Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp @ 1562:dfe27f03244a
Merge
author | trims |
---|---|
date | Tue, 01 Jun 2010 11:48:33 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 |
2 /* | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
3 * Copyright (c) 2002, 2007, 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 | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * 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
|
22 * questions. |
0 | 23 * |
24 */ | |
25 | |
26 #include "incls/_precompiled.incl" | |
27 #include "incls/_gcTaskThread.cpp.incl" | |
28 | |
29 GCTaskThread::GCTaskThread(GCTaskManager* manager, | |
30 uint which, | |
31 uint processor_id) : | |
32 _manager(manager), | |
33 _processor_id(processor_id), | |
34 _time_stamps(NULL), | |
35 _time_stamp_index(0) | |
36 { | |
37 if (!os::create_thread(this, os::pgc_thread)) | |
38 vm_exit_out_of_memory(0, "Cannot create GC thread. Out of system resources."); | |
39 | |
40 if (PrintGCTaskTimeStamps) { | |
41 _time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries ); | |
42 | |
43 guarantee(_time_stamps != NULL, "Sanity"); | |
44 } | |
45 set_id(which); | |
46 set_name("GC task thread#%d (ParallelGC)", which); | |
47 } | |
48 | |
49 GCTaskThread::~GCTaskThread() { | |
50 if (_time_stamps != NULL) { | |
51 FREE_C_HEAP_ARRAY(GCTaskTimeStamp, _time_stamps); | |
52 } | |
53 } | |
54 | |
55 void GCTaskThread::start() { | |
56 os::start_thread(this); | |
57 } | |
58 | |
59 GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) { | |
60 guarantee(index < GCTaskTimeStampEntries, "increase GCTaskTimeStampEntries"); | |
61 | |
62 return &(_time_stamps[index]); | |
63 } | |
64 | |
65 void GCTaskThread::print_task_time_stamps() { | |
66 assert(PrintGCTaskTimeStamps, "Sanity"); | |
67 assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)"); | |
68 | |
69 tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index); | |
70 for(uint i=0; i<_time_stamp_index; i++) { | |
71 GCTaskTimeStamp* time_stamp = time_stamp_at(i); | |
72 tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]", | |
73 time_stamp->name(), | |
74 time_stamp->entry_time(), | |
75 time_stamp->exit_time()); | |
76 } | |
77 | |
78 // Reset after dumping the data | |
79 _time_stamp_index = 0; | |
80 } | |
81 | |
82 void GCTaskThread::print_on(outputStream* st) const { | |
83 st->print("\"%s\" ", name()); | |
84 Thread::print_on(st); | |
85 st->cr(); | |
86 } | |
87 | |
88 void GCTaskThread::run() { | |
89 // Set up the thread for stack overflow support | |
90 this->record_stack_base_and_size(); | |
91 this->initialize_thread_local_storage(); | |
92 // Bind yourself to your processor. | |
93 if (processor_id() != GCTaskManager::sentinel_worker()) { | |
94 if (TraceGCTaskThread) { | |
95 tty->print_cr("GCTaskThread::run: " | |
96 " binding to processor %u", processor_id()); | |
97 } | |
98 if (!os::bind_to_processor(processor_id())) { | |
99 DEBUG_ONLY( | |
100 warning("Couldn't bind GCTaskThread %u to processor %u", | |
101 which(), processor_id()); | |
102 ) | |
103 } | |
104 } | |
105 // Part of thread setup. | |
106 // ??? Are these set up once here to make subsequent ones fast? | |
107 HandleMark hm_outer; | |
108 ResourceMark rm_outer; | |
109 | |
110 TimeStamp timer; | |
111 | |
112 for (;/* ever */;) { | |
113 // These are so we can flush the resources allocated in the inner loop. | |
114 HandleMark hm_inner; | |
115 ResourceMark rm_inner; | |
116 for (; /* break */; ) { | |
117 // This will block until there is a task to be gotten. | |
118 GCTask* task = manager()->get_task(which()); | |
119 | |
120 // In case the update is costly | |
121 if (PrintGCTaskTimeStamps) { | |
122 timer.update(); | |
123 } | |
124 | |
125 jlong entry_time = timer.ticks(); | |
126 char* name = task->name(); | |
127 | |
128 task->do_it(manager(), which()); | |
129 manager()->note_completion(which()); | |
130 | |
131 if (PrintGCTaskTimeStamps) { | |
132 assert(_time_stamps != NULL, "Sanity (PrintGCTaskTimeStamps set late?)"); | |
133 | |
134 timer.update(); | |
135 | |
136 GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++); | |
137 | |
138 time_stamp->set_name(name); | |
139 time_stamp->set_entry_time(entry_time); | |
140 time_stamp->set_exit_time(timer.ticks()); | |
141 } | |
142 | |
143 // Check if we should release our inner resources. | |
144 if (manager()->should_release_resources(which())) { | |
145 manager()->note_release(which()); | |
146 break; | |
147 } | |
148 } | |
149 } | |
150 } |