Cleanup extra initialization of TickSample fields.

src/cpu-profiler-inl.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_CPU_PROFILER_INL_H_
 #define V8_CPU_PROFILER_INL_H_
 
 #include "cpu-profiler.h"
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 
+#include <new>
 #include "circular-queue-inl.h"
 #include "profile-generator-inl.h"
 #include "unbound-queue-inl.h"
 
 namespace v8 {
 namespace internal {
 
 void CodeCreateEventRecord::UpdateCodeMap(CodeMap* code_map) {
   code_map->AddCode(start, entry, size);
   if (shared != NULL) {
@@ skipping 10 matching lines @@
 void CodeDeleteEventRecord::UpdateCodeMap(CodeMap* code_map) {
   code_map->DeleteCode(start);
 }
 
 
 void SharedFunctionInfoMoveEventRecord::UpdateCodeMap(CodeMap* code_map) {
   code_map->MoveCode(from, to);
 }
 
 
-TickSampleEventRecord* TickSampleEventRecord::init(void* value) {
-  TickSampleEventRecord* result =
-      reinterpret_cast<TickSampleEventRecord*>(value);
-  result->filler = 1;
-  ASSERT(result->filler != SamplingCircularQueue::kClear);
-  // Init the required fields only.
-  result->sample.pc = NULL;
-  result->sample.frames_count = 0;
-  result->sample.has_external_callback = false;
-  return result;
-}
-
-
 TickSample* ProfilerEventsProcessor::TickSampleEvent() {
   generator_->Tick();
   TickSampleEventRecord* evt =
-      TickSampleEventRecord::init(ticks_buffer_.Enqueue());
+      new(ticks_buffer_.Enqueue()) TickSampleEventRecord();
   evt->order = enqueue_order_;  // No increment!
   return &evt->sample;
 }
 
 
 bool ProfilerEventsProcessor::FilterOutCodeCreateEvent(
     Logger::LogEventsAndTags tag) {
   return FLAG_prof_browser_mode
       && (tag != Logger::CALLBACK_TAG
           && tag != Logger::FUNCTION_TAG
           && tag != Logger::LAZY_COMPILE_TAG
           && tag != Logger::REG_EXP_TAG
           && tag != Logger::SCRIPT_TAG);
 }
 
 } }  // namespace v8::internal
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 #endif  // V8_CPU_PROFILER_INL_H_