Add thread unsafe allocation methods to spaces.
Used by SS/GSS collectors since these run with mutators suspended and
only allocate from a single thread. Added AllocThreadUnsafe to
BumpPointerSpace and RosAllocSpace. Added AllocThreadUnsafe which uses
current runs as thread local runs for a thread unsafe allocation.
Added code to revoke current runs which are the same idx as thread
local runs.
Changed:
The number of thread local runs in each thread is now the the number
of thread local runs in RosAlloc instead of the number of size
brackets.
Total GC time / time on EvaluateAndApplyChanges.
TLAB SS:
Before: 36.7s / 7254
After: 16.1s / 4837
TLAB GSS:
Before: 6.9s / 3973
After: 5.7s / 3778
Bug: 8981901
Change-Id: Id1d264ade3799f431bf7ebbdcca6146aefbeb632
diff --git a/runtime/gc/space/rosalloc_space-inl.h b/runtime/gc/space/rosalloc_space-inl.h
index d270885..fbfef45 100644
--- a/runtime/gc/space/rosalloc_space-inl.h
+++ b/runtime/gc/space/rosalloc_space-inl.h
@@ -46,11 +46,15 @@
return size_by_size;
}
+template<bool kThreadSafe>
inline mirror::Object* RosAllocSpace::AllocCommon(Thread* self, size_t num_bytes,
size_t* bytes_allocated, size_t* usable_size) {
size_t rosalloc_size = 0;
+ if (!kThreadSafe) {
+ Locks::mutator_lock_->AssertExclusiveHeld(self);
+ }
mirror::Object* result = reinterpret_cast<mirror::Object*>(
- rosalloc_->Alloc(self, num_bytes, &rosalloc_size));
+ rosalloc_->Alloc<kThreadSafe>(self, num_bytes, &rosalloc_size));
if (LIKELY(result != NULL)) {
if (kDebugSpaces) {
CHECK(Contains(result)) << "Allocation (" << reinterpret_cast<void*>(result)