duke@435: //
mikael@6198: // Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435: // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435: //
duke@435: // This code is free software; you can redistribute it and/or modify it
duke@435: // under the terms of the GNU General Public License version 2 only, as
duke@435: // published by the Free Software Foundation.
duke@435: //
duke@435: // This code is distributed in the hope that it will be useful, but WITHOUT
duke@435: // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435: // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435: // version 2 for more details (a copy is included in the LICENSE file that
duke@435: // accompanied this code).
duke@435: //
duke@435: // You should have received a copy of the GNU General Public License version
duke@435: // 2 along with this work; if not, write to the Free Software Foundation,
duke@435: // Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435: //
trims@1907: // Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907: // or visit www.oracle.com if you need additional information or have any
trims@1907: // questions.
duke@435: //
duke@435: 
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "compiler/abstractCompiler.hpp"
anoll@5919: #include "compiler/compileBroker.hpp"
stefank@2314: #include "runtime/mutexLocker.hpp"
duke@435: 
anoll@5919: bool AbstractCompiler::should_perform_init() {
anoll@5919:   if (_compiler_state != initialized) {
anoll@5919:     MutexLocker only_one(CompileThread_lock);
anoll@5919: 
anoll@5919:     if (_compiler_state == uninitialized) {
anoll@5919:       _compiler_state = initializing;
anoll@5919:       return true;
anoll@5919:     } else {
anoll@5919:       while (_compiler_state == initializing) {
anoll@5919:         CompileThread_lock->wait();
duke@435:       }
duke@435:     }
anoll@5919:   }
anoll@5919:   return false;
anoll@5919: }
duke@435: 
anoll@5919: bool AbstractCompiler::should_perform_shutdown() {
anoll@5919:   // Since this method can be called by multiple threads, the lock ensures atomicity of
anoll@5919:   // decrementing '_num_compiler_threads' and the following operations.
anoll@5919:   MutexLocker only_one(CompileThread_lock);
anoll@5919:   _num_compiler_threads--;
anoll@5919:   assert (CompileBroker::is_compilation_disabled_forever(), "Must be set, otherwise thread waits forever");
duke@435: 
anoll@5919:   // Only the last thread will perform shutdown operations
anoll@5919:   if (_num_compiler_threads == 0) {
anoll@5919:     return true;
anoll@5919:   }
anoll@5919:   return false;
anoll@5919: }
duke@435: 
anoll@5919: void AbstractCompiler::set_state(int state) {
anoll@5919:   // Ensure that ste is only set by one thread at a time
anoll@5919:   MutexLocker only_one(CompileThread_lock);
anoll@5919:   _compiler_state =  state;
anoll@5919:   CompileThread_lock->notify_all();
duke@435: }