Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(2852)

Unified Diff: base/debug/trace_event_system_stats_monitor.cc

Issue 885443002: Roll Chrome into Mojo. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Rebase to ToT mojo Created 5 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
Index: base/debug/trace_event_system_stats_monitor.cc
diff --git a/base/debug/trace_event_system_stats_monitor.cc b/base/debug/trace_event_system_stats_monitor.cc
deleted file mode 100644
index 9cbefd8d6cc14af406ce08d8ed33d3b20ac904f9..0000000000000000000000000000000000000000
--- a/base/debug/trace_event_system_stats_monitor.cc
+++ /dev/null
@@ -1,133 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/debug/trace_event_system_stats_monitor.h"
-
-#include "base/debug/leak_annotations.h"
-#include "base/debug/trace_event.h"
-#include "base/json/json_writer.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-#include "base/thread_task_runner_handle.h"
-#include "base/threading/thread_local_storage.h"
-
-namespace base {
-namespace debug {
-
-namespace {
-
-/////////////////////////////////////////////////////////////////////////////
-// Holds profiled system stats until the tracing system needs to serialize it.
-class SystemStatsHolder : public base::debug::ConvertableToTraceFormat {
- public:
- SystemStatsHolder() { }
-
- // Fills system_metrics_ with profiled system memory and disk stats.
- // Uses the previous stats to compute rates if this is not the first profile.
- void GetSystemProfilingStats();
-
- // base::debug::ConvertableToTraceFormat overrides:
- void AppendAsTraceFormat(std::string* out) const override {
- AppendSystemProfileAsTraceFormat(system_stats_, out);
- }
-
- private:
- ~SystemStatsHolder() override {}
-
- SystemMetrics system_stats_;
-
- DISALLOW_COPY_AND_ASSIGN(SystemStatsHolder);
-};
-
-void SystemStatsHolder::GetSystemProfilingStats() {
- system_stats_ = SystemMetrics::Sample();
-}
-
-} // namespace
-
-//////////////////////////////////////////////////////////////////////////////
-
-TraceEventSystemStatsMonitor::TraceEventSystemStatsMonitor(
- scoped_refptr<SingleThreadTaskRunner> task_runner)
- : task_runner_(task_runner),
- weak_factory_(this) {
- // Force the "system_stats" category to show up in the trace viewer.
- TraceLog::GetCategoryGroupEnabled(TRACE_DISABLED_BY_DEFAULT("system_stats"));
-
- // Allow this to be instantiated on unsupported platforms, but don't run.
- TraceLog::GetInstance()->AddEnabledStateObserver(this);
-}
-
-TraceEventSystemStatsMonitor::~TraceEventSystemStatsMonitor() {
- if (dump_timer_.IsRunning())
- StopProfiling();
- TraceLog::GetInstance()->RemoveEnabledStateObserver(this);
-}
-
-void TraceEventSystemStatsMonitor::OnTraceLogEnabled() {
- // Check to see if system tracing is enabled.
- bool enabled;
-
- TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT(
- "system_stats"), &enabled);
- if (!enabled)
- return;
- task_runner_->PostTask(
- FROM_HERE,
- base::Bind(&TraceEventSystemStatsMonitor::StartProfiling,
- weak_factory_.GetWeakPtr()));
-}
-
-void TraceEventSystemStatsMonitor::OnTraceLogDisabled() {
- task_runner_->PostTask(
- FROM_HERE,
- base::Bind(&TraceEventSystemStatsMonitor::StopProfiling,
- weak_factory_.GetWeakPtr()));
-}
-
-void TraceEventSystemStatsMonitor::StartProfiling() {
- // Watch for the tracing framework sending enabling more than once.
- if (dump_timer_.IsRunning())
- return;
-
- dump_timer_.Start(FROM_HERE,
- TimeDelta::FromMilliseconds(TraceEventSystemStatsMonitor::
- kSamplingIntervalMilliseconds),
- base::Bind(&TraceEventSystemStatsMonitor::
- DumpSystemStats,
- weak_factory_.GetWeakPtr()));
-}
-
-// If system tracing is enabled, dumps a profile to the tracing system.
-void TraceEventSystemStatsMonitor::DumpSystemStats() {
- scoped_refptr<SystemStatsHolder> dump_holder = new SystemStatsHolder();
- dump_holder->GetSystemProfilingStats();
-
- TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(
- TRACE_DISABLED_BY_DEFAULT("system_stats"),
- "base::TraceEventSystemStatsMonitor::SystemStats",
- this,
- scoped_refptr<ConvertableToTraceFormat>(dump_holder));
-}
-
-void TraceEventSystemStatsMonitor::StopProfiling() {
- dump_timer_.Stop();
-}
-
-bool TraceEventSystemStatsMonitor::IsTimerRunningForTest() const {
- return dump_timer_.IsRunning();
-}
-
-void AppendSystemProfileAsTraceFormat(const SystemMetrics& system_metrics,
- std::string* output) {
- std::string tmp;
- base::JSONWriter::Write(system_metrics.ToValue().get(), &tmp);
- *output += tmp;
-}
-
-} // namespace debug
-} // namespace base
« no previous file with comments | « base/debug/trace_event_system_stats_monitor.h ('k') | base/debug/trace_event_system_stats_monitor_unittest.cc » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698