peak_gpu_memory_callback.cc | Explore in Territory

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif

#include "content/common/peak_gpu_memory_callback.h"

#include <memory>

#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/location.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/strcat.h"

namespace content {

namespace {

// These count values should be recalculated in case of changes to the number
// of values in their respective enums.
constexpr int kUsageTypeCount = …;
constexpr int kAllocationSourceTypeCount = …;
constexpr int kAllocationSourceHistogramIndex = …;

// Histogram values based on MEMORY_METRICS_HISTOGRAM_MB, allowing this to match
// Memory.Gpu.PrivateMemoryFootprint. Previously this was reported in KB, with a
// maximum of 500 MB. However that maximum is too low for Mac.
constexpr int kMemoryHistogramMin = …;
constexpr int kMemoryHistogramMax = …;
constexpr int kMemoryHistogramBucketCount = …;

constexpr const char* GetUsageName(input::PeakGpuMemoryTracker::Usage usage) { … }

constexpr const char* GetAllocationSourceName(
    gpu::GpuPeakMemoryAllocationSource source) { … }

std::string GetPeakMemoryUsageUMAName(
    input::PeakGpuMemoryTracker::Usage usage) { … }

std::string GetPeakMemoryAllocationSourceUMAName(
    input::PeakGpuMemoryTracker::Usage usage,
    gpu::GpuPeakMemoryAllocationSource source) { … }

}  // namespace

// Callback provided to the GpuService, which will be notified of the
// |peak_memory| used. This will then report that to UMA Histograms, for the
// requested |usage|. Some tests may provide an optional |testing_callback| in
// order to sync tests with the work done here on the UI thread.
void PeakGpuMemoryCallback(
    input::PeakGpuMemoryTracker::Usage usage,
    base::OnceClosure testing_callback,
    const uint64_t peak_memory,
    const base::flat_map<gpu::GpuPeakMemoryAllocationSource, uint64_t>&
        allocation_per_source) { … }

}  // namespace content
chromium/content/common/peak_gpu_memory_callback.cc
