1 /*
2 * Copyright (c) 2005, 2013, 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_UTILITIES_YIELDINGWORKGROUP_HPP
26 #define SHARE_VM_UTILITIES_YIELDINGWORKGROUP_HPP
27
28 #include "utilities/macros.hpp"
29 #include "utilities/workgroup.hpp"
30
31 // Forward declarations
32 class YieldingFlexibleWorkGang;
33
34 // Status of tasks
35 enum Status {
36 INACTIVE,
37 ACTIVE,
38 YIELDING,
39 YIELDED,
40 ABORTING,
41 ABORTED,
42 COMPLETING,
43 COMPLETED
44 };
45
46 // Class YieldingFlexibleGangWorker:
47 // Several instances of this class run in parallel as workers for a gang.
48 class YieldingFlexibleGangWorker: public GangWorker {
49 public:
194 // Abort: workers are expected to return to their waiting
195 // stations, whence they are ready for the next task dispatched
196 // by the overseer.
197 void abort();
198
199 private:
200 uint _yielded_workers;
201 void wait_for_gang();
202
203 public:
204 // Accessors for fields
205 uint yielded_workers() const {
206 return _yielded_workers;
207 }
208
209 private:
210 friend class YieldingFlexibleGangWorker;
211 void reset(); // NYI
212 };
213
214 #endif // SHARE_VM_UTILITIES_YIELDINGWORKGROUP_HPP
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1 /*
2 * Copyright (c) 2005, 2015, 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_CMS_YIELDINGWORKGROUP_HPP
26 #define SHARE_VM_GC_CMS_YIELDINGWORKGROUP_HPP
27
28 #include "gc/shared/workgroup.hpp"
29 #include "utilities/macros.hpp"
30
31 // Forward declarations
32 class YieldingFlexibleWorkGang;
33
34 // Status of tasks
35 enum Status {
36 INACTIVE,
37 ACTIVE,
38 YIELDING,
39 YIELDED,
40 ABORTING,
41 ABORTED,
42 COMPLETING,
43 COMPLETED
44 };
45
46 // Class YieldingFlexibleGangWorker:
47 // Several instances of this class run in parallel as workers for a gang.
48 class YieldingFlexibleGangWorker: public GangWorker {
49 public:
194 // Abort: workers are expected to return to their waiting
195 // stations, whence they are ready for the next task dispatched
196 // by the overseer.
197 void abort();
198
199 private:
200 uint _yielded_workers;
201 void wait_for_gang();
202
203 public:
204 // Accessors for fields
205 uint yielded_workers() const {
206 return _yielded_workers;
207 }
208
209 private:
210 friend class YieldingFlexibleGangWorker;
211 void reset(); // NYI
212 };
213
214 #endif // SHARE_VM_GC_CMS_YIELDINGWORKGROUP_HPP
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