gecko/dom/workers/WorkerScope.cpp
Igor Bukanov ed3f5972bd bug 736978 - remove JS_FinalizeStub. r=:billm
Currently the GC finalizes on the background thread only objects with null
JSClass::finalize. However, this implies that any object that uses
JS_FinalizeStub for the finalizer would be prevented from the background
finalization.

To fix this the patch removes JS_FinalizeStub replacing it with NULL in all
cases when the class has no custom finalizer. For style consistency the patch
also removed the usage of JSCLASS_NO_OPTIONAL_MEMBERS in the static
declarations as the compiler fills the missing fields with null in any cases.
2012-03-19 15:27:58 +01:00

930 lines
24 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Web Workers.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com> (Original Author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/Util.h"
#include "WorkerScope.h"
#include "jsapi.h"
#include "jsdbgapi.h"
#include "nsTraceRefcnt.h"
#include "xpcpublic.h"
#include "ChromeWorkerScope.h"
#include "Events.h"
#include "EventTarget.h"
#include "Exceptions.h"
#include "File.h"
#include "FileReaderSync.h"
#include "ListenerManager.h"
#include "Location.h"
#include "Navigator.h"
#include "Principal.h"
#include "ScriptLoader.h"
#include "Worker.h"
#include "WorkerPrivate.h"
#include "XMLHttpRequest.h"
#ifdef ANDROID
#include <android/log.h>
#endif
#include "WorkerInlines.h"
#define PROPERTY_FLAGS \
(JSPROP_ENUMERATE | JSPROP_SHARED)
#define FUNCTION_FLAGS \
JSPROP_ENUMERATE
using namespace mozilla;
USING_WORKERS_NAMESPACE
namespace {
class WorkerGlobalScope : public events::EventTarget
{
static JSClass sClass;
static JSPropertySpec sProperties[];
static JSFunctionSpec sFunctions[];
enum
{
SLOT_wrappedScope = 0,
SLOT_wrappedFunction
};
enum
{
SLOT_location = 0,
SLOT_navigator,
SLOT_COUNT
};
// Must be traced!
jsval mSlots[SLOT_COUNT];
enum
{
STRING_onerror = 0,
STRING_onclose,
STRING_COUNT
};
static const char* const sEventStrings[STRING_COUNT];
protected:
WorkerPrivate* mWorker;
public:
static JSClass*
Class()
{
return &sClass;
}
static JSObject*
InitClass(JSContext* aCx, JSObject* aObj, JSObject* aParentProto)
{
return JS_InitClass(aCx, aObj, aParentProto, &sClass, Construct, 0,
sProperties, sFunctions, NULL, NULL);
}
protected:
WorkerGlobalScope(WorkerPrivate* aWorker)
: mWorker(aWorker)
{
MOZ_COUNT_CTOR(mozilla::dom::workers::WorkerGlobalScope);
for (int32 i = 0; i < SLOT_COUNT; i++) {
mSlots[i] = JSVAL_VOID;
}
}
~WorkerGlobalScope()
{
MOZ_COUNT_DTOR(mozilla::dom::workers::WorkerGlobalScope);
}
void
TraceInstance(JSTracer* aTrc)
{
for (int32 i = 0; i < SLOT_COUNT; i++) {
JS_CALL_VALUE_TRACER(aTrc, mSlots[i], "WorkerGlobalScope instance slot");
}
mWorker->TraceInternal(aTrc);
events::EventTarget::TraceInstance(aTrc);
}
void
FinalizeInstance(JSContext* aCx)
{
events::EventTarget::FinalizeInstance(aCx);
}
private:
static JSBool
GetEventListener(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
JS_ASSERT(JSID_TO_INT(aIdval) >= 0 && JSID_TO_INT(aIdval) < STRING_COUNT);
const char* name = sEventStrings[JSID_TO_INT(aIdval)];
WorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
return scope->GetEventListenerOnEventTarget(aCx, name + 2, aVp);
}
static JSBool
SetEventListener(JSContext* aCx, JSObject* aObj, jsid aIdval, JSBool aStrict,
jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
JS_ASSERT(JSID_TO_INT(aIdval) >= 0 && JSID_TO_INT(aIdval) < STRING_COUNT);
const char* name = sEventStrings[JSID_TO_INT(aIdval)];
WorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
return scope->SetEventListenerOnEventTarget(aCx, name + 2, aVp);
}
static WorkerGlobalScope*
GetInstancePrivate(JSContext* aCx, JSObject* aObj, const char* aFunctionName);
static JSBool
Construct(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
sClass.name);
return false;
}
static JSBool
GetSelf(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
if (!GetInstancePrivate(aCx, aObj, "self")) {
return false;
}
*aVp = OBJECT_TO_JSVAL(aObj);
return true;
}
static JSBool
GetLocation(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
WorkerGlobalScope* scope =
GetInstancePrivate(aCx, aObj, sProperties[SLOT_location].name);
if (!scope) {
return false;
}
if (JSVAL_IS_VOID(scope->mSlots[SLOT_location])) {
JSString* href, *protocol, *host, *hostname;
JSString* port, *pathname, *search, *hash;
WorkerPrivate::LocationInfo& info = scope->mWorker->GetLocationInfo();
#define COPY_STRING(_jsstr, _cstr) \
if (info. _cstr .IsEmpty()) { \
_jsstr = NULL; \
} \
else { \
if (!(_jsstr = JS_NewStringCopyN(aCx, info. _cstr .get(), \
info. _cstr .Length()))) { \
return false; \
} \
info. _cstr .Truncate(); \
}
COPY_STRING(href, mHref);
COPY_STRING(protocol, mProtocol);
COPY_STRING(host, mHost);
COPY_STRING(hostname, mHostname);
COPY_STRING(port, mPort);
COPY_STRING(pathname, mPathname);
COPY_STRING(search, mSearch);
COPY_STRING(hash, mHash);
#undef COPY_STRING
JSObject* location = location::Create(aCx, href, protocol, host, hostname,
port, pathname, search, hash);
if (!location) {
return false;
}
scope->mSlots[SLOT_location] = OBJECT_TO_JSVAL(location);
}
*aVp = scope->mSlots[SLOT_location];
return true;
}
static JSBool
UnwrapErrorEvent(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JS_ASSERT(JSVAL_IS_OBJECT(JS_CALLEE(aCx, aVp)));
JS_ASSERT(aArgc == 1);
JS_ASSERT(JSVAL_IS_OBJECT(JS_ARGV(aCx, aVp)[0]));
JSObject* wrapper = JSVAL_TO_OBJECT(JS_CALLEE(aCx, aVp));
JS_ASSERT(JS_ObjectIsFunction(aCx, wrapper));
jsval scope = js::GetFunctionNativeReserved(wrapper, SLOT_wrappedScope);
jsval listener = js::GetFunctionNativeReserved(wrapper, SLOT_wrappedFunction);
JS_ASSERT(JSVAL_IS_OBJECT(scope));
JSObject* event = JSVAL_TO_OBJECT(JS_ARGV(aCx, aVp)[0]);
jsval argv[3] = { JSVAL_VOID, JSVAL_VOID, JSVAL_VOID };
if (!JS_GetProperty(aCx, event, "message", &argv[0]) ||
!JS_GetProperty(aCx, event, "filename", &argv[1]) ||
!JS_GetProperty(aCx, event, "lineno", &argv[2])) {
return false;
}
jsval rval = JSVAL_VOID;
if (!JS_CallFunctionValue(aCx, JSVAL_TO_OBJECT(scope), listener,
ArrayLength(argv), argv, &rval)) {
JS_ReportPendingException(aCx);
return false;
}
if (JSVAL_IS_BOOLEAN(rval) && JSVAL_TO_BOOLEAN(rval) &&
!JS_CallFunctionName(aCx, event, "preventDefault", 0, NULL, &rval)) {
return false;
}
return true;
}
static JSBool
GetOnErrorListener(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
const char* name = sEventStrings[STRING_onerror];
WorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
jsval adaptor;
if (!scope->GetEventListenerOnEventTarget(aCx, name + 2, &adaptor)) {
return false;
}
if (JSVAL_IS_VOID(adaptor)) {
*aVp = JSVAL_NULL;
return true;
}
JS_ASSERT(JSVAL_IS_OBJECT(adaptor));
jsval listener = js::GetFunctionNativeReserved(JSVAL_TO_OBJECT(adaptor),
SLOT_wrappedFunction);
*aVp = listener;
return true;
}
static JSBool
SetOnErrorListener(JSContext* aCx, JSObject* aObj, jsid aIdval,
JSBool aStrict, jsval* aVp)
{
const char* name = sEventStrings[STRING_onerror];
WorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
JSFunction* adaptor = js::NewFunctionWithReserved(aCx, UnwrapErrorEvent, 1, 0,
JS_GetGlobalObject(aCx), "unwrap");
if (!adaptor) {
return false;
}
JSObject* listener = JS_GetFunctionObject(adaptor);
if (!listener) {
return false;
}
js::SetFunctionNativeReserved(listener, SLOT_wrappedScope,
OBJECT_TO_JSVAL(aObj));
js::SetFunctionNativeReserved(listener, SLOT_wrappedFunction, *aVp);
jsval val = OBJECT_TO_JSVAL(listener);
return scope->SetEventListenerOnEventTarget(aCx, name + 2, &val);
}
static JSBool
GetNavigator(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
WorkerGlobalScope* scope =
GetInstancePrivate(aCx, aObj, sProperties[SLOT_navigator].name);
if (!scope) {
return false;
}
if (JSVAL_IS_VOID(scope->mSlots[SLOT_navigator])) {
JSObject* navigator = navigator::Create(aCx);
if (!navigator) {
return false;
}
scope->mSlots[SLOT_navigator] = OBJECT_TO_JSVAL(navigator);
}
*aVp = scope->mSlots[SLOT_navigator];
return true;
}
static JSBool
Close(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[0].name);
if (!scope) {
return false;
}
return scope->mWorker->CloseInternal(aCx);
}
static JSBool
ImportScripts(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[1].name);
if (!scope) {
return false;
}
if (aArgc && !scriptloader::Load(aCx, aArgc, JS_ARGV(aCx, aVp))) {
return false;
}
return true;
}
static JSBool
SetTimeout(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[2].name);
if (!scope) {
return false;
}
jsval dummy;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &dummy)) {
return false;
}
return scope->mWorker->SetTimeout(aCx, aArgc, aVp, false);
}
static JSBool
ClearTimeout(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[3].name);
if (!scope) {
return false;
}
uint32_t id;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "u", &id)) {
return false;
}
return scope->mWorker->ClearTimeout(aCx, id);
}
static JSBool
SetInterval(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[4].name);
if (!scope) {
return false;
}
jsval dummy;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &dummy)) {
return false;
}
return scope->mWorker->SetTimeout(aCx, aArgc, aVp, true);
}
static JSBool
ClearInterval(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
WorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, sFunctions[5].name);
if (!scope) {
return false;
}
uint32_t id;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "u", &id)) {
return false;
}
return scope->mWorker->ClearTimeout(aCx, id);
}
static JSBool
Dump(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
if (!GetInstancePrivate(aCx, obj, sFunctions[6].name)) {
return false;
}
if (aArgc) {
JSString* str = JS_ValueToString(aCx, JS_ARGV(aCx, aVp)[0]);
if (!str) {
return false;
}
JSAutoByteString buffer(aCx, str);
if (!buffer) {
return false;
}
#ifdef ANDROID
__android_log_print(ANDROID_LOG_INFO, "Gecko", buffer.ptr());
#endif
fputs(buffer.ptr(), stdout);
fflush(stdout);
}
return true;
}
static JSBool
AtoB(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
if (!GetInstancePrivate(aCx, obj, sFunctions[7].name)) {
return false;
}
jsval string;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &string)) {
return false;
}
jsval result;
if (!xpc::Base64Decode(aCx, string, &result)) {
return false;
}
JS_SET_RVAL(aCx, aVp, result);
return true;
}
static JSBool
BtoA(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
if (!GetInstancePrivate(aCx, obj, sFunctions[8].name)) {
return false;
}
jsval binary;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &binary)) {
return false;
}
jsval result;
if (!xpc::Base64Encode(aCx, binary, &result)) {
return false;
}
JS_SET_RVAL(aCx, aVp, result);
return true;
}
};
JSClass WorkerGlobalScope::sClass = {
"WorkerGlobalScope",
0,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub
};
JSPropertySpec WorkerGlobalScope::sProperties[] = {
{ "location", SLOT_location, PROPERTY_FLAGS, GetLocation,
js_GetterOnlyPropertyStub },
{ sEventStrings[STRING_onerror], STRING_onerror, PROPERTY_FLAGS,
GetOnErrorListener, SetOnErrorListener },
{ sEventStrings[STRING_onclose], STRING_onclose, PROPERTY_FLAGS,
GetEventListener, SetEventListener },
{ "navigator", SLOT_navigator, PROPERTY_FLAGS, GetNavigator,
js_GetterOnlyPropertyStub },
{ "self", 0, PROPERTY_FLAGS, GetSelf, js_GetterOnlyPropertyStub },
{ 0, 0, 0, NULL, NULL }
};
JSFunctionSpec WorkerGlobalScope::sFunctions[] = {
JS_FN("close", Close, 0, FUNCTION_FLAGS),
JS_FN("importScripts", ImportScripts, 1, FUNCTION_FLAGS),
JS_FN("setTimeout", SetTimeout, 1, FUNCTION_FLAGS),
JS_FN("clearTimeout", ClearTimeout, 1, FUNCTION_FLAGS),
JS_FN("setInterval", SetInterval, 1, FUNCTION_FLAGS),
JS_FN("clearInterval", ClearTimeout, 1, FUNCTION_FLAGS),
JS_FN("dump", Dump, 1, FUNCTION_FLAGS),
JS_FN("atob", AtoB, 1, FUNCTION_FLAGS),
JS_FN("btoa", BtoA, 1, FUNCTION_FLAGS),
JS_FS_END
};
const char* const WorkerGlobalScope::sEventStrings[STRING_COUNT] = {
"onerror",
"onclose"
};
class DedicatedWorkerGlobalScope : public WorkerGlobalScope
{
static JSClass sClass;
static JSPropertySpec sProperties[];
static JSFunctionSpec sFunctions[];
enum
{
STRING_onmessage = 0,
STRING_COUNT
};
static const char* const sEventStrings[STRING_COUNT];
public:
static JSClass*
Class()
{
return &sClass;
}
static JSObject*
InitClass(JSContext* aCx, JSObject* aObj, JSObject* aParentProto)
{
return JS_InitClass(aCx, aObj, aParentProto, &sClass, Construct, 0,
sProperties, sFunctions, NULL, NULL);
}
static JSBool
InitPrivate(JSContext* aCx, JSObject* aObj, WorkerPrivate* aWorkerPrivate)
{
JS_ASSERT(JS_GetClass(aObj) == &sClass);
JS_ASSERT(!GetJSPrivateSafeish<DedicatedWorkerGlobalScope>(aObj));
DedicatedWorkerGlobalScope* priv =
new DedicatedWorkerGlobalScope(aWorkerPrivate);
SetJSPrivateSafeish(aObj, priv);
return true;
}
protected:
DedicatedWorkerGlobalScope(WorkerPrivate* aWorker)
: WorkerGlobalScope(aWorker)
{
MOZ_COUNT_CTOR(mozilla::dom::workers::DedicatedWorkerGlobalScope);
}
~DedicatedWorkerGlobalScope()
{
MOZ_COUNT_DTOR(mozilla::dom::workers::DedicatedWorkerGlobalScope);
}
using WorkerGlobalScope::TraceInstance;
using WorkerGlobalScope::FinalizeInstance;
private:
static JSBool
GetEventListener(JSContext* aCx, JSObject* aObj, jsid aIdval, jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
JS_ASSERT(JSID_TO_INT(aIdval) >= 0 && JSID_TO_INT(aIdval) < STRING_COUNT);
const char* name = sEventStrings[JSID_TO_INT(aIdval)];
DedicatedWorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
return scope->GetEventListenerOnEventTarget(aCx, name + 2, aVp);
}
static JSBool
SetEventListener(JSContext* aCx, JSObject* aObj, jsid aIdval, JSBool aStrict,
jsval* aVp)
{
JS_ASSERT(JSID_IS_INT(aIdval));
JS_ASSERT(JSID_TO_INT(aIdval) >= 0 && JSID_TO_INT(aIdval) < STRING_COUNT);
const char* name = sEventStrings[JSID_TO_INT(aIdval)];
DedicatedWorkerGlobalScope* scope = GetInstancePrivate(aCx, aObj, name);
if (!scope) {
return false;
}
return scope->SetEventListenerOnEventTarget(aCx, name + 2, aVp);
}
static DedicatedWorkerGlobalScope*
GetInstancePrivate(JSContext* aCx, JSObject* aObj, const char* aFunctionName)
{
JSClass* classPtr = JS_GetClass(aObj);
if (classPtr == &sClass) {
return GetJSPrivateSafeish<DedicatedWorkerGlobalScope>(aObj);
}
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
JSMSG_INCOMPATIBLE_PROTO, sClass.name, aFunctionName,
classPtr->name);
return NULL;
}
static JSBool
Construct(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
sClass.name);
return false;
}
static JSBool
Resolve(JSContext* aCx, JSObject* aObj, jsid aId, unsigned aFlags,
JSObject** aObjp)
{
JSBool resolved;
if (!JS_ResolveStandardClass(aCx, aObj, aId, &resolved)) {
return false;
}
*aObjp = resolved ? aObj : NULL;
return true;
}
static void
Finalize(JSContext* aCx, JSObject* aObj)
{
JS_ASSERT(JS_GetClass(aObj) == &sClass);
DedicatedWorkerGlobalScope* scope =
GetJSPrivateSafeish<DedicatedWorkerGlobalScope>(aObj);
if (scope) {
scope->FinalizeInstance(aCx);
delete scope;
}
}
static void
Trace(JSTracer* aTrc, JSObject* aObj)
{
JS_ASSERT(JS_GetClass(aObj) == &sClass);
DedicatedWorkerGlobalScope* scope =
GetJSPrivateSafeish<DedicatedWorkerGlobalScope>(aObj);
if (scope) {
scope->TraceInstance(aTrc);
}
}
static JSBool
PostMessage(JSContext* aCx, unsigned aArgc, jsval* aVp)
{
JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
if (!obj) {
return false;
}
const char*& name = sFunctions[0].name;
DedicatedWorkerGlobalScope* scope = GetInstancePrivate(aCx, obj, name);
if (!scope) {
return false;
}
jsval message;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &message)) {
return false;
}
return scope->mWorker->PostMessageToParent(aCx, message);
}
};
JSClass DedicatedWorkerGlobalScope::sClass = {
"DedicatedWorkerGlobalScope",
JSCLASS_GLOBAL_FLAGS | JSCLASS_HAS_PRIVATE | JSCLASS_IMPLEMENTS_BARRIERS | JSCLASS_NEW_RESOLVE,
JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
JS_EnumerateStub, reinterpret_cast<JSResolveOp>(Resolve), JS_ConvertStub,
Finalize, NULL, NULL, NULL, NULL, Trace
};
JSPropertySpec DedicatedWorkerGlobalScope::sProperties[] = {
{ sEventStrings[STRING_onmessage], STRING_onmessage, PROPERTY_FLAGS,
GetEventListener, SetEventListener },
{ 0, 0, 0, NULL, NULL }
};
JSFunctionSpec DedicatedWorkerGlobalScope::sFunctions[] = {
JS_FN("postMessage", PostMessage, 1, FUNCTION_FLAGS),
JS_FS_END
};
const char* const DedicatedWorkerGlobalScope::sEventStrings[STRING_COUNT] = {
"onmessage",
};
WorkerGlobalScope*
WorkerGlobalScope::GetInstancePrivate(JSContext* aCx, JSObject* aObj,
const char* aFunctionName)
{
JSClass* classPtr = JS_GetClass(aObj);
if (classPtr == &sClass || classPtr == DedicatedWorkerGlobalScope::Class()) {
return GetJSPrivateSafeish<WorkerGlobalScope>(aObj);
}
JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_INCOMPATIBLE_PROTO,
sClass.name, aFunctionName, classPtr->name);
return NULL;
}
} /* anonymous namespace */
BEGIN_WORKERS_NAMESPACE
JSObject*
CreateDedicatedWorkerGlobalScope(JSContext* aCx)
{
WorkerPrivate* worker = GetWorkerPrivateFromContext(aCx);
JS_ASSERT(worker);
JSObject* global =
JS_NewCompartmentAndGlobalObject(aCx, DedicatedWorkerGlobalScope::Class(),
GetWorkerPrincipal());
if (!global) {
return NULL;
}
JSAutoEnterCompartment ac;
if (!ac.enter(aCx, global)) {
return NULL;
}
// Make the private slots now so that all our instance checks succeed.
if (!DedicatedWorkerGlobalScope::InitPrivate(aCx, global, worker)) {
return NULL;
}
// Proto chain should be:
// global -> DedicatedWorkerGlobalScope
// -> WorkerGlobalScope
// -> EventTarget
// -> Object
JSObject* eventTargetProto =
events::InitEventTargetClass(aCx, global, nsnull);
if (!eventTargetProto) {
return NULL;
}
JSObject* scopeProto =
WorkerGlobalScope::InitClass(aCx, global, eventTargetProto);
if (!scopeProto) {
return NULL;
}
JSObject* dedicatedScopeProto =
DedicatedWorkerGlobalScope::InitClass(aCx, global, scopeProto);
if (!dedicatedScopeProto) {
return NULL;
}
if (!JS_SetPrototype(aCx, global, dedicatedScopeProto)) {
return NULL;
}
JSObject* workerProto = worker::InitClass(aCx, global, eventTargetProto,
false);
if (!workerProto) {
return NULL;
}
if (worker->IsChromeWorker()) {
if (!chromeworker::InitClass(aCx, global, workerProto, false) ||
!chromeworker::DefineChromeWorkerFunctions(aCx, global)) {
return NULL;
}
}
// Init other classes we care about.
if (!events::InitClasses(aCx, global, false) ||
!file::InitClasses(aCx, global) ||
!filereadersync::InitClass(aCx, global) ||
!exceptions::InitClasses(aCx, global) ||
!xhr::InitClasses(aCx, global, eventTargetProto) ||
!location::InitClass(aCx, global) ||
!navigator::InitClass(aCx, global)) {
return NULL;
}
if (!JS_DefineProfilingFunctions(aCx, global)) {
return NULL;
}
return global;
}
bool
ClassIsWorkerGlobalScope(JSClass* aClass)
{
return WorkerGlobalScope::Class() == aClass ||
DedicatedWorkerGlobalScope::Class() == aClass;
}
END_WORKERS_NAMESPACE