41 // The caller may block while communicating
42 // with the SLT thread in order to acquire/release the PLL.
43 SurrogateLockerThread* slt = ConcurrentMarkSweepThread::slt();
44 if (slt != NULL) {
45 slt->manipulatePLL(SurrogateLockerThread::acquirePLL);
46 } else {
47 SurrogateLockerThread::report_missing_slt();
48 }
49 }
50
51 void VM_CMS_Operation::release_and_notify_pending_list_lock() {
52 // The caller may block while communicating
53 // with the SLT thread in order to acquire/release the PLL.
54 ConcurrentMarkSweepThread::slt()->
55 manipulatePLL(SurrogateLockerThread::releaseAndNotifyPLL);
56 }
57
58 void VM_CMS_Operation::verify_before_gc() {
59 if (VerifyBeforeGC &&
60 GenCollectedHeap::heap()->total_collections() >= VerifyGCStartAt) {
61 GCTraceTime tm("Verify Before", false, false, _collector->_gc_timer_cm);
62 HandleMark hm;
63 FreelistLocker x(_collector);
64 MutexLockerEx y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
65 GenCollectedHeap::heap()->prepare_for_verify();
66 Universe::verify();
67 }
68 }
69
70 void VM_CMS_Operation::verify_after_gc() {
71 if (VerifyAfterGC &&
72 GenCollectedHeap::heap()->total_collections() >= VerifyGCStartAt) {
73 GCTraceTime tm("Verify After", false, false, _collector->_gc_timer_cm);
74 HandleMark hm;
75 FreelistLocker x(_collector);
76 MutexLockerEx y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
77 Universe::verify();
78 }
79 }
80
81 bool VM_CMS_Operation::lost_race() const {
82 if (CMSCollector::abstract_state() == CMSCollector::Idling) {
83 // We lost a race to a foreground collection
84 // -- there's nothing to do
85 return true;
86 }
87 assert(CMSCollector::abstract_state() == legal_state(),
88 "Inconsistent collector state?");
89 return false;
90 }
91
92 bool VM_CMS_Operation::doit_prologue() {
93 assert(Thread::current()->is_ConcurrentGC_thread(), "just checking");
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41 // The caller may block while communicating
42 // with the SLT thread in order to acquire/release the PLL.
43 SurrogateLockerThread* slt = ConcurrentMarkSweepThread::slt();
44 if (slt != NULL) {
45 slt->manipulatePLL(SurrogateLockerThread::acquirePLL);
46 } else {
47 SurrogateLockerThread::report_missing_slt();
48 }
49 }
50
51 void VM_CMS_Operation::release_and_notify_pending_list_lock() {
52 // The caller may block while communicating
53 // with the SLT thread in order to acquire/release the PLL.
54 ConcurrentMarkSweepThread::slt()->
55 manipulatePLL(SurrogateLockerThread::releaseAndNotifyPLL);
56 }
57
58 void VM_CMS_Operation::verify_before_gc() {
59 if (VerifyBeforeGC &&
60 GenCollectedHeap::heap()->total_collections() >= VerifyGCStartAt) {
61 GCTraceTime(Info, gc, verify) tm("Verify Before", _collector->_gc_timer_cm);
62 HandleMark hm;
63 FreelistLocker x(_collector);
64 MutexLockerEx y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
65 GenCollectedHeap::heap()->prepare_for_verify();
66 Universe::verify();
67 }
68 }
69
70 void VM_CMS_Operation::verify_after_gc() {
71 if (VerifyAfterGC &&
72 GenCollectedHeap::heap()->total_collections() >= VerifyGCStartAt) {
73 GCTraceTime(Info, gc, verify) tm("Verify After", _collector->_gc_timer_cm);
74 HandleMark hm;
75 FreelistLocker x(_collector);
76 MutexLockerEx y(_collector->bitMapLock(), Mutex::_no_safepoint_check_flag);
77 Universe::verify();
78 }
79 }
80
81 bool VM_CMS_Operation::lost_race() const {
82 if (CMSCollector::abstract_state() == CMSCollector::Idling) {
83 // We lost a race to a foreground collection
84 // -- there's nothing to do
85 return true;
86 }
87 assert(CMSCollector::abstract_state() == legal_state(),
88 "Inconsistent collector state?");
89 return false;
90 }
91
92 bool VM_CMS_Operation::doit_prologue() {
93 assert(Thread::current()->is_ConcurrentGC_thread(), "just checking");
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