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Signed-off-by: Alfred Persson Forsberg <[email protected]>
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#define UNW_LOCAL_ONLY | ||
#include <libunwind.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <sys/types.h> | ||
#include <sys/uio.h> | ||
#include <dlfcn.h> | ||
#include <math.h> | ||
#include <stddef.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <unistd.h> | ||
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#define D10(x) ceil(log10(((x) == 0) ? 2 : ((x) + 1))) | ||
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inline static void * | ||
realloc_safe(void *ptr, size_t size) { | ||
void *nptr; | ||
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nptr = realloc(ptr, size); | ||
if (nptr == NULL) | ||
free(ptr); | ||
return nptr; | ||
} | ||
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int backtrace(void** buffer, int size) { | ||
unw_cursor_t cur; | ||
unw_context_t ctx; | ||
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unw_getcontext(&ctx); | ||
unw_init_local(&cur, &ctx); | ||
unw_step(&cur); // step over the 'backtrace' call. (this function) | ||
int i = 0; | ||
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do { | ||
if (++i == size) { | ||
return i - 1; | ||
} | ||
unw_word_t ip; | ||
unw_get_reg(&cur, UNW_REG_IP, &ip); | ||
buffer[i - 1] = (void*)ip; | ||
} while (unw_step(&cur)); | ||
return i - 1; | ||
} | ||
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// pasted from resslinux/libexecinfo | ||
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char **backtrace_symbols(void *const *buffer, int size) { | ||
size_t clen, alen; | ||
int i, offset; | ||
char **rval; | ||
Dl_info info; | ||
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clen = size * sizeof(char *); | ||
rval = malloc(clen); | ||
if (rval == NULL) | ||
return NULL; | ||
for (i = 0; i < size; i++) { | ||
if (dladdr(buffer[i], &info) != 0) { | ||
if (info.dli_sname == NULL) { | ||
info.dli_sname = "???"; // "cannot find symbol name :d "; | ||
} | ||
if (info.dli_saddr == NULL) { | ||
info.dli_saddr = buffer[i]; | ||
} | ||
offset = buffer[i] - info.dli_saddr; | ||
/* "0x01234567 <function+offset> at filename" */ | ||
alen = 2 + /* "0x" */ | ||
(sizeof(void *) * 2) + /* "01234567" */ | ||
2 + /* " <" */ | ||
strlen(info.dli_sname) + /* "function" */ | ||
1 + /* "+" */ | ||
10 + /* "offset */ | ||
5 + /* "> at " */ | ||
strlen(info.dli_fname) + /* "filename" */ | ||
1; /* "\0" */ | ||
rval = realloc_safe(rval, clen + alen); | ||
if (rval == NULL) | ||
return NULL; | ||
snprintf((char *) rval + clen, alen, "%p <%s+%d> at %s", | ||
buffer[i], info.dli_sname, offset, info.dli_fname); | ||
} else { | ||
alen = 2 + /* "0x" */ | ||
(sizeof(void *) * 2) + /* "01234567" */ | ||
1; /* "\0" */ | ||
rval = realloc_safe(rval, clen + alen); | ||
if (rval == NULL) | ||
return NULL; | ||
snprintf((char *) rval + clen, alen, "%p", buffer[i]); | ||
} | ||
rval[i] = (char *) clen; | ||
clen += alen; | ||
} | ||
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for (i = 0; i < size; i++) | ||
rval[i] += (long) rval; | ||
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return rval; | ||
} | ||
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void backtrace_symbols_fd(void *const *buffer, int size, int fd) { | ||
int i, len, offset; | ||
char *buf; | ||
Dl_info info; | ||
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for (i = 0; i < size; i++) { | ||
if (dladdr(buffer[i], &info) != 0) { | ||
if (info.dli_sname == NULL) | ||
info.dli_sname = "???"; | ||
if (info.dli_saddr == NULL) | ||
info.dli_saddr = buffer[i]; | ||
offset = buffer[i] - info.dli_saddr; | ||
/* "0x01234567 <function+offset> at filename" */ | ||
len = 2 + /* "0x" */ | ||
(sizeof(void *) * 2) + /* "01234567" */ | ||
2 + /* " <" */ | ||
strlen(info.dli_sname) + /* "function" */ | ||
1 + /* "+" */ | ||
D10(offset) + /* "offset */ | ||
5 + /* "> at " */ | ||
strlen(info.dli_fname) + /* "filename" */ | ||
2; /* "\n\0" */ | ||
buf = alloca(len); | ||
if (buf == NULL) | ||
return; | ||
snprintf(buf, len, "%p <%s+%d> at %s\n", | ||
buffer[i], info.dli_sname, offset, info.dli_fname); | ||
} else { | ||
len = 2 + /* "0x" */ | ||
(sizeof(void *) * 2) + /* "01234567" */ | ||
2; /* "\n\0" */ | ||
buf = alloca(len); | ||
if (buf == NULL) | ||
return; | ||
snprintf(buf, len, "%p\n", buffer[i]); | ||
} | ||
write(fd, buf, strlen(buf)); | ||
} | ||
} |
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/* | ||
* Copyright (c) 2003 Maxim Sobolev <[email protected]> | ||
* All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions | ||
* are met: | ||
* 1. Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* 2. Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in the | ||
* documentation and/or other materials provided with the distribution. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | ||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | ||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
* SUCH DAMAGE. | ||
* | ||
* $Id: execinfo.h,v 1.2 2004/07/19 05:20:29 sobomax Exp $ | ||
*/ | ||
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#ifndef _EXECINFO_H_ | ||
#define _EXECINFO_H_ | ||
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#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
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int backtrace(void **, int); | ||
char ** backtrace_symbols(void *const *, int); | ||
void backtrace_symbols_fd(void *const *, int, int); | ||
char ** bt_name(void *const *, int, int); | ||
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#ifdef __cplusplus | ||
} | ||
#endif | ||
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#endif /* _EXECINFO_H_ */ |
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project('execinfo', 'c', version : '1.0.0') | ||
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# pkg = import('pkgconfig') | ||
prog_python = import('python').find_installation('python3') | ||
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dep_unwind = dependency('libunwind-generic', required: true)#, required : true) | ||
# deps = [ dep_unwind ] | ||
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execinfo = library('execinfo', 'execinfo.c', | ||
dependencies : [dep_unwind], | ||
install : true) | ||
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install_headers('execinfo.h') | ||
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#pkg.generate(execinfo, | ||
# description : 'Clone of the backtrace facility found in glibc implemented with libunwind') |