Author: [email protected]
Date: Fri May 15 07:46:59 2009
New Revision: 1974
Modified:
branches/bleeding_edge/src/heap.cc
Log:
Fix debug build with a cast.
[email protected]
Modified: branches/bleeding_edge/src/heap.cc
==============================================================================
--- branches/bleeding_edge/src/heap.cc (original)
+++ branches/bleeding_edge/src/heap.cc Fri May 15 07:46:59 2009
@@ -537,6 +537,37 @@
};
+// A queue of pointers and maps of to-be-promoted objects during a
+// scavenge collection.
+class PromotionQueue {
+ public:
+ void Initialize(Address start_address) {
+ front_ = rear_ = reinterpret_cast<HeapObject**>(start_address);
+ }
+
+ bool is_empty() { return front_ <= rear_; }
+
+ void insert(HeapObject* object, Map* map) {
+ *(--rear_) = object;
+ *(--rear_) = map;
+ // Assert no overflow into live objects.
+ ASSERT(reinterpret_cast<Address>(rear_) >= Heap::new_space()->top());
+ }
+
+ void remove(HeapObject** object, Map** map) {
+ *object = *(--front_);
+ *map = Map::cast(*(--front_));
+ // Assert no underflow.
+ ASSERT(front_ >= rear_);
+ }
+
+ private:
+ // The front of the queue is higher in memory than the rear.
+ HeapObject** front_;
+ HeapObject** rear_;
+};
+
+
// Shared state read by the scavenge collector and set by ScavengeObject.
static Address promoted_rear = NULL;
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