2 files changed, 17 insertions, 3 deletions
diff --git a/compiler/utils/arena_allocator.cc b/compiler/utils/arena_allocator.cc
index 004af98852..a80ad938a6 100644
--- a/compiler/utils/arena_allocator.cc
+++ b/compiler/utils/arena_allocator.cc
@@ -189,6 +189,15 @@ Arena* ArenaPool::AllocArena(size_t size) {
   return ret;
 }
 
+size_t ArenaPool::GetBytesAllocated() const {
+  size_t total = 0;
+  MutexLock lock(Thread::Current(), lock_);
+  for (Arena* arena = free_arenas_; arena != nullptr; arena = arena->next_) {
+    total += arena->GetBytesAllocated();
+  }
+  return total;
+}
+
 void ArenaPool::FreeArenaChain(Arena* first) {
   if (UNLIKELY(RUNNING_ON_VALGRIND > 0)) {
     for (Arena* arena = first; arena != nullptr; arena = arena->next_) {
diff --git a/compiler/utils/arena_allocator.h b/compiler/utils/arena_allocator.h
index 6d213991d3..7f5bc9ac4c 100644
--- a/compiler/utils/arena_allocator.h
+++ b/compiler/utils/arena_allocator.h
@@ -135,6 +135,10 @@ class Arena {
     return Size() - bytes_allocated_;
   }
 
+  size_t GetBytesAllocated() const {
+    return bytes_allocated_;
+  }
+
  private:
   size_t bytes_allocated_;
   uint8_t* memory_;
@@ -153,11 +157,12 @@ class ArenaPool {
  public:
   ArenaPool();
   ~ArenaPool();
-  Arena* AllocArena(size_t size);
-  void FreeArenaChain(Arena* first);
+  Arena* AllocArena(size_t size) LOCKS_EXCLUDED(lock_);
+  void FreeArenaChain(Arena* first) LOCKS_EXCLUDED(lock_);
+  size_t GetBytesAllocated() const LOCKS_EXCLUDED(lock_);
 
  private:
-  Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
+  mutable Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
   Arena* free_arenas_ GUARDED_BY(lock_);
   DISALLOW_COPY_AND_ASSIGN(ArenaPool);
 };