Mercurial > hg > truffle
annotate src/share/vm/memory/iterator.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children | ec98e58952b2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "memory/iterator.hpp" | |
| 27 #include "oops/oop.inline.hpp" | |
| 0 | 28 |
| 29 void ObjectToOopClosure::do_object(oop obj) { | |
| 30 obj->oop_iterate(_cl); | |
| 31 } | |
| 32 | |
| 33 void VoidClosure::do_void() { | |
| 34 ShouldNotCallThis(); | |
| 35 } | |
| 935 | 36 |
| 989 | 37 MarkingCodeBlobClosure::MarkScope::MarkScope(bool activate) |
| 38 : _active(activate) | |
| 39 { | |
| 40 if (_active) nmethod::oops_do_marking_prologue(); | |
| 41 } | |
| 42 | |
| 43 MarkingCodeBlobClosure::MarkScope::~MarkScope() { | |
| 44 if (_active) nmethod::oops_do_marking_epilogue(); | |
| 45 } | |
| 46 | |
| 47 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) { | |
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48 nmethod* nm = cb->as_nmethod_or_null(); |
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49 if (nm == NULL) return; |
| 989 | 50 if (!nm->test_set_oops_do_mark()) { |
| 51 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, 1st visit\n")); | |
| 52 do_newly_marked_nmethod(nm); | |
| 53 } else { | |
| 54 NOT_PRODUCT(if (TraceScavenge) nm->print_on(tty, "oops_do, skipped on 2nd visit\n")); | |
| 55 } | |
| 56 } | |
| 57 | |
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58 void CodeBlobToOopClosure::do_newly_marked_nmethod(nmethod* nm) { |
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59 nm->oops_do(_cl, /*do_strong_roots_only=*/ true); |
| 989 | 60 } |
| 61 | |
| 62 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) { | |
| 63 if (!_do_marking) { | |
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64 nmethod* nm = cb->as_nmethod_or_null(); |
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65 NOT_PRODUCT(if (TraceScavenge && Verbose && nm != NULL) nm->print_on(tty, "oops_do, unmarked visit\n")); |
| 989 | 66 // This assert won't work, since there are lots of mini-passes |
| 67 // (mostly in debug mode) that co-exist with marking phases. | |
| 68 //assert(!(cb->is_nmethod() && ((nmethod*)cb)->test_oops_do_mark()), "found marked nmethod during mark-free phase"); | |
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69 if (nm != NULL) { |
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70 nm->oops_do(_cl); |
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71 } |
| 989 | 72 } else { |
| 73 MarkingCodeBlobClosure::do_code_blob(cb); | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 |