Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/compiler/abstractCompiler.cpp@f90c822e73f8 (annotated)
src/share/vm/compiler/abstractCompiler.cpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | // |
| aoqi@0 | 2 | // Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | // |
| aoqi@0 | 5 | // This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | // under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | // published by the Free Software Foundation. |
| aoqi@0 | 8 | // |
| aoqi@0 | 9 | // This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | // version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | // accompanied this code). |
| aoqi@0 | 14 | // |
| aoqi@0 | 15 | // You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | // 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | // Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | // |
| aoqi@0 | 19 | // Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | // or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | // questions. |
| aoqi@0 | 22 | // |
| aoqi@0 | 23 | |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #include "precompiled.hpp" |
| aoqi@0 | 26 | #include "compiler/abstractCompiler.hpp" |
| aoqi@0 | 27 | #include "compiler/compileBroker.hpp" |
| aoqi@0 | 28 | #include "runtime/mutexLocker.hpp" |
| aoqi@0 | 29 | |
| aoqi@0 | 30 | bool AbstractCompiler::should_perform_init() { |
| aoqi@0 | 31 | if (_compiler_state != initialized) { |
| aoqi@0 | 32 | MutexLocker only_one(CompileThread_lock); |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | if (_compiler_state == uninitialized) { |
| aoqi@0 | 35 | _compiler_state = initializing; |
| aoqi@0 | 36 | return true; |
| aoqi@0 | 37 | } else { |
| aoqi@0 | 38 | while (_compiler_state == initializing) { |
| aoqi@0 | 39 | CompileThread_lock->wait(); |
| aoqi@0 | 40 | } |
| aoqi@0 | 41 | } |
| aoqi@0 | 42 | } |
| aoqi@0 | 43 | return false; |
| aoqi@0 | 44 | } |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | bool AbstractCompiler::should_perform_shutdown() { |
| aoqi@0 | 47 | // Since this method can be called by multiple threads, the lock ensures atomicity of |
| aoqi@0 | 48 | // decrementing '_num_compiler_threads' and the following operations. |
| aoqi@0 | 49 | MutexLocker only_one(CompileThread_lock); |
| aoqi@0 | 50 | _num_compiler_threads--; |
| aoqi@0 | 51 | assert (CompileBroker::is_compilation_disabled_forever(), "Must be set, otherwise thread waits forever"); |
| aoqi@0 | 52 | |
| aoqi@0 | 53 | // Only the last thread will perform shutdown operations |
| aoqi@0 | 54 | if (_num_compiler_threads == 0) { |
| aoqi@0 | 55 | return true; |
| aoqi@0 | 56 | } |
| aoqi@0 | 57 | return false; |
| aoqi@0 | 58 | } |
| aoqi@0 | 59 | |
| aoqi@0 | 60 | void AbstractCompiler::set_state(int state) { |
| aoqi@0 | 61 | // Ensure that ste is only set by one thread at a time |
| aoqi@0 | 62 | MutexLocker only_one(CompileThread_lock); |
| aoqi@0 | 63 | _compiler_state = state; |
| aoqi@0 | 64 | CompileThread_lock->notify_all(); |
| aoqi@0 | 65 | } |
