gecko-dev/js/ipc/JavaScriptChild.cpp

75 lines
1.8 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 "JavaScriptChild.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/ipc/MessageChannel.h"
#include "nsContentUtils.h"
#include "xpcprivate.h"
#include "jsfriendapi.h"
#include "nsCxPusher.h"
#include "AccessCheck.h"
using namespace JS;
using namespace mozilla;
using namespace mozilla::jsipc;
using mozilla::AutoSafeJSContext;
#ifdef NIGHTLY_BUILD
static void
UrgentMessageCheck(JSContext *cx, HandleScript script)
{
// We're only allowed to enter chrome JS code while processing urgent
// messages.
if (ipc::ProcessingUrgentMessages())
MOZ_RELEASE_ASSERT(xpc::AccessCheck::isChrome(js::GetContextCompartment(cx)));
}
#endif
static void
FinalizeChild(JSFreeOp *fop, JSFinalizeStatus status, bool isCompartment, void *data)
{
if (status == JSFINALIZE_GROUP_START) {
static_cast<JavaScriptChild *>(data)->finalize(fop);
}
}
JavaScriptChild::JavaScriptChild(JSRuntime *rt)
: JavaScriptShared(rt),
JavaScriptBase<PJavaScriptChild>(rt)
{
#ifdef NIGHTLY_BUILD
js::SetAssertOnScriptEntryHook(rt, UrgentMessageCheck);
#endif
}
JavaScriptChild::~JavaScriptChild()
{
JS_RemoveFinalizeCallback(rt_, FinalizeChild);
}
bool
JavaScriptChild::init()
{
if (!WrapperOwner::init())
return false;
if (!WrapperAnswer::init())
return false;
JS_AddFinalizeCallback(rt_, FinalizeChild, this);
return true;
}
void
JavaScriptChild::finalize(JSFreeOp *fop)
{
objects_.finalize(fop);
objectIds_.finalize(fop);
}