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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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
#ifndef include_dom_media_ipc_MediaActorUtils_h
#define include_dom_media_ipc_MediaActorUtils_h
#include "nsISupportsImpl.h"
// This refcounting specialization allows the implementing class to supply a
// method to call when there is only one reference left. This allows for media
// IPDL actors to be refcounted normally, and when the last reference is the
// IPDL actor, we can choose to self destroy.
#define MEDIA_INLINE_DECL_THREADSAFE_REFCOUNTING_META(_class, _decl, _destroy, \
_last_ref, ...) \
public: \
_decl(MozExternalRefCountType) AddRef(void) __VA_ARGS__ { \
MOZ_ASSERT_TYPE_OK_FOR_REFCOUNTING(_class) \
MOZ_ASSERT(int32_t(mRefCnt) >= 0, "illegal refcnt"); \
nsrefcnt count = ++mRefCnt; \
NS_LOG_ADDREF(this, count, #_class, sizeof(*this)); \
return (nsrefcnt)count; \
} \
_decl(MozExternalRefCountType) Release(void) __VA_ARGS__ { \
MOZ_ASSERT(int32_t(mRefCnt) > 0, "dup release"); \
nsrefcnt count = --mRefCnt; \
NS_LOG_RELEASE(this, count, #_class); \
if (count == 0) { \
_destroy; \
return 0; \
} \
if (count == 1) { \
_last_ref; \
} \
return count; \
} \
using HasThreadSafeRefCnt = std::true_type; \
\
protected: \
::mozilla::ThreadSafeAutoRefCnt mRefCnt; \
\
public:
#endif // include_dom_media_ipc_MediaActorUtils_h