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

8211446: Replace oop_pc_follow_contents with oop_iterate and closure

17  *                                                                                                                         
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA                                                 
19  * or visit www.oracle.com if you need additional information or have any                                                  
20  * questions.                                                                                                              
21  *                                                                                                                         
22  */                                                                                                                        
23 
24 #include "precompiled.hpp"                                                                                                 
25 #include "aot/aotLoader.hpp"                                                                                               
26 #include "classfile/classLoaderDataGraph.hpp"                                                                              
27 #include "classfile/systemDictionary.hpp"                                                                                  
28 #include "code/codeCache.hpp"                                                                                              
29 #include "gc/parallel/parallelScavengeHeap.hpp"                                                                            
30 #include "gc/parallel/pcTasks.hpp"                                                                                         
31 #include "gc/parallel/psCompactionManager.inline.hpp"                                                                      
32 #include "gc/parallel/psParallelCompact.inline.hpp"                                                                        
33 #include "gc/shared/collectedHeap.hpp"                                                                                     
34 #include "gc/shared/gcTimer.hpp"                                                                                           
35 #include "gc/shared/gcTraceTime.inline.hpp"                                                                                
36 #include "logging/log.hpp"                                                                                                 
                                                                                                                           
37 #include "memory/resourceArea.hpp"                                                                                         
38 #include "memory/universe.hpp"                                                                                             
39 #include "oops/objArrayKlass.inline.hpp"                                                                                   
40 #include "oops/oop.inline.hpp"                                                                                             
41 #include "prims/jvmtiExport.hpp"                                                                                           
42 #include "runtime/jniHandles.hpp"                                                                                          
43 #include "runtime/thread.hpp"                                                                                              
44 #include "runtime/vmThread.hpp"                                                                                            
45 #include "services/management.hpp"                                                                                         
46 #include "utilities/stack.inline.hpp"                                                                                      
47 
48 //                                                                                                                         
49 // ThreadRootsMarkingTask                                                                                                  
50 //                                                                                                                         
51 
52 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {                                                   
53   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");                                               
54 
55   ResourceMark rm;                                                                                                         
56 
57   ParCompactionManager* cm =                                                                                               
58     ParCompactionManager::gc_thread_compaction_manager(which);                                                             
59 
60   ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);                                                      
61   MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);            
62 
63   _thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs);                                                       
64 
65   // Do the real work                                                                                                      
66   cm->follow_marking_stacks();                                                                                             
67 }                                                                                                                          
68 
69 
70 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {                                                        
71   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");                                               
72 
73   ParCompactionManager* cm =                                                                                               
74     ParCompactionManager::gc_thread_compaction_manager(which);                                                             
75   ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);                                                      
76 
77   switch (_root_type) {                                                                                                    
78     case universe:                                                                                                         
79       Universe::oops_do(&mark_and_push_closure);                                                                           
80       break;                                                                                                               
81 
82     case jni_handles:                                                                                                      
83       JNIHandles::oops_do(&mark_and_push_closure);                                                                         
84       break;                                                                                                               
85 
86     case threads:                                                                                                          
87     {                                                                                                                      
88       ResourceMark rm;                                                                                                     
89       MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);         
90       Threads::oops_do(&mark_and_push_closure, &each_active_code_blob);                                                    
91     }                                                                                                                      
92     break;                                                                                                                 
93 
94     case object_synchronizer:                                                                                              

17  *
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19  * or visit www.oracle.com if you need additional information or have any
20  * questions.
21  *
22  */
23 
24 #include "precompiled.hpp"
25 #include "aot/aotLoader.hpp"
26 #include "classfile/classLoaderDataGraph.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "code/codeCache.hpp"
29 #include "gc/parallel/parallelScavengeHeap.hpp"
30 #include "gc/parallel/pcTasks.hpp"
31 #include "gc/parallel/psCompactionManager.inline.hpp"
32 #include "gc/parallel/psParallelCompact.inline.hpp"
33 #include "gc/shared/collectedHeap.hpp"
34 #include "gc/shared/gcTimer.hpp"
35 #include "gc/shared/gcTraceTime.inline.hpp"
36 #include "logging/log.hpp"
37 #include "memory/iterator.inline.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "memory/universe.hpp"
40 #include "oops/objArrayKlass.inline.hpp"
41 #include "oops/oop.inline.hpp"
42 #include "prims/jvmtiExport.hpp"
43 #include "runtime/jniHandles.hpp"
44 #include "runtime/thread.hpp"
45 #include "runtime/vmThread.hpp"
46 #include "services/management.hpp"
47 #include "utilities/stack.inline.hpp"
48 
49 //
50 // ThreadRootsMarkingTask
51 //
52 
53 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
54   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
55 
56   ResourceMark rm;
57 
58   ParCompactionManager* cm =
59     ParCompactionManager::gc_thread_compaction_manager(which);
60 
61   PSMarkAndPushClosure mark_and_push_closure(cm);
62   MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
63 
64   _thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs);
65 
66   // Do the real work
67   cm->follow_marking_stacks();
68 }
69 
70 
71 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
72   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
73 
74   ParCompactionManager* cm =
75     ParCompactionManager::gc_thread_compaction_manager(which);
76   PSMarkAndPushClosure mark_and_push_closure(cm);
77 
78   switch (_root_type) {
79     case universe:
80       Universe::oops_do(&mark_and_push_closure);
81       break;
82 
83     case jni_handles:
84       JNIHandles::oops_do(&mark_and_push_closure);
85       break;
86 
87     case threads:
88     {
89       ResourceMark rm;
90       MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
91       Threads::oops_do(&mark_and_push_closure, &each_active_code_blob);
92     }
93     break;
94 
95     case object_synchronizer:

121 
122     default:                                                                                                               
123       fatal("Unknown root type");                                                                                          
124   }                                                                                                                        
125 
126   // Do the real work                                                                                                      
127   cm->follow_marking_stacks();                                                                                             
128 }                                                                                                                          
129 
130 
131 //                                                                                                                         
132 // RefProcTaskProxy                                                                                                        
133 //                                                                                                                         
134 
135 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)                                                           
136 {                                                                                                                          
137   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");                                               
138 
139   ParCompactionManager* cm =                                                                                               
140     ParCompactionManager::gc_thread_compaction_manager(which);                                                             
141   ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);                                                      
142   ParCompactionManager::FollowStackClosure follow_stack_closure(cm);                                                       
143   _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),                                                          
144                 mark_and_push_closure, follow_stack_closure);                                                              
145 }                                                                                                                          
146 
147 //                                                                                                                         
148 // RefProcTaskExecutor                                                                                                     
149 //                                                                                                                         
150 
151 void RefProcTaskExecutor::execute(ProcessTask& task, uint ergo_workers)                                                    
152 {                                                                                                                          
153   ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();                                                               
154   uint active_gc_threads = heap->gc_task_manager()->active_workers();                                                      
155   assert(active_gc_threads == ergo_workers,                                                                                
156          "Ergonomically chosen workers (%u) must be equal to active workers (%u)",                                         
157          ergo_workers, active_gc_threads);                                                                                 
158   OopTaskQueueSet* qset = ParCompactionManager::stack_array();                                                             
159   ParallelTaskTerminator terminator(active_gc_threads, qset);                                                              
160   GCTaskQueue* q = GCTaskQueue::create();                                                                                  

122 
123     default:
124       fatal("Unknown root type");
125   }
126 
127   // Do the real work
128   cm->follow_marking_stacks();
129 }
130 
131 
132 //
133 // RefProcTaskProxy
134 //
135 
136 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
137 {
138   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
139 
140   ParCompactionManager* cm =
141     ParCompactionManager::gc_thread_compaction_manager(which);
142   PSMarkAndPushClosure mark_and_push_closure(cm);
143   ParCompactionManager::FollowStackClosure follow_stack_closure(cm);
144   _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
145                 mark_and_push_closure, follow_stack_closure);
146 }
147 
148 //
149 // RefProcTaskExecutor
150 //
151 
152 void RefProcTaskExecutor::execute(ProcessTask& task, uint ergo_workers)
153 {
154   ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
155   uint active_gc_threads = heap->gc_task_manager()->active_workers();
156   assert(active_gc_threads == ergo_workers,
157          "Ergonomically chosen workers (%u) must be equal to active workers (%u)",
158          ergo_workers, active_gc_threads);
159   OopTaskQueueSet* qset = ParCompactionManager::stack_array();
160   ParallelTaskTerminator terminator(active_gc_threads, qset);
161   GCTaskQueue* q = GCTaskQueue::create();

164   if (task.marks_oops_alive() && (active_gc_threads>1)) {                                                                  
165     for (uint j=0; j<active_gc_threads; j++) {                                                                             
166       q->enqueue(new StealMarkingTask(&terminator));                                                                       
167     }                                                                                                                      
168   }                                                                                                                        
169   PSParallelCompact::gc_task_manager()->execute_and_wait(q);                                                               
170 }                                                                                                                          
171 
172 //                                                                                                                         
173 // StealMarkingTask                                                                                                        
174 //                                                                                                                         
175 
176 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :                                                            
177   _terminator(t) {}                                                                                                        
178 
179 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {                                                         
180   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");                                               
181 
182   ParCompactionManager* cm =                                                                                               
183     ParCompactionManager::gc_thread_compaction_manager(which);                                                             
184   ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);                                                      
185 
186   oop obj = NULL;                                                                                                          
187   ObjArrayTask task;                                                                                                       
188   do {                                                                                                                     
189     while (ParCompactionManager::steal_objarray(which,  task)) {                                                           
190       cm->follow_contents((objArrayOop)task.obj(), task.index());                                                          
191       cm->follow_marking_stacks();                                                                                         
192     }                                                                                                                      
193     while (ParCompactionManager::steal(which, obj)) {                                                                      
194       cm->follow_contents(obj);                                                                                            
195       cm->follow_marking_stacks();                                                                                         
196     }                                                                                                                      
197   } while (!terminator()->offer_termination());                                                                            
198 }                                                                                                                          
199 
200 //                                                                                                                         
201 // CompactionWithStealingTask                                                                                              
202 //                                                                                                                         
203 
204 CompactionWithStealingTask::CompactionWithStealingTask(ParallelTaskTerminator* t):                                         
205   _terminator(t) {}                                                                                                        
206 
207 void CompactionWithStealingTask::do_it(GCTaskManager* manager, uint which) {                                               
208   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");                                               
209 

165   if (task.marks_oops_alive() && (active_gc_threads>1)) {
166     for (uint j=0; j<active_gc_threads; j++) {
167       q->enqueue(new StealMarkingTask(&terminator));
168     }
169   }
170   PSParallelCompact::gc_task_manager()->execute_and_wait(q);
171 }
172 
173 //
174 // StealMarkingTask
175 //
176 
177 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
178   _terminator(t) {}
179 
180 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
181   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
182 
183   ParCompactionManager* cm =
184     ParCompactionManager::gc_thread_compaction_manager(which);

185 
186   oop obj = NULL;
187   ObjArrayTask task;
188   do {
189     while (ParCompactionManager::steal_objarray(which,  task)) {
190       cm->follow_array((objArrayOop)task.obj(), task.index());
191       cm->follow_marking_stacks();
192     }
193     while (ParCompactionManager::steal(which, obj)) {
194       cm->follow_contents(obj);
195       cm->follow_marking_stacks();
196     }
197   } while (!terminator()->offer_termination());
198 }
199 
200 //
201 // CompactionWithStealingTask
202 //
203 
204 CompactionWithStealingTask::CompactionWithStealingTask(ParallelTaskTerminator* t):
205   _terminator(t) {}
206 
207 void CompactionWithStealingTask::do_it(GCTaskManager* manager, uint which) {
208   assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
209 
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