Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp @ 4114:6729bbc1fcd6
7003454: order constants in constant table by number of references in code
Reviewed-by: kvn, never, bdelsart
author | twisti |
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date | Wed, 16 Nov 2011 01:39:50 -0800 |
parents | f95d63e2154a |
children | bca17e38de00 |
rev | line source |
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0 | 1 |
2 /* | |
1972 | 3 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
0 | 23 * |
24 */ | |
25 | |
1972 | 26 #include "precompiled.hpp" |
27 #include "gc_implementation/parallelScavenge/gcTaskManager.hpp" | |
28 #include "gc_implementation/parallelScavenge/gcTaskThread.hpp" | |
29 #include "memory/allocation.hpp" | |
30 #include "memory/allocation.inline.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "runtime/handles.hpp" | |
33 #include "runtime/handles.inline.hpp" | |
34 #include "runtime/os.hpp" | |
35 #include "runtime/thread.hpp" | |
0 | 36 |
37 GCTaskThread::GCTaskThread(GCTaskManager* manager, | |
38 uint which, | |
39 uint processor_id) : | |
40 _manager(manager), | |
41 _processor_id(processor_id), | |
42 _time_stamps(NULL), | |
43 _time_stamp_index(0) | |
44 { | |
45 if (!os::create_thread(this, os::pgc_thread)) | |
46 vm_exit_out_of_memory(0, "Cannot create GC thread. Out of system resources."); | |
47 | |
48 if (PrintGCTaskTimeStamps) { | |
49 _time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries ); | |
50 | |
51 guarantee(_time_stamps != NULL, "Sanity"); | |
52 } | |
53 set_id(which); | |
54 set_name("GC task thread#%d (ParallelGC)", which); | |
55 } | |
56 | |
57 GCTaskThread::~GCTaskThread() { | |
58 if (_time_stamps != NULL) { | |
59 FREE_C_HEAP_ARRAY(GCTaskTimeStamp, _time_stamps); | |
60 } | |
61 } | |
62 | |
63 void GCTaskThread::start() { | |
64 os::start_thread(this); | |
65 } | |
66 | |
67 GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) { | |
68 guarantee(index < GCTaskTimeStampEntries, "increase GCTaskTimeStampEntries"); | |
69 | |
70 return &(_time_stamps[index]); | |
71 } | |
72 | |
73 void GCTaskThread::print_task_time_stamps() { | |
74 assert(PrintGCTaskTimeStamps, "Sanity"); | |
75 assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)"); | |
76 | |
77 tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index); | |
78 for(uint i=0; i<_time_stamp_index; i++) { | |
79 GCTaskTimeStamp* time_stamp = time_stamp_at(i); | |
80 tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]", | |
81 time_stamp->name(), | |
82 time_stamp->entry_time(), | |
83 time_stamp->exit_time()); | |
84 } | |
85 | |
86 // Reset after dumping the data | |
87 _time_stamp_index = 0; | |
88 } | |
89 | |
90 void GCTaskThread::print_on(outputStream* st) const { | |
91 st->print("\"%s\" ", name()); | |
92 Thread::print_on(st); | |
93 st->cr(); | |
94 } | |
95 | |
96 void GCTaskThread::run() { | |
97 // Set up the thread for stack overflow support | |
98 this->record_stack_base_and_size(); | |
99 this->initialize_thread_local_storage(); | |
100 // Bind yourself to your processor. | |
101 if (processor_id() != GCTaskManager::sentinel_worker()) { | |
102 if (TraceGCTaskThread) { | |
103 tty->print_cr("GCTaskThread::run: " | |
104 " binding to processor %u", processor_id()); | |
105 } | |
106 if (!os::bind_to_processor(processor_id())) { | |
107 DEBUG_ONLY( | |
108 warning("Couldn't bind GCTaskThread %u to processor %u", | |
109 which(), processor_id()); | |
110 ) | |
111 } | |
112 } | |
113 // Part of thread setup. | |
114 // ??? Are these set up once here to make subsequent ones fast? | |
115 HandleMark hm_outer; | |
116 ResourceMark rm_outer; | |
117 | |
118 TimeStamp timer; | |
119 | |
120 for (;/* ever */;) { | |
121 // These are so we can flush the resources allocated in the inner loop. | |
122 HandleMark hm_inner; | |
123 ResourceMark rm_inner; | |
124 for (; /* break */; ) { | |
125 // This will block until there is a task to be gotten. | |
126 GCTask* task = manager()->get_task(which()); | |
127 | |
128 // In case the update is costly | |
129 if (PrintGCTaskTimeStamps) { | |
130 timer.update(); | |
131 } | |
132 | |
133 jlong entry_time = timer.ticks(); | |
134 char* name = task->name(); | |
135 | |
136 task->do_it(manager(), which()); | |
137 manager()->note_completion(which()); | |
138 | |
139 if (PrintGCTaskTimeStamps) { | |
140 assert(_time_stamps != NULL, "Sanity (PrintGCTaskTimeStamps set late?)"); | |
141 | |
142 timer.update(); | |
143 | |
144 GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++); | |
145 | |
146 time_stamp->set_name(name); | |
147 time_stamp->set_entry_time(entry_time); | |
148 time_stamp->set_exit_time(timer.ticks()); | |
149 } | |
150 | |
151 // Check if we should release our inner resources. | |
152 if (manager()->should_release_resources(which())) { | |
153 manager()->note_release(which()); | |
154 break; | |
155 } | |
156 } | |
157 } | |
158 } |