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Bug 774104 - Purge allocating arenas when incremental GC starts (r=mccr8)

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This commit is contained in:
Bill McCloskey 2012-07-15 14:37:04 -07:00
parent 3c70386ae5
commit d8a20cf52b
1 changed files with 12 additions and 0 deletions
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12
js/src/jsgc.cpp
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@ -3084,6 +3084,18 @@ BeginMarkPhase(JSRuntime *rt, bool isIncremental)
{
int64_t currentTime = PRMJ_Now();
/*
* At the end of each incremental slice, we call prepareForIncrementalGC,
* which marks objects in all arenas that we're currently allocating
* into. This can cause leaks if unreachable objects are in these
* arenas. This purge call ensures that we only mark arenas that have had
* allocations after the incremental GC started.
*/
if (isIncremental) {
for (GCCompartmentsIter c(rt); !c.done(); c.next())
c->arenas.purge();
}
rt->gcIsFull = true;
for (CompartmentsIter c(rt); !c.done(); c.next()) {
if (!c->isCollecting())