cups/thread-private.h

   1 /*
   2  * Private threading definitions for CUPS.
   3  *
   4  * Copyright 2009-2017 by Apple Inc.
   5  *
   6  * Licensed under Apache License v2.0.  See the file "LICENSE" for more information.
   7  */
   8
   9 #ifndef _CUPS_THREAD_PRIVATE_H_
  10 #  define _CUPS_THREAD_PRIVATE_H_
  11
  12 /*
  13  * Include necessary headers...
  14  */
  15
  16 #  include "config.h"
  17 #  include <cups/versioning.h>
  18
  19
  20 /*
  21  * C++ magic...
  22  */
  23
  24 #  ifdef __cplusplus
  25 extern "C" {
  26 #  endif /* __cplusplus */
  27
  28
  29 #  ifdef HAVE_PTHREAD_H                 /* POSIX threading */
  30 #    include <pthread.h>
  31 typedef void *(*_cups_thread_func_t)(void *arg);
  32 typedef pthread_t _cups_thread_t;
  33 typedef pthread_cond_t _cups_cond_t;
  34 typedef pthread_mutex_t _cups_mutex_t;
  35 typedef pthread_rwlock_t _cups_rwlock_t;
  36 typedef pthread_key_t   _cups_threadkey_t;
  37 #    define _CUPS_COND_INITIALIZER PTHREAD_COND_INITIALIZER
  38 #    define _CUPS_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
  39 #    define _CUPS_RWLOCK_INITIALIZER PTHREAD_RWLOCK_INITIALIZER
  40 #    define _CUPS_THREADKEY_INITIALIZER 0
  41 #    define _cupsThreadGetData(k) pthread_getspecific(k)
  42 #    define _cupsThreadSetData(k,p) pthread_setspecific(k,p)
  43
  44 #  elif defined(_WIN32)                 /* Windows threading */
  45 #    include <winsock2.h>
  46 #    include <windows.h>
  47 typedef void *(__stdcall *_cups_thread_func_t)(void *arg);
  48 typedef int _cups_thread_t;
  49 typedef char _cups_cond_t;              /* TODO: Implement Win32 conditional */
  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_COND_INITIALIZER 0
  59 #    define _CUPS_MUTEX_INITIALIZER { 0, 0 }
  60 #    define _CUPS_RWLOCK_INITIALIZER { 0, 0 }
  61 #    define _CUPS_THREADKEY_INITIALIZER 0
  62 #    define _cupsThreadGetData(k) TlsGetValue(k)
  63 #    define _cupsThreadSetData(k,p) TlsSetValue(k,p)
  64
  65 #  else                                 /* No threading */
  66 typedef void    *(*_cups_thread_func_t)(void *arg);
  67 typedef int     _cups_thread_t;
  68 typedef char    _cups_cond_t;
  69 typedef char    _cups_mutex_t;
  70 typedef char    _cups_rwlock_t;
  71 typedef void    *_cups_threadkey_t;
  72 #    define _CUPS_COND_INITIALIZER 0
  73 #    define _CUPS_MUTEX_INITIALIZER 0
  74 #    define _CUPS_RWLOCK_INITIALIZER 0
  75 #    define _CUPS_THREADKEY_INITIALIZER (void *)0
  76 #    define _cupsThreadGetData(k) k
  77 #    define _cupsThreadSetData(k,p) k=p
  78 #  endif /* HAVE_PTHREAD_H */
  79
  80
  81 /*
  82  * Functions...
  83  */
  84
  85 extern void     _cupsCondBroadcast(_cups_cond_t *cond) _CUPS_PRIVATE;
  86 extern void     _cupsCondInit(_cups_cond_t *cond) _CUPS_PRIVATE;
  87 extern void     _cupsCondWait(_cups_cond_t *cond, _cups_mutex_t *mutex, double timeout) _CUPS_PRIVATE;
  88 extern void     _cupsMutexInit(_cups_mutex_t *mutex) _CUPS_PRIVATE;
  89 extern void     _cupsMutexLock(_cups_mutex_t *mutex) _CUPS_PRIVATE;
  90 extern void     _cupsMutexUnlock(_cups_mutex_t *mutex) _CUPS_PRIVATE;
  91 extern void     _cupsRWInit(_cups_rwlock_t *rwlock) _CUPS_PRIVATE;
  92 extern void     _cupsRWLockRead(_cups_rwlock_t *rwlock) _CUPS_PRIVATE;
  93 extern void     _cupsRWLockWrite(_cups_rwlock_t *rwlock) _CUPS_PRIVATE;
  94 extern void     _cupsRWUnlock(_cups_rwlock_t *rwlock) _CUPS_PRIVATE;
  95 extern void     _cupsThreadCancel(_cups_thread_t thread) _CUPS_PRIVATE;
  96 extern _cups_thread_t _cupsThreadCreate(_cups_thread_func_t func, void *arg) _CUPS_PRIVATE;
  97 extern void     _cupsThreadDetach(_cups_thread_t thread) _CUPS_PRIVATE;
  98 extern void     *_cupsThreadWait(_cups_thread_t thread) _CUPS_PRIVATE;
  99
 100 #  ifdef __cplusplus
 101 }
 102 #  endif /* __cplusplus */
 103 #endif /* !_CUPS_THREAD_PRIVATE_H_ */