1 /*
2 * Copyright (c) 2001, 2009, 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 class VoidClosure;
26
27 // A SuspendibleThreadSet is (obviously) a set of threads that can be
28 // suspended. A thread can join and later leave the set, and periodically
29 // yield. If some thread (not in the set) requests, via suspend_all, that
30 // the threads be suspended, then the requesting thread is blocked until
31 // all the threads in the set have yielded or left the set. (Threads may
32 // not enter the set when an attempted suspension is in progress.) The
33 // suspending thread later calls resume_all, allowing the suspended threads
34 // to continue.
35
36 class SuspendibleThreadSet {
37 Monitor* _m;
38 int _async;
39 bool _async_stop;
40 int _async_stopped;
41 bool _initialized;
42 double _suspend_all_start;
43
44 void initialize_work();
148 releaseAndNotifyPLL // notify and release pending list lock
149 };
150 private:
151 // the following are shared with the CMSThread
152 SLT_msg_type _buffer; // communication buffer
153 Monitor _monitor; // monitor controlling buffer
154 BasicLock _basicLock; // used for PLL locking
155
156 public:
157 static SurrogateLockerThread* make(TRAPS);
158
159 SurrogateLockerThread();
160
161 bool is_hidden_from_external_view() const { return true; }
162
163 void loop(); // main method
164
165 void manipulatePLL(SLT_msg_type msg);
166
167 };
|
1 /*
2 * Copyright (c) 2001, 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 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_CONCURRENTGCTHREAD_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_CONCURRENTGCTHREAD_HPP
27
28 #ifndef SERIALGC
29 #include "runtime/thread.hpp"
30 #endif
31
32 class VoidClosure;
33
34 // A SuspendibleThreadSet is (obviously) a set of threads that can be
35 // suspended. A thread can join and later leave the set, and periodically
36 // yield. If some thread (not in the set) requests, via suspend_all, that
37 // the threads be suspended, then the requesting thread is blocked until
38 // all the threads in the set have yielded or left the set. (Threads may
39 // not enter the set when an attempted suspension is in progress.) The
40 // suspending thread later calls resume_all, allowing the suspended threads
41 // to continue.
42
43 class SuspendibleThreadSet {
44 Monitor* _m;
45 int _async;
46 bool _async_stop;
47 int _async_stopped;
48 bool _initialized;
49 double _suspend_all_start;
50
51 void initialize_work();
155 releaseAndNotifyPLL // notify and release pending list lock
156 };
157 private:
158 // the following are shared with the CMSThread
159 SLT_msg_type _buffer; // communication buffer
160 Monitor _monitor; // monitor controlling buffer
161 BasicLock _basicLock; // used for PLL locking
162
163 public:
164 static SurrogateLockerThread* make(TRAPS);
165
166 SurrogateLockerThread();
167
168 bool is_hidden_from_external_view() const { return true; }
169
170 void loop(); // main method
171
172 void manipulatePLL(SLT_msg_type msg);
173
174 };
175
176 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_CONCURRENTGCTHREAD_HPP
|