117 lines
4.4 KiB
C++
117 lines
4.4 KiB
C++
/*
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* Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
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#define SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
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#include "gc/g1/heapRegionSet.hpp"
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#include "memory/allocation.hpp"
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#include "memory/universe.hpp"
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class G1CollectedHeap;
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class G1HeapVerifier : public CHeapObj<mtGC> {
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private:
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G1CollectedHeap* _g1h;
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// verify_region_sets() performs verification over the region
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// lists. It will be compiled in the product code to be used when
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// necessary (i.e., during heap verification).
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void verify_region_sets();
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public:
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G1HeapVerifier(G1CollectedHeap* heap) : _g1h(heap) { }
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// Perform verification.
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// vo == UsePrevMarking -> use "prev" marking information,
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// vo == UseNextMarking -> use "next" marking information
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// vo == UseMarkWord -> use the mark word in the object header
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//
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// NOTE: Only the "prev" marking information is guaranteed to be
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// consistent most of the time, so most calls to this should use
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// vo == UsePrevMarking.
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// Currently, there is only one case where this is called with
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// vo == UseNextMarking, which is to verify the "next" marking
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// information at the end of remark.
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// Currently there is only one place where this is called with
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// vo == UseMarkWord, which is to verify the marking during a
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// full GC.
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void verify(VerifyOption vo);
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// verify_region_sets_optional() is planted in the code for
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// list verification in non-product builds (and it can be enabled in
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// product builds by defining HEAP_REGION_SET_FORCE_VERIFY to be 1).
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#if HEAP_REGION_SET_FORCE_VERIFY
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void verify_region_sets_optional() {
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verify_region_sets();
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}
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#else // HEAP_REGION_SET_FORCE_VERIFY
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void verify_region_sets_optional() { }
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#endif // HEAP_REGION_SET_FORCE_VERIFY
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void prepare_for_verify();
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double verify(bool guard, const char* msg);
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void verify_before_gc();
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void verify_after_gc();
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#ifndef PRODUCT
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// Make sure that the given bitmap has no marked objects in the
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// range [from,limit). If it does, print an error message and return
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// false. Otherwise, just return true. bitmap_name should be "prev"
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// or "next".
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bool verify_no_bits_over_tams(const char* bitmap_name, const G1CMBitMap* const bitmap,
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HeapWord* from, HeapWord* limit);
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// Verify that the prev / next bitmap range [tams,end) for the given
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// region has no marks. Return true if all is well, false if errors
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// are detected.
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bool verify_bitmaps(const char* caller, HeapRegion* hr);
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#endif // PRODUCT
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// If G1VerifyBitmaps is set, verify that the marking bitmaps for
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// the given region do not have any spurious marks. If errors are
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// detected, print appropriate error messages and crash.
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void check_bitmaps(const char* caller, HeapRegion* hr) PRODUCT_RETURN;
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// If G1VerifyBitmaps is set, verify that the marking bitmaps do not
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// have any spurious marks. If errors are detected, print
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// appropriate error messages and crash.
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void check_bitmaps(const char* caller) PRODUCT_RETURN;
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// Do sanity check on the contents of the in-cset fast test table.
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bool check_cset_fast_test() PRODUCT_RETURN_( return true; );
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void verify_card_table_cleanup() PRODUCT_RETURN;
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void verify_not_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
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void verify_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
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void verify_dirty_young_regions() PRODUCT_RETURN;
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static void verify_archive_regions();
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};
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#endif // SHARE_VM_GC_G1_G1HEAPVERIFIER_HPP
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