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8012547: Code cache flushing can get stuck reclaming of memory

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Keep sweeping regardless of if we are flushing

Reviewed-by: kvn, twisti
This commit is contained in:
Nils Eliasson 2013-04-29 13:20:19 +02:00
parent ffaac42580
commit dedfcd5aa4
7 changed files with 122 additions and 126 deletions
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13
hotspot/src/share/vm/code/codeCache.cpp
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@ -463,8 +463,10 @@ void CodeCache::verify_perm_nmethods(CodeBlobClosure* f_or_null) {
}
#endif //PRODUCT
nmethod* CodeCache::find_and_remove_saved_code(Method* m) {
/**
* Remove and return nmethod from the saved code list in order to reanimate it.
*/
nmethod* CodeCache::reanimate_saved_code(Method* m) {
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
nmethod* saved = _saved_nmethods;
nmethod* prev = NULL;
@ -479,7 +481,7 @@ nmethod* CodeCache::find_and_remove_saved_code(Method* m) {
saved->set_speculatively_disconnected(false);
saved->set_saved_nmethod_link(NULL);
if (PrintMethodFlushing) {
saved->print_on(tty, " ### nmethod is reconnected\n");
saved->print_on(tty, " ### nmethod is reconnected");
}
if (LogCompilation && (xtty != NULL)) {
ttyLocker ttyl;
@ -496,6 +498,9 @@ nmethod* CodeCache::find_and_remove_saved_code(Method* m) {
return NULL;
}
/**
* Remove nmethod from the saved code list in order to discard it permanently
*/
void CodeCache::remove_saved_code(nmethod* nm) {
// For conc swpr this will be called with CodeCache_lock taken by caller
assert_locked_or_safepoint(CodeCache_lock);
@ -529,7 +534,7 @@ void CodeCache::speculatively_disconnect(nmethod* nm) {
nm->set_saved_nmethod_link(_saved_nmethods);
_saved_nmethods = nm;
if (PrintMethodFlushing) {
nm->print_on(tty, " ### nmethod is speculatively disconnected\n");
nm->print_on(tty, " ### nmethod is speculatively disconnected");
}
if (LogCompilation && (xtty != NULL)) {
ttyLocker ttyl;