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src/share/vm/gc/g1/suspendibleThreadSet.cpp

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rev 8362 : [mq]: hotspot


   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc_implementation/shared/suspendibleThreadSet.hpp"
  27 #include "runtime/mutexLocker.hpp"
  28 #include "runtime/thread.inline.hpp"
  29 
  30 uint   SuspendibleThreadSet::_nthreads          = 0;
  31 uint   SuspendibleThreadSet::_nthreads_stopped  = 0;
  32 bool   SuspendibleThreadSet::_suspend_all       = false;
  33 double SuspendibleThreadSet::_suspend_all_start = 0.0;
  34 
  35 void SuspendibleThreadSet::join() {
  36   assert(!Thread::current()->is_suspendible_thread(), "Thread already joined");
  37   MonitorLockerEx ml(STS_lock, Mutex::_no_safepoint_check_flag);
  38   while (_suspend_all) {
  39     ml.wait(Mutex::_no_safepoint_check_flag);
  40   }
  41   _nthreads++;
  42   DEBUG_ONLY(Thread::current()->set_suspendible_thread();)
  43 }
  44 
  45 void SuspendibleThreadSet::leave() {
  46   assert(Thread::current()->is_suspendible_thread(), "Thread not joined");




   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "gc/g1/suspendibleThreadSet.hpp"
  27 #include "runtime/mutexLocker.hpp"
  28 #include "runtime/thread.inline.hpp"
  29 
  30 uint   SuspendibleThreadSet::_nthreads          = 0;
  31 uint   SuspendibleThreadSet::_nthreads_stopped  = 0;
  32 bool   SuspendibleThreadSet::_suspend_all       = false;
  33 double SuspendibleThreadSet::_suspend_all_start = 0.0;
  34 
  35 void SuspendibleThreadSet::join() {
  36   assert(!Thread::current()->is_suspendible_thread(), "Thread already joined");
  37   MonitorLockerEx ml(STS_lock, Mutex::_no_safepoint_check_flag);
  38   while (_suspend_all) {
  39     ml.wait(Mutex::_no_safepoint_check_flag);
  40   }
  41   _nthreads++;
  42   DEBUG_ONLY(Thread::current()->set_suspendible_thread();)
  43 }
  44 
  45 void SuspendibleThreadSet::leave() {
  46   assert(Thread::current()->is_suspendible_thread(), "Thread not joined");


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