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src/hotspot/share/gc/cms/vmCMSOperations.cpp

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  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/cms/cmsHeap.hpp"
  27 #include "gc/cms/concurrentMarkSweepGeneration.inline.hpp"
  28 #include "gc/cms/concurrentMarkSweepThread.hpp"
  29 #include "gc/cms/vmCMSOperations.hpp"
  30 #include "gc/shared/gcLocker.inline.hpp"
  31 #include "gc/shared/gcTimer.hpp"
  32 #include "gc/shared/gcTraceTime.inline.hpp"
  33 #include "gc/shared/isGCActiveMark.hpp"
  34 #include "runtime/handles.inline.hpp"
  35 #include "runtime/interfaceSupport.inline.hpp"
  36 #include "runtime/os.hpp"
  37 #include "utilities/dtrace.hpp"
  38 
  39 //////////////////////////////////////////////////////////
  40 // Methods in abstract class VM_CMS_Operation
  41 //////////////////////////////////////////////////////////
  42 void VM_CMS_Operation::verify_before_gc() {
  43   if (VerifyBeforeGC &&
  44       CMSHeap::heap()->total_collections() >= VerifyGCStartAt) {
  45     GCTraceTime(Info, gc, phases, verify) tm("Verify Before", _collector->_gc_timer_cm);
  46     HandleMark hm;
  47     FreelistLocker x(_collector);
  48     MutexLockerEx  y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
  49     CMSHeap::heap()->prepare_for_verify();
  50     Universe::verify();




  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/cms/cmsHeap.hpp"
  27 #include "gc/cms/concurrentMarkSweepGeneration.inline.hpp"
  28 #include "gc/cms/concurrentMarkSweepThread.hpp"
  29 #include "gc/cms/vmCMSOperations.hpp"
  30 #include "gc/shared/gcLocker.hpp"
  31 #include "gc/shared/gcTimer.hpp"
  32 #include "gc/shared/gcTraceTime.inline.hpp"
  33 #include "gc/shared/isGCActiveMark.hpp"
  34 #include "runtime/handles.inline.hpp"
  35 #include "runtime/interfaceSupport.inline.hpp"
  36 #include "runtime/os.hpp"
  37 #include "utilities/dtrace.hpp"
  38 
  39 //////////////////////////////////////////////////////////
  40 // Methods in abstract class VM_CMS_Operation
  41 //////////////////////////////////////////////////////////
  42 void VM_CMS_Operation::verify_before_gc() {
  43   if (VerifyBeforeGC &&
  44       CMSHeap::heap()->total_collections() >= VerifyGCStartAt) {
  45     GCTraceTime(Info, gc, phases, verify) tm("Verify Before", _collector->_gc_timer_cm);
  46     HandleMark hm;
  47     FreelistLocker x(_collector);
  48     MutexLockerEx  y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
  49     CMSHeap::heap()->prepare_for_verify();
  50     Universe::verify();


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