225 if (UsePerfData) {
226 // jvmstat performance counters
227 Thread* THREAD = Thread::current();
228 _perf_accumulated_vm_operation_time =
229 PerfDataManager::create_counter(SUN_THREADS, "vmOperationTime",
230 PerfData::U_Ticks, CHECK);
231 }
232 }
233
234 VMThread::VMThread() : NamedThread() {
235 set_name("VM Thread");
236 }
237
238 void VMThread::destroy() {
239 _vm_thread = NULL; // VM thread is gone
240 }
241
242 void VMThread::run() {
243 assert(this == vm_thread(), "check");
244
245 this->initialize_named_thread();
246
247 // Notify_lock wait checks on active_handles() to rewait in
248 // case of spurious wakeup, it should wait on the last
249 // value set prior to the notify
250 this->set_active_handles(JNIHandleBlock::allocate_block());
251
252 {
253 MutexLocker ml(Notify_lock);
254 Notify_lock->notify();
255 }
256 // Notify_lock is destroyed by Threads::create_vm()
257
258 int prio = (VMThreadPriority == -1)
259 ? os::java_to_os_priority[NearMaxPriority]
260 : VMThreadPriority;
261 // Note that I cannot call os::set_priority because it expects Java
262 // priorities and I am *explicitly* using OS priorities so that it's
263 // possible to set the VM thread priority higher than any Java thread.
264 os::set_native_priority( this, prio );
265
266 // Wait for VM_Operations until termination
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225 if (UsePerfData) {
226 // jvmstat performance counters
227 Thread* THREAD = Thread::current();
228 _perf_accumulated_vm_operation_time =
229 PerfDataManager::create_counter(SUN_THREADS, "vmOperationTime",
230 PerfData::U_Ticks, CHECK);
231 }
232 }
233
234 VMThread::VMThread() : NamedThread() {
235 set_name("VM Thread");
236 }
237
238 void VMThread::destroy() {
239 _vm_thread = NULL; // VM thread is gone
240 }
241
242 void VMThread::run() {
243 assert(this == vm_thread(), "check");
244
245 // Notify_lock wait checks on active_handles() to rewait in
246 // case of spurious wakeup, it should wait on the last
247 // value set prior to the notify
248 this->set_active_handles(JNIHandleBlock::allocate_block());
249
250 {
251 MutexLocker ml(Notify_lock);
252 Notify_lock->notify();
253 }
254 // Notify_lock is destroyed by Threads::create_vm()
255
256 int prio = (VMThreadPriority == -1)
257 ? os::java_to_os_priority[NearMaxPriority]
258 : VMThreadPriority;
259 // Note that I cannot call os::set_priority because it expects Java
260 // priorities and I am *explicitly* using OS priorities so that it's
261 // possible to set the VM thread priority higher than any Java thread.
262 os::set_native_priority( this, prio );
263
264 // Wait for VM_Operations until termination
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