Remove more feature in product mode

runtime/vm/os_thread.cc

 // Copyright (c) 2015, 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/os_thread.h"
 
 #include "vm/atomic.h"
 #include "vm/lockers.h"
 #include "vm/log.h"
 #include "vm/thread_interrupter.h"
@@ skipping 33 matching lines @@
   OSThread* os_thread = new OSThread();
   AddThreadToListLocked(os_thread);
   return os_thread;
 }
 
 
 OSThread::~OSThread() {
   RemoveThreadFromList(this);
   delete log_;
   log_ = NULL;
-  if (Timeline::recorder() != NULL) {
-    Timeline::recorder()->FinishBlock(timeline_block_);
+  if (FLAG_support_timeline) {
+    if (Timeline::recorder() != NULL) {
+      Timeline::recorder()->FinishBlock(timeline_block_);
+    }
   }
   timeline_block_ = NULL;
   delete timeline_block_lock_;
   free(name_);
 }
 
 
 void OSThread::DisableThreadInterrupts() {
   ASSERT(OSThread::Current() == this);
   AtomicOperations::FetchAndIncrement(&thread_interrupt_disabled_);
 }
 
 
 void OSThread::EnableThreadInterrupts() {
   ASSERT(OSThread::Current() == this);
   uintptr_t old =
       AtomicOperations::FetchAndDecrement(&thread_interrupt_disabled_);
-  if (old == 1) {
+  if (FLAG_profiler && (old == 1)) {
     // We just decremented from 1 to 0.
     // Make sure the thread interrupter is awake.
     ThreadInterrupter::WakeUp();
   }
   if (old == 0) {
     // We just decremented from 0, this means we've got a mismatched pair
     // of calls to EnableThreadInterrupts and DisableThreadInterrupts.
     FATAL("Invalid call to OSThread::EnableThreadInterrupts()");
   }
 }
@@ skipping 184 matching lines @@
 
 OSThread* OSThreadIterator::Next() {
   ASSERT(OSThread::thread_list_lock_ != NULL);
   ASSERT(OSThread::thread_list_lock_->IsOwnedByCurrentThread());
   OSThread* current = next_;
   next_ = next_->thread_list_next_;
   return current;
 }
 
 }  // namespace dart