Title: [138336] trunk/Source/WebKit2
- Revision
- 138336
- Author
- commit-qu...@webkit.org
- Date
- 2012-12-20 18:35:48 -0800 (Thu, 20 Dec 2012)
Log Message
Set timer coalescing policy for WebKit2 processes on Mac until process visible assertion handles it automatically
https://bugs.webkit.org/show_bug.cgi?id=105594
Patch by Kiran Muppala <cmupp...@apple.com> on 2012-12-20
Reviewed by Mark Rowe.
* Shared/mac/ChildProcessMac.mm:
(WebKit::initializeTimerCoalescingPolicy): Set task_latency and task_throughput QOS tiers as appropriate
for visible applications.
(WebKit::ChildProcess::platformInitialize): Add call to initializeTimerCoalescingPolicy.
Modified Paths
Diff
Modified: trunk/Source/WebKit2/ChangeLog (138335 => 138336)
--- trunk/Source/WebKit2/ChangeLog 2012-12-21 02:18:21 UTC (rev 138335)
+++ trunk/Source/WebKit2/ChangeLog 2012-12-21 02:35:48 UTC (rev 138336)
@@ -1,3 +1,15 @@
+2012-12-20 Kiran Muppala <cmupp...@apple.com>
+
+ Set timer coalescing policy for WebKit2 processes on Mac until process visible assertion handles it automatically
+ https://bugs.webkit.org/show_bug.cgi?id=105594
+
+ Reviewed by Mark Rowe.
+
+ * Shared/mac/ChildProcessMac.mm:
+ (WebKit::initializeTimerCoalescingPolicy): Set task_latency and task_throughput QOS tiers as appropriate
+ for visible applications.
+ (WebKit::ChildProcess::platformInitialize): Add call to initializeTimerCoalescingPolicy.
+
2012-12-20 Anders Carlsson <ander...@apple.com>
Stop building WebKit2 for Windows
Modified: trunk/Source/WebKit2/Shared/mac/ChildProcessMac.mm (138335 => 138336)
--- trunk/Source/WebKit2/Shared/mac/ChildProcessMac.mm 2012-12-21 02:18:21 UTC (rev 138335)
+++ trunk/Source/WebKit2/Shared/mac/ChildProcessMac.mm 2012-12-21 02:35:48 UTC (rev 138336)
@@ -44,10 +44,21 @@
#endif
}
+#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
+static void initializeTimerCoalescingPolicy()
+{
+ // Set task_latency and task_throughput QOS tiers as appropriate for a visible application.
+ struct task_qos_policy qosinfo = { LATENCY_QOS_TIER_0, THROUGHPUT_QOS_TIER_0 };
+ kern_return_t kr = task_policy_set(mach_task_self(), TASK_BASE_QOS_POLICY, (task_policy_t)&qosinfo, TASK_QOS_POLICY_COUNT);
+ ASSERT_UNUSED(kr, kr == KERN_SUCCESS);
+}
+#endif
+
void ChildProcess::platformInitialize()
{
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
setpriority(PRIO_DARWIN_PROCESS, 0, 0);
+ initializeTimerCoalescingPolicy();
#endif
setApplicationIsOccluded(false);
}
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