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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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_SharedMemoryBasic_chromium_h
+#define mozilla_ipc_SharedMemoryBasic_chromium_h
+
+#include "base/shared_memory.h"
+#include "SharedMemory.h"
+
+#include "nsDebug.h"
+
+//
+// This is a low-level wrapper around platform shared memory. Don't
+// use it directly; use Shmem allocated through IPDL interfaces.
+//
+
+namespace mozilla {
+namespace ipc {
+
+class SharedMemoryBasic final : public SharedMemoryCommon<base::SharedMemoryHandle>
+{
+public:
+ SharedMemoryBasic()
+ {
+ }
+
+ virtual bool SetHandle(const Handle& aHandle) override {
+ return mSharedMemory.SetHandle(aHandle, false);
+ }
+
+ virtual bool Create(size_t aNbytes) override
+ {
+ bool ok = mSharedMemory.Create("", false, false, aNbytes);
+ if (ok) {
+ Created(aNbytes);
+ }
+ return ok;
+ }
+
+ virtual bool Map(size_t nBytes) override
+ {
+ bool ok = mSharedMemory.Map(nBytes);
+ if (ok) {
+ Mapped(nBytes);
+ }
+ return ok;
+ }
+
+ virtual void CloseHandle() override
+ {
+ mSharedMemory.Close(false);
+ }
+
+ virtual void* memory() const override
+ {
+ return mSharedMemory.memory();
+ }
+
+ virtual SharedMemoryType Type() const override
+ {
+ return TYPE_BASIC;
+ }
+
+ static Handle NULLHandle()
+ {
+ return base::SharedMemory::NULLHandle();
+ }
+
+ virtual bool IsHandleValid(const Handle &aHandle) const override
+ {
+ return base::SharedMemory::IsHandleValid(aHandle);
+ }
+
+ virtual bool ShareToProcess(base::ProcessId aProcessId,
+ Handle* new_handle) override
+ {
+ base::SharedMemoryHandle handle;
+ bool ret = mSharedMemory.ShareToProcess(aProcessId, &handle);
+ if (ret)
+ *new_handle = handle;
+ return ret;
+ }
+
+private:
+ ~SharedMemoryBasic()
+ {
+ }
+
+ base::SharedMemory mSharedMemory;
+};
+
+} // namespace ipc
+} // namespace mozilla
+
+
+#endif // ifndef mozilla_ipc_SharedMemoryBasic_chromium_h