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6863023: need non-perm oops in code cache for JSR 292

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Make a special root-list for those few nmethods which might contain non-perm oops.

Reviewed-by: twisti, kvn, never, jmasa, ysr
This commit is contained in:
John R Rose 2009-09-15 21:53:47 -07:00
parent 1cf5b7ae11
commit e261aecad8
74 changed files with 979 additions and 279 deletions
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12
hotspot/src/share/vm/oops/instanceKlass.cpp
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@ -2025,7 +2025,7 @@ void instanceKlass::add_osr_nmethod(nmethod* n) {
// This is a short non-blocking critical region, so the no safepoint check is ok.
OsrList_lock->lock_without_safepoint_check();
assert(n->is_osr_method(), "wrong kind of nmethod");
n->set_link(osr_nmethods_head());
n->set_osr_link(osr_nmethods_head());
set_osr_nmethods_head(n);
// Remember to unlock again
OsrList_lock->unlock();
@ -2041,17 +2041,17 @@ void instanceKlass::remove_osr_nmethod(nmethod* n) {
// Search for match
while(cur != NULL && cur != n) {
last = cur;
cur = cur->link();
cur = cur->osr_link();
}
if (cur == n) {
if (last == NULL) {
// Remove first element
set_osr_nmethods_head(osr_nmethods_head()->link());
set_osr_nmethods_head(osr_nmethods_head()->osr_link());
} else {
last->set_link(cur->link());
last->set_osr_link(cur->osr_link());
}
}
n->set_link(NULL);
n->set_osr_link(NULL);
// Remember to unlock again
OsrList_lock->unlock();
}
@ -2068,7 +2068,7 @@ nmethod* instanceKlass::lookup_osr_nmethod(const methodOop m, int bci) const {
OsrList_lock->unlock();
return osr;
}
osr = osr->link();
osr = osr->osr_link();
}
OsrList_lock->unlock();
return NULL;