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1 /* |
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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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. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "code/nmethod.hpp" |
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27 #include "gc/g1/g1CodeBlobClosure.hpp" |
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28 #include "gc/g1/g1CollectedHeap.inline.hpp" |
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29 #include "gc/g1/heapRegion.hpp" |
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30 #include "gc/g1/heapRegionRemSet.hpp" |
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31 #include "oops/oop.inline.hpp" |
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32 |
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33 template <typename T> |
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34 void G1CodeBlobClosure::HeapRegionGatheringOopClosure::do_oop_work(T* p) { |
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35 _work->do_oop(p); |
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36 T oop_or_narrowoop = oopDesc::load_heap_oop(p); |
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37 if (!oopDesc::is_null(oop_or_narrowoop)) { |
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38 oop o = oopDesc::decode_heap_oop_not_null(oop_or_narrowoop); |
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39 HeapRegion* hr = _g1h->heap_region_containing_raw(o); |
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40 assert(!_g1h->obj_in_cs(o) || hr->rem_set()->strong_code_roots_list_contains(_nm), "if o still in collection set then evacuation failed and nm must already be in the remset"); |
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41 hr->add_strong_code_root(_nm); |
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42 } |
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43 } |
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44 |
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45 void G1CodeBlobClosure::HeapRegionGatheringOopClosure::do_oop(oop* o) { |
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46 do_oop_work(o); |
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47 } |
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48 |
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49 void G1CodeBlobClosure::HeapRegionGatheringOopClosure::do_oop(narrowOop* o) { |
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50 do_oop_work(o); |
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51 } |
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52 |
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53 void G1CodeBlobClosure::do_code_blob(CodeBlob* cb) { |
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54 nmethod* nm = cb->as_nmethod_or_null(); |
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55 if (nm != NULL) { |
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56 if (!nm->test_set_oops_do_mark()) { |
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57 _oc.set_nm(nm); |
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58 nm->oops_do(&_oc); |
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59 nm->fix_oop_relocations(); |
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60 } |
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61 } |
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62 } |
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63 |