Remove parallel marking support.

src/marking-thread.cc

Index: src/marking-thread.cc
diff --git a/src/marking-thread.cc b/src/marking-thread.cc
deleted file mode 100644
index 58bca3662dd342b819bfdb002863dec25afc270e..0000000000000000000000000000000000000000
--- a/src/marking-thread.cc
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2013 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
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "marking-thread.h"
-
-#include "v8.h"
-
-#include "isolate.h"
-#include "v8threads.h"
-
-namespace v8 {
-namespace internal {
-
-MarkingThread::MarkingThread(Isolate* isolate)
-     : Thread("MarkingThread"),
-       isolate_(isolate),
-       heap_(isolate->heap()),
-       start_marking_semaphore_(0),
-       end_marking_semaphore_(0),
-       stop_semaphore_(0) {
-  NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false));
-  id_ = NoBarrier_AtomicIncrement(&id_counter_, 1);
-}
-
-
-Atomic32 MarkingThread::id_counter_ = -1;
-
-
-void MarkingThread::Run() {
-  Isolate::SetIsolateThreadLocals(isolate_, NULL);
-  DisallowHeapAllocation no_allocation;
-  DisallowHandleAllocation no_handles;
-  DisallowHandleDereference no_deref;
-
-  while (true) {
-    start_marking_semaphore_.Wait();
-
-    if (Acquire_Load(&stop_thread_)) {
-      stop_semaphore_.Signal();
-      return;
-    }
-
-    end_marking_semaphore_.Signal();
-  }
-}
-
-
-void MarkingThread::Stop() {
-  Release_Store(&stop_thread_, static_cast<AtomicWord>(true));
-  start_marking_semaphore_.Signal();
-  stop_semaphore_.Wait();
-  Join();
-}
-
-
-void MarkingThread::StartMarking() {
-  start_marking_semaphore_.Signal();
-}
-
-
-void MarkingThread::WaitForMarkingThread() {
-  end_marking_semaphore_.Wait();
-}
-
-} }  // namespace v8::internal