rev 11552 : imported patch 8159978-collection-set-as-array
rev 11553 : imported patch 8159978-erikh-review
1 /*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
26 #define SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
27
28 #include "gc/g1/heapRegionSet.hpp"
29 #include "memory/allocation.hpp"
30 #include "memory/universe.hpp"
31
32 class G1CollectedHeap;
33
34 class G1HeapVerifier : public CHeapObj<mtGC> {
35 private:
36 G1CollectedHeap* _g1h;
37
38 // verify_region_sets() performs verification over the region
39 // lists. It will be compiled in the product code to be used when
40 // necessary (i.e., during heap verification).
41 void verify_region_sets();
42
43 public:
44
45 G1HeapVerifier(G1CollectedHeap* heap) : _g1h(heap) { }
46
47 // Perform verification.
48
49 // vo == UsePrevMarking -> use "prev" marking information,
50 // vo == UseNextMarking -> use "next" marking information
51 // vo == UseMarkWord -> use the mark word in the object header
52 //
53 // NOTE: Only the "prev" marking information is guaranteed to be
54 // consistent most of the time, so most calls to this should use
55 // vo == UsePrevMarking.
56 // Currently, there is only one case where this is called with
57 // vo == UseNextMarking, which is to verify the "next" marking
58 // information at the end of remark.
59 // Currently there is only one place where this is called with
60 // vo == UseMarkWord, which is to verify the marking during a
61 // full GC.
62 void verify(VerifyOption vo);
63
64 // verify_region_sets_optional() is planted in the code for
65 // list verification in non-product builds (and it can be enabled in
66 // product builds by defining HEAP_REGION_SET_FORCE_VERIFY to be 1).
67 #if HEAP_REGION_SET_FORCE_VERIFY
68 void verify_region_sets_optional() {
69 verify_region_sets();
70 }
71 #else // HEAP_REGION_SET_FORCE_VERIFY
72 void verify_region_sets_optional() { }
73 #endif // HEAP_REGION_SET_FORCE_VERIFY
74
75 void prepare_for_verify();
76 double verify(bool guard, const char* msg);
77 void verify_before_gc();
78 void verify_after_gc();
79
80 #ifndef PRODUCT
81 // Make sure that the given bitmap has no marked objects in the
82 // range [from,limit). If it does, print an error message and return
83 // false. Otherwise, just return true. bitmap_name should be "prev"
84 // or "next".
85 bool verify_no_bits_over_tams(const char* bitmap_name, G1CMBitMapRO* bitmap,
86 HeapWord* from, HeapWord* limit);
87
88 // Verify that the prev / next bitmap range [tams,end) for the given
89 // region has no marks. Return true if all is well, false if errors
90 // are detected.
91 bool verify_bitmaps(const char* caller, HeapRegion* hr);
92 #endif // PRODUCT
93
94 // If G1VerifyBitmaps is set, verify that the marking bitmaps for
95 // the given region do not have any spurious marks. If errors are
96 // detected, print appropriate error messages and crash.
97 void check_bitmaps(const char* caller, HeapRegion* hr) PRODUCT_RETURN;
98
99 // If G1VerifyBitmaps is set, verify that the marking bitmaps do not
100 // have any spurious marks. If errors are detected, print
101 // appropriate error messages and crash.
102 void check_bitmaps(const char* caller) PRODUCT_RETURN;
103
104 // Do sanity check on the contents of the in-cset fast test table.
105 bool check_cset_fast_test() PRODUCT_RETURN_( return true; );
106
107 void verify_card_table_cleanup() PRODUCT_RETURN;
108
109 void verify_not_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
110 void verify_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
111 void verify_dirty_young_list(HeapRegion* head) PRODUCT_RETURN;
112 void verify_dirty_young_regions() PRODUCT_RETURN;
113 };
114
115 #endif // SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
--- EOF ---