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chromium / chromium / src / 1190510c561a7158d76ed1232553b18502a67584 / . / components / memory_pressure / multi_source_memory_pressure_monitor.cc
blob: 3b94a779ce9678af9d8ecf574d8f336847b0df43 [file] [log] [blame]
Avi Drissman8ba1bad2022-09-13 19:22:36[diff] [blame]1// Copyright 2019 The Chromium Authors
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
Albert J. Wong23183a12021-08-13 00:23:35[diff] [blame]5#include "components/memory_pressure/multi_source_memory_pressure_monitor.h"
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]6
Hans Wennborgc3cffa62020-04-27 10:09:12[diff] [blame]7#include "base/check_op.h"
Avi Drissman12be0312023-01-11 09:16:09[diff] [blame]8#include "base/functional/bind.h"
Sebastien Marchand6c5354e2020-02-07 19:38:25[diff] [blame]9#include "base/metrics/histogram_functions.h"
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]10#include "base/metrics/histogram_macros.h"
Sebastien Marchand6c5354e2020-02-07 19:38:25[diff] [blame]11#include "base/time/time.h"
Eric Secklerf6c544f2020-06-02 10:49:21[diff] [blame]12#include "base/trace_event/base_tracing.h"
ssid8734ea72021-03-17 18:43:58[diff] [blame]13#include "base/tracing_buildflags.h"
Albert J. Wong23183a12021-08-13 00:23:35[diff] [blame]14#include "components/memory_pressure/system_memory_pressure_evaluator.h"
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]15
ssid8734ea72021-03-17 18:43:58[diff] [blame]16#if BUILDFLAG(ENABLE_BASE_TRACING)
17#include "base/trace_event/memory_pressure_level_proto.h" // no-presubmit-check
18#endif
19
Albert J. Wong23183a12021-08-13 00:23:35[diff] [blame]20namespace memory_pressure {
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]21
22MultiSourceMemoryPressureMonitor::MultiSourceMemoryPressureMonitor()
23 : current_pressure_level_(
24 base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE),
25 dispatch_callback_(base::BindRepeating(
26 &base::MemoryPressureListener::NotifyMemoryPressure)),
Sebastien Marchandfcd25482021-05-03 16:19:46[diff] [blame]27 aggregator_(this),
28 level_reporter_(current_pressure_level_) {}
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]29
Jenny Wong6592dd42019-09-26 17:25:07[diff] [blame]30MultiSourceMemoryPressureMonitor::~MultiSourceMemoryPressureMonitor() {
31 // Destroy system evaluator early while the remaining members of this class
32 // still exist. MultiSourceMemoryPressureMonitor implements
33 // MemoryPressureVoteAggregator::Delegate, and
34 // delegate_->OnMemoryPressureLevelChanged() gets indirectly called during
35 // ~SystemMemoryPressureEvaluator().
36 system_evaluator_.reset();
37}
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]38
Patrick Monette216bbdc32023-02-17 22:27:00[diff] [blame]39void MultiSourceMemoryPressureMonitor::MaybeStartPlatformVoter() {
Sebastien Marchandc9d4cd12019-10-03 22:48:01[diff] [blame]40 system_evaluator_ =
41 SystemMemoryPressureEvaluator::CreateDefaultSystemEvaluator(this);
Ryan Powellbdc27592019-09-04 22:59:39[diff] [blame]42}
43
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]44base::MemoryPressureListener::MemoryPressureLevel
45MultiSourceMemoryPressureMonitor::GetCurrentPressureLevel() const {
46 DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
47 return current_pressure_level_;
48}
49
50std::unique_ptr<MemoryPressureVoter>
51MultiSourceMemoryPressureMonitor::CreateVoter() {
52 DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
Wez861e2922020-03-01 21:14:00[diff] [blame]53 return aggregator_.CreateVoter();
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]54}
55
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]56void MultiSourceMemoryPressureMonitor::OnMemoryPressureLevelChanged(
57 base::MemoryPressureListener::MemoryPressureLevel level) {
58 DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
Sebastien Marchand6c5354e2020-02-07 19:38:25[diff] [blame]59 DCHECK_NE(current_pressure_level_, level);
60
Sebastien Marchandfcd25482021-05-03 16:19:46[diff] [blame]61 level_reporter_.OnMemoryPressureLevelChanged(level);
62
ssidfff7ab42021-03-04 20:03:11[diff] [blame]63 TRACE_EVENT_INSTANT(
Sebastien Marchand9df1f3d2020-03-23 18:54:31[diff] [blame]64 "base", "MultiSourceMemoryPressureMonitor::OnMemoryPressureLevelChanged",
ssidfff7ab42021-03-04 20:03:11[diff] [blame]65 [&](perfetto::EventContext ctx) {
66 auto* event = ctx.event<perfetto::protos::pbzero::ChromeTrackEvent>();
67 auto* data = event->set_chrome_memory_pressure_notification();
ssid8734ea72021-03-17 18:43:58[diff] [blame]68 data->set_level(
69 base::trace_event::MemoryPressureLevelToTraceEnum(level));
ssidfff7ab42021-03-04 20:03:11[diff] [blame]70 });
Sebastien Marchand9df1f3d2020-03-23 18:54:31[diff] [blame]71
Ryan Powell30287d42019-08-15 15:48:32[diff] [blame]72 current_pressure_level_ = level;
73}
74
75void MultiSourceMemoryPressureMonitor::OnNotifyListenersRequested() {
76 DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
77 dispatch_callback_.Run(current_pressure_level_);
78}
79
Ryan Powell00e61aea2019-09-04 18:33:44[diff] [blame]80void MultiSourceMemoryPressureMonitor::SetSystemEvaluator(
81 std::unique_ptr<SystemMemoryPressureEvaluator> evaluator) {
82 DCHECK(!system_evaluator_);
83 system_evaluator_ = std::move(evaluator);
84}
85
Patrick Monette216bbdc32023-02-17 22:27:00[diff] [blame]86void MultiSourceMemoryPressureMonitor::SetDispatchCallbackForTesting(
87 const DispatchCallback& callback) {
88 DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
89 // Must be called before `Start()`.
90 DCHECK(!system_evaluator_);
91 dispatch_callback_ = callback;
92}
93
Albert J. Wong23183a12021-08-13 00:23:35[diff] [blame]94} // namespace memory_pressure