%s'", str_index, str_index);
zend_hash_move_forward(p->value.ht);
continue;
}
switch (const_value.type) {
case IS_STRING:
zend_hash_update(p->value.ht, const_value.value.str.val, const_value.value.str.len+1, element, sizeof(zval *), NULL);
(*element)->refcount++;
break;
case IS_LONG:
zend_hash_index_update(p->value.ht, const_value.value.lval, element, sizeof(zval *), NULL);
(*element)->refcount++;
break;
}
zend_hash_del(p->value.ht, str_index, str_index_len);
}
zend_hash_apply_with_argument(p->value.ht, (apply_func_arg_t) zval_update_constant, (void *) 1 TSRMLS_CC);
}
return 0;
}
int call_user_function(HashTable *function_table, zval **object_pp, zval *function_name, zval *retval_ptr, int param_count, zval *params[] TSRMLS_DC)
{
zval ***params_array = (zval ***) emalloc(sizeof(zval **)*param_count);
int i;
int ex_retval;
zval *local_retval_ptr;
for (i=0; i<param_count; i++) {
params_array[i] = &params[i];
}
ex_retval = call_user_function_ex(function_table, object_pp, function_name, &local_retval_ptr, param_count, params_array, 1, NULL TSRMLS_CC);
if (local_retval_ptr) {
COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
} else {
INIT_ZVAL(*retval_ptr);
}
efree(params_array);
return ex_retval;
}
int call_user_function_ex(HashTable *function_table, zval **object_pp, zval *function_name, zval **retval_ptr_ptr, int param_count, zval **params[], int no_separation, HashTable *symbol_table TSRMLS_DC)
{
int i;
zval **original_return_value;
HashTable *calling_symbol_table;
zend_function_state function_state;
zend_function_state *original_function_state_ptr;
zend_op_array *original_op_array;
zend_op **original_opline_ptr;
int orig_free_op1, orig_free_op2;
int (*orig_unary_op)(zval *result, zval *op1);
int (*orig_binary_op)(zval *result, zval *op1, zval *op2 TSRMLS_DC);
zval function_name_copy;
zend_class_entry *current_scope;
zend_class_entry *calling_scope = NULL;
zval *current_this;
*retval_ptr_ptr = NULL;
if (function_name->type==IS_ARRAY) { /* assume array($obj, $name) couple */
zval **tmp_object_ptr, **tmp_real_function_name;
if (zend_hash_index_find(function_name->value.ht, 0, (void **) &tmp_object_ptr)==FAILURE) {
return FAILURE;
}
if (zend_hash_index_find(function_name->value.ht, 1, (void **) &tmp_real_function_name)==FAILURE) {
return FAILURE;
}
function_name = *tmp_real_function_name;
SEPARATE_ZVAL_IF_NOT_REF(tmp_object_ptr);
object_pp = tmp_object_ptr;
(*object_pp)->is_ref = 1;
}
if (object_pp && !*object_pp) {
object_pp = NULL;
}
if (object_pp) {
/* TBI!! new object handlers */
if (Z_TYPE_PP(object_pp) == IS_OBJECT) {
if(!IS_ZEND_STD_OBJECT(**object_pp)) {
zend_error(E_WARNING, "Cannot use call_user_function on overloaded objects");
return FAILURE;
}
function_table = &Z_OBJCE_PP(object_pp)->function_table;
calling_scope = Z_OBJCE_PP(object_pp);
} else if (Z_TYPE_PP(object_pp) == IS_STRING) {
zend_class_entry **ce;
char *lc_class;
int found;
lc_class = estrndup(Z_STRVAL_PP(object_pp), Z_STRLEN_PP(object_pp));
zend_str_tolower(lc_class, Z_STRLEN_PP(object_pp));
found = zend_hash_find(EG(class_table), lc_class, Z_STRLEN_PP(object_pp) + 1, (void **) &ce);
efree(lc_class);
if (found == FAILURE)
return FAILURE;
function_table = &(*ce)->function_table;
calling_scope = *ce;
object_pp = NULL;
} else
return FAILURE;
}
if (function_name->type!=IS_STRING) {
return FAILURE;
}
function_name_copy = *function_name;
zval_copy_ctor(&function_name_copy);
zend_str_tolower(function_name_copy.value.str.val, function_name_copy.value.str.len);
original_function_state_ptr = EG(function_state_ptr);
if (zend_hash_find(function_table, function_name_copy.value.str.val, function_name_copy.value.str.len+1, (void **) &function_state.function)==FAILURE) {
zval_dtor(&function_name_copy);
return FAILURE;
}
zval_dtor(&function_name_copy);
for (i=0; i<param_count; i++) {
zval *param;
if (function_state.function->common.arg_types
&& i<function_state.function->common.arg_types[0]
&& function_state.function->common.arg_types[i+1]==BYREF_FORCE
&& !PZVAL_IS_REF(*params[i])) {
if ((*params[i])->refcount>1) {
zval *new_zval;
if (no_separation) {
return FAILURE;
}
ALLOC_ZVAL(new_zval);
*new_zval = **params[i];
zval_copy_ctor(new_zval);
new_zval->refcount = 1;
(*params[i])->refcount--;
*params[i] = new_zval;
}
(*params[i])->refcount++;
(*params[i])->is_ref = 1;
param = *params[i];
} else if (*params[i] != &EG(uninitialized_zval)) {
(*params[i])->refcount++;
param = *params[i];
} else {
ALLOC_ZVAL(param);
*param = **(params[i]);
INIT_PZVAL(param);
}
zend_ptr_stack_push(&EG(argument_stack), param);
}
zend_ptr_stack_n_push(&EG(argument_stack), 2, (void *) (long) param_count, NULL);
EG(function_state_ptr) = &function_state;
current_scope = EG(scope);
EG(scope) = calling_scope;
current_this = EG(This);
if (object_pp) {
EG(This) = *object_pp;
if (!PZVAL_IS_REF(EG(This))) {
EG(This)->refcount++; /* For $this pointer */
} else {
zval *this_ptr;
ALLOC_ZVAL(this_ptr);
*this_ptr = *EG(This);
INIT_PZVAL(this_ptr);
zval_copy_ctor(this_ptr);
EG(This) = this_ptr;
}
} else {
EG(This) = NULL;
}
if (function_state.function->type == ZEND_USER_FUNCTION) {
calling_symbol_table = EG(active_symbol_table);
if (symbol_table) {
EG(active_symbol_table) = symbol_table;
} else {
ALLOC_HASHTABLE(EG(active_symbol_table));
zend_hash_init(EG(active_symbol_table), 0, NULL, ZVAL_PTR_DTOR, 0);
}
original_return_value = EG(return_value_ptr_ptr);
original_op_array = EG(active_op_array);
EG(return_value_ptr_ptr) = retval_ptr_ptr;
EG(active_op_array) = (zend_op_array *) function_state.function;
original_opline_ptr = EG(opline_ptr);
orig_free_op1 = EG(free_op1);
orig_free_op2 = EG(free_op2);
orig_unary_op = EG(unary_op);
orig_binary_op = EG(binary_op);
zend_execute(EG(active_op_array) TSRMLS_CC);
if (!symbol_table) {
zend_hash_destroy(EG(active_symbol_table));
FREE_HASHTABLE(EG(active_symbol_table));
}
EG(active_symbol_table) = calling_symbol_table;
EG(active_op_array) = original_op_array;
EG(return_value_ptr_ptr)=original_return_value;
EG(opline_ptr) = original_opline_ptr;
EG(free_op1) = orig_free_op1;
EG(free_op2) = orig_free_op2;
EG(unary_op) = orig_unary_op;
EG(binary_op) = orig_binary_op;
} else {
ALLOC_INIT_ZVAL(*retval_ptr_ptr);
((zend_internal_function *) function_state.function)->handler(param_count, *retval_ptr_ptr, (object_pp?*object_pp:NULL), 1 TSRMLS_CC);
INIT_PZVAL(*retval_ptr_ptr);
}
zend_ptr_stack_clear_multiple(TSRMLS_C);
EG(function_state_ptr) = original_function_state_ptr;
if (EG(This)) {
zval_ptr_dtor(&EG(This));
}
EG(scope) = current_scope;
EG(This) = current_this;
return SUCCESS;
}
ZEND_API int zend_eval_string(char *str, zval *retval_ptr, char *string_name TSRMLS_DC)
{
zval pv;
zend_op_array *new_op_array;
zend_op_array *original_active_op_array = EG(active_op_array);
zend_function_state *original_function_state_ptr = EG(function_state_ptr);
zend_uchar original_handle_op_arrays;
int retval;
if (retval_ptr) {
pv.value.str.len = strlen(str)+sizeof("return ;")-1;
pv.value.str.val = emalloc(pv.value.str.len+1);
strcpy(pv.value.str.val, "return ");
strcat(pv.value.str.val, str);
strcat(pv.value.str.val, " ;");
} else {
pv.value.str.len = strlen(str);
pv.value.str.val = estrndup(str, pv.value.str.len);
}
pv.type = IS_STRING;
/*printf("Evaluating '%s'\n", pv.value.str.val);*/
original_handle_op_arrays = CG(handle_op_arrays);
CG(handle_op_arrays) = 0;
new_op_array = compile_string(&pv, string_name TSRMLS_CC);
CG(handle_op_arrays) = original_handle_op_arrays;
if (new_op_array) {
zval *local_retval_ptr=NULL;
zval **original_return_value_ptr_ptr = EG(return_value_ptr_ptr);
zend_op **original_opline_ptr = EG(opline_ptr);
EG(return_value_ptr_ptr) = &local_retval_ptr;
EG(active_op_array) = new_op_array;
EG(no_extensions)=1;
zend_execute(new_op_array TSRMLS_CC);
if (local_retval_ptr) {
if (retval_ptr) {
COPY_PZVAL_TO_ZVAL(*retval_ptr, local_retval_ptr);
} else {
zval_ptr_dtor(&local_retval_ptr);
}
} else {
if (retval_ptr) {
INIT_ZVAL(*retval_ptr);
}
}
EG(no_extensions)=0;
EG(opline_ptr) = original_opline_ptr;
EG(active_op_array) = original_active_op_array;
EG(function_state_ptr) = original_function_state_ptr;
destroy_op_array(new_op_array);
efree(new_op_array);
EG(return_value_ptr_ptr) = original_return_value_ptr_ptr;
retval = SUCCESS;
} else {
retval = FAILURE;
}
zval_dtor(&pv);
return retval;
}
void execute_new_code(TSRMLS_D)
{
zend_op *opline, *end;
zend_op *ret_opline;
zval *local_retval=NULL;
if (!CG(interactive)
|| CG(active_op_array)->backpatch_count>0
|| CG(active_op_array)->function_name
|| CG(active_op_array)->type!=ZEND_USER_FUNCTION) {
return;
}
ret_opline = get_next_op(CG(active_op_array) TSRMLS_CC);
ret_opline->opcode = ZEND_RETURN;
ret_opline->op1.op_type = IS_CONST;
INIT_ZVAL(ret_opline->op1.u.constant);
SET_UNUSED(ret_opline->op2);
if (!CG(active_op_array)->start_op) {
CG(active_op_array)->start_op = CG(active_op_array)->opcodes;
}
opline=CG(active_op_array)->start_op;
end=CG(active_op_array)->opcodes+CG(active_op_array)->last;
while (opline<end) {
if (opline->op1.op_type==IS_CONST) {
opline->op1.u.constant.is_ref = 1;
opline->op1.u.constant.refcount = 2; /* Make sure is_ref won't be reset */
}
if (opline->op2.op_type==IS_CONST) {
opline->op2.u.constant.is_ref = 1;
opline->op2.u.constant.refcount = 2;
}
opline++;
}
EG(return_value_ptr_ptr) = &local_retval;
EG(active_op_array) = CG(active_op_array);
zend_execute(CG(active_op_array) TSRMLS_CC);
if (local_retval) {
zval_ptr_dtor(&local_retval);
}
CG(active_op_array)->last--; /* get rid of that ZEND_RETURN */
CG(active_op_array)->start_op = CG(active_op_array)->opcodes+CG(active_op_array)->last;
}
ZEND_API void zend_timeout(int dummy)
{
TSRMLS_FETCH();
/* is there any point in this? we're terminating the request anyway...
PG(connection_status) |= PHP_CONNECTION_TIMEOUT;
*/
zend_error(E_ERROR, "Maximum execution time of %d second%s exceeded",
EG(timeout_seconds), EG(timeout_seconds) == 1 ? "" : "s");
}
#ifdef ZEND_WIN32
static LRESULT CALLBACK zend_timeout_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) {
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_REGISTER_ZEND_TIMEOUT:
/* wParam is the thread id pointer, lParam is the timeout amount in seconds */
if (lParam==0) {
KillTimer(timeout_window, wParam);
} else {
SetTimer(timeout_window, wParam, lParam*1000, NULL);
}
break;
case WM_UNREGISTER_ZEND_TIMEOUT:
/* wParam is the thread id pointer */
KillTimer(timeout_window, wParam);
break;
case WM_TIMER: {
#ifdef ZTS
void ***tsrm_ls;
tsrm_ls = ts_resource_ex(0, &wParam);
if (!tsrm_ls) {
/* Thread died before receiving its timeout? */
break;
}
#endif
KillTimer(timeout_window, wParam);
EG(timed_out) = 1;
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
static unsigned __stdcall timeout_thread_proc(void *pArgs)
{
MSG message;
wc.style=0;
wc.lpfnWndProc = zend_timeout_WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=NULL;
wc.hIcon=NULL;
wc.hCursor=NULL;
wc.hbrBackground=(HBRUSH)(COLOR_BACKGROUND + 5);
wc.lpszMenuName=NULL;
wc.lpszClassName = "Zend Timeout Window";
if (!RegisterClass(&wc)) {
return -1;
}
timeout_window = CreateWindow(wc.lpszClassName, wc.lpszClassName, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
SetEvent(timeout_thread_event);
while (GetMessage(&message, NULL, 0, 0)) {
SendMessage(timeout_window, message.message, message.wParam, message.lParam);
if (message.message == WM_QUIT) {
break;
}
}
DestroyWindow(timeout_window);
UnregisterClass(wc.lpszClassName, NULL);
return 0;
}
void zend_init_timeout_thread()
{
timeout_thread_event = CreateEvent(NULL, FALSE, FALSE, NULL);
_beginthreadex(NULL, 0, timeout_thread_proc, NULL, 0, &timeout_thread_id);
WaitForSingleObject(timeout_thread_event, INFINITE);
}
void zend_shutdown_timeout_thread()
{
if (!timeout_thread_initialized) {
return;
}
PostThreadMessage(timeout_thread_id, WM_QUIT, 0, 0);
}
#endif
/* This one doesn't exists on QNX */
#ifndef SIGPROF
#define SIGPROF 27
#endif
void zend_set_timeout(long seconds)
{
TSRMLS_FETCH();
EG(timeout_seconds) = seconds;
#ifdef ZEND_WIN32
if (timeout_thread_initialized==0 && InterlockedIncrement(&timeout_thread_initialized)==1) {
/* We start up this process-wide thread here and not in zend_startup(), because if Zend
* is initialized inside a DllMain(), you're not supposed to start threads from it.
*/
zend_init_timeout_thread();
}
PostThreadMessage(timeout_thread_id, WM_REGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) seconds);
#else
# ifdef HAVE_SETITIMER
{
struct itimerval t_r; /* timeout requested */
sigset_t sigset;
t_r.it_value.tv_sec = seconds;
t_r.it_value.tv_usec = t_r.it_interval.tv_sec = t_r.it_interval.tv_usec = 0;
setitimer(ITIMER_PROF, &t_r, NULL);
signal(SIGPROF, zend_timeout);
sigemptyset(&sigset);
sigaddset(&sigset, SIGPROF);
sigprocmask(SIG_UNBLOCK, &sigset, NULL);
}
# endif
#endif
}
void zend_unset_timeout(TSRMLS_D)
{
#ifdef ZEND_WIN32
PostThreadMessage(timeout_thread_id, WM_UNREGISTER_ZEND_TIMEOUT, (WPARAM) GetCurrentThreadId(), (LPARAM) 0);
#else
# ifdef HAVE_SETITIMER
{
struct itimerval no_timeout;
no_timeout.it_value.tv_sec = no_timeout.it_value.tv_usec = no_timeout.it_interval.tv_sec = no_timeout.it_interval.tv_usec = 0;
setitimer(ITIMER_PROF, &no_timeout, NULL);
}
# endif
#endif
}
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