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