117 }
118 } else {
119 _is_nmt_env_valid = false;
120 }
121
122 return true;
123 }
124
125 bool MemTracker::verify_nmt_option() {
126 return _is_nmt_env_valid;
127 }
128
129 void* MemTracker::malloc_base(void* memblock) {
130 return MallocTracker::get_base(memblock);
131 }
132
133 void Tracker::record(address addr, size_t size) {
134 if (MemTracker::tracking_level() < NMT_summary) return;
135 switch(_type) {
136 case uncommit:
137 VirtualMemoryTracker::remove_uncommitted_region(addr, size);
138 break;
139 case release:
140 VirtualMemoryTracker::remove_released_region(addr, size);
141 break;
142 default:
143 ShouldNotReachHere();
144 }
145 }
146
147
148 // Shutdown can only be issued via JCmd, and NMT JCmd is serialized by lock
149 void MemTracker::shutdown() {
150 // We can only shutdown NMT to minimal tracking level if it is ever on.
151 if (tracking_level() > NMT_minimal) {
152 transition_to(NMT_minimal);
153 }
154 }
155
156 bool MemTracker::transition_to(NMT_TrackingLevel level) {
157 NMT_TrackingLevel current_level = tracking_level();
158
159 assert(level != NMT_off || current_level == NMT_off, "Cannot transition NMT to off");
160
161 if (current_level == level) {
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117 }
118 } else {
119 _is_nmt_env_valid = false;
120 }
121
122 return true;
123 }
124
125 bool MemTracker::verify_nmt_option() {
126 return _is_nmt_env_valid;
127 }
128
129 void* MemTracker::malloc_base(void* memblock) {
130 return MallocTracker::get_base(memblock);
131 }
132
133 void Tracker::record(address addr, size_t size) {
134 if (MemTracker::tracking_level() < NMT_summary) return;
135 switch(_type) {
136 case uncommit:
137 {
138 ThreadCritical tc;
139 VirtualMemoryTracker::remove_uncommitted_region(addr, size);
140 break;
141 }
142 case release:
143 {
144 ThreadCritical tc;
145 VirtualMemoryTracker::remove_released_region(addr, size);
146 break;
147 }
148 default:
149 ShouldNotReachHere();
150 }
151 }
152
153
154 // Shutdown can only be issued via JCmd, and NMT JCmd is serialized by lock
155 void MemTracker::shutdown() {
156 // We can only shutdown NMT to minimal tracking level if it is ever on.
157 if (tracking_level() > NMT_minimal) {
158 transition_to(NMT_minimal);
159 }
160 }
161
162 bool MemTracker::transition_to(NMT_TrackingLevel level) {
163 NMT_TrackingLevel current_level = tracking_level();
164
165 assert(level != NMT_off || current_level == NMT_off, "Cannot transition NMT to off");
166
167 if (current_level == level) {
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