Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/shared/collectorCounters.hpp @ 1840:4e0094bc41fa
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
Summary: Clear the concurrent marking "in progress" flag while the FullGCCount_lock is held. This avoids a race that can cause back to back System.gc() calls, when ExplicitGCInvokesConcurrent is enabled, to fail to initiate a marking cycle causing the requesting thread to hang.
Reviewed-by: tonyp, ysr
author | johnc |
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date | Fri, 01 Oct 2010 18:23:16 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // CollectorCounters is a holder class for performance counters | |
26 // that track a collector | |
27 | |
28 class CollectorCounters: public CHeapObj { | |
29 friend class VMStructs; | |
30 | |
31 private: | |
32 PerfCounter* _invocations; | |
33 PerfCounter* _time; | |
34 PerfVariable* _last_entry_time; | |
35 PerfVariable* _last_exit_time; | |
36 | |
37 // Constant PerfData types don't need to retain a reference. | |
38 // However, it's a good idea to document them here. | |
39 // PerfStringConstant* _name; | |
40 | |
41 char* _name_space; | |
42 | |
43 public: | |
44 | |
45 CollectorCounters(const char* name, int ordinal); | |
46 | |
47 ~CollectorCounters() { | |
48 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space); | |
49 } | |
50 | |
51 inline PerfCounter* invocation_counter() const { return _invocations; } | |
52 | |
53 inline PerfCounter* time_counter() const { return _time; } | |
54 | |
55 inline PerfVariable* last_entry_counter() const { return _last_entry_time; } | |
56 | |
57 inline PerfVariable* last_exit_counter() const { return _last_exit_time; } | |
58 | |
59 const char* name_space() const { return _name_space; } | |
60 }; | |
61 | |
62 class TraceCollectorStats: public PerfTraceTimedEvent { | |
63 | |
64 protected: | |
65 CollectorCounters* _c; | |
66 | |
67 public: | |
68 inline TraceCollectorStats(CollectorCounters* c) : | |
69 PerfTraceTimedEvent(c->time_counter(), c->invocation_counter()), | |
70 _c(c) { | |
71 | |
72 if (UsePerfData) { | |
73 _c->last_entry_counter()->set_value(os::elapsed_counter()); | |
74 } | |
75 } | |
76 | |
77 inline ~TraceCollectorStats() { | |
78 if (UsePerfData) _c->last_exit_counter()->set_value(os::elapsed_counter()); | |
79 } | |
80 }; |