Rosalloc thread local allocation path without a cas.
Speedup on N4:
MemAllocTest 3044 -> 2396 (~21% reduction)
BinaryTrees 4101 -> 2929 (~26% reduction)
Bug: 9986565
Change-Id: Ia1d1a37b9e001f903c3c056e8ec68fc8c623a78b
diff --git a/runtime/gc/space/malloc_space.h b/runtime/gc/space/malloc_space.h
index 06239e5..bbf1bbb 100644
--- a/runtime/gc/space/malloc_space.h
+++ b/runtime/gc/space/malloc_space.h
@@ -55,10 +55,11 @@
// Allocate num_bytes allowing the underlying space to grow.
virtual mirror::Object* AllocWithGrowth(Thread* self, size_t num_bytes,
- size_t* bytes_allocated, size_t* usable_size) = 0;
+ size_t* bytes_allocated, size_t* usable_size,
+ size_t* bytes_tl_bulk_allocated) = 0;
// Allocate num_bytes without allowing the underlying space to grow.
virtual mirror::Object* Alloc(Thread* self, size_t num_bytes, size_t* bytes_allocated,
- size_t* usable_size) = 0;
+ size_t* usable_size, size_t* bytes_tl_bulk_allocated) = 0;
// Return the storage space required by obj. If usable_size isn't nullptr then it is set to the
// amount of the storage space that may be used by obj.
virtual size_t AllocationSize(mirror::Object* obj, size_t* usable_size) = 0;
@@ -67,6 +68,11 @@
virtual size_t FreeList(Thread* self, size_t num_ptrs, mirror::Object** ptrs)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0;
+ // Returns the maximum bytes that could be allocated for the given
+ // size in bulk, that is the maximum value for the
+ // bytes_allocated_bulk out param returned by MallocSpace::Alloc().
+ virtual size_t MaxBytesBulkAllocatedFor(size_t num_bytes) = 0;
+
#ifndef NDEBUG
virtual void CheckMoreCoreForPrecondition() {} // to be overridden in the debug build.
#else