diff options
Diffstat (limited to 'dom/base/nsJSEnvironment.cpp')
| -rw-r--r-- | dom/base/nsJSEnvironment.cpp | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp index 4a984d294..3f28533d3 100644 --- a/dom/base/nsJSEnvironment.cpp +++ b/dom/base/nsJSEnvironment.cpp @@ -126,13 +126,13 @@ static const uint32_t kMaxICCDuration = 2000; // ms // Force a CC after this long if there's more than NS_CC_FORCED_PURPLE_LIMIT // objects in the purple buffer. #define NS_CC_FORCED (2 * 60 * PR_USEC_PER_SEC) // 2 min -#define NS_CC_FORCED_PURPLE_LIMIT 10 +#define NS_CC_FORCED_PURPLE_LIMIT 100 // Don't allow an incremental GC to lock out the CC for too long. #define NS_MAX_CC_LOCKEDOUT_TIME (30 * PR_USEC_PER_SEC) // 30 seconds // Trigger a CC if the purple buffer exceeds this size when we check it. -#define NS_CC_PURPLE_LIMIT 200 +#define NS_CC_PURPLE_LIMIT 2000 // Large value used to specify that a script should run essentially forever #define NS_UNLIMITED_SCRIPT_RUNTIME (0x40000000LL << 32) @@ -625,7 +625,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSContext) NS_IMPL_CYCLE_COLLECTION_UNLINK_END NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSContext) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobalObjectRef) - NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsJSContext) @@ -1356,9 +1355,20 @@ nsJSContext::RunCycleCollectorSlice() TimeStamp now = TimeStamp::Now(); // Only run a limited slice if we're within the max running time. - if (TimeBetween(gCCStats.mBeginTime, now) < kMaxICCDuration) { - float sliceMultiplier = std::max(TimeBetween(gCCStats.mEndSliceTime, now) / (float)kICCIntersliceDelay, 1.0f); - budget = js::SliceBudget(js::TimeBudget(kICCSliceBudget * sliceMultiplier)); + uint32_t runningTime = TimeBetween(gCCStats.mBeginTime, now); + if (runningTime < kMaxICCDuration) { + // Try to make up for a delay in running this slice. + float sliceDelayMultiplier = TimeBetween(gCCStats.mEndSliceTime, now) / (float)kICCIntersliceDelay; + float delaySliceBudget = kICCSliceBudget * sliceDelayMultiplier; + + // Increase slice budgets up to |maxLaterSlice| as we approach + // half way through the ICC, to avoid large sync CCs. + float percentToHalfDone = std::min(2.0f * runningTime / kMaxICCDuration, 1.0f); + const float maxLaterSlice = 40.0f; + float laterSliceBudget = maxLaterSlice * percentToHalfDone; + + budget = js::SliceBudget(js::TimeBudget(std::max({delaySliceBudget, + laterSliceBudget, (float)kICCSliceBudget}))); } } } @@ -2618,7 +2628,6 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsJSArgArray) tmp->ReleaseJSObjects(); NS_IMPL_CYCLE_COLLECTION_UNLINK_END NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsJSArgArray) - NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(nsJSArgArray) |