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 ConcurrentMarkSweepGeneration;
26 class CMSCollector;
27
28 // The Concurrent Mark Sweep GC Thread (could be several in the future).
29 class ConcurrentMarkSweepThread: public ConcurrentGCThread {
30 friend class VMStructs;
31 friend class ConcurrentMarkSweepGeneration; // XXX should remove friendship
32 friend class CMSCollector;
33 public:
34 virtual void run();
35
36 private:
37 static ConcurrentMarkSweepThread* _cmst;
38 static CMSCollector* _collector;
39 static SurrogateLockerThread* _slt;
40 static SurrogateLockerThread::SLT_msg_type _sltBuffer;
41 static Monitor* _sltMonitor;
42
43 ConcurrentMarkSweepThread* _next;
44
232 // looping (in "apparently endless loops") in CMS code.
233 class CMSLoopCountWarn: public StackObj {
234 private:
235 const char* _src;
236 const char* _msg;
237 const intx _threshold;
238 intx _ticks;
239
240 public:
241 inline CMSLoopCountWarn(const char* src, const char* msg,
242 const intx threshold) :
243 _src(src), _msg(msg), _threshold(threshold), _ticks(0) { }
244
245 inline void tick() {
246 _ticks++;
247 if (CMSLoopWarn && _ticks % _threshold == 0) {
248 warning("%s has looped %d times %s", _src, _ticks, _msg);
249 }
250 }
251 };
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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_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPTHREAD_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPTHREAD_HPP
27
28 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp"
29 #include "gc_implementation/shared/concurrentGCThread.hpp"
30 #ifdef TARGET_OS_FAMILY_linux
31 # include "thread_linux.inline.hpp"
32 #endif
33 #ifdef TARGET_OS_FAMILY_solaris
34 # include "thread_solaris.inline.hpp"
35 #endif
36 #ifdef TARGET_OS_FAMILY_windows
37 # include "thread_windows.inline.hpp"
38 #endif
39
40 class ConcurrentMarkSweepGeneration;
41 class CMSCollector;
42
43 // The Concurrent Mark Sweep GC Thread (could be several in the future).
44 class ConcurrentMarkSweepThread: public ConcurrentGCThread {
45 friend class VMStructs;
46 friend class ConcurrentMarkSweepGeneration; // XXX should remove friendship
47 friend class CMSCollector;
48 public:
49 virtual void run();
50
51 private:
52 static ConcurrentMarkSweepThread* _cmst;
53 static CMSCollector* _collector;
54 static SurrogateLockerThread* _slt;
55 static SurrogateLockerThread::SLT_msg_type _sltBuffer;
56 static Monitor* _sltMonitor;
57
58 ConcurrentMarkSweepThread* _next;
59
247 // looping (in "apparently endless loops") in CMS code.
248 class CMSLoopCountWarn: public StackObj {
249 private:
250 const char* _src;
251 const char* _msg;
252 const intx _threshold;
253 intx _ticks;
254
255 public:
256 inline CMSLoopCountWarn(const char* src, const char* msg,
257 const intx threshold) :
258 _src(src), _msg(msg), _threshold(threshold), _ticks(0) { }
259
260 inline void tick() {
261 _ticks++;
262 if (CMSLoopWarn && _ticks % _threshold == 0) {
263 warning("%s has looped %d times %s", _src, _ticks, _msg);
264 }
265 }
266 };
267
268 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPTHREAD_HPP
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