Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp @ 17937:78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti
| author | drchase |
|---|---|
| date | Thu, 22 May 2014 15:52:41 -0400 |
| parents | 55fb97c4c58d |
| children | 52b4284cb496 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* | |
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3 * Copyright (c) 2002, 2014, 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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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 |
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37 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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38 |
| 0 | 39 GCTaskThread::GCTaskThread(GCTaskManager* manager, |
| 40 uint which, | |
| 41 uint processor_id) : | |
| 42 _manager(manager), | |
| 43 _processor_id(processor_id), | |
| 44 _time_stamps(NULL), | |
| 45 _time_stamp_index(0) | |
| 46 { | |
| 47 if (!os::create_thread(this, os::pgc_thread)) | |
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48 vm_exit_out_of_memory(0, OOM_MALLOC_ERROR, "Cannot create GC thread. Out of system resources."); |
| 0 | 49 |
| 50 if (PrintGCTaskTimeStamps) { | |
| 6197 | 51 _time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries, mtGC); |
| 0 | 52 |
| 53 guarantee(_time_stamps != NULL, "Sanity"); | |
| 54 } | |
| 55 set_id(which); | |
| 56 set_name("GC task thread#%d (ParallelGC)", which); | |
| 57 } | |
| 58 | |
| 59 GCTaskThread::~GCTaskThread() { | |
| 60 if (_time_stamps != NULL) { | |
| 6197 | 61 FREE_C_HEAP_ARRAY(GCTaskTimeStamp, _time_stamps, mtGC); |
| 0 | 62 } |
| 63 } | |
| 64 | |
| 65 void GCTaskThread::start() { | |
| 66 os::start_thread(this); | |
| 67 } | |
| 68 | |
| 69 GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) { | |
| 70 guarantee(index < GCTaskTimeStampEntries, "increase GCTaskTimeStampEntries"); | |
| 71 | |
| 72 return &(_time_stamps[index]); | |
| 73 } | |
| 74 | |
| 75 void GCTaskThread::print_task_time_stamps() { | |
| 76 assert(PrintGCTaskTimeStamps, "Sanity"); | |
| 77 assert(_time_stamps != NULL, "Sanity (Probably set PrintGCTaskTimeStamps late)"); | |
| 78 | |
| 79 tty->print_cr("GC-Thread %u entries: %d", id(), _time_stamp_index); | |
| 80 for(uint i=0; i<_time_stamp_index; i++) { | |
| 81 GCTaskTimeStamp* time_stamp = time_stamp_at(i); | |
| 82 tty->print_cr("\t[ %s " INT64_FORMAT " " INT64_FORMAT " ]", | |
| 83 time_stamp->name(), | |
| 84 time_stamp->entry_time(), | |
| 85 time_stamp->exit_time()); | |
| 86 } | |
| 87 | |
| 88 // Reset after dumping the data | |
| 89 _time_stamp_index = 0; | |
| 90 } | |
| 91 | |
| 92 void GCTaskThread::print_on(outputStream* st) const { | |
| 93 st->print("\"%s\" ", name()); | |
| 94 Thread::print_on(st); | |
| 95 st->cr(); | |
| 96 } | |
| 97 | |
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98 // GC workers get tasks from the GCTaskManager and execute |
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99 // them in this method. If there are no tasks to execute, |
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100 // the GC workers wait in the GCTaskManager's get_task() |
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101 // for tasks to be enqueued for execution. |
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102 |
| 0 | 103 void GCTaskThread::run() { |
| 104 // Set up the thread for stack overflow support | |
| 105 this->record_stack_base_and_size(); | |
| 106 this->initialize_thread_local_storage(); | |
| 107 // Bind yourself to your processor. | |
| 108 if (processor_id() != GCTaskManager::sentinel_worker()) { | |
| 109 if (TraceGCTaskThread) { | |
| 110 tty->print_cr("GCTaskThread::run: " | |
| 111 " binding to processor %u", processor_id()); | |
| 112 } | |
| 113 if (!os::bind_to_processor(processor_id())) { | |
| 114 DEBUG_ONLY( | |
| 115 warning("Couldn't bind GCTaskThread %u to processor %u", | |
| 116 which(), processor_id()); | |
| 117 ) | |
| 118 } | |
| 119 } | |
| 120 // Part of thread setup. | |
| 121 // ??? Are these set up once here to make subsequent ones fast? | |
| 122 HandleMark hm_outer; | |
| 123 ResourceMark rm_outer; | |
| 124 | |
| 125 TimeStamp timer; | |
| 126 | |
| 127 for (;/* ever */;) { | |
| 128 // These are so we can flush the resources allocated in the inner loop. | |
| 129 HandleMark hm_inner; | |
| 130 ResourceMark rm_inner; | |
| 131 for (; /* break */; ) { | |
| 132 // This will block until there is a task to be gotten. | |
| 133 GCTask* task = manager()->get_task(which()); | |
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134 // Record if this is an idle task for later use. |
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135 bool is_idle_task = task->is_idle_task(); |
| 0 | 136 // In case the update is costly |
| 137 if (PrintGCTaskTimeStamps) { | |
| 138 timer.update(); | |
| 139 } | |
| 140 | |
| 141 jlong entry_time = timer.ticks(); | |
| 142 char* name = task->name(); | |
| 143 | |
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144 // If this is the barrier task, it can be destroyed |
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145 // by the GC task manager once the do_it() executes. |
| 0 | 146 task->do_it(manager(), which()); |
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147 |
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148 // Use the saved value of is_idle_task because references |
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149 // using "task" are not reliable for the barrier task. |
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150 if (!is_idle_task) { |
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151 manager()->note_completion(which()); |
| 0 | 152 |
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153 if (PrintGCTaskTimeStamps) { |
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154 assert(_time_stamps != NULL, |
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155 "Sanity (PrintGCTaskTimeStamps set late?)"); |
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156 |
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157 timer.update(); |
| 0 | 158 |
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159 GCTaskTimeStamp* time_stamp = time_stamp_at(_time_stamp_index++); |
| 0 | 160 |
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161 time_stamp->set_name(name); |
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162 time_stamp->set_entry_time(entry_time); |
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163 time_stamp->set_exit_time(timer.ticks()); |
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164 } |
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165 } else { |
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166 // idle tasks complete outside the normal accounting |
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167 // so that a task can complete without waiting for idle tasks. |
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168 // They have to be terminated separately. |
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169 IdleGCTask::destroy((IdleGCTask*)task); |
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170 set_is_working(true); |
| 0 | 171 } |
| 172 | |
| 173 // Check if we should release our inner resources. | |
| 174 if (manager()->should_release_resources(which())) { | |
| 175 manager()->note_release(which()); | |
| 176 break; | |
| 177 } | |
| 178 } | |
| 179 } | |
| 180 } |