106 }
107 return insert(&new_rec);
108 }
109
110 bool VMMemPointerIterator::insert_record_after(MemPointerRecord* rec) {
111 VMMemRegionEx new_rec;
112 assert(rec->is_allocation_record() || rec->is_commit_record(),
113 "Sanity check");
114 if (MemTracker::track_callsite()) {
115 new_rec.init((MemPointerRecordEx*)rec);
116 } else {
117 new_rec.init(rec);
118 }
119 return insert_after(&new_rec);
120 }
121
122 // we don't consolidate reserved regions, since they may be categorized
123 // in different types.
124 bool VMMemPointerIterator::add_reserved_region(MemPointerRecord* rec) {
125 assert(rec->is_allocation_record(), "Sanity check");
126 VMMemRegion* cur = (VMMemRegion*)current();
127
128 // we don't have anything yet
129 if (cur == NULL) {
130 return insert_record(rec);
131 }
132
133 assert(cur->is_reserved_region(), "Sanity check");
134 // duplicated records
135 if (cur->is_same_region(rec)) {
136 return true;
137 }
138 assert(cur->base() > rec->addr(), "Just check: locate()");
139 assert(!cur->overlaps_region(rec), "overlapping reserved regions");
140 return insert_record(rec);
141 }
142
143 // we do consolidate committed regions
144 bool VMMemPointerIterator::add_committed_region(MemPointerRecord* rec) {
145 assert(rec->is_commit_record(), "Sanity check");
146 VMMemRegion* reserved_rgn = (VMMemRegion*)current();
147 assert(reserved_rgn->is_reserved_region() && reserved_rgn->contains_region(rec),
148 "Sanity check");
149
150 // thread's native stack is always marked as "committed", ignore
151 // the "commit" operation for creating stack guard pages
152 if (FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack &&
153 FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) {
154 return true;
155 }
156
157 // if the reserved region has any committed regions
158 VMMemRegion* committed_rgn = (VMMemRegion*)next();
159 while (committed_rgn != NULL && committed_rgn->is_committed_region()) {
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106 }
107 return insert(&new_rec);
108 }
109
110 bool VMMemPointerIterator::insert_record_after(MemPointerRecord* rec) {
111 VMMemRegionEx new_rec;
112 assert(rec->is_allocation_record() || rec->is_commit_record(),
113 "Sanity check");
114 if (MemTracker::track_callsite()) {
115 new_rec.init((MemPointerRecordEx*)rec);
116 } else {
117 new_rec.init(rec);
118 }
119 return insert_after(&new_rec);
120 }
121
122 // we don't consolidate reserved regions, since they may be categorized
123 // in different types.
124 bool VMMemPointerIterator::add_reserved_region(MemPointerRecord* rec) {
125 assert(rec->is_allocation_record(), "Sanity check");
126 VMMemRegion* reserved_rgn = (VMMemRegion*)current();
127
128 // we don't have anything yet
129 if (reserved_rgn == NULL) {
130 return insert_record(rec);
131 }
132
133 assert(reserved_rgn->is_reserved_region(), "Sanity check");
134 // duplicated records
135 if (reserved_rgn->is_same_region(rec)) {
136 return true;
137 }
138 // an attached JNI thread can exit without detaching the thread, that results
139 // JVM to leak JavaThread object (JDK-8001743)
140 if (CheckJNICalls) {
141 guarantee(FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) != mtThreadStack ||
142 !reserved_rgn->overlaps_region(rec),
143 "Attached JNI thread exited without being detached");
144 }
145 // otherwise, we should not have overlapping reserved regions
146 assert(FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack ||
147 reserved_rgn->base() > rec->addr(), "Just check: locate()");
148 assert(FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack ||
149 !reserved_rgn->overlaps_region(rec), "overlapping reserved regions");
150
151 return insert_record(rec);
152 }
153
154 // we do consolidate committed regions
155 bool VMMemPointerIterator::add_committed_region(MemPointerRecord* rec) {
156 assert(rec->is_commit_record(), "Sanity check");
157 VMMemRegion* reserved_rgn = (VMMemRegion*)current();
158 assert(reserved_rgn->is_reserved_region() && reserved_rgn->contains_region(rec),
159 "Sanity check");
160
161 // thread's native stack is always marked as "committed", ignore
162 // the "commit" operation for creating stack guard pages
163 if (FLAGS_TO_MEMORY_TYPE(reserved_rgn->flags()) == mtThreadStack &&
164 FLAGS_TO_MEMORY_TYPE(rec->flags()) != mtThreadStack) {
165 return true;
166 }
167
168 // if the reserved region has any committed regions
169 VMMemRegion* committed_rgn = (VMMemRegion*)next();
170 while (committed_rgn != NULL && committed_rgn->is_committed_region()) {
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