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comparison src/share/vm/memory/iterator.cpp @ 989:148e5441d916

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6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr
author jrose
date Tue, 15 Sep 2009 21:53:47 -0700
parents a61af66fc99e
children 54b3b351d6f9
comparison
equal deleted inserted replaced
987:00977607da34 989:148e5441d916
30 } 30 }
31 31
32 void VoidClosure::do_void() { 32 void VoidClosure::do_void() {
33 ShouldNotCallThis(); 33 ShouldNotCallThis();
34 } 34 }
35
36 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate)
37 : _active(activate)
38 {
39 if (_active) nmethod::oops_do_marking_prologue();
40 }
41
42 MarkingCodeBlobClosure::MarkScope::~MarkScope() {
43 if (_active) nmethod::oops_do_marking_epilogue();
44 }
45
46 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
47 if (!cb->is_nmethod()) return;
48 nmethod* nm = (nmethod*) cb;
49 if (!nm->test_set_oops_do_mark()) {
50 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n"));
51 do_newly_marked_nmethod(nm);
52 } else {
53 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n"));
54 }
55 }
56
57 void CodeBlobToOopClosure::do_newly_marked_nmethod(CodeBlob* cb) {
58 cb->oops_do(_cl);
59 }
60
61 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
62 if (!_do_marking) {
63 NOT_PRODUCT(if (TraceScavenge && Verbose && cb->is_nmethod()) ((nmethod*)cb)->print_on(tty, "oops_do, unmarked visit\n"));
64 // This assert won't work, since there are lots of mini-passes
65 // (mostly in debug mode) that co-exist with marking phases.
66 //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase");
67 cb->oops_do(_cl);
68 } else {
69 MarkingCodeBlobClosure::do_code_blob(cb);
70 }
71 }
72
73