138
139 #ifndef SUPPORTS_NATIVE_CX8
140 Mutex* UnsafeJlong_lock = NULL;
141 #endif
142
143 #define MAX_NUM_MUTEX 128
144 static Monitor * _mutex_array[MAX_NUM_MUTEX];
145 static int _num_mutex;
146
147 #ifdef ASSERT
148 void assert_locked_or_safepoint(const Monitor * lock) {
149 // check if this thread owns the lock (common case)
150 if (IgnoreLockingAssertions) return;
151 assert(lock != NULL, "Need non-NULL lock");
152 if (lock->owned_by_self()) return;
153 if (SafepointSynchronize::is_at_safepoint()) return;
154 if (!Universe::is_fully_initialized()) return;
155 // see if invoker of VM operation owns it
156 VM_Operation* op = VMThread::vm_operation();
157 if (op != NULL && op->calling_thread() == lock->owner()) return;
158 fatal(err_msg("must own lock %s", lock->name()));
159 }
160
161 // a stronger assertion than the above
162 void assert_lock_strong(const Monitor * lock) {
163 if (IgnoreLockingAssertions) return;
164 assert(lock != NULL, "Need non-NULL lock");
165 if (lock->owned_by_self()) return;
166 fatal(err_msg("must own lock %s", lock->name()));
167 }
168 #endif
169
170 #define def(var, type, pri, vm_block, safepoint_check_allowed ) { \
171 var = new type(Mutex::pri, #var, vm_block, safepoint_check_allowed); \
172 assert(_num_mutex < MAX_NUM_MUTEX, "increase MAX_NUM_MUTEX"); \
173 _mutex_array[_num_mutex++] = var; \
174 }
175
176 void mutex_init() {
177 def(tty_lock , Mutex , event, true, Monitor::_safepoint_check_never); // allow to lock in VM
178
179 def(CGC_lock , Monitor, special, true, Monitor::_safepoint_check_never); // coordinate between fore- and background GC
180 def(STS_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
181
182 if (UseConcMarkSweepGC || UseG1GC) {
183 def(FullGCCount_lock , Monitor, leaf, true, Monitor::_safepoint_check_never); // in support of ExplicitGCInvokesConcurrent
184 }
185 if (UseG1GC) {
186
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138
139 #ifndef SUPPORTS_NATIVE_CX8
140 Mutex* UnsafeJlong_lock = NULL;
141 #endif
142
143 #define MAX_NUM_MUTEX 128
144 static Monitor * _mutex_array[MAX_NUM_MUTEX];
145 static int _num_mutex;
146
147 #ifdef ASSERT
148 void assert_locked_or_safepoint(const Monitor * lock) {
149 // check if this thread owns the lock (common case)
150 if (IgnoreLockingAssertions) return;
151 assert(lock != NULL, "Need non-NULL lock");
152 if (lock->owned_by_self()) return;
153 if (SafepointSynchronize::is_at_safepoint()) return;
154 if (!Universe::is_fully_initialized()) return;
155 // see if invoker of VM operation owns it
156 VM_Operation* op = VMThread::vm_operation();
157 if (op != NULL && op->calling_thread() == lock->owner()) return;
158 fatal("must own lock %s", lock->name());
159 }
160
161 // a stronger assertion than the above
162 void assert_lock_strong(const Monitor * lock) {
163 if (IgnoreLockingAssertions) return;
164 assert(lock != NULL, "Need non-NULL lock");
165 if (lock->owned_by_self()) return;
166 fatal("must own lock %s", lock->name());
167 }
168 #endif
169
170 #define def(var, type, pri, vm_block, safepoint_check_allowed ) { \
171 var = new type(Mutex::pri, #var, vm_block, safepoint_check_allowed); \
172 assert(_num_mutex < MAX_NUM_MUTEX, "increase MAX_NUM_MUTEX"); \
173 _mutex_array[_num_mutex++] = var; \
174 }
175
176 void mutex_init() {
177 def(tty_lock , Mutex , event, true, Monitor::_safepoint_check_never); // allow to lock in VM
178
179 def(CGC_lock , Monitor, special, true, Monitor::_safepoint_check_never); // coordinate between fore- and background GC
180 def(STS_lock , Monitor, leaf, true, Monitor::_safepoint_check_never);
181
182 if (UseConcMarkSweepGC || UseG1GC) {
183 def(FullGCCount_lock , Monitor, leaf, true, Monitor::_safepoint_check_never); // in support of ExplicitGCInvokesConcurrent
184 }
185 if (UseG1GC) {
186
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