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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/memory/shared_memory_handle.h"
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#include <zircon/syscalls.h>
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#include "base/logging.h"
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#include "base/unguessable_token.h"
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namespace base {
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SharedMemoryHandle::SharedMemoryHandle() {}
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SharedMemoryHandle::SharedMemoryHandle(zx_handle_t h,
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size_t size,
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const base::UnguessableToken& guid)
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: handle_(h), guid_(guid), size_(size) {}
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void SharedMemoryHandle::Close() const {
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DCHECK(handle_ != ZX_HANDLE_INVALID);
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zx_handle_close(handle_);
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}
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bool SharedMemoryHandle::IsValid() const {
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return handle_ != ZX_HANDLE_INVALID;
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}
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SharedMemoryHandle SharedMemoryHandle::Duplicate() const {
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zx_handle_t duped_handle;
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zx_status_t status =
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zx_handle_duplicate(handle_, ZX_RIGHT_SAME_RIGHTS, &duped_handle);
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if (status != ZX_OK)
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return SharedMemoryHandle();
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SharedMemoryHandle handle(duped_handle, GetSize(), GetGUID());
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handle.SetOwnershipPassesToIPC(true);
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return handle;
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}
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zx_handle_t SharedMemoryHandle::GetHandle() const {
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return handle_;
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}
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void SharedMemoryHandle::SetOwnershipPassesToIPC(bool ownership_passes) {
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ownership_passes_to_ipc_ = ownership_passes;
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}
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bool SharedMemoryHandle::OwnershipPassesToIPC() const {
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return ownership_passes_to_ipc_;
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}
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} // namespace base
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