Version 3.21.13
Added a ResourceConstraint for the embedder to specify that V8 is running on a memory constrained device. (Chromium issue 280984)
Removed HandleScope default ctor. (Chromium issue 236173)
Enabled escape analysis for Hydrogen.
Correctly stringified mixed encoding indirect strings. (Chromium issue 287476)
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@16634 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/heap-inl.h b/src/heap-inl.h
index 8808855..86aff1a 100644
--- a/src/heap-inl.h
+++ b/src/heap-inl.h
@@ -69,7 +69,7 @@
*(--rear_) = size;
// Assert no overflow into live objects.
#ifdef DEBUG
- SemiSpace::AssertValidRange(HEAP->new_space()->top(),
+ SemiSpace::AssertValidRange(target->GetIsolate()->heap()->new_space()->top(),
reinterpret_cast<Address>(rear_));
#endif
}
@@ -508,7 +508,7 @@
void Heap::ScavengeObject(HeapObject** p, HeapObject* object) {
- ASSERT(HEAP->InFromSpace(object));
+ ASSERT(object->GetIsolate()->heap()->InFromSpace(object));
// We use the first word (where the map pointer usually is) of a heap
// object to record the forwarding pointer. A forwarding pointer can
@@ -520,11 +520,13 @@
// copied.
if (first_word.IsForwardingAddress()) {
HeapObject* dest = first_word.ToForwardingAddress();
- ASSERT(HEAP->InFromSpace(*p));
+ ASSERT(object->GetIsolate()->heap()->InFromSpace(*p));
*p = dest;
return;
}
+ // TODO(hpayer): temporary debugging code for issue 284577.
+ CHECK(object->map() != object->GetHeap()->allocation_memento_map());
// Call the slow part of scavenge object.
return ScavengeObjectSlow(p, object);
}
@@ -613,10 +615,10 @@
#ifdef DEBUG
-#define GC_GREEDY_CHECK() \
- if (FLAG_gc_greedy) HEAP->GarbageCollectionGreedyCheck()
+#define GC_GREEDY_CHECK(ISOLATE) \
+ if (FLAG_gc_greedy) (ISOLATE)->heap()->GarbageCollectionGreedyCheck()
#else
-#define GC_GREEDY_CHECK() { }
+#define GC_GREEDY_CHECK(ISOLATE) { }
#endif
// Calls the FUNCTION_CALL function and retries it up to three times
@@ -628,7 +630,7 @@
#define CALL_AND_RETRY(ISOLATE, FUNCTION_CALL, RETURN_VALUE, RETURN_EMPTY, OOM)\
do { \
- GC_GREEDY_CHECK(); \
+ GC_GREEDY_CHECK(ISOLATE); \
MaybeObject* __maybe_object__ = FUNCTION_CALL; \
Object* __object__ = NULL; \
if (__maybe_object__->ToObject(&__object__)) RETURN_VALUE; \
@@ -636,7 +638,7 @@
OOM; \
} \
if (!__maybe_object__->IsRetryAfterGC()) RETURN_EMPTY; \
- ISOLATE->heap()->CollectGarbage(Failure::cast(__maybe_object__)-> \
+ (ISOLATE)->heap()->CollectGarbage(Failure::cast(__maybe_object__)-> \
allocation_space(), \
"allocation failure"); \
__maybe_object__ = FUNCTION_CALL; \
@@ -645,8 +647,8 @@
OOM; \
} \
if (!__maybe_object__->IsRetryAfterGC()) RETURN_EMPTY; \
- ISOLATE->counters()->gc_last_resort_from_handles()->Increment(); \
- ISOLATE->heap()->CollectAllAvailableGarbage("last resort gc"); \
+ (ISOLATE)->counters()->gc_last_resort_from_handles()->Increment(); \
+ (ISOLATE)->heap()->CollectAllAvailableGarbage("last resort gc"); \
{ \
AlwaysAllocateScope __scope__; \
__maybe_object__ = FUNCTION_CALL; \
@@ -719,12 +721,12 @@
for (int i = 0; i < new_space_strings_.length(); ++i) {
Object* obj = Object::cast(new_space_strings_[i]);
ASSERT(heap_->InNewSpace(obj));
- ASSERT(obj != HEAP->the_hole_value());
+ ASSERT(obj != heap_->the_hole_value());
}
for (int i = 0; i < old_space_strings_.length(); ++i) {
Object* obj = Object::cast(old_space_strings_[i]);
ASSERT(!heap_->InNewSpace(obj));
- ASSERT(obj != HEAP->the_hole_value());
+ ASSERT(obj != heap_->the_hole_value());
}
#endif
}
@@ -831,25 +833,29 @@
// non-handle code to call handle code. The code still works but
// performance will degrade, so we want to catch this situation
// in debug mode.
- ASSERT(HEAP->always_allocate_scope_depth_ == 0);
- HEAP->always_allocate_scope_depth_++;
+ Isolate* isolate = Isolate::Current();
+ ASSERT(isolate->heap()->always_allocate_scope_depth_ == 0);
+ isolate->heap()->always_allocate_scope_depth_++;
}
AlwaysAllocateScope::~AlwaysAllocateScope() {
- HEAP->always_allocate_scope_depth_--;
- ASSERT(HEAP->always_allocate_scope_depth_ == 0);
+ Isolate* isolate = Isolate::Current();
+ isolate->heap()->always_allocate_scope_depth_--;
+ ASSERT(isolate->heap()->always_allocate_scope_depth_ == 0);
}
#ifdef VERIFY_HEAP
NoWeakEmbeddedMapsVerificationScope::NoWeakEmbeddedMapsVerificationScope() {
- HEAP->no_weak_embedded_maps_verification_scope_depth_++;
+ Isolate* isolate = Isolate::Current();
+ isolate->heap()->no_weak_embedded_maps_verification_scope_depth_++;
}
NoWeakEmbeddedMapsVerificationScope::~NoWeakEmbeddedMapsVerificationScope() {
- HEAP->no_weak_embedded_maps_verification_scope_depth_--;
+ Isolate* isolate = Isolate::Current();
+ isolate->heap()->no_weak_embedded_maps_verification_scope_depth_--;
}
#endif
@@ -858,7 +864,7 @@
for (Object** current = start; current < end; current++) {
if ((*current)->IsHeapObject()) {
HeapObject* object = HeapObject::cast(*current);
- CHECK(HEAP->Contains(object));
+ CHECK(object->GetIsolate()->heap()->Contains(object));
CHECK(object->map()->IsMap());
}
}
@@ -866,21 +872,23 @@
double GCTracer::SizeOfHeapObjects() {
- return (static_cast<double>(HEAP->SizeOfObjects())) / MB;
+ return (static_cast<double>(heap_->SizeOfObjects())) / MB;
}
DisallowAllocationFailure::DisallowAllocationFailure() {
#ifdef DEBUG
- old_state_ = HEAP->disallow_allocation_failure_;
- HEAP->disallow_allocation_failure_ = true;
+ Isolate* isolate = Isolate::Current();
+ old_state_ = isolate->heap()->disallow_allocation_failure_;
+ isolate->heap()->disallow_allocation_failure_ = true;
#endif
}
DisallowAllocationFailure::~DisallowAllocationFailure() {
#ifdef DEBUG
- HEAP->disallow_allocation_failure_ = old_state_;
+ Isolate* isolate = Isolate::Current();
+ isolate->heap()->disallow_allocation_failure_ = old_state_;
#endif
}