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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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39
hotspot/src/share/vm/memory/iterator.cpp
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@ -32,3 +32,42 @@ void ObjectToOopClosure::do_object(oop obj) {
void VoidClosure::do_void() {
ShouldNotCallThis();
}
MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
: _active(activate)
{
if (_active) nmethod::oops_do_marking_prologue();
}
MarkingCodeBlobClosure::MarkScope::~MarkScope() {
if (_active) nmethod::oops_do_marking_epilogue();
}
void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
if (!cb->is_nmethod()) return;
nmethod* nm = (nmethod*) cb;
if (!nm->test_set_oops_do_mark()) {
NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n"));
do_newly_marked_nmethod(nm);
} else {
NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
}
}
void CodeBlobToOopClosure::do_newly_marked_nmethod(CodeBlob* cb) {
cb->oops_do(_cl);
}
void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
if (!_do_marking) {
NOT_PRODUCT(if (TraceScavenge && Verbose && cb->is_nmethod()) ((nmethod*)cb)->print_on(tty, "oops_do, unmarked visit\n"));
// This assert won't work, since there are lots of mini-passes
// (mostly in debug mode) that co-exist with marking phases.
//assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
cb->oops_do(_cl);
} else {
MarkingCodeBlobClosure::do_code_blob(cb);
}
}