2 * Copyright (c) 2017 Juniper Networks. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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25 * $FreeBSD: head/lib/libc/stdlib/set_constraint_handler_s.c 322427 2017-08-12 15:18:17Z kib $
28 #include "namespace.h"
29 #include <sys/types.h>
30 #include <machine/atomic.h>
37 #include "un-namespace.h"
38 #include "libc_private.h"
41 * Rationale recommends allocating new memory each time.
43 static constraint_handler_t *_ch = NULL;
44 static pthread_mutex_t ch_lock = PTHREAD_MUTEX_INITIALIZER;
47 set_constraint_handler_s(constraint_handler_t handler)
49 constraint_handler_t *new, *old, ret;
51 new = malloc(sizeof(constraint_handler_t));
56 _pthread_mutex_lock(&ch_lock);
60 _pthread_mutex_unlock(&ch_lock);
71 __throw_constraint_handler_s(const char * restrict msg, errno_t error)
73 constraint_handler_t ch;
76 _pthread_mutex_lock(&ch_lock);
77 ch = _ch != NULL ? *_ch : NULL;
79 _pthread_mutex_unlock(&ch_lock);
85 abort_handler_s(const char * restrict msg, void * restrict ptr __unused,
86 errno_t error __unused)
88 static const char ahs[] = "abort_handler_s : ";
90 (void) _write(STDERR_FILENO, ahs, sizeof(ahs) - 1);
91 (void) _write(STDERR_FILENO, msg, strlen(msg));
92 (void) _write(STDERR_FILENO, "\n", 1);
97 ignore_handler_s(const char * restrict msg __unused,
98 void * restrict ptr __unused, errno_t error __unused)