1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/ipc/glue/SharedMemoryBasic_chromium.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,94 @@
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_chromium_h
1.12 +#define mozilla_ipc_SharedMemoryBasic_chromium_h
1.13 +
1.14 +#include "base/shared_memory.h"
1.15 +#include "SharedMemory.h"
1.16 +
1.17 +#include "nsDebug.h"
1.18 +
1.19 +//
1.20 +// This is a low-level wrapper around platform shared memory. Don't
1.21 +// use it directly; use Shmem allocated through IPDL interfaces.
1.22 +//
1.23 +
1.24 +namespace mozilla {
1.25 +namespace ipc {
1.26 +
1.27 +class SharedMemoryBasic : public SharedMemory
1.28 +{
1.29 +public:
1.30 + typedef base::SharedMemoryHandle Handle;
1.31 +
1.32 + SharedMemoryBasic()
1.33 + {
1.34 + }
1.35 +
1.36 + SharedMemoryBasic(const Handle& aHandle)
1.37 + : mSharedMemory(aHandle, false)
1.38 + {
1.39 + }
1.40 +
1.41 + virtual bool Create(size_t aNbytes) MOZ_OVERRIDE
1.42 + {
1.43 + bool ok = mSharedMemory.Create("", false, false, aNbytes);
1.44 + if (ok) {
1.45 + Created(aNbytes);
1.46 + }
1.47 + return ok;
1.48 + }
1.49 +
1.50 + virtual bool Map(size_t nBytes) MOZ_OVERRIDE
1.51 + {
1.52 + bool ok = mSharedMemory.Map(nBytes);
1.53 + if (ok) {
1.54 + Mapped(nBytes);
1.55 + }
1.56 + return ok;
1.57 + }
1.58 +
1.59 + virtual void* memory() const MOZ_OVERRIDE
1.60 + {
1.61 + return mSharedMemory.memory();
1.62 + }
1.63 +
1.64 + virtual SharedMemoryType Type() const MOZ_OVERRIDE
1.65 + {
1.66 + return TYPE_BASIC;
1.67 + }
1.68 +
1.69 + static Handle NULLHandle()
1.70 + {
1.71 + return base::SharedMemory::NULLHandle();
1.72 + }
1.73 +
1.74 + static bool IsHandleValid(const Handle &aHandle)
1.75 + {
1.76 + return base::SharedMemory::IsHandleValid(aHandle);
1.77 + }
1.78 +
1.79 + bool ShareToProcess(base::ProcessHandle process,
1.80 + Handle* new_handle)
1.81 + {
1.82 + base::SharedMemoryHandle handle;
1.83 + bool ret = mSharedMemory.ShareToProcess(process, &handle);
1.84 + if (ret)
1.85 + *new_handle = handle;
1.86 + return ret;
1.87 + }
1.88 +
1.89 +private:
1.90 + base::SharedMemory mSharedMemory;
1.91 +};
1.92 +
1.93 +} // namespace ipc
1.94 +} // namespace mozilla
1.95 +
1.96 +
1.97 +#endif // ifndef mozilla_ipc_SharedMemoryBasic_chromium_h
