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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/207346">207346</a></dd>
<dt>Author</dt> <dd>barraclough@apple.com</dd>
<dt>Date</dt> <dd>2016-10-14 11:06:47 -0700 (Fri, 14 Oct 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>Add API to restrict WebKit processes to background priority
https://bugs.webkit.org/show_bug.cgi?id=163363
Reviewed by Anders Carlson.
Add API on _WKProcessPoolConfiguration to flag a process pool as 'alwaysRunsAtBackgroundPriority'.
WebContent and Networking processes associated with that pool will only run a background priority,
when they otherwise would have run at foreground priority.
* UIProcess/API/APIProcessPoolConfiguration.h:
- Add m_alwaysRunsAtBackgroundPriority flag to pool configuration object.
* UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h:
* UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm:
(-[_WKProcessPoolConfiguration alwaysRunsAtBackgroundPriority]):
(-[_WKProcessPoolConfiguration setAlwaysRunsAtBackgroundPriority:]):
- Expose new configuration property through API.
* UIProcess/Network/NetworkProcessProxy.cpp:
(WebKit::NetworkProcessProxy::alwaysRunsAtBackgroundPriority):
* UIProcess/Network/NetworkProcessProxy.h:
- Support ProcessThrottlerClient interface to check if alwaysRunsAtBackgroundPriority is set.
* UIProcess/ProcessThrottler.cpp:
(WebKit::ProcessThrottler::assertionState):
- When determining whether to take a foreground exception check alwaysRunsAtBackgroundPriority.
* UIProcess/ProcessThrottlerClient.h:
- Add interface to access alwaysRunsAtBackgroundPriority state of WebProcess of NetworkProcess.
* UIProcess/WebProcessPool.cpp:
(WebKit::WebProcessPool::WebProcessPool):
* UIProcess/WebProcessPool.h:
- Add m_alwaysRunsAtBackgroundPriority, set by configuration.
* UIProcess/WebProcessProxy.cpp:
(WebKit::WebProcessProxy::alwaysRunsAtBackgroundPriority):
* UIProcess/WebProcessProxy.h:
- Support ProcessThrottlerClient interface to check if alwaysRunsAtBackgroundPriority is set.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebKit2ChangeLog">trunk/Source/WebKit2/ChangeLog</a></li>
<li><a href="#trunkSourceWebKit2UIProcessAPIAPIProcessPoolConfigurationcpp">trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessAPIAPIProcessPoolConfigurationh">trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessAPICocoa_WKProcessPoolConfigurationh">trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessAPICocoa_WKProcessPoolConfigurationmm">trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm</a></li>
<li><a href="#trunkSourceWebKit2UIProcessNetworkNetworkProcessProxycpp">trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessNetworkNetworkProcessProxyh">trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessProcessThrottlercpp">trunk/Source/WebKit2/UIProcess/ProcessThrottler.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessProcessThrottlerClienth">trunk/Source/WebKit2/UIProcess/ProcessThrottlerClient.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebProcessPoolcpp">trunk/Source/WebKit2/UIProcess/WebProcessPool.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebProcessPoolh">trunk/Source/WebKit2/UIProcess/WebProcessPool.h</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebProcessProxycpp">trunk/Source/WebKit2/UIProcess/WebProcessProxy.cpp</a></li>
<li><a href="#trunkSourceWebKit2UIProcessWebProcessProxyh">trunk/Source/WebKit2/UIProcess/WebProcessProxy.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/ChangeLog (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/ChangeLog 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/ChangeLog 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -1,3 +1,39 @@
</span><ins>+2016-10-14 Gavin Barraclough <barraclough@apple.com>
+
+ Add API to restrict WebKit processes to background priority
+ https://bugs.webkit.org/show_bug.cgi?id=163363
+
+ Reviewed by Anders Carlson.
+
+ Add API on _WKProcessPoolConfiguration to flag a process pool as 'alwaysRunsAtBackgroundPriority'.
+ WebContent and Networking processes associated with that pool will only run a background priority,
+ when they otherwise would have run at foreground priority.
+
+ * UIProcess/API/APIProcessPoolConfiguration.h:
+ - Add m_alwaysRunsAtBackgroundPriority flag to pool configuration object.
+ * UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h:
+ * UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm:
+ (-[_WKProcessPoolConfiguration alwaysRunsAtBackgroundPriority]):
+ (-[_WKProcessPoolConfiguration setAlwaysRunsAtBackgroundPriority:]):
+ - Expose new configuration property through API.
+ * UIProcess/Network/NetworkProcessProxy.cpp:
+ (WebKit::NetworkProcessProxy::alwaysRunsAtBackgroundPriority):
+ * UIProcess/Network/NetworkProcessProxy.h:
+ - Support ProcessThrottlerClient interface to check if alwaysRunsAtBackgroundPriority is set.
+ * UIProcess/ProcessThrottler.cpp:
+ (WebKit::ProcessThrottler::assertionState):
+ - When determining whether to take a foreground exception check alwaysRunsAtBackgroundPriority.
+ * UIProcess/ProcessThrottlerClient.h:
+ - Add interface to access alwaysRunsAtBackgroundPriority state of WebProcess of NetworkProcess.
+ * UIProcess/WebProcessPool.cpp:
+ (WebKit::WebProcessPool::WebProcessPool):
+ * UIProcess/WebProcessPool.h:
+ - Add m_alwaysRunsAtBackgroundPriority, set by configuration.
+ * UIProcess/WebProcessProxy.cpp:
+ (WebKit::WebProcessProxy::alwaysRunsAtBackgroundPriority):
+ * UIProcess/WebProcessProxy.h:
+ - Support ProcessThrottlerClient interface to check if alwaysRunsAtBackgroundPriority is set.
+
</ins><span class="cx"> 2016-10-14 Youenn Fablet <youenn@apple.com>
</span><span class="cx">
</span><span class="cx"> Make NetworkCache aware of fetch cache mode
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessAPIAPIProcessPoolConfigurationcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.cpp (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.cpp 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.cpp 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -113,6 +113,7 @@
</span><span class="cx"> copy->m_overrideLanguages = this->m_overrideLanguages;
</span><span class="cx"> copy->m_sourceApplicationBundleIdentifier = this->m_sourceApplicationBundleIdentifier;
</span><span class="cx"> copy->m_sourceApplicationSecondaryIdentifier = this->m_sourceApplicationSecondaryIdentifier;
</span><ins>+ copy->m_alwaysRunsAtBackgroundPriority = this->m_alwaysRunsAtBackgroundPriority;
</ins><span class="cx"> #if PLATFORM(IOS)
</span><span class="cx"> copy->m_ctDataConnectionServiceType = this->m_ctDataConnectionServiceType;
</span><span class="cx"> #endif
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessAPIAPIProcessPoolConfigurationh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/API/APIProcessPoolConfiguration.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -108,6 +108,9 @@
</span><span class="cx"> const WTF::String& sourceApplicationSecondaryIdentifier() const { return m_sourceApplicationSecondaryIdentifier; }
</span><span class="cx"> void setSourceApplicationSecondaryIdentifier(const WTF::String& sourceApplicationSecondaryIdentifier) { m_sourceApplicationSecondaryIdentifier = sourceApplicationSecondaryIdentifier; }
</span><span class="cx">
</span><ins>+ bool alwaysRunsAtBackgroundPriority() const { return m_alwaysRunsAtBackgroundPriority; }
+ void setAlwaysRunsAtBackgroundPriority(bool alwaysRunsAtBackgroundPriority) { m_alwaysRunsAtBackgroundPriority = alwaysRunsAtBackgroundPriority; }
+
</ins><span class="cx"> #if PLATFORM(IOS)
</span><span class="cx"> const WTF::String& ctDataConnectionServiceType() const { return m_ctDataConnectionServiceType; }
</span><span class="cx"> void setCTDataConnectionServiceType(const WTF::String& ctDataConnectionServiceType) { m_ctDataConnectionServiceType = ctDataConnectionServiceType; }
</span><span class="lines">@@ -138,6 +141,7 @@
</span><span class="cx"> Vector<WTF::String> m_overrideLanguages;
</span><span class="cx"> WTF::String m_sourceApplicationBundleIdentifier;
</span><span class="cx"> WTF::String m_sourceApplicationSecondaryIdentifier;
</span><ins>+ bool m_alwaysRunsAtBackgroundPriority { false };
</ins><span class="cx"> #if PLATFORM(IOS)
</span><span class="cx"> WTF::String m_ctDataConnectionServiceType;
</span><span class="cx"> #endif
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessAPICocoa_WKProcessPoolConfigurationh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -49,6 +49,7 @@
</span><span class="cx"> @property (nonatomic, nullable, copy) NSString *sourceApplicationSecondaryIdentifier WK_API_AVAILABLE(macosx(WK_MAC_TBA), ios(WK_IOS_TBA));
</span><span class="cx"> #if TARGET_OS_IPHONE
</span><span class="cx"> @property (nonatomic, nullable, copy) NSString *CTDataConnectionServiceType WK_API_AVAILABLE(ios(WK_IOS_TBA));
</span><ins>+@property (nonatomic) BOOL alwaysRunsAtBackgroundPriority WK_API_AVAILABLE(ios(WK_IOS_TBA));
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> @end
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessAPICocoa_WKProcessPoolConfigurationmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/API/Cocoa/_WKProcessPoolConfiguration.mm 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -181,6 +181,16 @@
</span><span class="cx"> {
</span><span class="cx"> _processPoolConfiguration->setCTDataConnectionServiceType(ctDataConnectionServiceType);
</span><span class="cx"> }
</span><ins>+
+- (BOOL)alwaysRunsAtBackgroundPriority
+{
+ return _processPoolConfiguration->alwaysRunsAtBackgroundPriority();
+}
+
+- (void)setAlwaysRunsAtBackgroundPriority:(BOOL)alwaysRunsAtBackgroundPriority
+{
+ _processPoolConfiguration->setAlwaysRunsAtBackgroundPriority(alwaysRunsAtBackgroundPriority);
+}
</ins><span class="cx"> #endif
</span><span class="cx">
</span><span class="cx"> - (NSString *)description
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessNetworkNetworkProcessProxycpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.cpp (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.cpp 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.cpp 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -390,6 +390,11 @@
</span><span class="cx"> send(Messages::NetworkProcess::ProcessDidResume(), 0);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+bool NetworkProcessProxy::alwaysRunsAtBackgroundPriority()
+{
+ return m_processPool.alwaysRunsAtBackgroundPriority();
+}
+
</ins><span class="cx"> void NetworkProcessProxy::processReadyToSuspend()
</span><span class="cx"> {
</span><span class="cx"> m_throttler.processReadyToSuspend();
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessNetworkNetworkProcessProxyh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/Network/NetworkProcessProxy.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -91,6 +91,7 @@
</span><span class="cx"> void sendPrepareToSuspend() override;
</span><span class="cx"> void sendCancelPrepareToSuspend() override;
</span><span class="cx"> void sendProcessDidResume() override;
</span><ins>+ bool alwaysRunsAtBackgroundPriority() override;
</ins><span class="cx"> void didSetAssertionState(AssertionState) override;
</span><span class="cx">
</span><span class="cx"> // IPC::Connection::Client
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessProcessThrottlercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/ProcessThrottler.cpp (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/ProcessThrottler.cpp 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/ProcessThrottler.cpp 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -47,7 +47,7 @@
</span><span class="cx"> ASSERT(!m_suspendTimer.isActive());
</span><span class="cx">
</span><span class="cx"> if (m_foregroundCounter.value())
</span><del>- return AssertionState::Foreground;
</del><ins>+ return m_process.alwaysRunsAtBackgroundPriority() ? AssertionState::Background : AssertionState::Foreground;
</ins><span class="cx"> if (m_backgroundCounter.value())
</span><span class="cx"> return AssertionState::Background;
</span><span class="cx"> return AssertionState::Suspended;
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessProcessThrottlerClienth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/ProcessThrottlerClient.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/ProcessThrottlerClient.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/ProcessThrottlerClient.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -38,7 +38,7 @@
</span><span class="cx"> virtual void sendPrepareToSuspend() = 0;
</span><span class="cx"> virtual void sendCancelPrepareToSuspend() = 0;
</span><span class="cx"> virtual void sendProcessDidResume() = 0;
</span><del>-
</del><ins>+ virtual bool alwaysRunsAtBackgroundPriority() = 0;
</ins><span class="cx"> virtual void didSetAssertionState(AssertionState) = 0;
</span><span class="cx"> };
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebProcessPoolcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebProcessPool.cpp (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebProcessPool.cpp 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/WebProcessPool.cpp 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -177,6 +177,7 @@
</span><span class="cx"> , m_canHandleHTTPSServerTrustEvaluation(true)
</span><span class="cx"> , m_didNetworkProcessCrash(false)
</span><span class="cx"> , m_memoryCacheDisabled(false)
</span><ins>+ , m_alwaysRunsAtBackgroundPriority(m_configuration->alwaysRunsAtBackgroundPriority())
</ins><span class="cx"> , m_userObservablePageCounter([this](RefCounterEvent) { updateProcessSuppressionState(); })
</span><span class="cx"> , m_processSuppressionDisabledForPageCounter([this](RefCounterEvent) { updateProcessSuppressionState(); })
</span><span class="cx"> , m_hiddenPageThrottlingAutoIncreasesCounter([this](RefCounterEvent) { m_hiddenPageThrottlingTimer.startOneShot(0); })
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebProcessPoolh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebProcessPool.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebProcessPool.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/WebProcessPool.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -366,6 +366,8 @@
</span><span class="cx"> bool resourceLoadStatisticsEnabled() { return m_resourceLoadStatisticsEnabled; }
</span><span class="cx"> void setResourceLoadStatisticsEnabled(bool enabled) { m_resourceLoadStatisticsEnabled = enabled; }
</span><span class="cx">
</span><ins>+ bool alwaysRunsAtBackgroundPriority() { return m_alwaysRunsAtBackgroundPriority; }
+
</ins><span class="cx"> #if ENABLE(GAMEPAD)
</span><span class="cx"> void gamepadConnected(const UIGamepad&);
</span><span class="cx"> void gamepadDisconnected(const UIGamepad&);
</span><span class="lines">@@ -533,6 +535,8 @@
</span><span class="cx"> bool m_memoryCacheDisabled;
</span><span class="cx"> bool m_resourceLoadStatisticsEnabled { false };
</span><span class="cx">
</span><ins>+ bool m_alwaysRunsAtBackgroundPriority;
+
</ins><span class="cx"> UserObservablePageCounter m_userObservablePageCounter;
</span><span class="cx"> ProcessSuppressionDisabledCounter m_processSuppressionDisabledForPageCounter;
</span><span class="cx"> HiddenPageThrottlingAutoIncreasesCounter m_hiddenPageThrottlingAutoIncreasesCounter;
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebProcessProxycpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebProcessProxy.cpp (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebProcessProxy.cpp 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/WebProcessProxy.cpp 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -927,6 +927,11 @@
</span><span class="cx"> send(Messages::WebProcess::ProcessDidResume(), 0);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+bool WebProcessProxy::alwaysRunsAtBackgroundPriority()
+{
+ return m_processPool->alwaysRunsAtBackgroundPriority();
+}
+
</ins><span class="cx"> void WebProcessProxy::processReadyToSuspend()
</span><span class="cx"> {
</span><span class="cx"> m_throttler.processReadyToSuspend();
</span></span></pre></div>
<a id="trunkSourceWebKit2UIProcessWebProcessProxyh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebKit2/UIProcess/WebProcessProxy.h (207345 => 207346)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebKit2/UIProcess/WebProcessProxy.h 2016-10-14 17:14:39 UTC (rev 207345)
+++ trunk/Source/WebKit2/UIProcess/WebProcessProxy.h 2016-10-14 18:06:47 UTC (rev 207346)
</span><span class="lines">@@ -208,6 +208,7 @@
</span><span class="cx"> void sendPrepareToSuspend() override;
</span><span class="cx"> void sendCancelPrepareToSuspend() override;
</span><span class="cx"> void sendProcessDidResume() override;
</span><ins>+ bool alwaysRunsAtBackgroundPriority() override;
</ins><span class="cx"> void didSetAssertionState(AssertionState) override;
</span><span class="cx">
</span><span class="cx"> // ProcessLauncher::Client
</span></span></pre>
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