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annotate libmlk-core/mlk/core/panic.c @ 545:27303e9402de

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core: introduce mlk_alloc_expand
author David Demelier <markand@malikania.fr>
date Sun, 05 Mar 2023 22:14:02 +0100
parents d6757c30658e
children c7664b679a95
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1 /*
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2 * panic.c -- unrecoverable error handling
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3 *
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4 * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20 #include <stdio.h>
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21 #include <stdlib.h>
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23 #include "err.h"
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24 #include "panic.h"
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26 static void
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27 terminate(const char *what)
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28 {
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29 fprintf(stderr, "abort: %s\n", what);
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30 abort();
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31 exit(1);
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32 }
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33
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34 void (*mlk_panic_handler)(const char *) = terminate;
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35
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36 static void
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37 alive(void)
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38 {
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39 /*
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40 * This should not happen, if it does it means the user did not fully
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41 * satisfied the constraint of mlk_panic_handler.
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42 */
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43 fprintf(stderr, "abort: panic handler returned\n");
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44 exit(1);
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45 }
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47 void
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48 mlk_panicf(const char *fmt, ...)
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49 {
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50 assert(fmt);
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51
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52 va_list ap;
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53 char buf[PANIC_LINE_MAX];
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55 /*
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56 * We can't use mlk_panicva directly because we won't be able to call
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57 * va_end then.
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58 */
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59 va_start(ap, fmt);
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60 vsnprintf(buf, sizeof (buf), fmt, ap);
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61 va_end(ap);
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62
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63 mlk_panic_handler(buf);
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64 alive();
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65 }
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67 void
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68 mlk_panicva(const char *fmt, va_list ap)
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69 {
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70 assert(fmt);
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71 assert(mlk_panic_handler);
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73 char buf[PANIC_LINE_MAX];
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75 vsnprintf(buf, sizeof (buf), fmt, ap);
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76 mlk_panic_handler(buf);
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77 alive();
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78 }
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80 void
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81 mlk_panic(int err)
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82 {
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83 mlk_panicf("%s", mlk_err_string(err));
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84 }