Fix runnning of vm benchmarks on golem.

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 VM_BENCHMARK_TEST_H_
 #define 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/object.h"
 #include "vm/zone.h"
 
 namespace dart {
 
 DECLARE_FLAG(int, code_heap_size);
 DECLARE_FLAG(int, heap_growth_space_ratio);
 
+// snapshot_buffer points to a snapshot if we link in a snapshot otherwise
+// it is initialized to NULL.
+namespace bin {
+extern const uint8_t* snapshot_buffer;
+}
+
 // The BENCHMARK macro is used for benchmarking a specific functionality
 // of the VM
 #define BENCHMARK(name)                                                        \
   void Dart_Benchmark##name(Benchmark* benchmark);                             \
   static Benchmark kRegister##name(Dart_Benchmark##name, #name);               \
   static void Dart_BenchmarkHelper##name(Benchmark* benchmark);                \
   void Dart_Benchmark##name(Benchmark* benchmark) {                            \
     FLAG_heap_growth_space_ratio = 100;                                        \
     BenchmarkIsolateScope __isolate__(benchmark);                              \
     StackZone __zone__(benchmark->isolate());                                  \
@@ skipping 25 matching lines @@
     }
     tail_ = this;
   }
 
   // Accessors.
   const char* name() const { return name_; }
   void set_score(intptr_t value) { score_ = value; }
   intptr_t score() const { return score_; }
   Isolate* isolate() const { return reinterpret_cast<Isolate*>(isolate_); }
 
-  Dart_Isolate CreateIsolate(uint8_t* buffer) {
+  Dart_Isolate CreateIsolate(const uint8_t* buffer) {
     char* err = NULL;
     isolate_ = Dart_CreateIsolate(NULL, NULL, buffer, NULL, &err);
     EXPECT(isolate_ != NULL);
     free(err);
     return isolate_;
   }
 
   void Run() { (*run_)(this); }
   void RunBenchmark();
 
@@ skipping 12 matching lines @@
   Dart_Isolate isolate_;
   Benchmark* next_;
 
   DISALLOW_COPY_AND_ASSIGN(Benchmark);
 };
 
 
 class BenchmarkIsolateScope {
  public:
   explicit BenchmarkIsolateScope(Benchmark* benchmark) : benchmark_(benchmark) {
-    benchmark_->CreateIsolate(NULL);
+    benchmark_->CreateIsolate(bin::snapshot_buffer);
     Dart_EnterScope();  // Create a Dart API scope for unit benchmarks.
   }
   ~BenchmarkIsolateScope() {
     Dart_ExitScope();  // Exit the Dart API scope created for unit tests.
     ASSERT(benchmark_->isolate() == Isolate::Current());
     Dart_ShutdownIsolate();
     benchmark_ = NULL;
   }
   Benchmark* benchmark() const { return benchmark_; }
 
  private:
   Benchmark* benchmark_;
 
   DISALLOW_COPY_AND_ASSIGN(BenchmarkIsolateScope);
 };
 
 }  // namespace dart
 
 #endif  // VM_BENCHMARK_TEST_H_