1 //
   2 // Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
   3 // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4 //
   5 // This code is free software; you can redistribute it and/or modify it
   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 "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 }