gecko/js/ipc/JavaScriptParent.cpp

82 lines
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=4 sw=4 et tw=80:
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "JavaScriptParent.h"
#include "mozilla/dom/ContentParent.h"
#include "nsJSUtils.h"
#include "jsfriendapi.h"
#include "jsproxy.h"
#include "jswrapper.h"
#include "HeapAPI.h"
#include "xpcprivate.h"
#include "mozilla/Casting.h"
using namespace js;
using namespace JS;
using namespace mozilla;
using namespace mozilla::jsipc;
using namespace mozilla::dom;
static void
TraceParent(JSTracer *trc, void *data)
{
static_cast<JavaScriptParent *>(data)->trace(trc);
}
static void
FixupParentAfterMovingGC(JSRuntime *rt, void *data)
{
static_cast<JavaScriptParent *>(data)->fixupAfterMovingGC();
}
JavaScriptParent::JavaScriptParent(JSRuntime *rt)
: JavaScriptShared(rt),
JavaScriptBase<PJavaScriptParent>(rt)
{
}
JavaScriptParent::~JavaScriptParent()
{
JS_RemoveExtraGCRootsTracer(rt_, TraceParent, this);
JS_RemoveMovingGCCallback(rt_, FixupParentAfterMovingGC);
}
bool
JavaScriptParent::init()
{
if (!WrapperOwner::init())
return false;
JS_AddExtraGCRootsTracer(rt_, TraceParent, this);
JS_AddMovingGCCallback(rt_, FixupParentAfterMovingGC, this);
return true;
}
void
JavaScriptParent::trace(JSTracer *trc)
{
if (active())
objects_.trace(trc);
}
JSObject *
JavaScriptParent::defaultScope()
{
return xpc::UnprivilegedJunkScope();
}
mozilla::ipc::IProtocol*
JavaScriptParent::CloneProtocol(Channel* aChannel, ProtocolCloneContext* aCtx)
{
ContentParent *contentParent = aCtx->GetContentParent();
nsAutoPtr<PJavaScriptParent> actor(contentParent->AllocPJavaScriptParent());
if (!actor || !contentParent->RecvPJavaScriptConstructor(actor)) {
return nullptr;
}
return actor.forget();
}