cups/thread-private.h

   1 /*
   2  * Private threading definitions for CUPS.
   3  *
   4  * Copyright 2009-2014 by Apple Inc.
   5  *
   6  * These coded instructions, statements, and computer programs are the
   7  * property of Apple Inc. and are protected by Federal copyright
   8  * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
   9  * which should have been included with this file.  If this file is
  10  * file is missing or damaged, see the license at "http://www.cups.org/".
  11  *
  12  * This file is subject to the Apple OS-Developed Software exception.
  13  */
  14
  15 #ifndef _CUPS_THREAD_PRIVATE_H_
  16 #  define _CUPS_THREAD_PRIVATE_H_
  17
  18 /*
  19  * Include necessary headers...
  20  */
  21
  22 #  include "config.h"
  23
  24
  25 /*
  26  * C++ magic...
  27  */
  28
  29 #  ifdef __cplusplus
  30 extern "C" {
  31 #  endif /* __cplusplus */
  32
  33
  34 #  ifdef HAVE_PTHREAD_H
  35 #    include <pthread.h>
  36 typedef void *(*_cups_thread_func_t)(void *arg);
  37 typedef pthread_mutex_t _cups_mutex_t;
  38 typedef pthread_rwlock_t _cups_rwlock_t;
  39 typedef pthread_key_t   _cups_threadkey_t;
  40 #    define _CUPS_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
  41 #    define _CUPS_RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER
  42 #    define _CUPS_THREADKEY_INITIALIZER 0
  43 #    define _cupsThreadGetData(k) pthread_getspecific(k)
  44 #    define _cupsThreadSetData(k,p) pthread_setspecific(k,p)
  45
  46 #  elif defined(WIN32)
  47 #    include <winsock2.h>
  48 #    include <windows.h>
  49 typedef void *(__stdcall *_cups_thread_func_t)(void *arg);
  50 typedef struct _cups_mutex_s
  51 {
  52   int                   m_init;         /* Flag for on-demand initialization */
  53   CRITICAL_SECTION      m_criticalSection;
  54                                         /* Win32 Critical Section */
  55 } _cups_mutex_t;
  56 typedef _cups_mutex_t _cups_rwlock_t;   /* TODO: Implement Win32 reader/writer lock */
  57 typedef DWORD   _cups_threadkey_t;
  58 #    define _CUPS_MUTEX_INITIALIZER { 0, 0 }
  59 #    define _CUPS_RWLOCK_INITIALIZER { 0, 0 }
  60 #    define _CUPS_THREADKEY_INITIALIZER 0
  61 #    define _cupsThreadGetData(k) TlsGetValue(k)
  62 #    define _cupsThreadSetData(k,p) TlsSetValue(k,p)
  63
  64 #  else
  65 typedef void    *(*_cups_thread_func_t)(void *arg);
  66 typedef char    _cups_mutex_t;
  67 typedef char    _cups_rwlock_t;
  68 typedef void    *_cups_threadkey_t;
  69 #    define _CUPS_MUTEX_INITIALIZER 0
  70 #    define _CUPS_RWLOCK_INITIALIZER 0
  71 #    define _CUPS_THREADKEY_INITIALIZER (void *)0
  72 #    define _cupsThreadGetData(k) k
  73 #    define _cupsThreadSetData(k,p) k=p
  74 #  endif /* HAVE_PTHREAD_H */
  75
  76
  77 /*
  78  * Functions...
  79  */
  80
  81 extern void     _cupsMutexInit(_cups_mutex_t *mutex);
  82 extern void     _cupsMutexLock(_cups_mutex_t *mutex);
  83 extern void     _cupsMutexUnlock(_cups_mutex_t *mutex);
  84 extern void     _cupsRWInit(_cups_rwlock_t *rwlock);
  85 extern void     _cupsRWLockRead(_cups_rwlock_t *rwlock);
  86 extern void     _cupsRWLockWrite(_cups_rwlock_t *rwlock);
  87 extern void     _cupsRWUnlock(_cups_rwlock_t *rwlock);
  88 extern int      _cupsThreadCreate(_cups_thread_func_t func, void *arg);
  89
  90
  91 #  ifdef __cplusplus
  92 }
  93 #  endif /* __cplusplus */
  94 #endif /* !_CUPS_THREAD_PRIVATE_H_ */