RefCountedShmem.h (1320B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #ifndef MOZILLA_LAYERS_REFCOUNTED_SHMEM_H 8 #define MOZILLA_LAYERS_REFCOUNTED_SHMEM_H 9 10 #include "mozilla/ipc/Shmem.h" 11 #include "chrome/common/ipc_message_utils.h" 12 13 namespace mozilla { 14 namespace ipc { 15 class IProtocol; 16 } 17 18 namespace layers { 19 20 // This class is IPDL-defined 21 class RefCountedShmem; 22 23 // This just implement the methods externally. 24 class RefCountedShm { 25 public: 26 static uint8_t* GetBytes(const RefCountedShmem& aShm); 27 28 static size_t GetSize(const RefCountedShmem& aShm); 29 30 static bool IsValid(const RefCountedShmem& aShm); 31 32 static bool Alloc(mozilla::ipc::IProtocol* aAllocator, size_t aSize, 33 RefCountedShmem& aShm); 34 35 static void Dealloc(mozilla::ipc::IProtocol* aAllocator, 36 RefCountedShmem& aShm); 37 38 static int32_t GetReferenceCount(const RefCountedShmem& aShm); 39 40 static int32_t AddRef(const RefCountedShmem& aShm); 41 42 static int32_t Release(const RefCountedShmem& aShm); 43 }; 44 45 } // namespace layers 46 } // namespace mozilla 47 48 #endif