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comparison src/share/vm/code/codeCache.cpp @ 10206:0cfa93c2fcc4

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8012547: Code cache flushing can get stuck reclaming of memory Summary: Keep sweeping regardless of if we are flushing Reviewed-by: kvn, twisti
author neliasso
date Mon, 29 Apr 2013 13:20:19 +0200
parents a7fb14888912
children 91eba9f82325
comparison
equal deleted inserted replaced
10205:62b683108582 10206:0cfa93c2fcc4
461 if (call_f) f_or_null->do_code_blob(cb); 461 if (call_f) f_or_null->do_code_blob(cb);
462 } 462 }
463 } 463 }
464 #endif //PRODUCT 464 #endif //PRODUCT
465 465
466 466 /**
467 nmethod* CodeCache::find_and_remove_saved_code(Method* m) { 467 * Remove and return nmethod from the saved code list in order to reanimate it.
468 */
469 nmethod* CodeCache::reanimate_saved_code(Method* m) {
468 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 470 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
469 nmethod* saved = _saved_nmethods; 471 nmethod* saved = _saved_nmethods;
470 nmethod* prev = NULL; 472 nmethod* prev = NULL;
471 while (saved != NULL) { 473 while (saved != NULL) {
472 if (saved->is_in_use() && saved->method() == m) { 474 if (saved->is_in_use() && saved->method() == m) {
477 } 479 }
478 assert(saved->is_speculatively_disconnected(), "shouldn't call for other nmethods"); 480 assert(saved->is_speculatively_disconnected(), "shouldn't call for other nmethods");
479 saved->set_speculatively_disconnected(false); 481 saved->set_speculatively_disconnected(false);
480 saved->set_saved_nmethod_link(NULL); 482 saved->set_saved_nmethod_link(NULL);
481 if (PrintMethodFlushing) { 483 if (PrintMethodFlushing) {
482 saved->print_on(tty, " ### nmethod is reconnected\n"); 484 saved->print_on(tty, " ### nmethod is reconnected");
483 } 485 }
484 if (LogCompilation && (xtty != NULL)) { 486 if (LogCompilation && (xtty != NULL)) {
485 ttyLocker ttyl; 487 ttyLocker ttyl;
486 xtty->begin_elem("nmethod_reconnected compile_id='%3d'", saved->compile_id()); 488 xtty->begin_elem("nmethod_reconnected compile_id='%3d'", saved->compile_id());
487 xtty->method(m); 489 xtty->method(m);
494 saved = saved->saved_nmethod_link(); 496 saved = saved->saved_nmethod_link();
495 } 497 }
496 return NULL; 498 return NULL;
497 } 499 }
498 500
501 /**
502 * Remove nmethod from the saved code list in order to discard it permanently
503 */
499 void CodeCache::remove_saved_code(nmethod* nm) { 504 void CodeCache::remove_saved_code(nmethod* nm) {
500 // For conc swpr this will be called with CodeCache_lock taken by caller 505 // For conc swpr this will be called with CodeCache_lock taken by caller
501 assert_locked_or_safepoint(CodeCache_lock); 506 assert_locked_or_safepoint(CodeCache_lock);
502 assert(nm->is_speculatively_disconnected(), "shouldn't call for other nmethods"); 507 assert(nm->is_speculatively_disconnected(), "shouldn't call for other nmethods");
503 nmethod* saved = _saved_nmethods; 508 nmethod* saved = _saved_nmethods;
527 assert_locked_or_safepoint(CodeCache_lock); 532 assert_locked_or_safepoint(CodeCache_lock);
528 assert(nm->is_in_use() && !nm->is_speculatively_disconnected(), "should only disconnect live nmethods"); 533 assert(nm->is_in_use() && !nm->is_speculatively_disconnected(), "should only disconnect live nmethods");
529 nm->set_saved_nmethod_link(_saved_nmethods); 534 nm->set_saved_nmethod_link(_saved_nmethods);
530 _saved_nmethods = nm; 535 _saved_nmethods = nm;
531 if (PrintMethodFlushing) { 536 if (PrintMethodFlushing) {
532 nm->print_on(tty, " ### nmethod is speculatively disconnected\n"); 537 nm->print_on(tty, " ### nmethod is speculatively disconnected");
533 } 538 }
534 if (LogCompilation && (xtty != NULL)) { 539 if (LogCompilation && (xtty != NULL)) {
535 ttyLocker ttyl; 540 ttyLocker ttyl;
536 xtty->begin_elem("nmethod_disconnected compile_id='%3d'", nm->compile_id()); 541 xtty->begin_elem("nmethod_disconnected compile_id='%3d'", nm->compile_id());
537 xtty->method(nm->method()); 542 xtty->method(nm->method());