Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/g1StringDedupThread.cpp @ 20211:82693fb204a5
8038930: G1CodeRootSet::test fails with assert(_num_chunks_handed_out == 0) failed: No elements must have been handed out yet
Summary: The test incorrectly assumed that it had been started with no other previous compilation activity. Fix this by allowing multiple code root free chunk lists, and use one separate from the global one to perform the test.
Reviewed-by: brutisso
author | tschatzl |
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date | Wed, 16 Apr 2014 10:14:50 +0200 |
parents | 581e70386ec9 |
children | 04a62a3d51d7 |
rev | line source |
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17764 | 1 /* |
2 * Copyright (c) 2014, 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 #include "precompiled.hpp" | |
26 #include "gc_implementation/g1/g1Log.hpp" | |
27 #include "gc_implementation/g1/g1StringDedup.hpp" | |
28 #include "gc_implementation/g1/g1StringDedupTable.hpp" | |
29 #include "gc_implementation/g1/g1StringDedupThread.hpp" | |
30 #include "gc_implementation/g1/g1StringDedupQueue.hpp" | |
31 | |
32 G1StringDedupThread* G1StringDedupThread::_thread = NULL; | |
33 | |
34 G1StringDedupThread::G1StringDedupThread() : | |
35 ConcurrentGCThread() { | |
36 set_name("String Deduplication Thread"); | |
37 create_and_start(); | |
38 } | |
39 | |
40 G1StringDedupThread::~G1StringDedupThread() { | |
41 ShouldNotReachHere(); | |
42 } | |
43 | |
44 void G1StringDedupThread::create() { | |
45 assert(G1StringDedup::is_enabled(), "String deduplication not enabled"); | |
46 assert(_thread == NULL, "One string deduplication thread allowed"); | |
47 _thread = new G1StringDedupThread(); | |
48 } | |
49 | |
50 G1StringDedupThread* G1StringDedupThread::thread() { | |
51 assert(G1StringDedup::is_enabled(), "String deduplication not enabled"); | |
52 assert(_thread != NULL, "String deduplication thread not created"); | |
53 return _thread; | |
54 } | |
55 | |
56 void G1StringDedupThread::print_on(outputStream* st) const { | |
57 st->print("\"%s\" ", name()); | |
58 Thread::print_on(st); | |
59 st->cr(); | |
60 } | |
61 | |
62 void G1StringDedupThread::run() { | |
63 G1StringDedupStat total_stat; | |
64 | |
65 initialize_in_thread(); | |
66 wait_for_universe_init(); | |
67 | |
68 // Main loop | |
69 for (;;) { | |
70 G1StringDedupStat stat; | |
71 | |
72 stat.mark_idle(); | |
73 | |
74 // Wait for the queue to become non-empty | |
75 G1StringDedupQueue::wait(); | |
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76 if (_should_terminate) { |
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77 break; |
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78 } |
17764 | 79 |
20192 | 80 { |
81 // Include thread in safepoints | |
82 SuspendibleThreadSetJoiner sts; | |
17764 | 83 |
20192 | 84 stat.mark_exec(); |
17764 | 85 |
20192 | 86 // Process the queue |
87 for (;;) { | |
88 oop java_string = G1StringDedupQueue::pop(); | |
89 if (java_string == NULL) { | |
90 break; | |
91 } | |
92 | |
93 G1StringDedupTable::deduplicate(java_string, stat); | |
94 | |
95 // Safepoint this thread if needed | |
96 if (sts.should_yield()) { | |
97 stat.mark_block(); | |
98 sts.yield(); | |
99 stat.mark_unblock(); | |
100 } | |
17764 | 101 } |
102 | |
20192 | 103 G1StringDedupTable::trim_entry_cache(); |
17764 | 104 |
20192 | 105 stat.mark_done(); |
17764 | 106 |
20192 | 107 // Print statistics |
108 total_stat.add(stat); | |
109 print(gclog_or_tty, stat, total_stat); | |
110 } | |
17764 | 111 } |
112 | |
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113 terminate(); |
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114 } |
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115 |
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116 void G1StringDedupThread::stop() { |
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117 { |
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118 MonitorLockerEx ml(Terminator_lock); |
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119 _thread->_should_terminate = true; |
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120 } |
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121 |
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122 G1StringDedupQueue::cancel_wait(); |
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123 |
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124 { |
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125 MonitorLockerEx ml(Terminator_lock); |
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126 while (!_thread->_has_terminated) { |
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127 ml.wait(); |
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128 } |
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129 } |
17764 | 130 } |
131 | |
132 void G1StringDedupThread::print(outputStream* st, const G1StringDedupStat& last_stat, const G1StringDedupStat& total_stat) { | |
133 if (G1Log::fine() || PrintStringDeduplicationStatistics) { | |
134 G1StringDedupStat::print_summary(st, last_stat, total_stat); | |
135 if (PrintStringDeduplicationStatistics) { | |
136 G1StringDedupStat::print_statistics(st, last_stat, false); | |
137 G1StringDedupStat::print_statistics(st, total_stat, true); | |
138 G1StringDedupTable::print_statistics(st); | |
139 G1StringDedupQueue::print_statistics(st); | |
140 } | |
141 } | |
142 } |