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50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
// Copyright 2013 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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#ifndef GPU_COMMAND_BUFFER_MAILBOX_H_
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#define GPU_COMMAND_BUFFER_MAILBOX_H_
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#include <stdint.h>
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#include <string.h>
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#include "gpu/gpu_export.h"
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// From gl2/gl2ext.h.
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#ifndef GL_MAILBOX_SIZE_CHROMIUM
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#define GL_MAILBOX_SIZE_CHROMIUM 64
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#endif
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namespace gpu {
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struct GPU_EXPORT Mailbox {
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Mailbox();
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bool IsZero() const;
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void SetZero();
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void SetName(const int8_t* name);
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// Generate a unique unguessable mailbox name.
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static Mailbox Generate();
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// Verify that the mailbox was created through Mailbox::Generate. This only
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// works in Debug (always returns true in Release). This is not a secure
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// check, only to catch bugs where clients forgot to call Mailbox::Generate.
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bool Verify() const;
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int8_t name[GL_MAILBOX_SIZE_CHROMIUM];
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bool operator<(const Mailbox& other) const {
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return memcmp(this, &other, sizeof other) < 0;
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}
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bool operator==(const Mailbox& other) const {
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return memcmp(this, &other, sizeof other) == 0;
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}
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bool operator!=(const Mailbox& other) const {
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return !operator==(other);
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}
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};
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} // namespace gpu
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#endif // GPU_COMMAND_BUFFER_MAILBOX_H_
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