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 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 }
--- EOF ---