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Don't allow large object space to grow over the max oldspace limit (fixes issue 1717)

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Review URL: http://codereview.chromium.org/8345040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9695 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
ricow@chromium.org 2011-10-19 10:15:09 +00:00
parent d0fe04447e
commit 1c21a9dc6a
3 changed files with 11 additions and 3 deletions
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2
src/heap.cc
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@ -5450,7 +5450,7 @@ bool Heap::Setup(bool create_heap_objects) {
// The large object code space may contain code or data. We set the memory
// to be non-executable here for safety, but this means we need to enable it
// explicitly when allocating large code objects.
lo_space_ = new LargeObjectSpace(this, LO_SPACE);
lo_space_ = new LargeObjectSpace(this, max_old_generation_size_, LO_SPACE);
if (lo_space_ == NULL) return false;
if (!lo_space_->Setup()) return false;
if (create_heap_objects) {

9
src/spaces.cc
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@ -2291,8 +2291,11 @@ HeapObject* LargeObjectIterator::Next() {
// -----------------------------------------------------------------------------
// LargeObjectSpace
LargeObjectSpace::LargeObjectSpace(Heap* heap, AllocationSpace id)
LargeObjectSpace::LargeObjectSpace(Heap* heap,
intptr_t max_capacity,
AllocationSpace id)
: Space(heap, id, NOT_EXECUTABLE), // Managed on a per-allocation basis
max_capacity_(max_capacity),
first_page_(NULL),
size_(0),
page_count_(0),
@ -2332,6 +2335,10 @@ MaybeObject* LargeObjectSpace::AllocateRaw(int object_size,
return Failure::RetryAfterGC(identity());
}
if (Size() + object_size > max_capacity_) {
return Failure::RetryAfterGC(identity());
}
LargePage* page = heap()->isolate()->memory_allocator()->
AllocateLargePage(object_size, executable, this);
if (page == NULL) return Failure::RetryAfterGC(identity());

3
src/spaces.h
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@ -2442,7 +2442,7 @@ class CellSpace : public FixedSpace {
class LargeObjectSpace : public Space {
public:
LargeObjectSpace(Heap* heap, AllocationSpace id);
LargeObjectSpace(Heap* heap, intptr_t max_capacity, AllocationSpace id);
virtual ~LargeObjectSpace() {}
// Initializes internal data structures.
@ -2512,6 +2512,7 @@ class LargeObjectSpace : public Space {
bool SlowContains(Address addr) { return !FindObject(addr)->IsFailure(); }
private:
intptr_t max_capacity_;
// The head of the linked list of large object chunks.
LargePage* first_page_;
intptr_t size_; // allocated bytes