src/share/vm/compiler/abstractCompiler.cpp

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   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 "compiler/abstractCompiler.hpp"
  27 #include "runtime/mutexLocker.hpp"
  28 void AbstractCompiler::initialize_runtimes(initializer f, volatile int* state) {
  29   if (*state != initialized) {
  30 
  31     // We are thread in native here...
  32     CompilerThread* thread = CompilerThread::current();
  33     bool do_initialization = false;
  34     {
  35       ThreadInVMfromNative tv(thread);
  36       ResetNoHandleMark rnhm;
  37       MutexLocker only_one(CompileThread_lock, thread);
  38       if ( *state == uninitialized) {
  39         do_initialization = true;
  40         *state = initializing;
  41       } else {
  42         while (*state == initializing ) {
  43           CompileThread_lock->wait();
  44         }
  45       }
  46     }
  47     if (do_initialization) {
  48       // We can not hold any locks here since JVMTI events may call agents
  49 
  50       // Compiler(s) run as native
  51 
  52       (*f)();







  53 
  54       // To in_vm so we can use the lock





  55 
  56       ThreadInVMfromNative tv(thread);
  57       ResetNoHandleMark rnhm;
  58       MutexLocker only_one(CompileThread_lock, thread);
  59       assert(*state == initializing, "wrong state");
  60       *state = initialized;
  61       CompileThread_lock->notify_all();
  62     }
  63   }
  64 }


   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 "compiler/abstractCompiler.hpp"
  27 #include "runtime/mutexLocker.hpp"


  28 
  29 bool AbstractCompiler::should_perform_init() {
  30   if (_compiler_state != initialized) {
  31     MutexLocker 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         CompileThread_lock->wait();
  39       }
  40     }
  41   }
  42   return false;
  43 }


  44 
  45 bool AbstractCompiler::should_perform_shutdown() {
  46   MutexLocker only_one(CompileThread_lock);
  47   _num_compiler_threads--;
  48   // Set state to shutting_down
  49   if (_compiler_state == failed) {
  50     assert (CompileBroker::is_compilation_disabled_forever(), " Must be set, otherwise thread waits forever");
  51     _compiler_state = shutting_shown;
  52   }
  53 
  54   // Only the last thread will perform shutdown operations
  55   if (_num_compiler_threads == 0) {
  56     return true;
  57   }
  58   return false;
  59 }
  60 
  61 void AbstractCompiler::set_state(int state) {
  62   MutexLocker only_one(CompileThread_lock);
  63   _compiler_state =  state;


  64   CompileThread_lock->notify_all();


  65 }