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Allow to create snapshots and re-use them

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This commit is contained in:
Stefan Siegl 2016-02-28 17:00:47 +01:00
parent 82ffaa2c35
commit b405a34690
3 changed files with 73 additions and 11 deletions
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13
README.md
View File

@ -62,13 +62,14 @@ class V8Js
/* Methods */
/**
* Initializes and starts V8 engine and Returns new V8Js object with it's own V8 context.
* Initializes and starts V8 engine and returns new V8Js object with it's own V8 context.
* @param string $object_name
* @param array $variables
* @param array $extensions
* @param bool $report_uncaught_exceptions
* @param string $snapshot_blob
*/
public function __construct($object_name = "PHP", array $variables = NULL, array $extensions = NULL, $report_uncaught_exceptions = TRUE)
public function __construct($object_name = "PHP", array $variables = [], array $extensions = [], $report_uncaught_exceptions = TRUE, $snapshot_blob = NULL)
{}
/**
@ -174,6 +175,14 @@ class V8Js
*/
public static function getExtensions()
{}
/**
* Creates a custom V8 heap snapshot with the provided JavaScript source embedded.
* @param string $embed_source
* @return string|false
*/
public static function createSnapshot($embed_source)
{}
}
final class V8JsScriptException extends Exception

68
v8js_class.cc
View File

@ -207,6 +207,10 @@ static void v8js_free_storage(void *object TSRMLS_DC) /* {{{ */
c->modules_stack.~vector();
c->modules_base.~vector();
if (c->snapshot_blob.data) {
efree((void*)c->snapshot_blob.data);
}
efree(object);
}
/* }}} */
@ -327,12 +331,12 @@ static void v8js_fatal_error_handler(const char *location, const char *message)
((key_len == sizeof(mname)) && \
!strncasecmp(key, mname, key_len - 1))
/* {{{ proto void V8Js::__construct([string object_name [, array variables [, array extensions [, bool report_uncaught_exceptions]]])
/* {{{ proto void V8Js::__construct([string object_name [, array variables [, array extensions [, bool report_uncaught_exceptions [, string snapshot_blob]]]]])
__construct for V8Js */
static PHP_METHOD(V8Js, __construct)
{
char *object_name = NULL, *class_name = NULL;
int object_name_len = 0, free = 0;
char *object_name = NULL, *class_name = NULL, *snapshot_blob = NULL;
int object_name_len = 0, free = 0, snapshot_blob_len = 0;
zend_uint class_name_len = 0;
zend_bool report_uncaught = 1;
zval *vars_arr = NULL, *exts_arr = NULL;
@ -346,7 +350,7 @@ static PHP_METHOD(V8Js, __construct)
return;
}
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|saab", &object_name, &object_name_len, &vars_arr, &exts_arr, &report_uncaught) == FAILURE) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|saabs", &object_name, &object_name_len, &vars_arr, &exts_arr, &report_uncaught, &snapshot_blob, &snapshot_blob_len) == FAILURE) {
return;
}
@ -360,9 +364,17 @@ static PHP_METHOD(V8Js, __construct)
#if PHP_V8_API_VERSION >= 4004044
static ArrayBufferAllocator array_buffer_allocator;
static v8::Isolate::CreateParams create_params;
create_params.array_buffer_allocator = &array_buffer_allocator;
c->isolate = v8::Isolate::New(create_params);
new (&c->create_params) v8::Isolate::CreateParams();
c->create_params.array_buffer_allocator = &array_buffer_allocator;
new (&c->snapshot_blob) v8::StartupData();
if (snapshot_blob && snapshot_blob_len) {
c->snapshot_blob.data = snapshot_blob;
c->snapshot_blob.raw_size = snapshot_blob_len;
c->create_params.snapshot_blob = &c->snapshot_blob;
}
c->isolate = v8::Isolate::New(c->create_params);
#else
c->isolate = v8::Isolate::New();
#endif
@ -991,6 +1003,10 @@ static int v8js_register_extension(char *name, uint name_len, char *source, uint
}
/* }}} */
/* ## Static methods ## */
/* {{{ proto bool V8Js::registerExtension(string ext_name, string script [, array deps [, bool auto_enable]])
*/
static PHP_METHOD(V8Js, registerExtension)
@ -1015,8 +1031,6 @@ static PHP_METHOD(V8Js, registerExtension)
}
/* }}} */
/* ## Static methods ## */
/* {{{ proto array V8Js::getExtensions()
*/
static PHP_METHOD(V8Js, getExtensions)
@ -1063,6 +1077,37 @@ static PHP_METHOD(V8Js, getExtensions)
}
/* }}} */
/* {{{ proto string|bool V8Js::createSnapshot(string embed_source)
*/
static PHP_METHOD(V8Js, createSnapshot)
{
char *script;
int script_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &script, &script_len) == FAILURE) {
return;
}
if (!script_len) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Script cannot be empty");
RETURN_FALSE;
}
/* Initialize V8, if not already done. */
v8js_v8_init(TSRMLS_C);
v8::StartupData snapshot_blob = v8::V8::CreateSnapshotDataBlob(script);
if (!snapshot_blob.data) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to create V8 heap snapshot. Check $embed_source for errors.");
RETURN_FALSE;
}
RETVAL_STRINGL(snapshot_blob.data, snapshot_blob.raw_size, 1);
delete[] snapshot_blob.data;
}
/* }}} */
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_v8js_construct, 0, 0, 0)
ZEND_ARG_INFO(0, object_name)
@ -1126,6 +1171,10 @@ ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_v8js_getextensions, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_v8js_createsnapshot, 0, 0, 1)
ZEND_ARG_INFO(0, script)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_v8js_settimelimit, 0, 0, 1)
ZEND_ARG_INFO(0, time_limit)
ZEND_END_ARG_INFO()
@ -1149,6 +1198,7 @@ const zend_function_entry v8js_methods[] = { /* {{{ */
PHP_ME(V8Js, setModuleLoader, arginfo_v8js_setmoduleloader, ZEND_ACC_PUBLIC)
PHP_ME(V8Js, registerExtension, arginfo_v8js_registerextension, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
PHP_ME(V8Js, getExtensions, arginfo_v8js_getextensions, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
PHP_ME(V8Js, createSnapshot, arginfo_v8js_createsnapshot, ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)
PHP_ME(V8Js, setTimeLimit, arginfo_v8js_settimelimit, ZEND_ACC_PUBLIC)
PHP_ME(V8Js, setMemoryLimit, arginfo_v8js_setmemorylimit, ZEND_ACC_PUBLIC)
{NULL, NULL, NULL}

3
v8js_class.h
View File

@ -67,6 +67,9 @@ struct v8js_ctx {
std::vector<v8js_accessor_ctx *> accessor_list;
std::vector<struct _v8js_script *> script_objects;
char *tz;
v8::Isolate::CreateParams create_params;
v8::StartupData snapshot_blob;
#ifdef ZTS
void ***zts_ctx;
#endif