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src/share/vm/gc/parallel/pcTasks.cpp

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  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) "


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