chromium/third_party/vulkan-validation-layers/src/layers/thread_tracker/thread_safety_validation.h

/* Copyright (c) 2015-2024 The Khronos Group Inc.
 * Copyright (c) 2015-2024 Valve Corporation
 * Copyright (c) 2015-2024 LunarG, Inc.
 * Copyright (c) 2015-2024 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <atomic>
#include <chrono>
#include <mutex>
#include <string>
#include <thread>
#include <vector>
#include "utils/vk_layer_utils.h"

VK_DEFINE_NON_DISPATCHABLE_HANDLE(…) …
// The following line must match the vulkan_core.h condition guarding VK_DEFINE_NON_DISPATCHABLE_HANDLE
#if defined(__LP64__) || defined(_WIN64) || (defined(__x86_64__) && !defined(__ILP32__)) || defined(_M_X64) || defined(__ia64) || \
    defined(_M_IA64) || defined(__aarch64__) || defined(__powerpc64__)
// If pointers are 64-bit, then there can be separate counters for each
// NONDISPATCHABLE_HANDLE type.  Otherwise they are all typedef uint64_t.
#define DISTINCT_NONDISPATCHABLE_HANDLES
// Make sure we catch any disagreement between us and the vulkan definition
static_assert …;
#else
// Make sure we catch any disagreement between us and the vulkan definition
static_assert(std::is_same<uint64_t, DISTINCT_NONDISPATCHABLE_PHONY_HANDLE>::value,
              "Mismatched non-dispatchable handle handle, expected uint64_t.");
#endif

// Modern CPUs have 64 or 128-byte cache line sizes (Apple M1 has 128-byte cache line size).
// Use alignment of 64 bytes (instead of 128) to prioritize using less memory and decrease
// cache pressure.
inline constexpr size_t kObjectUserDataAlignment = …;
static_assert …;  // sanity check on the build machine

class alignas(kObjectUserDataAlignment) ObjectUseData { … };

template <typename T>
class counter { … };

class ThreadSafety : public ValidationObject { … };