[WIP]Create a V8 sampler library and tracing controller.

src/d8.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 
 // Defined when linking against shared lib on Windows.
 #if defined(USING_V8_SHARED) && !defined(V8_SHARED)
 #define V8_SHARED
 #endif
 
@@ skipping 19 matching lines @@
 #include "src/gdb-jit.h"
 #endif
 
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
 #include "src/third_party/vtune/v8-vtune.h"
 #endif
 
 #include "src/d8.h"
 #include "src/ostreams.h"
 
+#include "include/v8-sampler.h"
+#include "include/v8-tracing-controller.h"
 #include "include/libplatform/libplatform.h"
 #ifndef V8_SHARED
 #include "src/api.h"
 #include "src/base/cpu.h"
 #include "src/base/logging.h"
 #include "src/base/platform/platform.h"
 #include "src/base/sys-info.h"
 #include "src/basic-block-profiler.h"
 #include "src/snapshot/natives.h"
 #include "src/utils.h"
@@ skipping 2391 matching lines @@
 #ifndef V8_SHARED
   g_platform = i::FLAG_verify_predictable
                    ? new PredictablePlatform()
                    : v8::platform::CreateDefaultPlatform();
 #else
   g_platform = v8::platform::CreateDefaultPlatform();
 #endif  // !V8_SHARED
 
   v8::V8::InitializePlatform(g_platform);
   v8::V8::Initialize();
+  // Initialize tracing controller support
+  TracingController::SetUp();
   if (options.natives_blob || options.snapshot_blob) {
     v8::V8::InitializeExternalStartupData(options.natives_blob,
                                           options.snapshot_blob);
   } else {
     v8::V8::InitializeExternalStartupData(argv[0]);
   }
   SetFlagsFromString("--trace-hydrogen-file=hydrogen.cfg");
   SetFlagsFromString("--trace-turbo-cfg-file=turbo.cfg");
   SetFlagsFromString("--redirect-code-traces-to=code.asm");
   int result = 0;
@@ skipping 31 matching lines @@
     Isolate::Scope scope(isolate);
     Initialize(isolate);
     PerIsolateData data(isolate);
 
 #ifndef V8_SHARED
     if (options.dump_heap_constants) {
       DumpHeapConstants(reinterpret_cast<i::Isolate*>(isolate));
       return 0;
     }
 #endif
+    TracingController::StartTracing(isolate);
 
     if (options.stress_opt || options.stress_deopt) {
       Testing::SetStressRunType(options.stress_opt
                                 ? Testing::kStressTypeOpt
                                 : Testing::kStressTypeDeopt);
       options.stress_runs = Testing::GetStressRuns();
       for (int i = 0; i < options.stress_runs && result == 0; i++) {
         printf("============ Stress %d/%d ============\n", i + 1,
                options.stress_runs);
         Testing::PrepareStressRun(i);
@@ skipping 35 matching lines @@
   }
   OnExit(isolate);
 #ifndef V8_SHARED
   // Dump basic block profiling data.
   if (i::BasicBlockProfiler* profiler =
           reinterpret_cast<i::Isolate*>(isolate)->basic_block_profiler()) {
     i::OFStream os(stdout);
     os << *profiler;
   }
 #endif  // !V8_SHARED
+  TracingController::StopTracing();
   isolate->Dispose();
+  TracingController::TearDown();
   V8::Dispose();
   V8::ShutdownPlatform();
   delete g_platform;
 
   return result;
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif