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e847591867
The previous commit removed the code related to the internal symbol table. On platforms where available, we can now use backtrace_symbols() to print more verbose symbols table to the output. As there's now general availability of backtrace() and backtrace_symbols() functions (see below), the commit also removes the usage of glibc internals and the custom stack tracing. * backtrace(), backtrace_symbols(), and backtrace_symbols_fd() are provided in glibc since version 2.1. * backtrace(), backtrace_symbols(), and backtrace_symbols_fd() first appeared in Mac OS X 10.5. * The backtrace() library of functions first appeared in NetBSD 7.0 and FreeBSD 10.0.
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_BACKTRACE
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#include <execinfo.h>
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#endif /* HAVE_BACKTRACE */
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#include <isc/backtrace.h>
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#include <isc/result.h>
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#include <isc/util.h>
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#ifdef HAVE_BACKTRACE
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isc_result_t
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isc_backtrace_gettrace(void **addrs, int maxaddrs, int *nframes) {
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/*
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* Validate the arguments: intentionally avoid using REQUIRE().
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* See notes in backtrace.h.
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*/
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if (addrs == NULL || nframes == NULL) {
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return (ISC_R_FAILURE);
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}
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/*
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* backtrace(3) includes this function itself in the address array,
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* which should be eliminated from the returned sequence.
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*/
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int n = backtrace(addrs, maxaddrs);
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if (n < 2) {
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return (ISC_R_NOTFOUND);
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}
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n--;
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memmove(addrs, &addrs[1], sizeof(addrs[0]) * n);
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*nframes = n;
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return (ISC_R_SUCCESS);
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}
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#else /* HAVE_BACKTRACE */
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isc_result_t
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isc_backtrace_gettrace(void **addrs, int maxaddrs, int *nframes) {
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UNUSED(addrs);
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UNUSED(maxaddrs);
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UNUSED(nframes);
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return (ISC_R_NOTIMPLEMENTED);
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}
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#endif /* HAVE_BACKTRACE */
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