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)); 57 ParCompactionManager* cm = 58 ParCompactionManager::gc_thread_compaction_manager(which); 59 60 ParCompactionManager::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)); 86 ParCompactionManager* cm = 87 ParCompactionManager::gc_thread_compaction_manager(which); 88 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 89 ParCompactionManager::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; 103 MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations); 104 CLDToOopClosure mark_and_push_from_cld(&mark_and_push_closure); 105 Threads::oops_do(&mark_and_push_closure, &mark_and_push_from_cld, &each_active_code_blob); 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)); 157 ParCompactionManager* cm = 158 ParCompactionManager::gc_thread_compaction_manager(which); 159 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 160 ParCompactionManager::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(); 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)); 213 214 ParCompactionManager* cm = 215 ParCompactionManager::gc_thread_compaction_manager(which); 216 ParCompactionManager::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)); 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 "all_workers_active has been incorrectly set: " 258 " active %d ParallelGCThreads %u", manager->active_workers(), 259 ParallelGCThreads); 260 } else { 261 which_stack_index = ParCompactionManager::pop_recycled_stack_index(); 262 } 263 264 cm->set_region_stack_index(which_stack_index); 265 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index)); 290 cm->drain_region_stacks(); 291 } else { 292 if (terminator()->offer_termination()) { 293 break; 294 } 295 // Go around again. 296 } 297 } 298 return; 299 } 300 301 UpdateDensePrefixTask::UpdateDensePrefixTask( 302 PSParallelCompact::SpaceId space_id, 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)); 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)); 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 "all_workers_active has been incorrectly set: " 337 " active %d ParallelGCThreads %u", 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)); 344 if (TraceDynamicGCThreads) { 345 gclog_or_tty->print_cr("DrainStacksCompactionTask::do_it which = %d " 346 "which_stack_index = %d/empty(%d) " | 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 ParCompactionManager* cm = 56 ParCompactionManager::gc_thread_compaction_manager(which); 57 58 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 59 CLDToOopClosure mark_and_push_from_clds(&mark_and_push_closure, true); 60 MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations); 61 62 if (_java_thread != NULL) 63 _java_thread->oops_do( 64 &mark_and_push_closure, 65 &mark_and_push_from_clds, 66 &mark_and_push_in_blobs); 67 68 if (_vm_thread != NULL) 69 _vm_thread->oops_do( 70 &mark_and_push_closure, 71 &mark_and_push_from_clds, 72 &mark_and_push_in_blobs); 73 74 // Do the real work 75 cm->follow_marking_stacks(); 76 } 77 78 79 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { 80 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); 81 82 ParCompactionManager* cm = 83 ParCompactionManager::gc_thread_compaction_manager(which); 84 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 85 ParCompactionManager::FollowKlassClosure follow_klass_closure(&mark_and_push_closure); 86 87 switch (_root_type) { 88 case universe: 89 Universe::oops_do(&mark_and_push_closure); 90 break; 91 92 case jni_handles: 93 JNIHandles::oops_do(&mark_and_push_closure); 94 break; 95 96 case threads: 97 { 98 ResourceMark rm; 99 MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations); 100 CLDToOopClosure mark_and_push_from_cld(&mark_and_push_closure); 101 Threads::oops_do(&mark_and_push_closure, &mark_and_push_from_cld, &each_active_code_blob); 131 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); 132 break; 133 134 default: 135 fatal("Unknown root type"); 136 } 137 138 // Do the real work 139 cm->follow_marking_stacks(); 140 } 141 142 143 // 144 // RefProcTaskProxy 145 // 146 147 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) 148 { 149 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); 150 151 ParCompactionManager* cm = 152 ParCompactionManager::gc_thread_compaction_manager(which); 153 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 154 ParCompactionManager::FollowStackClosure follow_stack_closure(cm); 155 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), 156 mark_and_push_closure, follow_stack_closure); 157 } 158 159 // 160 // RefProcTaskExecutor 161 // 162 163 void RefProcTaskExecutor::execute(ProcessTask& task) 164 { 165 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); 166 uint parallel_gc_threads = heap->gc_task_manager()->workers(); 167 uint active_gc_threads = heap->gc_task_manager()->active_workers(); 168 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); 169 ParallelTaskTerminator terminator(active_gc_threads, qset); 170 GCTaskQueue* q = GCTaskQueue::create(); 185 { 186 ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); 187 uint parallel_gc_threads = heap->gc_task_manager()->workers(); 188 GCTaskQueue* q = GCTaskQueue::create(); 189 for(uint i=0; i<parallel_gc_threads; i++) { 190 q->enqueue(new RefEnqueueTaskProxy(task, i)); 191 } 192 PSParallelCompact::gc_task_manager()->execute_and_wait(q); 193 } 194 195 // 196 // StealMarkingTask 197 // 198 199 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : 200 _terminator(t) {} 201 202 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { 203 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); 204 205 ParCompactionManager* cm = 206 ParCompactionManager::gc_thread_compaction_manager(which); 207 ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); 208 209 oop obj = NULL; 210 ObjArrayTask task; 211 int random_seed = 17; 212 do { 213 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { 214 cm->follow_contents((objArrayOop)task.obj(), task.index()); 215 cm->follow_marking_stacks(); 216 } 217 while (ParCompactionManager::steal(which, &random_seed, obj)) { 218 cm->follow_contents(obj); 219 cm->follow_marking_stacks(); 220 } 221 } while (!terminator()->offer_termination()); 222 } 223 224 // 225 // StealRegionCompactionTask 226 // 227 228 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): 229 _terminator(t) {} 230 231 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { 232 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); 233 234 ParCompactionManager* cm = 235 ParCompactionManager::gc_thread_compaction_manager(which); 236 237 238 // If not all threads are active, get a draining stack 239 // from the list. Else, just use this threads draining stack. 240 uint which_stack_index; 241 bool use_all_workers = manager->all_workers_active(); 242 if (use_all_workers) { 243 which_stack_index = which; 244 assert(manager->active_workers() == ParallelGCThreads, 245 "all_workers_active has been incorrectly set: " 246 " active %d ParallelGCThreads %u", manager->active_workers(), 247 ParallelGCThreads); 248 } else { 249 which_stack_index = ParCompactionManager::pop_recycled_stack_index(); 250 } 251 252 cm->set_region_stack_index(which_stack_index); 253 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index)); 278 cm->drain_region_stacks(); 279 } else { 280 if (terminator()->offer_termination()) { 281 break; 282 } 283 // Go around again. 284 } 285 } 286 return; 287 } 288 289 UpdateDensePrefixTask::UpdateDensePrefixTask( 290 PSParallelCompact::SpaceId space_id, 291 size_t region_index_start, 292 size_t region_index_end) : 293 _space_id(space_id), _region_index_start(region_index_start), 294 _region_index_end(region_index_end) {} 295 296 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { 297 298 ParCompactionManager* cm = 299 ParCompactionManager::gc_thread_compaction_manager(which); 300 301 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, 302 _space_id, 303 _region_index_start, 304 _region_index_end); 305 } 306 307 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { 308 assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); 309 310 ParCompactionManager* cm = 311 ParCompactionManager::gc_thread_compaction_manager(which); 312 313 uint which_stack_index; 314 bool use_all_workers = manager->all_workers_active(); 315 if (use_all_workers) { 316 which_stack_index = which; 317 assert(manager->active_workers() == ParallelGCThreads, 318 "all_workers_active has been incorrectly set: " 319 " active %d ParallelGCThreads %u", manager->active_workers(), 320 ParallelGCThreads); 321 } else { 322 which_stack_index = stack_index(); 323 } 324 325 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index)); 326 if (TraceDynamicGCThreads) { 327 gclog_or_tty->print_cr("DrainStacksCompactionTask::do_it which = %d " 328 "which_stack_index = %d/empty(%d) " |