mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-12 01:45:16 -05:00
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
|
// stacktrace.h (c) 2008, Timo Bingmann from http://idlebox.net/
|
||
|
|
// published under the WTFPL v2.0
|
||
|
|
|
||
|
|
#ifndef _STACKTRACE_H_
|
||
|
|
#define _STACKTRACE_H_
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <execinfo.h>
|
||
|
|
#include <cxxabi.h>
|
||
|
|
|
||
|
|
/** Print a demangled stack backtrace of the caller function to FILE* out. */
|
||
|
|
static inline void print_stacktrace(FILE *out = stderr, unsigned int max_frames = 63)
|
||
|
|
{
|
||
|
|
fprintf(out, "stack trace:\n");
|
||
|
|
|
||
|
|
// storage array for stack trace address data
|
||
|
|
void* addrlist[max_frames+1];
|
||
|
|
|
||
|
|
// retrieve current stack addresses
|
||
|
|
int addrlen = backtrace(addrlist, sizeof(addrlist) / sizeof(void*));
|
||
|
|
|
||
|
|
if (addrlen == 0) {
|
||
|
|
fprintf(out, " <empty, possibly corrupt>\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// resolve addresses into strings containing "filename(function+address)",
|
||
|
|
// this array must be free()-ed
|
||
|
|
char** symbollist = backtrace_symbols(addrlist, addrlen);
|
||
|
|
|
||
|
|
// allocate string which will be filled with the demangled function name
|
||
|
|
size_t funcnamesize = 256;
|
||
|
|
char* funcname = (char*)malloc(funcnamesize);
|
||
|
|
|
||
|
|
// iterate over the returned symbol lines. skip the first, it is the
|
||
|
|
// address of this function.
|
||
|
|
for (int i = 1; i < addrlen; i++)
|
||
|
|
{
|
||
|
|
char *begin_name = 0, *begin_offset = 0, *end_offset = 0;
|
||
|
|
|
||
|
|
// find parentheses and +address offset surrounding the mangled name:
|
||
|
|
// ./module(function+0x15c) [0x8048a6d]
|
||
|
|
for (char *p = symbollist[i]; *p; ++p)
|
||
|
|
{
|
||
|
|
if (*p == '(')
|
||
|
|
begin_name = p;
|
||
|
|
else if (*p == '+')
|
||
|
|
begin_offset = p;
|
||
|
|
else if (*p == ')' && begin_offset) {
|
||
|
|
end_offset = p;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (begin_name && begin_offset && end_offset
|
||
|
|
&& begin_name < begin_offset)
|
||
|
|
{
|
||
|
|
*begin_name++ = '\0';
|
||
|
|
*begin_offset++ = '\0';
|
||
|
|
*end_offset = '\0';
|
||
|
|
|
||
|
|
// mangled name is now in [begin_name, begin_offset) and caller
|
||
|
|
// offset in [begin_offset, end_offset). now apply
|
||
|
|
// __cxa_demangle():
|
||
|
|
|
||
|
|
int status;
|
||
|
|
char* ret = abi::__cxa_demangle(begin_name,
|
||
|
|
funcname, &funcnamesize, &status);
|
||
|
|
if (status == 0) {
|
||
|
|
funcname = ret; // use possibly realloc()-ed string
|
||
|
|
fprintf(out, " %s : %s+%s\n",
|
||
|
|
symbollist[i], funcname, begin_offset);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
// demangling failed. Output function name as a C function with
|
||
|
|
// no arguments.
|
||
|
|
fprintf(out, " %s : %s()+%s\n",
|
||
|
|
symbollist[i], begin_name, begin_offset);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// couldn't parse the line? print the whole line.
|
||
|
|
fprintf(out, " %s\n", symbollist[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
free(funcname);
|
||
|
|
free(symbollist);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // _STACKTRACE_H_
|