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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/startup_metric_utils/renderer/startup_metric_utils.h"
#include <type_traits>
#include "base/check.h"
#include "base/command_line.h"
#include "base/location.h"
#include "base/metrics/histogram_functions.h"
#include "components/startup_metric_utils/common/startup_metric_utils.h"
namespace startup_metric_utils {
RendererStartupMetricRecorder& GetRenderer() {
// If this ceases to be true, Get{Common,Renderer,Browser} need to be changed
// to use base::NoDestructor.
static_assert(
std::is_trivially_destructible<RendererStartupMetricRecorder>::value,
"Startup metric recorder classes must be trivially destructible.");
// The GPU service gets created in browser tests, where we are not in the gpu
// process, and so gating by --type=gpu-process being present on the command
// line doesn't make sense.
static RendererStartupMetricRecorder instance;
return instance;
}
void RendererStartupMetricRecorder::RecordRunLoopStart(base::TimeTicks ticks) {
if (GetCommon().process_creation_ticks_.is_null() ||
GetCommon().application_start_ticks_.is_null() ||
GetCommon().chrome_main_entry_ticks_.is_null()) {
// This occurs in tests, content_shell.exe runs a renderer through another
// entry point which does not record startup metrics.
return;
}
GetCommon().AssertFirstCallInSession(FROM_HERE);
run_loop_start_ticks_ = ticks;
GetCommon().EmitHistogramWithTraceEvent(
&base::UmaHistogramMediumTimes,
"Startup.Renderer.LoadTime.ProcessCreationToRendererStartRunLoop",
GetCommon().process_creation_ticks_, run_loop_start_ticks_);
GetCommon().EmitHistogramWithTraceEvent(
&base::UmaHistogramMediumTimes,
"Startup.Renderer.LoadTime.ApplicationStartToRendererStartRunLoop",
GetCommon().application_start_ticks_, run_loop_start_ticks_);
GetCommon().EmitHistogramWithTraceEvent(
&base::UmaHistogramMediumTimes,
"Startup.Renderer.LoadTime.ChromeMainToRendererStartRunLoop",
GetCommon().chrome_main_entry_ticks_, run_loop_start_ticks_);
if (!GetCommon().preread_end_ticks_.is_null() &&
!GetCommon().preread_begin_ticks_.is_null()) {
GetCommon().EmitHistogramWithTraceEvent(
&base::UmaHistogramLongTimes, "Startup.Renderer.LoadTime.PreReadFile",
GetCommon().preread_begin_ticks_, GetCommon().preread_end_ticks_);
}
}
} // namespace startup_metric_utils
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