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. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 * 31 * Private definitions for libc, libc_r and libpthread. 32 * 33 */ 34 35 #ifndef _LIBC_PRIVATE_H_ 36 #define _LIBC_PRIVATE_H_ 37 #include <sys/_pthreadtypes.h> 38 39 /* 40 * This global flag is non-zero when a process has created one 41 * or more threads. It is used to avoid calling locking functions 42 * when they are not required. 43 */ 44 extern int __isthreaded; 45 46 /* 47 * File lock contention is difficult to diagnose without knowing 48 * where locks were set. Allow a debug library to be built which 49 * records the source file and line number of each lock call. 50 */ 51 #ifdef _FLOCK_DEBUG 52 #define _FLOCKFILE(x) _flockfile_debug(x, __FILE__, __LINE__) 53 #else 54 #define _FLOCKFILE(x) _flockfile(x) 55 #endif 56 57 /* 58 * Macros for locking and unlocking FILEs. These test if the 59 * process is threaded to avoid locking when not required. 60 */ 61 #define FLOCKFILE(fp) if (__isthreaded) _FLOCKFILE(fp) 62 #define FUNLOCKFILE(fp) if (__isthreaded) _funlockfile(fp) 63 64 /* 65 * Indexes into the pthread jump table. 66 * 67 * Warning! If you change this type, you must also change the threads 68 * libraries that reference it (libc_r, libpthread). 69 */ 70 typedef enum { 71 PJT_ATFORK, 72 PJT_ATTR_DESTROY, 73 PJT_ATTR_GETDETACHSTATE, 74 PJT_ATTR_GETGUARDSIZE, 75 PJT_ATTR_GETINHERITSCHED, 76 PJT_ATTR_GETSCHEDPARAM, 77 PJT_ATTR_GETSCHEDPOLICY, 78 PJT_ATTR_GETSCOPE, 79 PJT_ATTR_GETSTACKADDR, 80 PJT_ATTR_GETSTACKSIZE, 81 PJT_ATTR_INIT, 82 PJT_ATTR_SETDETACHSTATE, 83 PJT_ATTR_SETGUARDSIZE, 84 PJT_ATTR_SETINHERITSCHED, 85 PJT_ATTR_SETSCHEDPARAM, 86 PJT_ATTR_SETSCHEDPOLICY, 87 PJT_ATTR_SETSCOPE, 88 PJT_ATTR_SETSTACKADDR, 89 PJT_ATTR_SETSTACKSIZE, 90 PJT_CANCEL, 91 PJT_CLEANUP_POP, 92 PJT_CLEANUP_PUSH, 93 PJT_COND_BROADCAST, 94 PJT_COND_DESTROY, 95 PJT_COND_INIT, 96 PJT_COND_SIGNAL, 97 PJT_COND_TIMEDWAIT, 98 PJT_COND_WAIT, 99 PJT_DETACH, 100 PJT_EQUAL, 101 PJT_EXIT, 102 PJT_GETSPECIFIC, 103 PJT_JOIN, 104 PJT_KEY_CREATE, 105 PJT_KEY_DELETE, 106 PJT_KILL, 107 PJT_MAIN_NP, 108 PJT_MUTEXATTR_DESTROY, 109 PJT_MUTEXATTR_INIT, 110 PJT_MUTEXATTR_SETTYPE, 111 PJT_MUTEX_DESTROY, 112 PJT_MUTEX_INIT, 113 PJT_MUTEX_LOCK, 114 PJT_MUTEX_TRYLOCK, 115 PJT_MUTEX_UNLOCK, 116 PJT_ONCE, 117 PJT_RWLOCK_DESTROY, 118 PJT_RWLOCK_INIT, 119 PJT_RWLOCK_RDLOCK, 120 PJT_RWLOCK_TRYRDLOCK, 121 PJT_RWLOCK_TRYWRLOCK, 122 PJT_RWLOCK_UNLOCK, 123 PJT_RWLOCK_WRLOCK, 124 PJT_SELF, 125 PJT_SETCANCELSTATE, 126 PJT_SETCANCELTYPE, 127 PJT_SETSPECIFIC, 128 PJT_SIGMASK, 129 PJT_TESTCANCEL, 130 PJT_CLEANUP_POP_IMP, 131 PJT_CLEANUP_PUSH_IMP, 132 PJT_CANCEL_ENTER, 133 PJT_CANCEL_LEAVE, 134 PJT_MAX 135 } pjt_index_t; 136 137 typedef int (*pthread_func_t)(void); 138 typedef pthread_func_t pthread_func_entry_t[2]; 139 140 extern pthread_func_entry_t __thr_jtable[]; 141 142 /* 143 * yplib internal interfaces 144 */ 145 #ifdef YP 146 int _yp_check(char **); 147 #endif 148 149 /* 150 * Initialise TLS for static programs 151 */ 152 void _init_tls(void); 153 154 /* 155 * Provides pthread_once()-like functionality for both single-threaded 156 * and multi-threaded applications. 157 */ 158 int _once(pthread_once_t *, void (*)(void)); 159 160 /* 161 * Set the TLS thread pointer 162 */ 163 void _set_tp(void *tp); 164 165 /* 166 * This is a pointer in the C run-time startup code. It is used 167 * by getprogname() and setprogname(). 168 */ 169 extern const char *__progname; 170 171 /* 172 * This function is used by the threading libraries to notify malloc that a 173 * thread is exiting. 174 */ 175 void _malloc_thread_cleanup(void); 176 177 /* 178 * These functions are used by the threading libraries in order to protect 179 * malloc across fork(). 180 */ 181 void _malloc_prefork(void); 182 void _malloc_postfork(void); 183 184 /* 185 * Function to clean up streams, called from abort() and exit(). 186 */ 187 extern void (*__cleanup)(void); 188 189 /* 190 * Get kern.osreldate to detect ABI revisions. Explicitly 191 * ignores value of $OSVERSION and caches result. Prototypes 192 * for the wrapped "new" pad-less syscalls are here for now. 193 */ 194 extern int __getosreldate(void); 195 #include <sys/_types.h> 196 /* Without pad */ 197 extern __off_t __sys_lseek(int, __off_t, int); 198 extern int __sys_ftruncate(int, __off_t); 199 extern int __sys_truncate(const char *, __off_t); 200 extern __ssize_t __sys_pread(int, void *, __size_t, __off_t); 201 extern __ssize_t __sys_pwrite(int, const void *, __size_t, __off_t); 202 extern void * __sys_mmap(void *, __size_t, int, int, int, __off_t); 203 204 /* With pad */ 205 extern __off_t __sys_freebsd6_lseek(int, int, __off_t, int); 206 extern int __sys_freebsd6_ftruncate(int, int, __off_t); 207 extern int __sys_freebsd6_truncate(const char *, int, __off_t); 208 extern __ssize_t __sys_freebsd6_pread(int, void *, __size_t, int, __off_t); 209 extern __ssize_t __sys_freebsd6_pwrite(int, const void *, __size_t, int, __off_t); 210 extern void * __sys_freebsd6_mmap(void *, __size_t, int, int, int, int, __off_t); 211 212 /* Without back-compat translation */ 213 extern int __sys_fcntl(int, int, ...); 214 215 /* execve() with PATH processing to implement posix_spawnp() */ 216 int _execvpe(const char *, char * const *, char * const *); 217 218 int _elf_aux_info(int aux, void *buf, int buflen); 219 struct dl_phdr_info; 220 int __elf_phdr_match_addr(struct dl_phdr_info *, void *); 221 222 void _pthread_cancel_enter(int); 223 void _pthread_cancel_leave(int); 224 225 #endif /* _LIBC_PRIVATE_H_ */ 226