Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp @ 8014:f90b9bceb8e5
8005032: G1: Cleanup serial reference processing closures in concurrent marking
Summary: Reuse the parallel reference processing oop closures during serial reference processing.
Reviewed-by: brutisso
author | johnc |
---|---|
date | Tue, 05 Feb 2013 09:13:05 -0800 |
parents | f34d701e952e |
children | a252e688abcf |
rev | line source |
---|---|
0 | 1 /* |
2365
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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" | |
7180
f34d701e952e
8003935: Simplify the needed includes for using Thread::current()
stefank
parents:
3960
diff
changeset
|
30 #include "runtime/thread.inline.hpp" |
1972 | 31 |
0 | 32 class ConcurrentMarkSweepGeneration; |
33 class CMSCollector; | |
34 | |
2365
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
35 // The Concurrent Mark Sweep GC Thread |
0 | 36 class ConcurrentMarkSweepThread: public ConcurrentGCThread { |
37 friend class VMStructs; | |
38 friend class ConcurrentMarkSweepGeneration; // XXX should remove friendship | |
39 friend class CMSCollector; | |
40 public: | |
41 virtual void run(); | |
42 | |
43 private: | |
44 static ConcurrentMarkSweepThread* _cmst; | |
45 static CMSCollector* _collector; | |
46 static SurrogateLockerThread* _slt; | |
47 static SurrogateLockerThread::SLT_msg_type _sltBuffer; | |
48 static Monitor* _sltMonitor; | |
49 | |
50 static bool _should_terminate; | |
51 | |
52 enum CMS_flag_type { | |
53 CMS_nil = NoBits, | |
54 CMS_cms_wants_token = nth_bit(0), | |
55 CMS_cms_has_token = nth_bit(1), | |
56 CMS_vm_wants_token = nth_bit(2), | |
57 CMS_vm_has_token = nth_bit(3) | |
58 }; | |
59 | |
60 static int _CMS_flag; | |
61 | |
62 static bool CMS_flag_is_set(int b) { return (_CMS_flag & b) != 0; } | |
63 static bool set_CMS_flag(int b) { return (_CMS_flag |= b) != 0; } | |
64 static bool clear_CMS_flag(int b) { return (_CMS_flag &= ~b) != 0; } | |
65 void sleepBeforeNextCycle(); | |
66 | |
67 // CMS thread should yield for a young gen collection, direct allocation, | |
68 // and iCMS activity. | |
69 static char _pad_1[64 - sizeof(jint)]; // prevent cache-line sharing | |
70 static volatile jint _pending_yields; | |
71 static volatile jint _pending_decrements; // decrements to _pending_yields | |
72 static char _pad_2[64 - sizeof(jint)]; // prevent cache-line sharing | |
73 | |
74 // Tracing messages, enabled by CMSTraceThreadState. | |
75 static inline void trace_state(const char* desc); | |
76 | |
2365
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
77 static volatile int _icms_disabled; // a counter to track #iCMS disable & enable |
0 | 78 static volatile bool _should_run; // iCMS may run |
79 static volatile bool _should_stop; // iCMS should stop | |
80 | |
81 // debugging | |
82 void verify_ok_to_terminate() const PRODUCT_RETURN; | |
83 | |
84 public: | |
85 // Constructor | |
86 ConcurrentMarkSweepThread(CMSCollector* collector); | |
87 | |
88 static void makeSurrogateLockerThread(TRAPS); | |
89 static SurrogateLockerThread* slt() { return _slt; } | |
90 | |
91 // Tester | |
92 bool is_ConcurrentGC_thread() const { return true; } | |
93 | |
94 static void threads_do(ThreadClosure* tc); | |
95 | |
96 // Printing | |
97 void print_on(outputStream* st) const; | |
98 void print() const { print_on(tty); } | |
99 static void print_all_on(outputStream* st); | |
100 static void print_all() { print_all_on(tty); } | |
101 | |
102 // Returns the CMS Thread | |
103 static ConcurrentMarkSweepThread* cmst() { return _cmst; } | |
104 static CMSCollector* collector() { return _collector; } | |
105 | |
106 // Create and start the CMS Thread, or stop it on shutdown | |
107 static ConcurrentMarkSweepThread* start(CMSCollector* collector); | |
108 static void stop(); | |
109 static bool should_terminate() { return _should_terminate; } | |
110 | |
111 // Synchronization using CMS token | |
112 static void synchronize(bool is_cms_thread); | |
113 static void desynchronize(bool is_cms_thread); | |
114 static bool vm_thread_has_cms_token() { | |
115 return CMS_flag_is_set(CMS_vm_has_token); | |
116 } | |
117 static bool cms_thread_has_cms_token() { | |
118 return CMS_flag_is_set(CMS_cms_has_token); | |
119 } | |
120 static bool vm_thread_wants_cms_token() { | |
121 return CMS_flag_is_set(CMS_vm_wants_token); | |
122 } | |
123 static bool cms_thread_wants_cms_token() { | |
124 return CMS_flag_is_set(CMS_cms_wants_token); | |
125 } | |
126 | |
127 // Wait on CMS lock until the next synchronous GC | |
1887
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1837
diff
changeset
|
128 // or given timeout, whichever is earlier. A timeout value |
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1837
diff
changeset
|
129 // of 0 indicates that there is no upper bound on the wait time. |
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1837
diff
changeset
|
130 // A concurrent full gc request terminates the wait. |
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1837
diff
changeset
|
131 void wait_on_cms_lock(long t_millis); |
0 | 132 |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
133 // The CMS thread will yield during the work portion of its cycle |
0 | 134 // only when requested to. Both synchronous and asychronous requests |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
135 // are provided: |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
136 // (1) A synchronous request is used for young gen collections and |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
137 // for direct allocations. The requesting thread increments |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
138 // _pending_yields at the beginning of an operation, and decrements |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
139 // _pending_yields when that operation is completed. |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
140 // In turn, the CMS thread yields when _pending_yields is positive, |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
141 // and continues to yield until the value reverts to 0. |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
142 // (2) An asynchronous request, on the other hand, is used by iCMS |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
143 // for the stop_icms() operation. A single yield satisfies all of |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
144 // the outstanding asynch yield requests, of which there may |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
145 // occasionally be several in close succession. To accomplish |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
146 // this, an asynch-requesting thread atomically increments both |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
147 // _pending_yields and _pending_decrements. An asynchr requesting |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
148 // thread does not wait and "acknowledge" completion of an operation |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
149 // and deregister the request, like the synchronous version described |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
150 // above does. In turn, after yielding, the CMS thread decrements both |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
151 // _pending_yields and _pending_decrements by the value seen in |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
152 // _pending_decrements before the decrement. |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
153 // NOTE: The above scheme is isomorphic to having two request counters, |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
154 // one for async requests and one for sync requests, and for the CMS thread |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
155 // to check the sum of the two counters to decide whether it should yield |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
156 // and to clear only the async counter when it yields. However, it turns out |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
157 // to be more efficient for CMS code to just check a single counter |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
158 // _pending_yields that holds the sum (of both sync and async requests), and |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
159 // a second counter _pending_decrements that only holds the async requests, |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
160 // for greater efficiency, since in a typical CMS run, there are many more |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
161 // pontential (i.e. static) yield points than there are actual |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
162 // (i.e. dynamic) yields because of requests, which are few and far between. |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
163 // |
0 | 164 // Note that, while "_pending_yields >= _pending_decrements" is an invariant, |
165 // we cannot easily test that invariant, since the counters are manipulated via | |
166 // atomic instructions without explicit locking and we cannot read | |
167 // the two counters atomically together: one suggestion is to | |
168 // use (for example) 16-bit counters so as to be able to read the | |
169 // two counters atomically even on 32-bit platforms. Notice that | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
170 // the second assert in acknowledge_yield_request() below does indeed |
0 | 171 // check a form of the above invariant, albeit indirectly. |
172 | |
173 static void increment_pending_yields() { | |
174 Atomic::inc(&_pending_yields); | |
175 assert(_pending_yields >= 0, "can't be negative"); | |
176 } | |
177 static void decrement_pending_yields() { | |
178 Atomic::dec(&_pending_yields); | |
179 assert(_pending_yields >= 0, "can't be negative"); | |
180 } | |
181 static void asynchronous_yield_request() { | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
182 assert(CMSIncrementalMode, "Currently only used w/iCMS"); |
0 | 183 increment_pending_yields(); |
184 Atomic::inc(&_pending_decrements); | |
185 assert(_pending_decrements >= 0, "can't be negative"); | |
186 } | |
187 static void acknowledge_yield_request() { | |
188 jint decrement = _pending_decrements; | |
189 if (decrement > 0) { | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
190 assert(CMSIncrementalMode, "Currently only used w/iCMS"); |
0 | 191 // Order important to preserve: _pending_yields >= _pending_decrements |
192 Atomic::add(-decrement, &_pending_decrements); | |
193 Atomic::add(-decrement, &_pending_yields); | |
194 assert(_pending_decrements >= 0, "can't be negative"); | |
195 assert(_pending_yields >= 0, "can't be negative"); | |
196 } | |
197 } | |
198 static bool should_yield() { return _pending_yields > 0; } | |
199 | |
200 // CMS incremental mode. | |
201 static void start_icms(); // notify thread to start a quantum of work | |
202 static void stop_icms(); // request thread to stop working | |
203 void icms_wait(); // if asked to stop, wait until notified to start | |
204 | |
205 // Incremental mode is enabled globally by the flag CMSIncrementalMode. It | |
206 // must also be enabled/disabled dynamically to allow foreground collections. | |
2365
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
207 #define ICMS_ENABLING_ASSERT \ |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
208 assert((CMSIncrementalMode && _icms_disabled >= 0) || \ |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
209 (!CMSIncrementalMode && _icms_disabled <= 0), "Error") |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
210 |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
211 static inline void enable_icms() { |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
212 ICMS_ENABLING_ASSERT; |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
213 Atomic::dec(&_icms_disabled); |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
214 } |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
215 static inline void disable_icms() { |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
216 ICMS_ENABLING_ASSERT; |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
217 Atomic::inc(&_icms_disabled); |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
218 } |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
219 static inline bool icms_is_disabled() { |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
220 ICMS_ENABLING_ASSERT; |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
221 return _icms_disabled > 0; |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
222 } |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
223 static inline bool icms_is_enabled() { |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
224 return !icms_is_disabled(); |
a181f3a124dd
6987703: iCMS: Intermittent hang with gc/gctests/CallGC/CallGC01 and +ExplicitGCInvokesConcurrent
ysr
parents:
1972
diff
changeset
|
225 } |
0 | 226 }; |
227 | |
228 inline void ConcurrentMarkSweepThread::trace_state(const char* desc) { | |
229 if (CMSTraceThreadState) { | |
230 char buf[128]; | |
231 TimeStamp& ts = gclog_or_tty->time_stamp(); | |
232 if (!ts.is_updated()) { | |
233 ts.update(); | |
234 } | |
235 jio_snprintf(buf, sizeof(buf), " [%.3f: CMSThread %s] ", | |
236 ts.seconds(), desc); | |
237 buf[sizeof(buf) - 1] = '\0'; | |
238 gclog_or_tty->print(buf); | |
239 } | |
240 } | |
241 | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1552
diff
changeset
|
242 // For scoped increment/decrement of (synchronous) yield requests |
0 | 243 class CMSSynchronousYieldRequest: public StackObj { |
244 public: | |
245 CMSSynchronousYieldRequest() { | |
246 ConcurrentMarkSweepThread::increment_pending_yields(); | |
247 } | |
248 ~CMSSynchronousYieldRequest() { | |
249 ConcurrentMarkSweepThread::decrement_pending_yields(); | |
250 } | |
251 }; | |
252 | |
253 // Used to emit a warning in case of unexpectedly excessive | |
254 // looping (in "apparently endless loops") in CMS code. | |
255 class CMSLoopCountWarn: public StackObj { | |
256 private: | |
257 const char* _src; | |
258 const char* _msg; | |
259 const intx _threshold; | |
260 intx _ticks; | |
261 | |
262 public: | |
263 inline CMSLoopCountWarn(const char* src, const char* msg, | |
264 const intx threshold) : | |
265 _src(src), _msg(msg), _threshold(threshold), _ticks(0) { } | |
266 | |
267 inline void tick() { | |
268 _ticks++; | |
269 if (CMSLoopWarn && _ticks % _threshold == 0) { | |
270 warning("%s has looped %d times %s", _src, _ticks, _msg); | |
271 } | |
272 } | |
273 }; | |
1972 | 274 |
275 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPTHREAD_HPP |