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7041789: 30% perf regression with c2/arm following 7017732

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Implement a more accurate is_scavengable()

Reviewed-by: stefank, jcoomes, ysr
This commit is contained in:
Jon Masamitsu 2011-05-03 10:30:34 -07:00
parent 8cdd97938c
commit 6819e3739e
12 changed files with 132 additions and 36 deletions
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6
hotspot/src/share/vm/code/nmethod.cpp
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@ -1810,7 +1810,7 @@ public:
void maybe_print(oop* p) {
if (_print_nm == NULL) return;
if (!_detected_scavenge_root) _print_nm->print_on(tty, "new scavenge root");
tty->print_cr(""PTR_FORMAT"[offset=%d] detected non-perm oop "PTR_FORMAT" (found at "PTR_FORMAT")",
tty->print_cr(""PTR_FORMAT"[offset=%d] detected scavengable oop "PTR_FORMAT" (found at "PTR_FORMAT")",
_print_nm, (int)((intptr_t)p - (intptr_t)_print_nm),
(intptr_t)(*p), (intptr_t)p);
(*p)->print();
@ -2311,7 +2311,7 @@ public:
_nm->print_nmethod(true);
_ok = false;
}
tty->print_cr("*** non-perm oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)",
tty->print_cr("*** scavengable oop "PTR_FORMAT" found at "PTR_FORMAT" (offset %d)",
(intptr_t)(*p), (intptr_t)p, (int)((intptr_t)p - (intptr_t)_nm));
(*p)->print();
}
@ -2324,7 +2324,7 @@ void nmethod::verify_scavenge_root_oops() {
DebugScavengeRoot debug_scavenge_root(this);
oops_do(&debug_scavenge_root);
if (!debug_scavenge_root.ok())
fatal("found an unadvertised bad non-perm oop in the code cache");
fatal("found an unadvertised bad scavengable oop in the code cache");
}
assert(scavenge_root_not_marked(), "");
}