Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/interfaceSupport.cpp @ 20190:0982ec23da03
8043607: Add a GC id as a log decoration similar to PrintGCTimeStamps
Reviewed-by: jwilhelm, ehelin, tschatzl
author | brutisso |
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date | Thu, 19 Jun 2014 13:31:14 +0200 |
parents | 78bbf4d43a14 |
children | ce8f6bb717c9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "gc_implementation/shared/markSweep.hpp" | |
27 #include "gc_interface/collectedHeap.hpp" | |
28 #include "gc_interface/collectedHeap.inline.hpp" | |
29 #include "memory/genCollectedHeap.hpp" | |
30 #include "memory/resourceArea.hpp" | |
31 #include "runtime/init.hpp" | |
32 #include "runtime/interfaceSupport.hpp" | |
33 #include "runtime/threadLocalStorage.hpp" | |
34 #include "runtime/vframe.hpp" | |
35 #include "utilities/preserveException.hpp" | |
0 | 36 |
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37 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
0 | 38 |
39 // Implementation of InterfaceSupport | |
40 | |
41 #ifdef ASSERT | |
42 | |
43 long InterfaceSupport::_number_of_calls = 0; | |
44 long InterfaceSupport::_scavenge_alot_counter = 1; | |
45 long InterfaceSupport::_fullgc_alot_counter = 1; | |
46 long InterfaceSupport::_fullgc_alot_invocation = 0; | |
47 | |
48 Histogram* RuntimeHistogram; | |
49 | |
50 RuntimeHistogramElement::RuntimeHistogramElement(const char* elementName) { | |
51 static volatile jint RuntimeHistogram_lock = 0; | |
52 _name = elementName; | |
53 uintx count = 0; | |
54 | |
55 while (Atomic::cmpxchg(1, &RuntimeHistogram_lock, 0) != 0) { | |
56 while (OrderAccess::load_acquire(&RuntimeHistogram_lock) != 0) { | |
57 count +=1; | |
58 if ( (WarnOnStalledSpinLock > 0) | |
59 && (count % WarnOnStalledSpinLock == 0)) { | |
60 warning("RuntimeHistogram_lock seems to be stalled"); | |
61 } | |
62 } | |
63 } | |
64 | |
65 if (RuntimeHistogram == NULL) { | |
66 RuntimeHistogram = new Histogram("VM Runtime Call Counts",200); | |
67 } | |
68 | |
69 RuntimeHistogram->add_element(this); | |
70 Atomic::dec(&RuntimeHistogram_lock); | |
71 } | |
72 | |
73 void InterfaceSupport::trace(const char* result_type, const char* header) { | |
74 tty->print_cr("%6d %s", _number_of_calls, header); | |
75 } | |
76 | |
77 void InterfaceSupport::gc_alot() { | |
78 Thread *thread = Thread::current(); | |
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79 if (!thread->is_Java_thread()) return; // Avoid concurrent calls |
0 | 80 // Check for new, not quite initialized thread. A thread in new mode cannot initiate a GC. |
81 JavaThread *current_thread = (JavaThread *)thread; | |
82 if (current_thread->active_handles() == NULL) return; | |
83 | |
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84 // Short-circuit any possible re-entrant gc-a-lot attempt |
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85 if (thread->skip_gcalot()) return; |
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86 |
0 | 87 if (is_init_completed()) { |
88 | |
89 if (++_fullgc_alot_invocation < FullGCALotStart) { | |
90 return; | |
91 } | |
92 | |
93 // Use this line if you want to block at a specific point, | |
94 // e.g. one number_of_calls/scavenge/gc before you got into problems | |
95 if (FullGCALot) _fullgc_alot_counter--; | |
96 | |
97 // Check if we should force a full gc | |
98 if (_fullgc_alot_counter == 0) { | |
99 // Release dummy so objects are forced to move | |
100 if (!Universe::release_fullgc_alot_dummy()) { | |
101 warning("FullGCALot: Unable to release more dummies at bottom of heap"); | |
102 } | |
103 HandleMark hm(thread); | |
104 Universe::heap()->collect(GCCause::_full_gc_alot); | |
105 unsigned int invocations = Universe::heap()->total_full_collections(); | |
106 // Compute new interval | |
107 if (FullGCALotInterval > 1) { | |
108 _fullgc_alot_counter = 1+(long)((double)FullGCALotInterval*os::random()/(max_jint+1.0)); | |
109 if (PrintGCDetails && Verbose) { | |
110 tty->print_cr("Full gc no: %u\tInterval: %d", invocations, | |
111 _fullgc_alot_counter); | |
112 } | |
113 } else { | |
114 _fullgc_alot_counter = 1; | |
115 } | |
116 // Print progress message | |
117 if (invocations % 100 == 0) { | |
118 if (PrintGCDetails && Verbose) tty->print_cr("Full gc no: %u", invocations); | |
119 } | |
120 } else { | |
121 if (ScavengeALot) _scavenge_alot_counter--; | |
122 // Check if we should force a scavenge | |
123 if (_scavenge_alot_counter == 0) { | |
124 HandleMark hm(thread); | |
125 Universe::heap()->collect(GCCause::_scavenge_alot); | |
126 unsigned int invocations = Universe::heap()->total_collections() - Universe::heap()->total_full_collections(); | |
127 // Compute new interval | |
128 if (ScavengeALotInterval > 1) { | |
129 _scavenge_alot_counter = 1+(long)((double)ScavengeALotInterval*os::random()/(max_jint+1.0)); | |
130 if (PrintGCDetails && Verbose) { | |
131 tty->print_cr("Scavenge no: %u\tInterval: %d", invocations, | |
132 _scavenge_alot_counter); | |
133 } | |
134 } else { | |
135 _scavenge_alot_counter = 1; | |
136 } | |
137 // Print progress message | |
138 if (invocations % 1000 == 0) { | |
139 if (PrintGCDetails && Verbose) tty->print_cr("Scavenge no: %u", invocations); | |
140 } | |
141 } | |
142 } | |
143 } | |
144 } | |
145 | |
146 | |
147 vframe* vframe_array[50]; | |
148 int walk_stack_counter = 0; | |
149 | |
150 void InterfaceSupport::walk_stack_from(vframe* start_vf) { | |
151 // walk | |
152 int i = 0; | |
153 for (vframe* f = start_vf; f; f = f->sender() ) { | |
154 if (i < 50) vframe_array[i++] = f; | |
155 } | |
156 } | |
157 | |
158 | |
159 void InterfaceSupport::walk_stack() { | |
160 JavaThread* thread = JavaThread::current(); | |
161 walk_stack_counter++; | |
162 if (!thread->has_last_Java_frame()) return; | |
163 ResourceMark rm(thread); | |
164 RegisterMap reg_map(thread); | |
165 walk_stack_from(thread->last_java_vframe(®_map)); | |
166 } | |
167 | |
168 | |
169 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
170 | |
171 static int zap_traversals = 0; | |
172 | |
173 void InterfaceSupport::zap_dead_locals_old() { | |
174 JavaThread* thread = JavaThread::current(); | |
175 if (zap_traversals == -1) // edit constant for debugging | |
176 warning("I am here"); | |
177 int zap_frame_count = 0; // count frames to help debugging | |
178 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { | |
179 sfs.current()->zap_dead_locals(thread, sfs.register_map()); | |
180 ++zap_frame_count; | |
181 } | |
182 ++zap_traversals; | |
183 } | |
184 | |
185 # endif | |
186 | |
187 | |
188 int deoptimizeAllCounter = 0; | |
189 int zombieAllCounter = 0; | |
190 | |
191 | |
192 void InterfaceSupport::zombieAll() { | |
193 if (is_init_completed() && zombieAllCounter > ZombieALotInterval) { | |
194 zombieAllCounter = 0; | |
195 VM_ZombieAll op; | |
196 VMThread::execute(&op); | |
197 } else { | |
198 zombieAllCounter++; | |
199 } | |
200 } | |
201 | |
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202 void InterfaceSupport::unlinkSymbols() { |
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203 VM_UnlinkSymbols op; |
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204 VMThread::execute(&op); |
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205 } |
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206 |
0 | 207 void InterfaceSupport::deoptimizeAll() { |
208 if (is_init_completed() ) { | |
209 if (DeoptimizeALot && deoptimizeAllCounter > DeoptimizeALotInterval) { | |
210 deoptimizeAllCounter = 0; | |
211 VM_DeoptimizeAll op; | |
212 VMThread::execute(&op); | |
213 } else if (DeoptimizeRandom && (deoptimizeAllCounter & 0x1f) == (os::random() & 0x1f)) { | |
214 VM_DeoptimizeAll op; | |
215 VMThread::execute(&op); | |
216 } | |
217 } | |
218 deoptimizeAllCounter++; | |
219 } | |
220 | |
221 | |
222 void InterfaceSupport::stress_derived_pointers() { | |
223 #ifdef COMPILER2 | |
224 JavaThread *thread = JavaThread::current(); | |
225 if (!is_init_completed()) return; | |
226 ResourceMark rm(thread); | |
227 bool found = false; | |
228 for (StackFrameStream sfs(thread); !sfs.is_done() && !found; sfs.next()) { | |
229 CodeBlob* cb = sfs.current()->cb(); | |
230 if (cb != NULL && cb->oop_maps() ) { | |
231 // Find oopmap for current method | |
232 OopMap* map = cb->oop_map_for_return_address(sfs.current()->pc()); | |
233 assert(map != NULL, "no oopmap found for pc"); | |
234 found = map->has_derived_pointer(); | |
235 } | |
236 } | |
237 if (found) { | |
238 // $$$ Not sure what to do here. | |
239 /* | |
240 Scavenge::invoke(0); | |
241 */ | |
242 } | |
243 #endif | |
244 } | |
245 | |
246 | |
247 void InterfaceSupport::verify_stack() { | |
248 JavaThread* thread = JavaThread::current(); | |
249 ResourceMark rm(thread); | |
250 // disabled because it throws warnings that oop maps should only be accessed | |
251 // in VM thread or during debugging | |
252 | |
253 if (!thread->has_pending_exception()) { | |
254 // verification does not work if there are pending exceptions | |
255 StackFrameStream sfs(thread); | |
256 CodeBlob* cb = sfs.current()->cb(); | |
257 // In case of exceptions we might not have a runtime_stub on | |
258 // top of stack, hence, all callee-saved registers are not going | |
259 // to be setup correctly, hence, we cannot do stack verify | |
260 if (cb != NULL && !(cb->is_runtime_stub() || cb->is_uncommon_trap_stub())) return; | |
261 | |
262 for (; !sfs.is_done(); sfs.next()) { | |
263 sfs.current()->verify(sfs.register_map()); | |
264 } | |
265 } | |
266 } | |
267 | |
268 | |
269 void InterfaceSupport::verify_last_frame() { | |
270 JavaThread* thread = JavaThread::current(); | |
271 ResourceMark rm(thread); | |
272 RegisterMap reg_map(thread); | |
273 frame fr = thread->last_frame(); | |
274 fr.verify(®_map); | |
275 } | |
276 | |
277 | |
278 #endif // ASSERT | |
279 | |
280 | |
281 void InterfaceSupport_init() { | |
282 #ifdef ASSERT | |
283 if (ScavengeALot || FullGCALot) { | |
284 srand(ScavengeALotInterval * FullGCALotInterval); | |
285 } | |
286 #endif | |
287 } |