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Bug 1371242, try to run CC slices more likely during idle periods, r=mccr8

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--HG--
extra : rebase_source : 9727cb14deafe3b92139646074ea201126579c1f
This commit is contained in:
Olli Pettay 2017-06-28 22:38:53 +03:00
parent 5257fdad8c
commit 0e561a84cf
1 changed files with 13 additions and 4 deletions
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17
dom/base/nsJSEnvironment.cpp
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@ -60,6 +60,7 @@
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/DOMException.h"
#include "mozilla/dom/DOMExceptionBinding.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ErrorEvent.h"
#include "mozilla/dom/ScriptSettings.h"
#include "nsAXPCNativeCallContext.h"
@ -125,12 +126,12 @@ const size_t gStackSize = 8192;
static const int64_t kForgetSkippableSliceDuration = 2;
// Maximum amount of time that should elapse between incremental CC slices
static const int64_t kICCIntersliceDelay = 32; // ms
static const int64_t kICCIntersliceDelay = 64; // ms
// Time budget for an incremental CC slice when using timer to run it.
static const int64_t kICCSliceBudget = 5; // ms
static const int64_t kICCSliceBudget = 3; // ms
// Minimum budget for an incremental CC slice when using idle time to run it.
static const int64_t kIdleICCSliceBudget = 3; // ms
static const int64_t kIdleICCSliceBudget = 2; // ms
// Maximum total duration for an ICC
static const uint32_t kMaxICCDuration = 2000; // ms
@ -1741,7 +1742,10 @@ nsJSContext::RunCycleCollectorSlice(TimeStamp aDeadline)
}
}
nsCycleCollector_collectSlice(budget);
nsCycleCollector_collectSlice(budget,
aDeadline.IsNull() ||
(aDeadline - TimeStamp::Now()).ToMilliseconds() <
kICCSliceBudget);
gCCStats.FinishCycleCollectionSlice();
}
@ -2103,6 +2107,11 @@ CCRunnerFired(TimeStamp aDeadline, void* aData)
if (ShouldTriggerCC(nsCycleCollector_suspectedCount())) {
// Our efforts to avoid a CC have failed, so we return to let the
// timer fire once more to trigger a CC.
// Clear content unbinder before the first CC slice.
Element::ClearContentUnbinder();
// And trigger deferred deletion too.
nsCycleCollector_doDeferredDeletion();
return didDoWork;
}
} else {