[WIP] Added CodeEventListener to the sampler API.

src/log.cc

 // Copyright 2011 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.
 
 #include <stdarg.h>
 
 #include "src/v8.h"
 
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
@@ skipping 1847 matching lines @@
       tag = Logger::STORE_IC_TAG;
       break;
     case Code::KEYED_STORE_IC:
       description = "A keyed store IC from the snapshot";
       tag = Logger::KEYED_STORE_IC_TAG;
       break;
     case Code::NUMBER_OF_KINDS:
       break;
   }
   PROFILE(isolate_, CodeCreateEvent(tag, code_object, description));
+  isolate_->CodeCreateEvent(code_object, description);
 }
 
 
 void Logger::LogCodeObjects() {
   Heap* heap = isolate_->heap();
   heap->CollectAllGarbage(Heap::kMakeHeapIterableMask,
                           "Logger::LogCodeObjects");
   HeapIterator iterator(heap);
   DisallowHeapAllocation no_gc;
   for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
@@ skipping 11 matching lines @@
     int column_num =
         Script::GetColumnNumber(script, shared->start_position()) + 1;
     if (script->name()->IsString()) {
       Handle<String> script_name(String::cast(script->name()));
       if (line_num > 0) {
         PROFILE(isolate_,
                 CodeCreateEvent(
                     Logger::ToNativeByScript(Logger::LAZY_COMPILE_TAG, *script),
                     *code, *shared, NULL,
                     *script_name, line_num, column_num));
+        isolate_->CodeCreateEvent(*code, *shared, *script_name,
+                                  line_num, column_num);
       } else {
         // Can't distinguish eval and script here, so always use Script.
         PROFILE(isolate_,
                 CodeCreateEvent(
                     Logger::ToNativeByScript(Logger::SCRIPT_TAG, *script),
                     *code, *shared, NULL, *script_name));
+        isolate_->CodeCreateEvent(*code, *script_name);
       }
     } else {
       PROFILE(isolate_,
               CodeCreateEvent(
                   Logger::ToNativeByScript(Logger::LAZY_COMPILE_TAG, *script),
                   *code, *shared, NULL,
                   isolate_->heap()->empty_string(), line_num, column_num));
+      isolate_->CodeCreateEvent(*code, *shared,
+                                isolate_->heap()->empty_string(),
+                                line_num, column_num);
     }
   } else if (shared->IsApiFunction()) {
     // API function.
     FunctionTemplateInfo* fun_data = shared->get_api_func_data();
     Object* raw_call_data = fun_data->call_code();
     if (!raw_call_data->IsUndefined()) {
       CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data);
       Object* callback_obj = call_data->callback();
       Address entry_point = v8::ToCData<Address>(callback_obj);
       PROFILE(isolate_, CallbackEvent(*func_name, entry_point));
+      isolate_->CodeCreateEvent(entry_point, "", *func_name);
     }
   } else {
     PROFILE(isolate_,
             CodeCreateEvent(
                 Logger::LAZY_COMPILE_TAG, *code, *shared, NULL, *func_name));
+    isolate_->CodeCreateEvent(*code, *func_name);
   }
 }
 
 
 void Logger::LogCompiledFunctions() {
   Heap* heap = isolate_->heap();
   heap->CollectAllGarbage(Heap::kMakeHeapIterableMask,
                           "Logger::LogCompiledFunctions");
   HandleScope scope(isolate_);
   const int compiled_funcs_count = EnumerateCompiledFunctions(heap, NULL, NULL);
@@ skipping 19 matching lines @@
   HeapIterator iterator(heap);
   DisallowHeapAllocation no_gc;
   for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
     if (!obj->IsExecutableAccessorInfo()) continue;
     ExecutableAccessorInfo* ai = ExecutableAccessorInfo::cast(obj);
     if (!ai->name()->IsName()) continue;
     Address getter_entry = v8::ToCData<Address>(ai->getter());
     Name* name = Name::cast(ai->name());
     if (getter_entry != 0) {
       PROFILE(isolate_, GetterCallbackEvent(name, getter_entry));
+      isolate_->CodeCreateEvent(getter_entry, "get ", name);
     }
     Address setter_entry = v8::ToCData<Address>(ai->setter());
     if (setter_entry != 0) {
       PROFILE(isolate_, SetterCallbackEvent(name, setter_entry));
+      isolate_->CodeCreateEvent(setter_entry, "set ", name);
     }
   }
 }
 
 
 static void AddIsolateIdIfNeeded(Isolate* isolate, StringStream* stream) {
   if (FLAG_logfile_per_isolate) stream->Add("isolate-%p-", isolate);
 }
 
 
@@ skipping 73 matching lines @@
   if (Log::InitLogAtStart()) {
     is_logging_ = true;
   }
 
   if (FLAG_prof) {
     profiler_ = new Profiler(isolate);
     is_logging_ = true;
     profiler_->Engage();
   }
 
+  // TODO(gholap): This one's for the new sampler API. (include/v8-sampler.h)
+  //               Call to IncreaseProfilingDepth causes the
+  //               SIGPROF signal handler to be installed on the VM thread.
+  //               Figure out whether there's a way to only optionally
+  //               do this based on a runtime flag.
+  ticker_->IncreaseProfilingDepth();
+
   if (FLAG_log_internal_timer_events || FLAG_prof) timer_.Start();
 
   return true;
 }
 
 
 void Logger::SetCodeEventHandler(uint32_t options,
                                  JitCodeEventHandler event_handler) {
   if (jit_logger_) {
       removeCodeEventListener(jit_logger_);
@@ skipping 53 matching lines @@
   if (jit_logger_) {
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
   return log_->Close();
 }
 
 } }  // namespace v8::internal