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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PerformanceMonitor.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "DiagnosticLoggingClient.h"
#include "DiagnosticLoggingKeys.h"
#include "Logging.h"
#include "Page.h"
#include "PerformanceLogging.h"
#include "Settings.h"
namespace WebCore {
#define RELEASE_LOG_IF_ALLOWED(channel, fmt, ...) RELEASE_LOG_IF(m_page.isAlwaysOnLoggingAllowed(), channel, "%p - PerformanceMonitor::" fmt, this, ##__VA_ARGS__)
static const std::chrono::seconds cpuUsageMeasurementDelay { 5 };
static const std::chrono::seconds postLoadCPUUsageMeasurementDuration { 10 };
static const std::chrono::minutes backgroundCPUUsageMeasurementDuration { 5 };
static const std::chrono::minutes cpuUsageSamplingInterval { 10 };
static const std::chrono::seconds memoryUsageMeasurementDelay { 10 };
static inline ActivityStateForCPUSampling activityStateForCPUSampling(ActivityState::Flags state)
{
if (!(state & ActivityState::IsVisible))
return ActivityStateForCPUSampling::NonVisible;
if (state & ActivityState::WindowIsActive)
return ActivityStateForCPUSampling::VisibleAndActive;
return ActivityStateForCPUSampling::VisibleNonActive;
}
PerformanceMonitor::PerformanceMonitor(Page& page)
: m_page(page)
, m_postPageLoadCPUUsageTimer(*this, &PerformanceMonitor::measurePostLoadCPUUsage)
, m_postBackgroundingCPUUsageTimer(*this, &PerformanceMonitor::measurePostBackgroundingCPUUsage)
, m_perActivityStateCPUUsageTimer(*this, &PerformanceMonitor::measurePerActivityStateCPUUsage)
, m_postPageLoadMemoryUsageTimer(*this, &PerformanceMonitor::measurePostLoadMemoryUsage)
, m_postBackgroundingMemoryUsageTimer(*this, &PerformanceMonitor::measurePostBackgroundingMemoryUsage)
{
ASSERT(!page.isUtilityPage());
if (Settings::isPerActivityStateCPUUsageMeasurementEnabled()) {
m_perActivityStateCPUTime = getCPUTime();
m_perActivityStateCPUUsageTimer.startRepeating(cpuUsageSamplingInterval);
}
}
void PerformanceMonitor::didStartProvisionalLoad()
{
m_postLoadCPUTime = std::nullopt;
m_postPageLoadCPUUsageTimer.stop();
m_postPageLoadMemoryUsageTimer.stop();
}
void PerformanceMonitor::didFinishLoad()
{
// Only do post-load CPU usage measurement if there is a single Page in the process in order to reduce noise.
if (Settings::isPostLoadCPUUsageMeasurementEnabled() && m_page.isOnlyNonUtilityPage()) {
m_postLoadCPUTime = std::nullopt;
m_postPageLoadCPUUsageTimer.startOneShot(cpuUsageMeasurementDelay);
}
// Likewise for post-load memory usage measurement.
if (Settings::isPostLoadMemoryUsageMeasurementEnabled() && m_page.isOnlyNonUtilityPage())
m_postPageLoadMemoryUsageTimer.startOneShot(memoryUsageMeasurementDelay);
}
void PerformanceMonitor::activityStateChanged(ActivityState::Flags oldState, ActivityState::Flags newState)
{
ActivityState::Flags changed = oldState ^ newState;
bool visibilityChanged = changed & ActivityState::IsVisible;
// Measure CPU usage of pages when they are no longer visible.
if (Settings::isPostBackgroundingCPUUsageMeasurementEnabled() && visibilityChanged) {
m_postBackgroundingCPUTime = std::nullopt;
if (newState & ActivityState::IsVisible)
m_postBackgroundingCPUUsageTimer.stop();
else if (m_page.isOnlyNonUtilityPage())
m_postBackgroundingCPUUsageTimer.startOneShot(cpuUsageMeasurementDelay);
}
if (Settings::isPerActivityStateCPUUsageMeasurementEnabled()) {
// If visibility changed then report CPU usage right away because CPU usage is connected to visibility state.
auto oldActivityStateForCPUSampling = activityStateForCPUSampling(oldState);
if (oldActivityStateForCPUSampling != activityStateForCPUSampling(newState)) {
measureCPUUsageInActivityState(oldActivityStateForCPUSampling);
m_perActivityStateCPUUsageTimer.startRepeating(cpuUsageSamplingInterval);
}
}
if (Settings::isPostBackgroundingMemoryUsageMeasurementEnabled() && visibilityChanged) {
if (newState & ActivityState::IsVisible)
m_postBackgroundingMemoryUsageTimer.stop();
else if (m_page.isOnlyNonUtilityPage())
m_postBackgroundingMemoryUsageTimer.startOneShot(memoryUsageMeasurementDelay);
}
}
void PerformanceMonitor::measurePostLoadCPUUsage()
{
if (!m_page.isOnlyNonUtilityPage()) {
m_postLoadCPUTime = std::nullopt;
return;
}
if (!m_postLoadCPUTime) {
m_postLoadCPUTime = getCPUTime();
if (m_postLoadCPUTime)
m_postPageLoadCPUUsageTimer.startOneShot(postLoadCPUUsageMeasurementDuration);
return;
}
std::optional<CPUTime> cpuTime = getCPUTime();
if (!cpuTime)
return;
double cpuUsage = cpuTime.value().percentageCPUUsageSince(*m_postLoadCPUTime);
RELEASE_LOG_IF_ALLOWED(PerformanceLogging, "measurePostLoadCPUUsage: Process was using %.1f%% CPU after the page load.", cpuUsage);
m_page.diagnosticLoggingClient().logDiagnosticMessage(DiagnosticLoggingKeys::postPageLoadCPUUsageKey(), DiagnosticLoggingKeys::foregroundCPUUsageToDiagnosticLoggingKey(cpuUsage), ShouldSample::No);
}
void PerformanceMonitor::measurePostLoadMemoryUsage()
{
if (!m_page.isOnlyNonUtilityPage())
return;
std::optional<uint64_t> memoryUsage = PerformanceLogging::physicalFootprint();
if (!memoryUsage)
return;
RELEASE_LOG_IF_ALLOWED(PerformanceLogging, "measurePostLoadMemoryUsage: Process was using %llu bytes of memory after the page load.", memoryUsage.value());
m_page.diagnosticLoggingClient().logDiagnosticMessage(DiagnosticLoggingKeys::postPageLoadMemoryUsageKey(), DiagnosticLoggingKeys::memoryUsageToDiagnosticLoggingKey(memoryUsage.value()), ShouldSample::No);
}
void PerformanceMonitor::measurePostBackgroundingMemoryUsage()
{
if (!m_page.isOnlyNonUtilityPage())
return;
std::optional<uint64_t> memoryUsage = PerformanceLogging::physicalFootprint();
if (!memoryUsage)
return;
RELEASE_LOG_IF_ALLOWED(PerformanceLogging, "measurePostBackgroundingMemoryUsage: Process was using %llu bytes of memory after becoming non visible.", memoryUsage.value());
m_page.diagnosticLoggingClient().logDiagnosticMessage(DiagnosticLoggingKeys::postPageBackgroundingMemoryUsageKey(), DiagnosticLoggingKeys::memoryUsageToDiagnosticLoggingKey(memoryUsage.value()), ShouldSample::No);
}
void PerformanceMonitor::measurePostBackgroundingCPUUsage()
{
if (!m_page.isOnlyNonUtilityPage()) {
m_postBackgroundingCPUTime = std::nullopt;
return;
}
if (!m_postBackgroundingCPUTime) {
m_postBackgroundingCPUTime = getCPUTime();
if (m_postBackgroundingCPUTime)
m_postBackgroundingCPUUsageTimer.startOneShot(backgroundCPUUsageMeasurementDuration);
return;
}
std::optional<CPUTime> cpuTime = getCPUTime();
if (!cpuTime)
return;
double cpuUsage = cpuTime.value().percentageCPUUsageSince(*m_postBackgroundingCPUTime);
RELEASE_LOG_IF_ALLOWED(PerformanceLogging, "measurePostBackgroundingCPUUsage: Process was using %.1f%% CPU after becoming non visible.", cpuUsage);
m_page.diagnosticLoggingClient().logDiagnosticMessage(DiagnosticLoggingKeys::postPageBackgroundingCPUUsageKey(), DiagnosticLoggingKeys::backgroundCPUUsageToDiagnosticLoggingKey(cpuUsage), ShouldSample::No);
}
void PerformanceMonitor::measurePerActivityStateCPUUsage()
{
measureCPUUsageInActivityState(activityStateForCPUSampling(m_page.activityState()));
}
#if !RELEASE_LOG_DISABLED
static inline const char* stringForCPUSamplingActivityState(ActivityStateForCPUSampling activityState)
{
switch (activityState) {
case ActivityStateForCPUSampling::NonVisible:
return "NonVisible";
case ActivityStateForCPUSampling::VisibleNonActive:
return "VisibleNonActive";
case ActivityStateForCPUSampling::VisibleAndActive:
return "VisibleAndActive";
}
}
#endif
void PerformanceMonitor::measureCPUUsageInActivityState(ActivityStateForCPUSampling activityState)
{
if (!m_page.isOnlyNonUtilityPage()) {
m_perActivityStateCPUTime = std::nullopt;
return;
}
if (!m_perActivityStateCPUTime) {
m_perActivityStateCPUTime = getCPUTime();
return;
}
std::optional<CPUTime> cpuTime = getCPUTime();
if (!cpuTime) {
m_perActivityStateCPUTime = std::nullopt;
return;
}
#if !RELEASE_LOG_DISABLED
double cpuUsage = cpuTime.value().percentageCPUUsageSince(*m_perActivityStateCPUTime);
RELEASE_LOG_IF_ALLOWED(PerformanceLogging, "measureCPUUsageInActivityState: Process is using %.1f%% CPU in state: %s", cpuUsage, stringForCPUSamplingActivityState(activityState));
#endif
m_page.chrome().client().reportProcessCPUTime((cpuTime.value().systemTime + cpuTime.value().userTime) - (m_perActivityStateCPUTime.value().systemTime + m_perActivityStateCPUTime.value().userTime), activityState);
m_perActivityStateCPUTime = WTFMove(cpuTime);
}
} // namespace WebCore
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