src/include/xbt/xbt_os_thread.h

   1 /* xbt/xbt_thread.h -- Thread portability layer                             */
   2
   3 /* Copyright (c) 2007, 2009, 2010. The SimGrid Team.
   4  * All rights reserved.                                                     */
   5
   6 /* This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the license (GNU LGPL) which comes with this package. */
   8
   9
  10 #ifndef _XBT_OS_THREAD_H
  11 #define _XBT_OS_THREAD_H
  12
  13 #include "gras_config.h"
  14 #include "xbt/misc.h"           /* SG_BEGIN_DECL */
  15 #include "xbt/function_types.h"
  16
  17 SG_BEGIN_DECL()
  18
  19 /** @addtogroup XBT_thread
  20  *  @brief Thread portability layer
  21  *
  22  *  This section describes the thread portability layer. It defines types and
  23  *  functions very close to the pthread API, but it's portable to windows too.
  24  *
  25  *  @{
  26  */
  27   /** \brief Thread data type (opaque structure) */
  28 typedef struct xbt_os_thread_ *xbt_os_thread_t;
  29
  30 #ifdef HAVE_PTHREAD_H
  31 #include <pthread.h>
  32 typedef pthread_key_t xbt_os_thread_key_t;
  33 #elif defined(_XBT_WIN32)
  34 typedef DWORD xbt_os_thread_key_t;
  35 #endif
  36
  37 /* Calls pthread_atfork() if present, and else does nothing.
  38  * The only known user of this wrapper is mmalloc_preinit().
  39  */
  40 XBT_PUBLIC(int) xbt_os_thread_atfork(void (*prepare)(void),
  41                                      void (*parent)(void),
  42                                      void (*child)(void));
  43
  44
  45 XBT_PUBLIC(xbt_os_thread_t) xbt_os_thread_create(const char *name,
  46                                                  pvoid_f_pvoid_t start_routine,
  47                                                  void *param,
  48                                                  void *data);
  49
  50 XBT_PUBLIC(void) xbt_os_thread_exit(int *retcode);
  51 XBT_PUBLIC(void) xbt_os_thread_detach(xbt_os_thread_t thread);
  52 XBT_PUBLIC(xbt_os_thread_t) xbt_os_thread_self(void);
  53 XBT_PUBLIC(const char *) xbt_os_thread_self_name(void);
  54 XBT_PUBLIC(const char *) xbt_os_thread_name(xbt_os_thread_t);
  55 XBT_PUBLIC(void) xbt_os_thread_set_extra_data(void *data);
  56 XBT_PUBLIC(void *) xbt_os_thread_get_extra_data(void);
  57 XBT_PUBLIC(void) xbt_os_thread_key_create(xbt_os_thread_key_t* key);
  58 XBT_PUBLIC(void) xbt_os_thread_set_specific(xbt_os_thread_key_t key, void* value);
  59 XBT_PUBLIC(void*) xbt_os_thread_get_specific(xbt_os_thread_key_t key);
  60   /* xbt_os_thread_join frees the joined thread (ie the XBT wrapper around it, the OS frees the rest) */
  61 XBT_PUBLIC(void) xbt_os_thread_join(xbt_os_thread_t thread,
  62                                     void **thread_return);
  63 XBT_PUBLIC(void) xbt_os_thread_yield(void);
  64 XBT_PUBLIC(void) xbt_os_thread_cancel(xbt_os_thread_t thread);
  65 XBT_PUBLIC(void *) xbt_os_thread_getparam(void);
  66
  67
  68   /** \brief Thread mutex data type (opaque structure) */
  69 typedef struct xbt_os_mutex_ *xbt_os_mutex_t;
  70
  71 XBT_PUBLIC(xbt_os_mutex_t) xbt_os_mutex_init(void);
  72 XBT_PUBLIC(void) xbt_os_mutex_acquire(xbt_os_mutex_t mutex);
  73 XBT_PUBLIC(void) xbt_os_mutex_timedacquire(xbt_os_mutex_t mutex,
  74                                            double delay);
  75 XBT_PUBLIC(void) xbt_os_mutex_release(xbt_os_mutex_t mutex);
  76 XBT_PUBLIC(void) xbt_os_mutex_destroy(xbt_os_mutex_t mutex);
  77
  78 /** \brief Thread reentrant mutex data type (opaque structure) */
  79 typedef struct xbt_os_rmutex_ *xbt_os_rmutex_t;
  80
  81 XBT_PUBLIC(xbt_os_rmutex_t) xbt_os_rmutex_init(void);
  82 XBT_PUBLIC(void) xbt_os_rmutex_acquire(xbt_os_rmutex_t rmutex);
  83 XBT_PUBLIC(void) xbt_os_rmutex_release(xbt_os_rmutex_t rmutex);
  84 XBT_PUBLIC(void) xbt_os_rmutex_destroy(xbt_os_rmutex_t rmutex);
  85
  86
  87   /** \brief Thread condition data type (opaque structure) */
  88 typedef struct xbt_os_cond_ *xbt_os_cond_t;
  89
  90 XBT_PUBLIC(xbt_os_cond_t) xbt_os_cond_init(void);
  91 XBT_PUBLIC(void) xbt_os_cond_wait(xbt_os_cond_t cond,
  92                                   xbt_os_mutex_t mutex);
  93 XBT_PUBLIC(void) xbt_os_cond_timedwait(xbt_os_cond_t cond,
  94                                        xbt_os_mutex_t mutex, double delay);
  95 XBT_PUBLIC(void) xbt_os_cond_signal(xbt_os_cond_t cond);
  96 XBT_PUBLIC(void) xbt_os_cond_broadcast(xbt_os_cond_t cond);
  97 XBT_PUBLIC(void) xbt_os_cond_destroy(xbt_os_cond_t cond);
  98
  99    /** \brief Semaphore data type (opaque structure) */
 100 typedef struct xbt_os_sem_ *xbt_os_sem_t;
 101
 102 XBT_PUBLIC(xbt_os_sem_t) xbt_os_sem_init(unsigned int value);
 103 XBT_PUBLIC(void) xbt_os_sem_acquire(xbt_os_sem_t sem);
 104 XBT_PUBLIC(void) xbt_os_sem_timedacquire(xbt_os_sem_t sem, double timeout);
 105 XBT_PUBLIC(void) xbt_os_sem_release(xbt_os_sem_t sem);
 106 XBT_PUBLIC(void) xbt_os_sem_destroy(xbt_os_sem_t sem);
 107 XBT_PUBLIC(void) xbt_os_sem_get_value(xbt_os_sem_t sem, int *svalue);
 108
 109
 110 /** @} */
 111
 112 SG_END_DECL()
 113 #endif                          /* _XBT_OS_THREAD_H */