490 }
491 }
492 };
493
494 void StringTable::clean_dead_entries(JavaThread* jt) {
495 StringTableHash::BulkDeleteTask bdt(_local_table);
496 if (!bdt.prepare(jt)) {
497 return;
498 }
499
500 StringTableDeleteCheck stdc;
501 StringTableDoDelete stdd;
502 bool interrupted = false;
503 {
504 TraceTime timer("Clean", TRACETIME_LOG(Debug, stringtable, perf));
505 while(bdt.do_task(jt, stdc, stdd)) {
506 bdt.pause(jt);
507 {
508 ThreadBlockInVM tbivm(jt);
509 }
510 if (!bdt.cont(jt)) {
511 interrupted = true;
512 break;
513 }
514 }
515 }
516 if (interrupted) {
517 _has_work = true;
518 } else {
519 bdt.done(jt);
520 }
521 log_debug(stringtable)("Cleaned %ld of %ld", stdc._count, stdc._item);
522 }
523
524 void StringTable::check_concurrent_work() {
525 if (_has_work) {
526 return;
527 }
528
529 double load_factor = StringTable::get_load_factor();
530 double dead_factor = StringTable::get_dead_factor();
531 // We should clean/resize if we have more dead than alive,
532 // more items than preferred load factor or
533 // more dead items than water mark.
534 if ((dead_factor > load_factor) ||
535 (load_factor > PREF_AVG_LIST_LEN) ||
536 (dead_factor > CLEAN_DEAD_HIGH_WATER_MARK)) {
537 log_debug(stringtable)("Concurrent work triggered, live factor:%g dead factor:%g",
538 load_factor, dead_factor);
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490 }
491 }
492 };
493
494 void StringTable::clean_dead_entries(JavaThread* jt) {
495 StringTableHash::BulkDeleteTask bdt(_local_table);
496 if (!bdt.prepare(jt)) {
497 return;
498 }
499
500 StringTableDeleteCheck stdc;
501 StringTableDoDelete stdd;
502 bool interrupted = false;
503 {
504 TraceTime timer("Clean", TRACETIME_LOG(Debug, stringtable, perf));
505 while(bdt.do_task(jt, stdc, stdd)) {
506 bdt.pause(jt);
507 {
508 ThreadBlockInVM tbivm(jt);
509 }
510 bdt.cont(jt);
511 }
512 bdt.done(jt);
513 }
514 log_debug(stringtable)("Cleaned %ld of %ld", stdc._count, stdc._item);
515 }
516
517 void StringTable::check_concurrent_work() {
518 if (_has_work) {
519 return;
520 }
521
522 double load_factor = StringTable::get_load_factor();
523 double dead_factor = StringTable::get_dead_factor();
524 // We should clean/resize if we have more dead than alive,
525 // more items than preferred load factor or
526 // more dead items than water mark.
527 if ((dead_factor > load_factor) ||
528 (load_factor > PREF_AVG_LIST_LEN) ||
529 (dead_factor > CLEAN_DEAD_HIGH_WATER_MARK)) {
530 log_debug(stringtable)("Concurrent work triggered, live factor:%g dead factor:%g",
531 load_factor, dead_factor);
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