Move ArtField to native
Add linear alloc. Moved ArtField to be native object. Changed image
writer to put ArtFields after the mirror section.
Savings:
2MB on low ram devices
4MB on normal devices
Total PSS measurements before (normal N5, 95s after shell start):
Image size: 7729152 bytes
23112 kB: .NonMoving
23212 kB: .NonMoving
22868 kB: .NonMoving
23072 kB: .NonMoving
22836 kB: .NonMoving
19618 kB: .Zygote
19850 kB: .Zygote
19623 kB: .Zygote
19924 kB: .Zygote
19612 kB: .Zygote
Avg: 42745.4 kB
After:
Image size: 7462912 bytes
17440 kB: .NonMoving
16776 kB: .NonMoving
16804 kB: .NonMoving
17812 kB: .NonMoving
16820 kB: .NonMoving
18788 kB: .Zygote
18856 kB: .Zygote
19064 kB: .Zygote
18841 kB: .Zygote
18629 kB: .Zygote
3499 kB: .LinearAlloc
3408 kB: .LinearAlloc
3424 kB: .LinearAlloc
3600 kB: .LinearAlloc
3436 kB: .LinearAlloc
Avg: 39439.4 kB
No reflection performance changes.
Bug: 19264997
Bug: 17643507
Change-Id: I10c73a37913332080aeb978c7c94713bdfe4fe1c
diff --git a/runtime/base/arena_allocator.h b/runtime/base/arena_allocator.h
index cc7b856..3a86b61 100644
--- a/runtime/base/arena_allocator.h
+++ b/runtime/base/arena_allocator.h
@@ -165,7 +165,7 @@
class MemMapArena FINAL : public Arena {
public:
- explicit MemMapArena(size_t size = Arena::kDefaultSize);
+ explicit MemMapArena(size_t size, bool low_4gb);
virtual ~MemMapArena() { }
void Release() OVERRIDE;
@@ -175,7 +175,7 @@
class ArenaPool {
public:
- explicit ArenaPool(bool use_malloc = true);
+ explicit ArenaPool(bool use_malloc = true, bool low_4gb = false);
~ArenaPool();
Arena* AllocArena(size_t size) LOCKS_EXCLUDED(lock_);
void FreeArenaChain(Arena* first) LOCKS_EXCLUDED(lock_);
@@ -188,6 +188,7 @@
const bool use_malloc_;
mutable Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
Arena* free_arenas_ GUARDED_BY(lock_);
+ const bool low_4gb_;
DISALLOW_COPY_AND_ASSIGN(ArenaPool);
};
@@ -227,6 +228,9 @@
void ObtainNewArenaForAllocation(size_t allocation_size);
size_t BytesAllocated() const;
MemStats GetMemStats() const;
+ // The BytesUsed method sums up bytes allocated from arenas in arena_head_ and nodes.
+ // TODO: Change BytesAllocated to this behavior?
+ size_t BytesUsed() const;
private:
static constexpr size_t kAlignment = 8;