fbsdcompat/libc_private.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by John Birrell.
  40  * 4. Neither the name of the author nor the names of any co-contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  *
  56  * $FreeBSD: src/lib/libc/include/libc_private.h,v 1.8 2002/11/13 21:55:22 deischen Exp $
  57  *
  58  * Private definitions for libc, libc_r and libpthread.
  59  *
  60  */
  61
  62 #ifndef _LIBC_PRIVATE_H_
  63 #define _LIBC_PRIVATE_H_
  64
  65 #ifdef __APPLE__
  66 #define __isthreaded    __is_threaded
  67 #endif // __APPLE__
  68
  69 /*
  70  * This global flag is non-zero when a process has created one
  71  * or more threads. It is used to avoid calling locking functions
  72  * when they are not required.
  73  */
  74 extern int      __isthreaded;
  75
  76 /*
  77  * File lock contention is difficult to diagnose without knowing
  78  * where locks were set. Allow a debug library to be built which
  79  * records the source file and line number of each lock call.
  80  */
  81 #ifdef  _FLOCK_DEBUG
  82 #define _FLOCKFILE(x)   _flockfile_debug(x, __FILE__, __LINE__)
  83 #else
  84 #define _FLOCKFILE(x)   _flockfile(x)
  85 #endif
  86
  87 /*
  88  * Macros for locking and unlocking FILEs. These test if the
  89  * process is threaded to avoid locking when not required.
  90  */
  91 #define FLOCKFILE(fp)           if (__isthreaded) _FLOCKFILE(fp)
  92 #define FUNLOCKFILE(fp)         if (__isthreaded) _funlockfile(fp)
  93
  94 /*
  95  * Indexes into the pthread jump table.
  96  *
  97  * Warning! If you change this type, you must also change the threads
  98  * libraries that reference it (libc_r, libpthread).
  99  */
 100 typedef enum {
 101         PJT_COND_BROADCAST,
 102         PJT_COND_DESTROY,
 103         PJT_COND_INIT,
 104         PJT_COND_SIGNAL,
 105         PJT_COND_WAIT,
 106         PJT_GETSPECIFIC,
 107         PJT_KEY_CREATE,
 108         PJT_KEY_DELETE,
 109         PJT_MAIN_NP,
 110         PJT_MUTEX_DESTROY,
 111         PJT_MUTEX_INIT,
 112         PJT_MUTEX_LOCK,
 113         PJT_MUTEX_TRYLOCK,
 114         PJT_MUTEX_UNLOCK,
 115         PJT_MUTEXATTR_DESTROY,
 116         PJT_MUTEXATTR_INIT,
 117         PJT_MUTEXATTR_SETTYPE,
 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_SETSPECIFIC,
 128         PJT_SIGMASK,
 129         PJT_MAX
 130 } pjt_index_t;
 131
 132 typedef int (*pthread_func_t)(void);
 133 typedef pthread_func_t pthread_func_entry_t[2];
 134
 135 extern pthread_func_entry_t __thr_jtable[];
 136
 137 #endif /* _LIBC_PRIVATE_H_ */