author | stefank |
Wed, 06 Aug 2014 09:55:16 +0200 | |
changeset 25908 | 8adb2fb6fc3c |
parent 24104 | febf9363fb68 |
child 26160 | aba6b01cb988 |
permissions | -rw-r--r-- |
1374 | 1 |
/* |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
2 |
* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
1374 | 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 |
* |
|
5547
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5033
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5033
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
f4b087cbb361
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
5033
diff
changeset
|
21 |
* questions. |
1374 | 22 |
* |
23 |
*/ |
|
24 |
||
7397 | 25 |
#include "precompiled.hpp" |
26 |
#include "gc_implementation/g1/concurrentG1Refine.hpp" |
|
27 |
#include "gc_implementation/g1/concurrentG1RefineThread.hpp" |
|
28 |
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
|
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
29 |
#include "gc_implementation/g1/g1HotCardCache.hpp" |
22220
eb467dfb9585
8029326: G1 does not check if threads gets created
ehelin
parents:
17854
diff
changeset
|
30 |
#include "runtime/java.hpp" |
8926
717a49db1743
7026932: G1: No need to abort VM when card count cache expansion fails
johnc
parents:
8683
diff
changeset
|
31 |
|
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
23855
diff
changeset
|
32 |
ConcurrentG1Refine::ConcurrentG1Refine(G1CollectedHeap* g1h, CardTableEntryClosure* refine_closure) : |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
33 |
_threads(NULL), _n_threads(0), |
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
34 |
_hot_card_cache(g1h) |
1374 | 35 |
{ |
22551 | 36 |
// Ergonomically select initial concurrent refinement parameters |
5033 | 37 |
if (FLAG_IS_DEFAULT(G1ConcRefinementGreenZone)) { |
38 |
FLAG_SET_DEFAULT(G1ConcRefinementGreenZone, MAX2<int>(ParallelGCThreads, 1)); |
|
4481 | 39 |
} |
5033 | 40 |
set_green_zone(G1ConcRefinementGreenZone); |
4481 | 41 |
|
5033 | 42 |
if (FLAG_IS_DEFAULT(G1ConcRefinementYellowZone)) { |
43 |
FLAG_SET_DEFAULT(G1ConcRefinementYellowZone, green_zone() * 3); |
|
4481 | 44 |
} |
5033 | 45 |
set_yellow_zone(MAX2<int>(G1ConcRefinementYellowZone, green_zone())); |
4481 | 46 |
|
5033 | 47 |
if (FLAG_IS_DEFAULT(G1ConcRefinementRedZone)) { |
48 |
FLAG_SET_DEFAULT(G1ConcRefinementRedZone, yellow_zone() * 2); |
|
4481 | 49 |
} |
5033 | 50 |
set_red_zone(MAX2<int>(G1ConcRefinementRedZone, yellow_zone())); |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
51 |
|
4481 | 52 |
_n_worker_threads = thread_num(); |
53 |
// We need one extra thread to do the young gen rset size sampling. |
|
54 |
_n_threads = _n_worker_threads + 1; |
|
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
55 |
|
4481 | 56 |
reset_threshold_step(); |
57 |
||
13195 | 58 |
_threads = NEW_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _n_threads, mtGC); |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
59 |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
60 |
uint worker_id_offset = DirtyCardQueueSet::num_par_ids(); |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
61 |
|
4481 | 62 |
ConcurrentG1RefineThread *next = NULL; |
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
63 |
for (uint i = _n_threads - 1; i != UINT_MAX; i--) { |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
23855
diff
changeset
|
64 |
ConcurrentG1RefineThread* t = new ConcurrentG1RefineThread(this, next, refine_closure, worker_id_offset, i); |
4481 | 65 |
assert(t != NULL, "Conc refine should have been created"); |
22220
eb467dfb9585
8029326: G1 does not check if threads gets created
ehelin
parents:
17854
diff
changeset
|
66 |
if (t->osthread() == NULL) { |
eb467dfb9585
8029326: G1 does not check if threads gets created
ehelin
parents:
17854
diff
changeset
|
67 |
vm_shutdown_during_initialization("Could not create ConcurrentG1RefineThread"); |
eb467dfb9585
8029326: G1 does not check if threads gets created
ehelin
parents:
17854
diff
changeset
|
68 |
} |
eb467dfb9585
8029326: G1 does not check if threads gets created
ehelin
parents:
17854
diff
changeset
|
69 |
|
4481 | 70 |
assert(t->cg1r() == this, "Conc refine thread should refer to this"); |
71 |
_threads[i] = t; |
|
72 |
next = t; |
|
1374 | 73 |
} |
74 |
} |
|
75 |
||
4481 | 76 |
void ConcurrentG1Refine::reset_threshold_step() { |
5033 | 77 |
if (FLAG_IS_DEFAULT(G1ConcRefinementThresholdStep)) { |
4481 | 78 |
_thread_threshold_step = (yellow_zone() - green_zone()) / (worker_thread_num() + 1); |
79 |
} else { |
|
5033 | 80 |
_thread_threshold_step = G1ConcRefinementThresholdStep; |
2882
d508a8bac491
6841831: G1: assert(contains_reference(from),"We just added it!") fires
iveresov
parents:
2881
diff
changeset
|
81 |
} |
4481 | 82 |
} |
83 |
||
1374 | 84 |
void ConcurrentG1Refine::init() { |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
85 |
_hot_card_cache.initialize(); |
1374 | 86 |
} |
87 |
||
2881 | 88 |
void ConcurrentG1Refine::stop() { |
89 |
if (_threads != NULL) { |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
90 |
for (uint i = 0; i < _n_threads; i++) { |
2881 | 91 |
_threads[i]->stop(); |
92 |
} |
|
93 |
} |
|
94 |
} |
|
95 |
||
4481 | 96 |
void ConcurrentG1Refine::reinitialize_threads() { |
97 |
reset_threshold_step(); |
|
98 |
if (_threads != NULL) { |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
99 |
for (uint i = 0; i < _n_threads; i++) { |
4481 | 100 |
_threads[i]->initialize(); |
101 |
} |
|
102 |
} |
|
103 |
} |
|
104 |
||
1374 | 105 |
ConcurrentG1Refine::~ConcurrentG1Refine() { |
2881 | 106 |
if (_threads != NULL) { |
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
107 |
for (uint i = 0; i < _n_threads; i++) { |
2881 | 108 |
delete _threads[i]; |
109 |
} |
|
13195 | 110 |
FREE_C_HEAP_ARRAY(ConcurrentG1RefineThread*, _threads, mtGC); |
1374 | 111 |
} |
112 |
} |
|
113 |
||
2881 | 114 |
void ConcurrentG1Refine::threads_do(ThreadClosure *tc) { |
115 |
if (_threads != NULL) { |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
116 |
for (uint i = 0; i < _n_threads; i++) { |
2881 | 117 |
tc->do_thread(_threads[i]); |
118 |
} |
|
1374 | 119 |
} |
120 |
} |
|
121 |
||
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
122 |
void ConcurrentG1Refine::worker_threads_do(ThreadClosure * tc) { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
123 |
if (_threads != NULL) { |
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
124 |
for (uint i = 0; i < worker_thread_num(); i++) { |
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
125 |
tc->do_thread(_threads[i]); |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
126 |
} |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
127 |
} |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
128 |
} |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
129 |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
130 |
uint ConcurrentG1Refine::thread_num() { |
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
131 |
uint n_threads = (G1ConcRefinementThreads > 0) ? G1ConcRefinementThreads |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
13289
diff
changeset
|
132 |
: ParallelGCThreads; |
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
133 |
return MAX2<uint>(n_threads, 1); |
1374 | 134 |
} |
4022 | 135 |
|
136 |
void ConcurrentG1Refine::print_worker_threads_on(outputStream* st) const { |
|
23855
c4574075402c
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
22551
diff
changeset
|
137 |
for (uint i = 0; i < _n_threads; ++i) { |
4022 | 138 |
_threads[i]->print_on(st); |
139 |
st->cr(); |
|
140 |
} |
|
141 |
} |
|
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
142 |
|
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
143 |
ConcurrentG1RefineThread * ConcurrentG1Refine::sampling_thread() const { |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
144 |
return _threads[worker_thread_num()]; |
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17327
diff
changeset
|
145 |
} |