Add infrastructure to create and run benchmarks specific to some VM functionality. This is used to …

vm/benchmark_test.cc

+// 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.
+
+#include "vm/benchmark_test.h"
+#include "vm/dart_api_impl.h"
+
+namespace dart {
+
+Benchmark* Benchmark::first_ = NULL;
+Benchmark* Benchmark::tail_ = NULL;
+
+void Benchmark::RunAll() {
+  Benchmark* benchmark = first_;
+  while (benchmark != NULL) {
+    benchmark->RunBenchmark();
+    benchmark = benchmark->next_;
+  }
+}
+
+
+// Compiler only implemented on IA32 and X64 now.
+#if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
+
+BENCHMARK(CorelibCompileAll) {
+  Timer timer(true, "Compile all benchmark");
+  timer.Start();
+  const Error& error = Error::Handle(benchmark->isolate(),
+                                     Library::CompileAll());
+  EXPECT(error.IsNull());
+  timer.Stop();
+  int64_t elapsed_time = timer.TotalElapsedTime();
+  benchmark->set_score(elapsed_time);
+}
+
+#endif  // TARGET_ARCH_IA32 || TARGET_ARCH_X64
+
+
+BENCHMARK(CorelibIsolateStartup) {
+  const int kNumIterations = 100;
+  char* err;

[srdjan, 2012/04/20 23:13:55]

initialize to NULL?

[siva, 2012/04/30 16:38:04]

Done.

+  Dart_Isolate base_isolate = Dart_CurrentIsolate();
+  Dart_Isolate test_isolate = Dart_CreateIsolate(NULL, NULL, NULL, &err);
+  EXPECT(test_isolate != NULL);
+  Dart_EnterScope();
+  uint8_t* buffer = NULL;
+  intptr_t size = 0;
+  Dart_Handle result = Dart_CreateSnapshot(&buffer, &size);
+  EXPECT(!Dart_IsError(result));
+  Timer timer(true, "Core Isolate startup benchmark");
+  timer.Start();
+  for (int i = 0; i < kNumIterations; i++) {
+    Dart_Isolate new_isolate = Dart_CreateIsolate(NULL, buffer, NULL, &err);
+    EXPECT(new_isolate != NULL);
+    Dart_ShutdownIsolate();
+  }
+  timer.Stop();
+  Dart_EnterIsolate(test_isolate);
+  Dart_ExitScope();
+  Dart_ShutdownIsolate();
+  Dart_EnterIsolate(base_isolate);
+  int64_t elapsed_time = timer.TotalElapsedTime();
+  benchmark->set_score(elapsed_time / kNumIterations);
+}
+
+}  // namespace dart