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 * $FreeBSD$ 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 { 73 PJT_ATFORK, 74 PJT_ATTR_DESTROY, 75 PJT_ATTR_GETDETACHSTATE, 76 PJT_ATTR_GETGUARDSIZE, 77 PJT_ATTR_GETINHERITSCHED, 78 PJT_ATTR_GETSCHEDPARAM, 79 PJT_ATTR_GETSCHEDPOLICY, 80 PJT_ATTR_GETSCOPE, 81 PJT_ATTR_GETSTACKADDR, 82 PJT_ATTR_GETSTACKSIZE, 83 PJT_ATTR_INIT, 84 PJT_ATTR_SETDETACHSTATE, 85 PJT_ATTR_SETGUARDSIZE, 86 PJT_ATTR_SETINHERITSCHED, 87 PJT_ATTR_SETSCHEDPARAM, 88 PJT_ATTR_SETSCHEDPOLICY, 89 PJT_ATTR_SETSCOPE, 90 PJT_ATTR_SETSTACKADDR, 91 PJT_ATTR_SETSTACKSIZE, 92 PJT_CANCEL, 93 PJT_CLEANUP_POP, 94 PJT_CLEANUP_PUSH, 95 PJT_COND_BROADCAST, 96 PJT_COND_DESTROY, 97 PJT_COND_INIT, 98 PJT_COND_SIGNAL, 99 PJT_COND_TIMEDWAIT, 100 PJT_COND_WAIT, 101 PJT_DETACH, 102 PJT_EQUAL, 103 PJT_EXIT, 104 PJT_GETSPECIFIC, 105 PJT_JOIN, 106 PJT_KEY_CREATE, 107 PJT_KEY_DELETE, 108 PJT_KILL, 109 PJT_MAIN_NP, 110 PJT_MUTEXATTR_DESTROY, 111 PJT_MUTEXATTR_INIT, 112 PJT_MUTEXATTR_SETTYPE, 113 PJT_MUTEX_DESTROY, 114 PJT_MUTEX_INIT, 115 PJT_MUTEX_LOCK, 116 PJT_MUTEX_TRYLOCK, 117 PJT_MUTEX_UNLOCK, 118 PJT_ONCE, 119 PJT_RWLOCK_DESTROY, 120 PJT_RWLOCK_INIT, 121 PJT_RWLOCK_RDLOCK, 122 PJT_RWLOCK_TRYRDLOCK, 123 PJT_RWLOCK_TRYWRLOCK, 124 PJT_RWLOCK_UNLOCK, 125 PJT_RWLOCK_WRLOCK, 126 PJT_SELF, 127 PJT_SETCANCELSTATE, 128 PJT_SETCANCELTYPE, 129 PJT_SETSPECIFIC, 130 PJT_SIGMASK, 131 PJT_TESTCANCEL, 132 PJT_MAX 133 } pjt_index_t; 134 135 typedef int (*pthread_func_t)(void); 136 typedef pthread_func_t pthread_func_entry_t[2]; 137 138 extern pthread_func_entry_t __thr_jtable[]; 139 140 /* 141 * yplib internal interfaces 142 */ 143 #ifdef YP 144 int _yp_check(char **); 145 #endif 146 147 /* 148 * Initialise TLS for static programs 149 */ 150 void _init_tls(void); 151 152 /* 153 * Set the TLS thread pointer 154 */ 155 void _set_tp(void *tp); 156 157 /* 158 * This is a pointer in the C run-time startup code. It is used 159 * by getprogname() and setprogname(). 160 */ 161 extern const char *__progname; 162 163 /* 164 * These functions are used by the threading libraries in order to protect 165 * malloc across fork(). 166 */ 167 void _malloc_prefork(void); 168 void _malloc_postfork(void); 169 170 /* 171 * Function to clean up streams, called from abort() and exit(). 172 */ 173 extern void (*__cleanup)(void); 174 175 #endif /* _LIBC_PRIVATE_H_ */ 176