393 if (!scan_in_progress()) return false;
394
395 {
396 MutexLockerEx x(RootRegionScan_lock, Mutex::_no_safepoint_check_flag);
397 while (scan_in_progress()) {
398 RootRegionScan_lock->wait(Mutex::_no_safepoint_check_flag);
399 }
400 }
401 return true;
402 }
403
404 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
405 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
406 #endif // _MSC_VER
407
408 uint ConcurrentMark::scale_parallel_threads(uint n_par_threads) {
409 return MAX2((n_par_threads + 2) / 4, 1U);
410 }
411
412 ConcurrentMark::ConcurrentMark(ReservedSpace rs, uint max_regions) :
413 _markBitMap1(rs, MinObjAlignment - 1),
414 _markBitMap2(rs, MinObjAlignment - 1),
415
416 _parallel_marking_threads(0),
417 _max_parallel_marking_threads(0),
418 _sleep_factor(0.0),
419 _marking_task_overhead(1.0),
420 _cleanup_sleep_factor(0.0),
421 _cleanup_task_overhead(1.0),
422 _cleanup_list("Cleanup List"),
423 _region_bm((BitMap::idx_t) max_regions, false /* in_resource_area*/),
424 _card_bm((rs.size() + CardTableModRefBS::card_size - 1) >>
425 CardTableModRefBS::card_shift,
426 false /* in_resource_area*/),
427
428 _prevMarkBitMap(&_markBitMap1),
429 _nextMarkBitMap(&_markBitMap2),
430
431 _markStack(this),
432 // _finger set in set_non_marking_state
433
434 _max_task_num(MAX2((uint)ParallelGCThreads, 1U)),
435 // _active_tasks set in set_non_marking_state
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393 if (!scan_in_progress()) return false;
394
395 {
396 MutexLockerEx x(RootRegionScan_lock, Mutex::_no_safepoint_check_flag);
397 while (scan_in_progress()) {
398 RootRegionScan_lock->wait(Mutex::_no_safepoint_check_flag);
399 }
400 }
401 return true;
402 }
403
404 #ifdef _MSC_VER // the use of 'this' below gets a warning, make it go away
405 #pragma warning( disable:4355 ) // 'this' : used in base member initializer list
406 #endif // _MSC_VER
407
408 uint ConcurrentMark::scale_parallel_threads(uint n_par_threads) {
409 return MAX2((n_par_threads + 2) / 4, 1U);
410 }
411
412 ConcurrentMark::ConcurrentMark(ReservedSpace rs, uint max_regions) :
413 _markBitMap1(rs, log2_intptr(MinObjAlignment)),
414 _markBitMap2(rs, log2_intptr(MinObjAlignment)),
415 _parallel_marking_threads(0),
416 _max_parallel_marking_threads(0),
417 _sleep_factor(0.0),
418 _marking_task_overhead(1.0),
419 _cleanup_sleep_factor(0.0),
420 _cleanup_task_overhead(1.0),
421 _cleanup_list("Cleanup List"),
422 _region_bm((BitMap::idx_t) max_regions, false /* in_resource_area*/),
423 _card_bm((rs.size() + CardTableModRefBS::card_size - 1) >>
424 CardTableModRefBS::card_shift,
425 false /* in_resource_area*/),
426
427 _prevMarkBitMap(&_markBitMap1),
428 _nextMarkBitMap(&_markBitMap2),
429
430 _markStack(this),
431 // _finger set in set_non_marking_state
432
433 _max_task_num(MAX2((uint)ParallelGCThreads, 1U)),
434 // _active_tasks set in set_non_marking_state
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