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Bug 961091 - Don't compact full store buffers so often after GC has been triggered r=terrence

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This commit is contained in:
Jon Coppeard 2014-02-07 11:21:44 +00:00
parent 912f4637ff
commit ebca104c52
2 changed files with 26 additions and 5 deletions
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22
js/src/gc/StoreBuffer.cpp
View File

@ -82,6 +82,28 @@ StoreBuffer::WholeCellEdges::mark(JSTracer *trc)
/*** MonoTypeBuffer ***/
template <typename T>
void
StoreBuffer::MonoTypeBuffer<T>::handleOverflow(StoreBuffer *owner)
{
if (!owner->isAboutToOverflow()) {
/*
* Compact the buffer now, and if that fails to free enough space then
* trigger a minor collection.
*/
compact(owner);
if (isAboutToOverflow())
owner->setAboutToOverflow();
} else {
/*
* A minor GC has already been triggered, so there's no point
* compacting unless the buffer is totally full.
*/
if (storage_->availableInCurrentChunk() < sizeof(T))
compact(owner);
}
}
template <typename T>
void
StoreBuffer::MonoTypeBuffer<T>::compactRemoveDuplicates(StoreBuffer *owner)

7
js/src/gc/StoreBuffer.h
View File

@ -115,6 +115,8 @@ class StoreBuffer
return !storage_->isEmpty() && storage_->availableInCurrentChunk() < MinAvailableSize;
}
void handleOverflow(StoreBuffer *owner);
/* Compaction algorithms. */
void compactRemoveDuplicates(StoreBuffer *owner);
@ -135,11 +137,8 @@ class StoreBuffer
if (!tp)
CrashAtUnhandlableOOM("Failed to allocate for MonoTypeBuffer::put.");
if (isAboutToOverflow()) {
compact(owner);
if (isAboutToOverflow())
owner->setAboutToOverflow();
}
handleOverflow(owner);
}
/* Mark the source of all edges in the store buffer. */