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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  */
46 extern 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  */
72 typedef enum {
102 } pjt_index_t;
103 
104 typedef int (*pthread_func_t)(void);
106 
108 
109 /*
110  * yplib internal interfaces
111  */
112 #ifdef YP
113 int _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  */
121 extern 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  */
127 extern struct _spinlock *__malloc_lock;
128 
129 #endif /* _LIBC_PRIVATE_H_ */
struct png_info_def **typedef void(__cdecl typeof(png_destroy_read_struct))(struct png_struct_def **
Definition: typeof.h:49
int(* pthread_func_t)(void)
Definition: libc_private.h:104
pthread_func_t pthread_func_entry_t[2]
Definition: libc_private.h:105
const char * __progname
Definition: finger.c:63
struct _spinlock * __malloc_lock
pthread_func_entry_t __thr_jtable[]
int __isthreaded
pjt_index_t
Definition: libc_private.h:72
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31