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src/share/vm/gc/shared/gcId.cpp

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   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/shared/gcId.hpp"
  27 #include "runtime/safepoint.hpp"
  28 #include "runtime/thread.inline.hpp"
  29 
  30 uint GCId::_next_id = 0;
  31 
  32 NamedThread* currentNamedthread() {
  33   assert(Thread::current()->is_Named_thread(), "This thread must be NamedThread");
  34   return (NamedThread*)Thread::current();
  35 }
  36 
  37 const uint GCId::create() {
  38   return _next_id++;
  39 }
  40 
  41 const uint GCId::current() {
  42   assert(currentNamedthread()->gc_id() != undefined(), "Using undefined GC id.");
  43   return current_raw();
  44 }
  45 
  46 const uint GCId::current_raw() {
  47   return currentNamedthread()->gc_id();
  48 }
  49 
  50 GCIdMark::GCIdMark() : _gc_id(GCId::create()) {
  51   currentNamedthread()->set_gc_id(_gc_id);
  52 }
  53 
  54 GCIdMark::GCIdMark(uint gc_id) : _gc_id(gc_id) {
  55   currentNamedthread()->set_gc_id(_gc_id);



  56 }
  57 
  58 GCIdMark::~GCIdMark() {
  59   currentNamedthread()->set_gc_id(GCId::undefined());

  60 }
  61 


   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/shared/gcId.hpp"


  27 
  28 uint GCId::_next_id = 0;
  29 uint GCId::_current_id = UNDEFINED;




  30 
  31 const uint GCId::create() {
  32   return _next_id++;
  33 }
  34 
  35 const uint GCId::current() {
  36   assert(_current_id != UNDEFINED, "Using undefined GC ID");
  37   return _current_id;








  38 }
  39 
  40 GCIdMark::GCIdMark() {
  41   _previous_gc_id = GCId::_current_id;
  42   uint gc_id = GCId::create();
  43   GCId::set_current(gc_id);
  44   DEBUG_ONLY(_gc_id = gc_id;)
  45 }
  46 
  47 GCIdMark::~GCIdMark() {
  48   assert(_gc_id == GCId::_current_id, err_msg("GCIdMarks for %u and %u overlap.", _gc_id, GCId::_current_id));
  49   GCId::set_current(_previous_gc_id);
  50 }
  51 
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