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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_RESOURCE_ID_TRAITS_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_RESOURCE_ID_TRAITS_H_
#include <limits>
#include "components/viz/common/resources/resource_id.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier.h"
#include "third_party/blink/renderer/platform/wtf/hash_functions.h"
#include "third_party/blink/renderer/platform/wtf/hash_traits.h"
namespace WTF {
template <>
struct CrossThreadCopier<viz::ResourceId>
: public CrossThreadCopierPassThrough<viz::ResourceId> {};
template <>
struct HashTraits<viz::ResourceId> : GenericHashTraits<viz::ResourceId> {
static uint32_t GetHash(const viz::ResourceId& id) {
return WTF::GetHash(id.GetUnsafeValue());
}
static const bool kEmptyValueIsZero = false;
static viz::ResourceId EmptyValue() {
return viz::ResourceId(std::numeric_limits<uint32_t>::max());
}
static viz::ResourceId DeletedValue() {
return viz::ResourceId(std::numeric_limits<uint32_t>::max() - 1);
}
};
} // namespace WTF
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_RESOURCE_ID_TRAITS_H_
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