1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/glue/SharedMemoryBasic_android.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,74 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * vim: sw=2 ts=8 et :
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#ifndef mozilla_ipc_SharedMemoryBasic_android_h
1.12 +#define mozilla_ipc_SharedMemoryBasic_android_h
1.13 +
1.14 +#include "base/file_descriptor_posix.h"
1.15 +
1.16 +#include "SharedMemory.h"
1.17 +
1.18 +//
1.19 +// This is a low-level wrapper around platform shared memory. Don't
1.20 +// use it directly; use Shmem allocated through IPDL interfaces.
1.21 +//
1.22 +
1.23 +namespace mozilla {
1.24 +namespace ipc {
1.25 +
1.26 +class SharedMemoryBasic : public SharedMemory
1.27 +{
1.28 +public:
1.29 + typedef base::FileDescriptor Handle;
1.30 +
1.31 + SharedMemoryBasic();
1.32 +
1.33 + SharedMemoryBasic(const Handle& aHandle);
1.34 +
1.35 + virtual ~SharedMemoryBasic();
1.36 +
1.37 + virtual bool Create(size_t aNbytes) MOZ_OVERRIDE;
1.38 +
1.39 + virtual bool Map(size_t nBytes) MOZ_OVERRIDE;
1.40 +
1.41 + virtual void* memory() const MOZ_OVERRIDE
1.42 + {
1.43 + return mMemory;
1.44 + }
1.45 +
1.46 + virtual SharedMemoryType Type() const MOZ_OVERRIDE
1.47 + {
1.48 + return TYPE_BASIC;
1.49 + }
1.50 +
1.51 + static Handle NULLHandle()
1.52 + {
1.53 + return Handle();
1.54 + }
1.55 +
1.56 + static bool IsHandleValid(const Handle &aHandle)
1.57 + {
1.58 + return aHandle.fd >= 0;
1.59 + }
1.60 +
1.61 + bool ShareToProcess(base::ProcessHandle aProcess,
1.62 + Handle* aNewHandle);
1.63 +
1.64 +private:
1.65 + void Unmap();
1.66 + void Destroy();
1.67 +
1.68 + // The /dev/ashmem fd we allocate.
1.69 + int mShmFd;
1.70 + // Pointer to mapped region, null if unmapped.
1.71 + void *mMemory;
1.72 +};
1.73 +
1.74 +} // namespace ipc
1.75 +} // namespace mozilla
1.76 +
1.77 +#endif // ifndef mozilla_ipc_SharedMemoryBasic_android_h
