gecko-dev/js/ipc/JavaScriptChild.h

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1.4 KiB
C
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/* -*- 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/. */
#ifndef mozilla_jsipc_JavaScriptChild_h_
#define mozilla_jsipc_JavaScriptChild_h_
#include "JavaScriptBase.h"
#include "mozilla/jsipc/PJavaScriptChild.h"
namespace mozilla {
namespace jsipc {
class JavaScriptChild : public JavaScriptBase<PJavaScriptChild>
{
public:
JavaScriptChild() : strongReferenceObjIdMinimum_(0) {}
virtual ~JavaScriptChild();
bool init();
void trace(JSTracer* trc);
void updateWeakPointers();
void drop(JSObject* obj);
bool allowMessage(JSContext* cx) override { return true; }
protected:
virtual bool isParent() override { return false; }
virtual JSObject* scopeForTargetObjects() override;
mozilla::ipc::IPCResult RecvDropTemporaryStrongReferences(const uint64_t& upToObjId) override;
private:
bool fail(JSContext* cx, ReturnStatus* rs);
bool ok(ReturnStatus* rs);
// JavaScriptChild will keep strong references to JS objects that are
// referenced by the parent only if their ID is >=
// strongReferenceObjIdMinimum_.
uint64_t strongReferenceObjIdMinimum_;
};
} // namespace jsipc
} // namespace mozilla
#endif