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libc_private.h
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1/*
2 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by John Birrell.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: src/lib/libc/include/libc_private.h,v 1.11 2003/11/05 18:17:30 deischen Exp $
33 *
34 * Private definitions for libc, libc_r and libpthread.
35 *
36 */
37
38#ifndef _LIBC_PRIVATE_H_
39#define _LIBC_PRIVATE_H_
40
41/*
42 * This global flag is non-zero when a process has created one
43 * or more threads. It is used to avoid calling locking functions
44 * when they are not required.
45 */
46extern int __isthreaded;
47
48/*
49 * File lock contention is difficult to diagnose without knowing
50 * where locks were set. Allow a debug library to be built which
51 * records the source file and line number of each lock call.
52 */
53#ifdef _FLOCK_DEBUG
54#define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__)
55#else
56#define _FLOCKFILE(x) _flockfile(x)
57#endif
58
59/*
60 * Macros for locking and unlocking FILEs. These test if the
61 * process is threaded to avoid locking when not required.
62 */
63#define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp)
64#define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp)
65
66/*
67 * Indexes into the pthread jump table.
68 *
69 * Warning! If you change this type, you must also change the threads
70 * libraries that reference it (libc_r, libpthread).
71 */
72typedef enum {
101 PJT_MAX
103
106
108
109/*
110 * yplib internal interfaces
111 */
112#ifdef YP
113int _yp_check(char **);
114#endif
115
116
117/*
118 * This is a pointer in the C run-time startup code. It is used
119 * by getprogname() and setprogname().
120 */
121extern const char *__progname;
122
123/*
124 * This is the lock to make malloc() thread-safe. It is externalized
125 * so that thread libraries can protect malloc across fork().
126 */
127extern struct _spinlock *__malloc_lock;
128
129#endif /* _LIBC_PRIVATE_H_ */
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31
int __isthreaded
pthread_func_t pthread_func_entry_t[2]
Definition: libc_private.h:105
struct _spinlock * __malloc_lock
int(* pthread_func_t)(void)
Definition: libc_private.h:104
pjt_index_t
Definition: libc_private.h:72
@ PJT_RWLOCK_DESTROY
Definition: libc_private.h:91
@ PJT_MUTEXATTR_DESTROY
Definition: libc_private.h:87
@ PJT_RWLOCK_WRLOCK
Definition: libc_private.h:97
@ PJT_MUTEXATTR_SETTYPE
Definition: libc_private.h:89
@ PJT_COND_DESTROY
Definition: libc_private.h:74
@ PJT_RWLOCK_UNLOCK
Definition: libc_private.h:96
@ PJT_KEY_DELETE
Definition: libc_private.h:80
@ PJT_KEY_CREATE
Definition: libc_private.h:79
@ PJT_RWLOCK_INIT
Definition: libc_private.h:92
@ PJT_COND_WAIT
Definition: libc_private.h:77
@ PJT_MUTEXATTR_INIT
Definition: libc_private.h:88
@ PJT_RWLOCK_RDLOCK
Definition: libc_private.h:93
@ PJT_RWLOCK_TRYWRLOCK
Definition: libc_private.h:95
@ PJT_MUTEX_INIT
Definition: libc_private.h:83
@ PJT_MUTEX_LOCK
Definition: libc_private.h:84
@ PJT_MUTEX_TRYLOCK
Definition: libc_private.h:85
@ PJT_COND_BROADCAST
Definition: libc_private.h:73
@ PJT_COND_INIT
Definition: libc_private.h:75
@ PJT_SETSPECIFIC
Definition: libc_private.h:99
@ PJT_SIGMASK
Definition: libc_private.h:100
@ PJT_RWLOCK_TRYRDLOCK
Definition: libc_private.h:94
@ PJT_MAIN_NP
Definition: libc_private.h:81
@ PJT_SELF
Definition: libc_private.h:98
@ PJT_MUTEX_UNLOCK
Definition: libc_private.h:86
@ PJT_ONCE
Definition: libc_private.h:90
@ PJT_MUTEX_DESTROY
Definition: libc_private.h:82
@ PJT_GETSPECIFIC
Definition: libc_private.h:78
@ PJT_COND_SIGNAL
Definition: libc_private.h:76
@ PJT_MAX
Definition: libc_private.h:101
pthread_func_entry_t __thr_jtable[]
const char * __progname
Definition: finger.c:63