fbsdcompat/libc_private.h

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