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/*
* Copyright 2016 Garrett D'Amore <garrett@damore.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#ifdef NNG_HAVE_BACKTRACE
#include <execinfo.h>
#endif
#include "nng_impl.h"
/*
* Panic handling.
*/
static void
show_backtrace(void)
{
#if NNG_HAVE_BACKTRACE
void *frames[50];
int nframes;
char **lines;
int i;
nframes = backtrace(frames, sizeof (frames) / sizeof (frames[0]));
if (nframes > 1) {
lines = backtrace_symbols(frames, nframes);
if (lines == NULL) {
return;
}
for (i = 1; i < nframes; i++) {
nni_debug_out(lines[i]);
}
}
#endif
}
/*
* nni_panic shows a panic message, a possible stack bracktrace, then aborts
* the process/program. This should only be called when a condition arises
* that should not be possible, e.g. a programming assertion failure. It should
* not be called in situations such as ENOMEM, as nni_panic is fairly rude
* to any application it may be called from within.
*/
void
nni_panic(const char *fmt, ...)
{
char buf[128];
char fbuf[128];
va_list va;
va_start(va, fmt);
(void) nni_snprintf(fbuf, sizeof (buf), "panic: %s", fmt);
(void) nni_vsnprintf(buf, sizeof (buf), fbuf, va);
va_end(va);
nni_debug_out(buf);
nni_debug_out("This message is indicative of a BUG.");
nni_debug_out("Report this at http://github.com/nanomsg/nanomsg");
show_backtrace();
nni_abort();
}
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