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src/hotspot/share/compiler/abstractCompiler.cpp

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rev 56464 : 8231707: Improve Mutex inlining
Contributed-by: robbin.ehn@oracle.com, claes.redestad@oracle.com


   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 #include "precompiled.hpp"
  25 #include "compiler/abstractCompiler.hpp"
  26 #include "compiler/compileBroker.hpp"
  27 #include "runtime/mutexLocker.hpp"
  28 
  29 bool AbstractCompiler::should_perform_init() {
  30   if (_compiler_state != initialized) {
  31     MonitorLocker only_one(CompileThread_lock);
  32 
  33     if (_compiler_state == uninitialized) {
  34       _compiler_state = initializing;
  35       return true;
  36     } else {
  37       while (_compiler_state == initializing) {
  38         only_one.wait();
  39       }
  40     }
  41   }
  42   return false;
  43 }
  44 
  45 bool AbstractCompiler::should_perform_shutdown() {
  46   // Since this method can be called by multiple threads, the lock ensures atomicity of
  47   // decrementing '_num_compiler_threads' and the following operations.


   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 #include "precompiled.hpp"
  25 #include "compiler/abstractCompiler.hpp"
  26 #include "compiler/compileBroker.hpp"
  27 #include "runtime/mutexLocker.inline.hpp"
  28 
  29 bool AbstractCompiler::should_perform_init() {
  30   if (_compiler_state != initialized) {
  31     MonitorLocker only_one(CompileThread_lock);
  32 
  33     if (_compiler_state == uninitialized) {
  34       _compiler_state = initializing;
  35       return true;
  36     } else {
  37       while (_compiler_state == initializing) {
  38         only_one.wait();
  39       }
  40     }
  41   }
  42   return false;
  43 }
  44 
  45 bool AbstractCompiler::should_perform_shutdown() {
  46   // Since this method can be called by multiple threads, the lock ensures atomicity of
  47   // decrementing '_num_compiler_threads' and the following operations.
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