37 int  ConcurrentGCThread::_CGC_flag            = CGC_nil;
  38 
  39 SuspendibleThreadSet ConcurrentGCThread::_sts;
  40 
  41 ConcurrentGCThread::ConcurrentGCThread() :
  42   _should_terminate(false), _has_terminated(false) {
  43   _sts.initialize();
  44 };
  45 
  46 void ConcurrentGCThread::safepoint_synchronize() {
  47   _sts.suspend_all();
  48 }
  49 
  50 void ConcurrentGCThread::safepoint_desynchronize() {
  51   _sts.resume_all();
  52 }
  53 
  54 void ConcurrentGCThread::create_and_start() {
  55   if (os::create_thread(this, os::cgc_thread)) {
  56     // XXX: need to set this to low priority
  57     // unless "agressive mode" set; priority
  58     // should be just less than that of VMThread.
  59     os::set_priority(this, NearMaxPriority);
  60     if (!_should_terminate && !DisableStartThread) {
  61       os::start_thread(this);
  62     }
  63   }
  64 }
  65 
  66 void ConcurrentGCThread::initialize_in_thread() {
  67   this->record_stack_base_and_size();
  68   this->initialize_thread_local_storage();
  69   this->set_active_handles(JNIHandleBlock::allocate_block());
  70   // From this time Thread::current() should be working.
  71   assert(this == Thread::current(), "just checking");
  72 }
  73 
  74 void ConcurrentGCThread::wait_for_universe_init() {
  75   MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
  76   while (!is_init_completed() && !_should_terminate) {
  77     CGC_lock->wait(Mutex::_no_safepoint_check_flag, 200);

  37 int  ConcurrentGCThread::_CGC_flag            = CGC_nil;
  38 
  39 SuspendibleThreadSet ConcurrentGCThread::_sts;
  40 
  41 ConcurrentGCThread::ConcurrentGCThread() :
  42   _should_terminate(false), _has_terminated(false) {
  43   _sts.initialize();
  44 };
  45 
  46 void ConcurrentGCThread::safepoint_synchronize() {
  47   _sts.suspend_all();
  48 }
  49 
  50 void ConcurrentGCThread::safepoint_desynchronize() {
  51   _sts.resume_all();
  52 }
  53 
  54 void ConcurrentGCThread::create_and_start() {
  55   if (os::create_thread(this, os::cgc_thread)) {
  56     // XXX: need to set this to low priority
  57     // unless "aggressive mode" set; priority
  58     // should be just less than that of VMThread.
  59     os::set_priority(this, NearMaxPriority);
  60     if (!_should_terminate && !DisableStartThread) {
  61       os::start_thread(this);
  62     }
  63   }
  64 }
  65 
  66 void ConcurrentGCThread::initialize_in_thread() {
  67   this->record_stack_base_and_size();
  68   this->initialize_thread_local_storage();
  69   this->set_active_handles(JNIHandleBlock::allocate_block());
  70   // From this time Thread::current() should be working.
  71   assert(this == Thread::current(), "just checking");
  72 }
  73 
  74 void ConcurrentGCThread::wait_for_universe_init() {
  75   MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag);
  76   while (!is_init_completed() && !_should_terminate) {
  77     CGC_lock->wait(Mutex::_no_safepoint_check_flag, 200);