libc_private.h revision 211706
1121407Speter/* 2121407Speter * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. 3323538Skib * All rights reserved. 4121407Speter * 5121407Speter * Redistribution and use in source and binary forms, with or without 6323538Skib * modification, are permitted provided that the following conditions 7323538Skib * are met: 8323538Skib * 1. Redistributions of source code must retain the above copyright 9121407Speter * notice, this list of conditions and the following disclaimer. 10121407Speter * 2. Redistributions in binary form must reproduce the above copyright 11121407Speter * notice, this list of conditions and the following disclaimer in the 12121407Speter * documentation and/or other materials provided with the distribution. 13121407Speter * 3. Neither the name of the author nor the names of any co-contributors 14121407Speter * may be used to endorse or promote products derived from this software 15121407Speter * without specific prior written permission. 16121407Speter * 17121407Speter * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18121407Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19121407Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20121407Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21121407Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22121407Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23121407Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24121407Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25121407Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26121407Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27121407Speter * SUCH DAMAGE. 28121407Speter * 29121407Speter * $FreeBSD: head/lib/libc/include/libc_private.h 211706 2010-08-23 15:38:02Z kib $ 30121407Speter * 31121407Speter * Private definitions for libc, libc_r and libpthread. 32121407Speter * 33121407Speter */ 34323538Skib 35323538Skib#ifndef _LIBC_PRIVATE_H_ 36121407Speter#define _LIBC_PRIVATE_H_ 37323538Skib#include <sys/_pthreadtypes.h> 38121407Speter 39121407Speter/* 40121407Speter * This global flag is non-zero when a process has created one 41121407Speter * or more threads. It is used to avoid calling locking functions 42121407Speter * when they are not required. 43323538Skib */ 44323538Skibextern int __isthreaded; 45323538Skib 46323538Skib/* 47124296Snectar * File lock contention is difficult to diagnose without knowing 48121407Speter * 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 */ 70typedef 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_MAX 133} pjt_index_t; 134 135typedef int (*pthread_func_t)(void); 136typedef pthread_func_t pthread_func_entry_t[2]; 137 138extern pthread_func_entry_t __thr_jtable[]; 139 140/* 141 * yplib internal interfaces 142 */ 143#ifdef YP 144int _yp_check(char **); 145#endif 146 147/* 148 * Initialise TLS for static programs 149 */ 150void _init_tls(void); 151 152/* 153 * Provides pthread_once()-like functionality for both single-threaded 154 * and multi-threaded applications. 155 */ 156int _once(pthread_once_t *, void (*)(void)); 157 158/* 159 * Set the TLS thread pointer 160 */ 161void _set_tp(void *tp); 162 163/* 164 * This is a pointer in the C run-time startup code. It is used 165 * by getprogname() and setprogname(). 166 */ 167extern const char *__progname; 168 169/* 170 * This function is used by the threading libraries to notify malloc that a 171 * thread is exiting. 172 */ 173void _malloc_thread_cleanup(void); 174 175/* 176 * These functions are used by the threading libraries in order to protect 177 * malloc across fork(). 178 */ 179void _malloc_prefork(void); 180void _malloc_postfork(void); 181 182/* 183 * Function to clean up streams, called from abort() and exit(). 184 */ 185extern void (*__cleanup)(void); 186 187/* 188 * Get kern.osreldate to detect ABI revisions. Explicitly 189 * ignores value of $OSVERSION and caches result. Prototypes 190 * for the wrapped "new" pad-less syscalls are here for now. 191 */ 192extern int __getosreldate(void); 193#include <sys/_types.h> 194/* Without pad */ 195extern __off_t __sys_lseek(int, __off_t, int); 196extern int __sys_ftruncate(int, __off_t); 197extern int __sys_truncate(const char *, __off_t); 198extern __ssize_t __sys_pread(int, void *, __size_t, __off_t); 199extern __ssize_t __sys_pwrite(int, const void *, __size_t, __off_t); 200extern void * __sys_mmap(void *, __size_t, int, int, int, __off_t); 201 202/* With pad */ 203extern __off_t __sys_freebsd6_lseek(int, int, __off_t, int); 204extern int __sys_freebsd6_ftruncate(int, int, __off_t); 205extern int __sys_freebsd6_truncate(const char *, int, __off_t); 206extern __ssize_t __sys_freebsd6_pread(int, void *, __size_t, int, __off_t); 207extern __ssize_t __sys_freebsd6_pwrite(int, const void *, __size_t, int, __off_t); 208extern void * __sys_freebsd6_mmap(void *, __size_t, int, int, int, int, __off_t); 209 210/* Without back-compat translation */ 211extern int __sys_fcntl(int, int, ...); 212 213/* execve() with PATH processing to implement posix_spawnp() */ 214int _execvpe(const char *, char * const *, char * const *); 215 216int _elf_aux_info(int aux, void *buf, int buflen); 217struct dl_phdr_info; 218int __elf_phdr_match_addr(struct dl_phdr_info *, void *); 219 220#endif /* _LIBC_PRIVATE_H_ */ 221