/*
* Copyright ( c ) 2014 , 2022 , Oracle and / or its affiliates . All rights reserved .
* Copyright ( c ) 2021 , 2022 SAP SE . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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*/
#include "precompiled.hpp"
#include "services/mallocHeader.inline.hpp"
#include "runtime/os.hpp"
#include "services/mallocSiteTable.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/nativeCallStack.hpp"
#include "utilities/ostream.hpp"
void MallocHeader::print_block_on_error(outputStream* st, address bad_address) const {
assert(bad_address >= (address)this , "sanity" );
// This function prints block information, including hex dump, in case of a detected
// corruption. The hex dump should show both block header and corruption site
// (which may or may not be close together or identical). Plus some surrounding area.
//
// Note that we use os::print_hex_dump(), which is able to cope with unmapped
// memory (it uses SafeFetch).
st->print_cr("NMT Block at " PTR_FORMAT ", corruption at: " PTR_FORMAT ": " ,
p2i(this ), p2i(bad_address));
static const size_t min_dump_length = 256 ;
address from1 = align_down((address)this , sizeof (void *)) - (min_dump_length / 2 );
address to1 = from1 + min_dump_length;
address from2 = align_down(bad_address, sizeof (void *)) - (min_dump_length / 2 );
address to2 = from2 + min_dump_length;
if (from2 > to1) {
// Dump gets too large, split up in two sections.
os::print_hex_dump(st, from1, to1, 1 );
st->print_cr("..." );
os::print_hex_dump(st, from2, to2, 1 );
} else {
// print one hex dump
os::print_hex_dump(st, from1, to2, 1 );
}
}
bool MallocHeader::get_stack(NativeCallStack& stack) const {
return MallocSiteTable::access_stack(stack, _mst_marker);
}
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