238
239 // Point to the last handle mark
240 HandleMark* _last_handle_mark;
241
242 // The parity of the last strong_roots iteration in which this thread was
243 // claimed as a task.
244 jint _oops_do_parity;
245
246 public:
247 void set_last_handle_mark(HandleMark* mark) { _last_handle_mark = mark; }
248 HandleMark* last_handle_mark() const { return _last_handle_mark; }
249 private:
250
251 // debug support for checking if code does allow safepoints or not
252 // GC points in the VM can happen because of allocation, invoking a VM operation, or blocking on
253 // mutex, or blocking on an object synchronizer (Java locking).
254 // If !allow_safepoint(), then an assertion failure will happen in any of the above cases
255 // If !allow_allocation(), then an assertion failure will happen during allocation
256 // (Hence, !allow_safepoint() => !allow_allocation()).
257 //
258 // The two classes No_Safepoint_Verifier and No_Allocation_Verifier are used to set these counters.
259 //
260 NOT_PRODUCT(int _allow_safepoint_count;) // If 0, thread allow a safepoint to happen
261 debug_only(int _allow_allocation_count;) // If 0, the thread is allowed to allocate oops.
262
263 // Used by SkipGCALot class.
264 NOT_PRODUCT(bool _skip_gcalot;) // Should we elide gc-a-lot?
265
266 friend class No_Alloc_Verifier;
267 friend class No_Safepoint_Verifier;
268 friend class Pause_No_Safepoint_Verifier;
269 friend class GC_locker;
270
271 ThreadLocalAllocBuffer _tlab; // Thread-local eden
272 jlong _allocated_bytes; // Cumulative number of bytes allocated on
273 // the Java heap
274
275 mutable TRACE_DATA _trace_data; // Thread-local data for tracing
276
277 ThreadExt _ext;
278
279 int _vm_operation_started_count; // VM_Operation support
280 int _vm_operation_completed_count; // VM_Operation support
281
282 ObjectMonitor* _current_pending_monitor; // ObjectMonitor this thread
283 // is waiting to lock
284 bool _current_pending_monitor_is_from_java; // locking is from Java code
285
286 // ObjectMonitor on which this thread called Object.wait()
287 ObjectMonitor* _current_waiting_monitor;
288
289 // Private thread-local objectmonitor list - a simple cache organized as a SLL.
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238
239 // Point to the last handle mark
240 HandleMark* _last_handle_mark;
241
242 // The parity of the last strong_roots iteration in which this thread was
243 // claimed as a task.
244 jint _oops_do_parity;
245
246 public:
247 void set_last_handle_mark(HandleMark* mark) { _last_handle_mark = mark; }
248 HandleMark* last_handle_mark() const { return _last_handle_mark; }
249 private:
250
251 // debug support for checking if code does allow safepoints or not
252 // GC points in the VM can happen because of allocation, invoking a VM operation, or blocking on
253 // mutex, or blocking on an object synchronizer (Java locking).
254 // If !allow_safepoint(), then an assertion failure will happen in any of the above cases
255 // If !allow_allocation(), then an assertion failure will happen during allocation
256 // (Hence, !allow_safepoint() => !allow_allocation()).
257 //
258 // The two classes NoSafepointVerifier and No_Allocation_Verifier are used to set these counters.
259 //
260 NOT_PRODUCT(int _allow_safepoint_count;) // If 0, thread allow a safepoint to happen
261 debug_only(int _allow_allocation_count;) // If 0, the thread is allowed to allocate oops.
262
263 // Used by SkipGCALot class.
264 NOT_PRODUCT(bool _skip_gcalot;) // Should we elide gc-a-lot?
265
266 friend class NoAllocVerifier;
267 friend class NoSafepointVerifier;
268 friend class PauseNoSafepointVerifier;
269 friend class GCLocker;
270
271 ThreadLocalAllocBuffer _tlab; // Thread-local eden
272 jlong _allocated_bytes; // Cumulative number of bytes allocated on
273 // the Java heap
274
275 mutable TRACE_DATA _trace_data; // Thread-local data for tracing
276
277 ThreadExt _ext;
278
279 int _vm_operation_started_count; // VM_Operation support
280 int _vm_operation_completed_count; // VM_Operation support
281
282 ObjectMonitor* _current_pending_monitor; // ObjectMonitor this thread
283 // is waiting to lock
284 bool _current_pending_monitor_is_from_java; // locking is from Java code
285
286 // ObjectMonitor on which this thread called Object.wait()
287 ObjectMonitor* _current_waiting_monitor;
288
289 // Private thread-local objectmonitor list - a simple cache organized as a SLL.
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