mirror of
https://github.com/phpv8/v8js.git
synced 2024-11-08 15:48:40 +00:00
39062b4248
Looks like we have to test for internal functions unfortunately since the public V8 snapshot API is available no matter whether the library really supports it or not.
302 lines
8.4 KiB
C++
302 lines
8.4 KiB
C++
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2015 The PHP Group |
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+----------------------------------------------------------------------+
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| http://www.opensource.org/licenses/mit-license.php MIT License |
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+----------------------------------------------------------------------+
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| Author: Jani Taskinen <jani.taskinen@iki.fi> |
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| Author: Patrick Reilly <preilly@php.net> |
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| Author: Stefan Siegl <stesie@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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extern "C" {
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#include "php.h"
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#include "ext/date/php_date.h"
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#include "ext/standard/php_string.h"
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#include "zend_interfaces.h"
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#include "zend_closures.h"
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#include "zend_exceptions.h"
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}
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#if !defined(_WIN32) && PHP_V8_API_VERSION >= 3029036
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#include <libplatform/libplatform.h>
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#endif
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#include "php_v8js_macros.h"
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#include "v8js_v8.h"
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#include "v8js_timer.h"
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#include "v8js_exceptions.h"
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void v8js_v8_init(TSRMLS_D) /* {{{ */
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{
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/* Run only once; thread-local test first */
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if (V8JSG(v8_initialized)) {
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return;
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}
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/* Set thread-local flag, that V8 was initialized. */
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V8JSG(v8_initialized) = 1;
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#ifdef ZTS
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v8js_process_globals.lock.lock();
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if(v8js_process_globals.v8_initialized) {
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/* V8 already has been initialized by another thread */
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v8js_process_globals.lock.unlock();
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return;
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}
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#endif
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#ifdef PHP_V8_USE_EXTERNAL_STARTUP_DATA
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v8::V8::InitializeExternalStartupData(
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PHP_V8_NATIVES_BLOB_PATH,
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PHP_V8_SNAPSHOT_BLOB_PATH
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);
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#endif
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#if !defined(_WIN32) && PHP_V8_API_VERSION >= 3029036
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v8js_process_globals.v8_platform = v8::platform::CreateDefaultPlatform();
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v8::V8::InitializePlatform(v8js_process_globals.v8_platform);
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#endif
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/* Set V8 command line flags (must be done before V8::Initialize()!) */
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if (v8js_process_globals.v8_flags) {
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v8::V8::SetFlagsFromString(v8js_process_globals.v8_flags,
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strlen(v8js_process_globals.v8_flags));
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}
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/* Initialize V8 */
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v8::V8::Initialize();
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#ifdef ZTS
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v8js_process_globals.v8_initialized = 1;
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v8js_process_globals.lock.unlock();
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#endif
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}
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/* }}} */
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void v8js_v8_call(v8js_ctx *c, zval **return_value,
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long flags, long time_limit, long memory_limit,
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std::function< v8::Local<v8::Value>(v8::Isolate *) >& v8_call TSRMLS_DC) /* {{{ */
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{
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char *tz = NULL;
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V8JS_CTX_PROLOGUE(c);
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V8JSG(timer_mutex).lock();
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c->time_limit_hit = false;
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c->memory_limit_hit = false;
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V8JSG(timer_mutex).unlock();
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/* Catch JS exceptions */
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v8::TryCatch try_catch;
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/* Set flags for runtime use */
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c->flags = flags;
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/* Check if timezone has been changed and notify V8 */
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tz = getenv("TZ");
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if (tz != NULL) {
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if (c->tz == NULL) {
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c->tz = strdup(tz);
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}
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else if (strcmp(c->tz, tz) != 0) {
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v8::Date::DateTimeConfigurationChangeNotification(c->isolate);
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free(c->tz);
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c->tz = strdup(tz);
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}
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}
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if (time_limit > 0 || memory_limit > 0) {
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// If timer thread is not running then start it
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if (!V8JSG(timer_thread)) {
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// If not, start timer thread
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V8JSG(timer_thread) = new std::thread(v8js_timer_thread TSRMLS_CC);
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}
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}
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/* Always pass the timer to the stack so there can be follow-up changes to
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* the time & memory limit. */
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v8js_timer_push(time_limit, memory_limit, c TSRMLS_CC);
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/* Execute script */
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c->in_execution++;
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v8::Local<v8::Value> result = v8_call(c->isolate);
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c->in_execution--;
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/* Pop our context from the stack and read (possibly updated) limits
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* into local variables. */
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V8JSG(timer_mutex).lock();
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v8js_timer_ctx *timer_ctx = V8JSG(timer_stack).front();
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V8JSG(timer_stack).pop_front();
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V8JSG(timer_mutex).unlock();
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time_limit = timer_ctx->time_limit;
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memory_limit = timer_ctx->memory_limit;
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efree(timer_ctx);
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/* Check for fatal error marker possibly set by v8js_error_handler; just
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* rethrow the error since we're now out of V8. */
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if(V8JSG(fatal_error_abort)) {
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zend_bailout();
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}
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char exception_string[64];
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if (c->time_limit_hit) {
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// Execution has been terminated due to time limit
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sprintf(exception_string, "Script time limit of %lu milliseconds exceeded", time_limit);
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zend_throw_exception(php_ce_v8js_time_limit_exception, exception_string, 0 TSRMLS_CC);
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return;
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}
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if (c->memory_limit_hit) {
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// Execution has been terminated due to memory limit
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sprintf(exception_string, "Script memory limit of %lu bytes exceeded", memory_limit);
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zend_throw_exception(php_ce_v8js_memory_limit_exception, exception_string, 0 TSRMLS_CC);
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return;
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}
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if (!try_catch.CanContinue()) {
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// At this point we can't re-throw the exception
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return;
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}
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/* There was pending exception left from earlier executions -> throw to PHP */
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if (c->pending_exception) {
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zend_throw_exception_object(c->pending_exception TSRMLS_CC);
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c->pending_exception = NULL;
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}
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/* Handle runtime JS exceptions */
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if (try_catch.HasCaught()) {
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/* Pending exceptions are set only in outer caller, inner caller exceptions are always rethrown */
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if (c->in_execution < 1) {
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/* Report immediately if report_uncaught is true */
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if (c->report_uncaught) {
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v8js_throw_script_exception(c->isolate, &try_catch TSRMLS_CC);
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return;
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}
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/* Exception thrown from JS, preserve it for future execution */
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if (result.IsEmpty()) {
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MAKE_STD_ZVAL(c->pending_exception);
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v8js_create_script_exception(c->pending_exception, c->isolate, &try_catch TSRMLS_CC);
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return;
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}
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}
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/* Rethrow back to JS */
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try_catch.ReThrow();
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return;
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}
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/* Convert V8 value to PHP value */
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if (!result.IsEmpty()) {
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v8js_to_zval(result, *return_value, flags, c->isolate TSRMLS_CC);
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}
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}
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/* }}} */
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void v8js_terminate_execution(v8::Isolate *isolate) /* {{{ */
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{
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if(v8::V8::IsExecutionTerminating(isolate)) {
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/* Execution already terminating, needn't trigger it again and
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* especially must not execute the spinning loop (which would cause
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* crashes in V8 itself, at least with 4.2 and 4.3 version lines). */
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return;
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}
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/* Unfortunately just calling TerminateExecution on the isolate is not
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* enough, since v8 just marks the thread as "to be aborted" and doesn't
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* immediately do so. Hence we enter an endless loop after signalling
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* termination, so we definitely don't execute JS code after the exit()
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* statement. */
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v8::Locker locker(isolate);
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v8::Isolate::Scope isolate_scope(isolate);
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v8::HandleScope handle_scope(isolate);
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v8::Local<v8::String> source = V8JS_STR("for(;;);");
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v8::Local<v8::Script> script = v8::Script::Compile(source);
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v8::V8::TerminateExecution(isolate);
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script->Run();
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}
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/* }}} */
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int v8js_get_properties_hash(v8::Handle<v8::Value> jsValue, HashTable *retval, int flags, v8::Isolate *isolate TSRMLS_DC) /* {{{ */
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{
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v8::Local<v8::Object> jsObj = jsValue->ToObject();
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if (!jsObj.IsEmpty()) {
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v8::Local<v8::Array> jsKeys = jsObj->GetPropertyNames();
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for (unsigned i = 0; i < jsKeys->Length(); i++)
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{
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v8::Local<v8::String> jsKey = jsKeys->Get(i)->ToString();
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/* Skip any prototype properties */
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if (!jsObj->HasOwnProperty(jsKey) && !jsObj->HasRealNamedProperty(jsKey) && !jsObj->HasRealNamedCallbackProperty(jsKey)) {
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continue;
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}
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v8::Local<v8::Value> jsVal = jsObj->Get(jsKey);
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v8::String::Utf8Value cstr(jsKey);
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const char *key = ToCString(cstr);
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zval *value = NULL;
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v8::Local<v8::Value> php_object;
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if (jsVal->IsObject()) {
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php_object = v8::Local<v8::Object>::Cast(jsVal)->GetHiddenValue(V8JS_SYM(PHPJS_OBJECT_KEY));
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}
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if (!php_object.IsEmpty()) {
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/* This is a PHP object, passed to JS and back. */
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value = reinterpret_cast<zval *>(v8::External::Cast(*php_object)->Value());
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Z_ADDREF_P(value);
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}
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else {
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MAKE_STD_ZVAL(value);
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if (v8js_to_zval(jsVal, value, flags, isolate TSRMLS_CC) == FAILURE) {
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zval_ptr_dtor(&value);
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return FAILURE;
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}
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}
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if ((flags & V8JS_FLAG_FORCE_ARRAY) || jsValue->IsArray()) {
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zend_symtable_update(retval, key, strlen(key) + 1, (void *)&value, sizeof(zval *), NULL);
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} else {
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zend_hash_update(retval, key, strlen(key) + 1, (void *) &value, sizeof(zval *), NULL);
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}
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}
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return SUCCESS;
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}
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return FAILURE;
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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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* vim600: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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*/
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