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annotate src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* | |
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6941466: Oracle rebranding changes for Hotspot repositories
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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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * or visit www.oracle.com if you need additional information or have any |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 } |