19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
25 #define SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
26
27 #include "code/codeCache.hpp"
28 #include "gc/shared/oopStorageParState.hpp"
29 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
30 #include "gc/shenandoah/shenandoahHeap.hpp"
31 #include "gc/shenandoah/shenandoahPhaseTimings.hpp"
32 #include "gc/shared/strongRootsScope.hpp"
33 #include "gc/shared/weakProcessor.hpp"
34 #include "gc/shared/weakProcessorPhaseTimes.hpp"
35 #include "gc/shared/workgroup.hpp"
36 #include "memory/allocation.hpp"
37 #include "memory/iterator.hpp"
38
39 class ParallelCLDRootIterator {
40 public:
41 ParallelCLDRootIterator();
42 void root_cld_do(CLDClosure* strong, CLDClosure* weak);
43 };
44
45 enum Shenandoah_process_roots_tasks {
46 SHENANDOAH_RP_PS_Universe_oops_do,
47 SHENANDOAH_RP_PS_JNIHandles_oops_do,
48 SHENANDOAH_RP_PS_ObjectSynchronizer_oops_do,
49 SHENANDOAH_RP_PS_Management_oops_do,
50 SHENANDOAH_RP_PS_SystemDictionary_oops_do,
51 SHENANDOAH_RP_PS_jvmti_oops_do,
52 // Leave this one last.
53 SHENANDOAH_RP_PS_NumElements
54 };
55
56 class ShenandoahRootProcessor : public StackObj {
57 SubTasksDone* _process_strong_tasks;
58 StrongRootsScope _srs;
59 ShenandoahPhaseTimings::Phase _phase;
60 ParallelCLDRootIterator _cld_iterator;
61 ShenandoahAllCodeRootsIterator _coderoots_all_iterator;
62 CodeBlobClosure* _threads_nmethods_cl;
63 WeakProcessorPhaseTimes _weak_processor_timings;
64 WeakProcessor::Task _weak_processor_task;
65 bool _processed_weak_roots;
66
67 void process_java_roots(OopClosure* scan_non_heap_roots,
68 CLDClosure* scan_strong_clds,
69 CLDClosure* scan_weak_clds,
70 CodeBlobClosure* scan_strong_code,
71 ThreadClosure* thread_cl,
72 uint worker_i);
73
74 void process_vm_roots(OopClosure* scan_non_heap_roots,
75 uint worker_i);
76
77 void weak_processor_timing_to_shenandoah_timing(const WeakProcessorPhases::Phase wpp,
78 const ShenandoahPhaseTimings::GCParPhases spp,
79 ShenandoahWorkerTimings* worker_times) const;
80
81 public:
82 ShenandoahRootProcessor(ShenandoahHeap* heap, uint n_workers,
83 ShenandoahPhaseTimings::Phase phase);
84 ~ShenandoahRootProcessor();
85
86 // Apply oops, clds and blobs to all strongly reachable roots in the system.
87 // Optionally, apply class loader closure to weak clds, depending on class unloading
88 // for the particular GC cycles.
89 void process_strong_roots(OopClosure* oops,
90 CLDClosure* clds,
91 CodeBlobClosure* blobs,
92 ThreadClosure* thread_cl,
93 uint worker_id);
94
95 // Apply oops, clds and blobs to strongly reachable roots in the system
96 void process_all_roots(OopClosure* oops,
97 CLDClosure* clds,
98 CodeBlobClosure* blobs,
99 ThreadClosure* thread_cl,
100 uint worker_id);
101
102 // Apply oops, clds and blobs to strongly and weakly reachable roots in the system
103 template <typename IsAlive>
104 void update_all_roots(OopClosure* oops,
105 CLDClosure* clds,
106 CodeBlobClosure* blobs,
107 ThreadClosure* thread_cl,
108 uint worker_id);
109
110 // Number of worker threads used by the root processor.
111 uint n_workers() const;
112 };
113
114 class ShenandoahRootEvacuator : public StackObj {
115 SubTasksDone* _evacuation_tasks;
116 StrongRootsScope _srs;
117 ShenandoahPhaseTimings::Phase _phase;
118 ShenandoahCsetCodeRootsIterator _coderoots_cset_iterator;
119 ParallelCLDRootIterator _cld_iterator;
120 WeakProcessorPhaseTimes _weak_processor_timings;
121 WeakProcessor::Task _weak_processor_task;
122
123 enum Shenandoah_evacuate_roots_tasks {
124 SHENANDOAH_EVAC_Universe_oops_do,
125 SHENANDOAH_EVAC_ObjectSynchronizer_oops_do,
126 SHENANDOAH_EVAC_Management_oops_do,
127 SHENANDOAH_EVAC_SystemDictionary_oops_do,
128 SHENANDOAH_EVAC_jvmti_oops_do,
129 SHENANDOAH_EVAC_JNIHandles_oops_do,
130 // Leave this one last.
131 SHENANDOAH_EVAC_NumElements
132 };
133 public:
134 ShenandoahRootEvacuator(ShenandoahHeap* heap, uint n_workers,
135 ShenandoahPhaseTimings::Phase phase);
136 ~ShenandoahRootEvacuator();
137
138 void process_evacuate_roots(OopClosure* oops,
139 CodeBlobClosure* blobs,
140 uint worker_id);
141
142 // Number of worker threads used by the root processor.
143 uint n_workers() const;
144 };
145 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
|
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
25 #define SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
26
27 #include "code/codeCache.hpp"
28 #include "gc/shared/oopStorageParState.hpp"
29 #include "gc/shenandoah/shenandoahCodeRoots.hpp"
30 #include "gc/shenandoah/shenandoahHeap.hpp"
31 #include "gc/shenandoah/shenandoahPhaseTimings.hpp"
32 #include "gc/shared/strongRootsScope.hpp"
33 #include "gc/shared/weakProcessor.hpp"
34 #include "gc/shared/weakProcessorPhaseTimes.hpp"
35 #include "gc/shared/workgroup.hpp"
36 #include "memory/allocation.hpp"
37 #include "memory/iterator.hpp"
38
39 class ShenandoahSerialRoot {
40 public:
41 typedef void (*OopsDo)(OopClosure*);
42 private:
43 volatile bool _claimed;
44 OopsDo _oops_do;
45 ShenandoahPhaseTimings::GCParPhases _phase;
46
47 public:
48 ShenandoahSerialRoot(OopsDo oops_do, ShenandoahPhaseTimings::GCParPhases);
49 void oops_do(OopClosure* cl, uint worker_id);
50 };
51
52 class ShenandoahSerialRoots {
53 private:
54 ShenandoahSerialRoot _universe_root;
55 ShenandoahSerialRoot _object_synchronizer_root;
56 ShenandoahSerialRoot _management_root;
57 ShenandoahSerialRoot _system_dictionary_root;
58 ShenandoahSerialRoot _jvmti_root;
59 ShenandoahSerialRoot _jni_handle_root;
60 public:
61 ShenandoahSerialRoots();
62 void oops_do(OopClosure* cl, uint worker_id);
63 };
64
65 class ShenandoahThreadRoots {
66 private:
67 bool _is_par;
68 public:
69 ShenandoahThreadRoots(bool is_par);
70 ~ShenandoahThreadRoots();
71
72 void oops_do(OopClosure* oops_cl, CodeBlobClosure* code_cl, uint worker_id);
73 void threads_do(ThreadClosure* tc, uint worker_id);
74 };
75
76 class ShenandoahWeakRoots {
77 private:
78 WeakProcessorPhaseTimes _process_timings;
79 WeakProcessor::Task _task;
80 public:
81 ShenandoahWeakRoots(uint n_workers);
82 ~ShenandoahWeakRoots();
83
84 template <typename IsAlive, typename KeepAlive>
85 void oops_do(IsAlive* is_alive, KeepAlive* keep_alive, uint worker_id);
86 };
87
88 class ShenandoahStringDedupRoot {
89 public:
90 ShenandoahStringDedupRoot();
91 ~ShenandoahStringDedupRoot();
92
93 void oops_do(BoolObjectClosure* is_alive, OopClosure* keep_alive, uint worker_id);
94 };
95
96 template <typename ITR>
97 class ShenandoahCodeCacheRoot {
98 private:
99 ITR _coderoots_iterator;
100 public:
101 ShenandoahCodeCacheRoot();
102 ~ShenandoahCodeCacheRoot();
103
104 void code_blobs_do(CodeBlobClosure* blob_cl, uint worker_id);
105 };
106
107 class ShenandoahClassLoaderDataRoot {
108 public:
109 ShenandoahClassLoaderDataRoot();
110
111 void clds_do(CLDClosure* strong_clds, CLDClosure* weak_clds, uint worker_id);
112 };
113
114 class ShenandoahRootProcessor : public StackObj {
115 private:
116 ShenandoahSerialRoots _serial_roots;
117 ShenandoahClassLoaderDataRoot _cld_roots;
118 ShenandoahThreadRoots _thread_roots;
119 ShenandoahCodeCacheRoot<ShenandoahAllCodeRootsIterator> _code_roots;
120 ShenandoahPhaseTimings::Phase _phase;
121 public:
122 ShenandoahRootProcessor(uint n_workers, ShenandoahPhaseTimings::Phase phase);
123 ~ShenandoahRootProcessor();
124
125 // Apply oops, clds and blobs to all strongly reachable roots in the system,
126 // during class unloading cycle
127 void strong_roots_do(uint worker_id, OopClosure* cl);
128 void strong_roots_do(uint worker_id, OopClosure* oops, CLDClosure* clds, CodeBlobClosure* code, ThreadClosure* tc = NULL);
129
130 // Apply oops, clds and blobs to all strongly reachable roots and weakly reachable
131 // roots when class unloading is disabled during this cycle
132 void roots_do(uint worker_id, OopClosure* cl);
133 void roots_do(uint worker_id, OopClosure* oops, CLDClosure* clds, CodeBlobClosure* code, ThreadClosure* tc = NULL);
134 };
135
136 // Evacuate all roots at a safepoint
137 class ShenandoahRootEvacuator : public StackObj {
138 private:
139 ShenandoahSerialRoots _serial_roots;
140 ShenandoahClassLoaderDataRoot _cld_roots;
141 ShenandoahThreadRoots _thread_roots;
142 ShenandoahWeakRoots _weak_roots;
143 ShenandoahStringDedupRoot _dedup_roots;
144 ShenandoahCodeCacheRoot<ShenandoahCsetCodeRootsIterator> _code_roots;
145 ShenandoahPhaseTimings::Phase _phase;
146
147 public:
148 ShenandoahRootEvacuator(uint n_workers, ShenandoahPhaseTimings::Phase phase);
149 ~ShenandoahRootEvacuator();
150
151 void roots_do(uint worker_id, OopClosure* oops);
152 };
153
154 // Update all roots at a safepoint
155 class ShenandoahRootUpdater : public StackObj {
156 private:
157 ShenandoahSerialRoots _serial_roots;
158 ShenandoahClassLoaderDataRoot _cld_roots;
159 ShenandoahThreadRoots _thread_roots;
160 ShenandoahWeakRoots _weak_roots;
161 ShenandoahStringDedupRoot _dedup_roots;
162 ShenandoahCodeCacheRoot<ShenandoahCsetCodeRootsIterator> _code_roots;
163 ShenandoahPhaseTimings::Phase _phase;
164 bool _update_code_cache;
165
166 public:
167 ShenandoahRootUpdater(uint n_workers, ShenandoahPhaseTimings::Phase phase, bool update_code_cache);
168 ~ShenandoahRootUpdater();
169
170 template<typename IsAlive, typename KeepAlive>
171 void roots_do(uint worker_id, IsAlive* is_alive, KeepAlive* keep_alive);
172 };
173
174 // Adjuster all roots at a safepoint during full gc
175 class ShenandoahRootAdjuster : public StackObj {
176 private:
177 ShenandoahSerialRoots _serial_roots;
178 ShenandoahClassLoaderDataRoot _cld_roots;
179 ShenandoahThreadRoots _thread_roots;
180 ShenandoahWeakRoots _weak_roots;
181 ShenandoahStringDedupRoot _dedup_roots;
182 ShenandoahCodeCacheRoot<ShenandoahAllCodeRootsIterator> _code_roots;
183 ShenandoahPhaseTimings::Phase _phase;
184
185 public:
186 ShenandoahRootAdjuster(uint n_workers, ShenandoahPhaseTimings::Phase phase);
187 ~ShenandoahRootAdjuster();
188
189 void roots_do(uint worker_id, OopClosure* oops);
190 };
191
192 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
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