forked from mirrors/gecko-dev
112 lines
2.3 KiB
C++
112 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=80:
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "JavaScriptChild.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "nsContentUtils.h"
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#include "xpcprivate.h"
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#include "jsfriendapi.h"
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#include "nsCxPusher.h"
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using namespace JS;
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using namespace mozilla;
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using namespace mozilla::jsipc;
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using mozilla::AutoSafeJSContext;
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JavaScriptChild::JavaScriptChild(JSRuntime *rt)
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: lastId_(0),
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rt_(rt)
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{
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}
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static void
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Trace(JSTracer *trc, void *data)
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{
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reinterpret_cast<JavaScriptChild *>(data)->trace(trc);
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}
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JavaScriptChild::~JavaScriptChild()
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{
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JS_RemoveExtraGCRootsTracer(rt_, Trace, this);
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}
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void
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JavaScriptChild::trace(JSTracer *trc)
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{
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objects_.trace(trc);
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cpows_.trace(trc);
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ids_.trace(trc);
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}
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bool
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JavaScriptChild::init()
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{
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if (!WrapperOwner::init())
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return false;
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if (!WrapperAnswer::init())
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return false;
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if (!ids_.init())
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return false;
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JS_AddExtraGCRootsTracer(rt_, Trace, this);
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return true;
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}
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bool
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JavaScriptChild::RecvDropObject(const ObjectId &objId)
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{
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JSObject *obj = findObjectById(objId);
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if (obj) {
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ids_.remove(obj);
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objects_.remove(objId);
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}
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return true;
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}
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bool
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JavaScriptChild::toObjectVariant(JSContext *cx, JSObject *obj, ObjectVariant *objVarp)
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{
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JS_ASSERT(obj);
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ObjectId id = ids_.find(obj);
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if (id) {
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*objVarp = RemoteObject(id);
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return true;
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}
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id = ++lastId_;
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if (id > MAX_CPOW_IDS) {
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JS_ReportError(cx, "CPOW id limit reached");
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return false;
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}
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id <<= OBJECT_EXTRA_BITS;
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if (JS_ObjectIsCallable(cx, obj))
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id |= OBJECT_IS_CALLABLE;
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if (!objects_.add(id, obj))
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return false;
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if (!ids_.add(cx, obj, id))
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return false;
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*objVarp = RemoteObject(id);
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return true;
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}
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JSObject *
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JavaScriptChild::fromObjectVariant(JSContext *cx, ObjectVariant objVar)
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{
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JS_ASSERT(objVar.type() == ObjectVariant::TLocalObject);
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ObjectId id = objVar.get_LocalObject().id();
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JSObject *obj = findObjectById(id);
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MOZ_ASSERT(obj);
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return obj;
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}
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