31 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
32 #include "gc_implementation/shared/gcTimer.hpp"
33 #include "gc_implementation/shared/gcTraceTime.hpp"
34 #include "gc_interface/collectedHeap.hpp"
35 #include "memory/universe.hpp"
36 #include "oops/objArrayKlass.inline.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "prims/jvmtiExport.hpp"
39 #include "runtime/fprofiler.hpp"
40 #include "runtime/jniHandles.hpp"
41 #include "runtime/thread.hpp"
42 #include "runtime/vmThread.hpp"
43 #include "services/management.hpp"
44 #include "utilities/stack.inline.hpp"
45
46 //
47 // ThreadRootsMarkingTask
48 //
49
50 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
51 assert(Universe::heap()->is_gc_active(), "called outside gc");
52
53 ResourceMark rm;
54
55 NOT_PRODUCT(GCTraceTime tm("ThreadRootsMarkingTask",
56 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
57 ParCompactionManager* cm =
58 ParCompactionManager::gc_thread_compaction_manager(which);
59
60 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
61 CLDToOopClosure mark_and_push_from_clds(&mark_and_push_closure, true);
62 MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
63
64 if (_java_thread != NULL)
65 _java_thread->oops_do(
66 &mark_and_push_closure,
67 &mark_and_push_from_clds,
68 &mark_and_push_in_blobs);
69
70 if (_vm_thread != NULL)
71 _vm_thread->oops_do(
72 &mark_and_push_closure,
73 &mark_and_push_from_clds,
74 &mark_and_push_in_blobs);
75
76 // Do the real work
77 cm->follow_marking_stacks();
78 }
79
80
81 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
82 assert(Universe::heap()->is_gc_active(), "called outside gc");
83
84 NOT_PRODUCT(GCTraceTime tm("MarkFromRootsTask",
85 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
86 ParCompactionManager* cm =
87 ParCompactionManager::gc_thread_compaction_manager(which);
88 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
89 PSParallelCompact::FollowKlassClosure follow_klass_closure(&mark_and_push_closure);
90
91 switch (_root_type) {
92 case universe:
93 Universe::oops_do(&mark_and_push_closure);
94 break;
95
96 case jni_handles:
97 JNIHandles::oops_do(&mark_and_push_closure);
98 break;
99
100 case threads:
101 {
102 ResourceMark rm;
133 case code_cache:
134 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them.
135 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure));
136 break;
137
138 default:
139 fatal("Unknown root type");
140 }
141
142 // Do the real work
143 cm->follow_marking_stacks();
144 }
145
146
147 //
148 // RefProcTaskProxy
149 //
150
151 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
152 {
153 assert(Universe::heap()->is_gc_active(), "called outside gc");
154
155 NOT_PRODUCT(GCTraceTime tm("RefProcTask",
156 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
157 ParCompactionManager* cm =
158 ParCompactionManager::gc_thread_compaction_manager(which);
159 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
160 PSParallelCompact::FollowStackClosure follow_stack_closure(cm);
161 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
162 mark_and_push_closure, follow_stack_closure);
163 }
164
165 //
166 // RefProcTaskExecutor
167 //
168
169 void RefProcTaskExecutor::execute(ProcessTask& task)
170 {
171 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
172 uint parallel_gc_threads = heap->gc_task_manager()->workers();
173 uint active_gc_threads = heap->gc_task_manager()->active_workers();
174 RegionTaskQueueSet* qset = ParCompactionManager::region_array();
175 ParallelTaskTerminator terminator(active_gc_threads, qset);
176 GCTaskQueue* q = GCTaskQueue::create();
177 for(uint i=0; i<parallel_gc_threads; i++) {
178 q->enqueue(new RefProcTaskProxy(task, i));
179 }
180 if (task.marks_oops_alive()) {
181 if (parallel_gc_threads>1) {
182 for (uint j=0; j<active_gc_threads; j++) {
183 q->enqueue(new StealMarkingTask(&terminator));
184 }
185 }
186 }
187 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
188 }
189
190 void RefProcTaskExecutor::execute(EnqueueTask& task)
191 {
192 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
193 uint parallel_gc_threads = heap->gc_task_manager()->workers();
194 GCTaskQueue* q = GCTaskQueue::create();
195 for(uint i=0; i<parallel_gc_threads; i++) {
196 q->enqueue(new RefEnqueueTaskProxy(task, i));
197 }
198 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
199 }
200
201 //
202 // StealMarkingTask
203 //
204
205 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
206 _terminator(t) {}
207
208 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
209 assert(Universe::heap()->is_gc_active(), "called outside gc");
210
211 NOT_PRODUCT(GCTraceTime tm("StealMarkingTask",
212 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
213
214 ParCompactionManager* cm =
215 ParCompactionManager::gc_thread_compaction_manager(which);
216 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
217
218 oop obj = NULL;
219 ObjArrayTask task;
220 int random_seed = 17;
221 do {
222 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) {
223 cm->follow_contents((objArrayOop)task.obj(), task.index());
224 cm->follow_marking_stacks();
225 }
226 while (ParCompactionManager::steal(which, &random_seed, obj)) {
227 cm->follow_contents(obj);
228 cm->follow_marking_stacks();
229 }
230 } while (!terminator()->offer_termination());
231 }
232
233 //
234 // StealRegionCompactionTask
235 //
236
237 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t):
238 _terminator(t) {}
239
240 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) {
241 assert(Universe::heap()->is_gc_active(), "called outside gc");
242
243 NOT_PRODUCT(GCTraceTime tm("StealRegionCompactionTask",
244 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
245
246 ParCompactionManager* cm =
247 ParCompactionManager::gc_thread_compaction_manager(which);
248
249
250 // If not all threads are active, get a draining stack
251 // from the list. Else, just use this threads draining stack.
252 uint which_stack_index;
253 bool use_all_workers = manager->all_workers_active();
254 if (use_all_workers) {
255 which_stack_index = which;
256 assert(manager->active_workers() == ParallelGCThreads,
257 err_msg("all_workers_active has been incorrectly set: "
258 " active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
259 ParallelGCThreads));
260 } else {
261 which_stack_index = ParCompactionManager::pop_recycled_stack_index();
303 size_t region_index_start,
304 size_t region_index_end) :
305 _space_id(space_id), _region_index_start(region_index_start),
306 _region_index_end(region_index_end) {}
307
308 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) {
309
310 NOT_PRODUCT(GCTraceTime tm("UpdateDensePrefixTask",
311 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
312
313 ParCompactionManager* cm =
314 ParCompactionManager::gc_thread_compaction_manager(which);
315
316 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm,
317 _space_id,
318 _region_index_start,
319 _region_index_end);
320 }
321
322 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) {
323 assert(Universe::heap()->is_gc_active(), "called outside gc");
324
325 NOT_PRODUCT(GCTraceTime tm("DrainStacksCompactionTask",
326 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
327
328 ParCompactionManager* cm =
329 ParCompactionManager::gc_thread_compaction_manager(which);
330
331 uint which_stack_index;
332 bool use_all_workers = manager->all_workers_active();
333 if (use_all_workers) {
334 which_stack_index = which;
335 assert(manager->active_workers() == ParallelGCThreads,
336 err_msg("all_workers_active has been incorrectly set: "
337 " active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
338 ParallelGCThreads));
339 } else {
340 which_stack_index = stack_index();
341 }
342
343 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
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31 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
32 #include "gc_implementation/shared/gcTimer.hpp"
33 #include "gc_implementation/shared/gcTraceTime.hpp"
34 #include "gc_interface/collectedHeap.hpp"
35 #include "memory/universe.hpp"
36 #include "oops/objArrayKlass.inline.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "prims/jvmtiExport.hpp"
39 #include "runtime/fprofiler.hpp"
40 #include "runtime/jniHandles.hpp"
41 #include "runtime/thread.hpp"
42 #include "runtime/vmThread.hpp"
43 #include "services/management.hpp"
44 #include "utilities/stack.inline.hpp"
45
46 //
47 // ThreadRootsMarkingTask
48 //
49
50 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
51 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
52
53 ResourceMark rm;
54
55 NOT_PRODUCT(GCTraceTime tm("ThreadRootsMarkingTask",
56 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
57 ParCompactionManager* cm =
58 ParCompactionManager::gc_thread_compaction_manager(which);
59
60 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
61 CLDToOopClosure mark_and_push_from_clds(&mark_and_push_closure, true);
62 MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
63
64 if (_java_thread != NULL)
65 _java_thread->oops_do(
66 &mark_and_push_closure,
67 &mark_and_push_from_clds,
68 &mark_and_push_in_blobs);
69
70 if (_vm_thread != NULL)
71 _vm_thread->oops_do(
72 &mark_and_push_closure,
73 &mark_and_push_from_clds,
74 &mark_and_push_in_blobs);
75
76 // Do the real work
77 cm->follow_marking_stacks();
78 }
79
80
81 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
82 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
83
84 NOT_PRODUCT(GCTraceTime tm("MarkFromRootsTask",
85 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
86 ParCompactionManager* cm =
87 ParCompactionManager::gc_thread_compaction_manager(which);
88 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
89 PSParallelCompact::FollowKlassClosure follow_klass_closure(&mark_and_push_closure);
90
91 switch (_root_type) {
92 case universe:
93 Universe::oops_do(&mark_and_push_closure);
94 break;
95
96 case jni_handles:
97 JNIHandles::oops_do(&mark_and_push_closure);
98 break;
99
100 case threads:
101 {
102 ResourceMark rm;
133 case code_cache:
134 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them.
135 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure));
136 break;
137
138 default:
139 fatal("Unknown root type");
140 }
141
142 // Do the real work
143 cm->follow_marking_stacks();
144 }
145
146
147 //
148 // RefProcTaskProxy
149 //
150
151 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
152 {
153 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
154
155 NOT_PRODUCT(GCTraceTime tm("RefProcTask",
156 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
157 ParCompactionManager* cm =
158 ParCompactionManager::gc_thread_compaction_manager(which);
159 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
160 PSParallelCompact::FollowStackClosure follow_stack_closure(cm);
161 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
162 mark_and_push_closure, follow_stack_closure);
163 }
164
165 //
166 // RefProcTaskExecutor
167 //
168
169 void RefProcTaskExecutor::execute(ProcessTask& task)
170 {
171 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
172 uint parallel_gc_threads = heap->gc_task_manager()->workers();
173 uint active_gc_threads = heap->gc_task_manager()->active_workers();
174 RegionTaskQueueSet* qset = ParCompactionManager::region_array();
175 ParallelTaskTerminator terminator(active_gc_threads, qset);
176 GCTaskQueue* q = GCTaskQueue::create();
177 for(uint i=0; i<parallel_gc_threads; i++) {
178 q->enqueue(new RefProcTaskProxy(task, i));
179 }
180 if (task.marks_oops_alive()) {
181 if (parallel_gc_threads>1) {
182 for (uint j=0; j<active_gc_threads; j++) {
183 q->enqueue(new StealMarkingTask(&terminator));
184 }
185 }
186 }
187 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
188 }
189
190 void RefProcTaskExecutor::execute(EnqueueTask& task)
191 {
192 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
193 uint parallel_gc_threads = heap->gc_task_manager()->workers();
194 GCTaskQueue* q = GCTaskQueue::create();
195 for(uint i=0; i<parallel_gc_threads; i++) {
196 q->enqueue(new RefEnqueueTaskProxy(task, i));
197 }
198 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
199 }
200
201 //
202 // StealMarkingTask
203 //
204
205 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
206 _terminator(t) {}
207
208 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
209 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
210
211 NOT_PRODUCT(GCTraceTime tm("StealMarkingTask",
212 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
213
214 ParCompactionManager* cm =
215 ParCompactionManager::gc_thread_compaction_manager(which);
216 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
217
218 oop obj = NULL;
219 ObjArrayTask task;
220 int random_seed = 17;
221 do {
222 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) {
223 cm->follow_contents((objArrayOop)task.obj(), task.index());
224 cm->follow_marking_stacks();
225 }
226 while (ParCompactionManager::steal(which, &random_seed, obj)) {
227 cm->follow_contents(obj);
228 cm->follow_marking_stacks();
229 }
230 } while (!terminator()->offer_termination());
231 }
232
233 //
234 // StealRegionCompactionTask
235 //
236
237 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t):
238 _terminator(t) {}
239
240 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) {
241 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
242
243 NOT_PRODUCT(GCTraceTime tm("StealRegionCompactionTask",
244 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
245
246 ParCompactionManager* cm =
247 ParCompactionManager::gc_thread_compaction_manager(which);
248
249
250 // If not all threads are active, get a draining stack
251 // from the list. Else, just use this threads draining stack.
252 uint which_stack_index;
253 bool use_all_workers = manager->all_workers_active();
254 if (use_all_workers) {
255 which_stack_index = which;
256 assert(manager->active_workers() == ParallelGCThreads,
257 err_msg("all_workers_active has been incorrectly set: "
258 " active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
259 ParallelGCThreads));
260 } else {
261 which_stack_index = ParCompactionManager::pop_recycled_stack_index();
303 size_t region_index_start,
304 size_t region_index_end) :
305 _space_id(space_id), _region_index_start(region_index_start),
306 _region_index_end(region_index_end) {}
307
308 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) {
309
310 NOT_PRODUCT(GCTraceTime tm("UpdateDensePrefixTask",
311 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
312
313 ParCompactionManager* cm =
314 ParCompactionManager::gc_thread_compaction_manager(which);
315
316 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm,
317 _space_id,
318 _region_index_start,
319 _region_index_end);
320 }
321
322 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) {
323 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
324
325 NOT_PRODUCT(GCTraceTime tm("DrainStacksCompactionTask",
326 PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
327
328 ParCompactionManager* cm =
329 ParCompactionManager::gc_thread_compaction_manager(which);
330
331 uint which_stack_index;
332 bool use_all_workers = manager->all_workers_active();
333 if (use_all_workers) {
334 which_stack_index = which;
335 assert(manager->active_workers() == ParallelGCThreads,
336 err_msg("all_workers_active has been incorrectly set: "
337 " active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
338 ParallelGCThreads));
339 } else {
340 which_stack_index = stack_index();
341 }
342
343 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
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