Updated MallocHooks to collect stack traces when memory is allocated.

runtime/vm/benchmark_test.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_BENCHMARK_TEST_H_
 #define RUNTIME_VM_BENCHMARK_TEST_H_
 
 #include "include/dart_api.h"
 
 #include "vm/dart.h"
 #include "vm/globals.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
+#include "vm/malloc_hooks.h"
 #include "vm/object.h"
 #include "vm/zone.h"
 
 namespace dart {
 
 DECLARE_FLAG(int, code_heap_size);
 DECLARE_FLAG(int, old_gen_growth_space_ratio);
 
 namespace bin {
 // Snapshot pieces if we link in a snapshot, otherwise initialized to NULL.
 extern const uint8_t* vm_snapshot_data;
 extern const uint8_t* vm_snapshot_instructions;
 extern const uint8_t* core_isolate_snapshot_data;
 extern const uint8_t* core_isolate_snapshot_instructions;
 }
 
 // The BENCHMARK macros are used for benchmarking a specific functionality
 // of the VM.
 #define BENCHMARK_HELPER(name, kind)                                           \
   void Dart_Benchmark##name(Benchmark* benchmark);                             \
   static Benchmark kRegister##name(Dart_Benchmark##name, #name, kind);         \
   static void Dart_BenchmarkHelper##name(Benchmark* benchmark,                 \
                                          Thread* thread);                      \
   void Dart_Benchmark##name(Benchmark* benchmark) {                            \
+    bool __stack_trace_collection_enabled__ =                                  \
+        MallocHooks::stack_trace_collection_enabled();                         \
+    MallocHooks::set_stack_trace_collection_enabled(false);                    \
     FLAG_old_gen_growth_space_ratio = 100;                                     \
     BenchmarkIsolateScope __isolate__(benchmark);                              \
     Thread* __thread__ = Thread::Current();                                    \
     ASSERT(__thread__->isolate() == benchmark->isolate());                     \
     StackZone __zone__(__thread__);                                            \
     HandleScope __hs__(__thread__);                                            \
     Dart_BenchmarkHelper##name(benchmark, __thread__);                         \
+    MallocHooks::set_stack_trace_collection_enabled(                           \
+        __stack_trace_collection_enabled__);                                   \
   }                                                                            \
   static void Dart_BenchmarkHelper##name(Benchmark* benchmark, Thread* thread)
 
 #define BENCHMARK(name) BENCHMARK_HELPER(name, "RunTime")
 #define BENCHMARK_SIZE(name) BENCHMARK_HELPER(name, "CodeSize")
 #define BENCHMARK_MEMORY(name) BENCHMARK_HELPER(name, "MemoryUse")
 
 inline Dart_Handle NewString(const char* str) {
   return Dart_NewStringFromCString(str);
 }
@@ skipping 68 matching lines @@
 
  private:
   Benchmark* benchmark_;
 
   DISALLOW_COPY_AND_ASSIGN(BenchmarkIsolateScope);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_BENCHMARK_TEST_H_