headers/private/kernel/wait_for_objects.h

   1 /*
   2  * Copyright 2007, Ingo Weinhold, bonefish@cs.tu-berlin.de. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #ifndef _KERNEL_WAIT_FOR_OBJECTS_H
   7 #define _KERNEL_WAIT_FOR_OBJECTS_H
   8
   9 #include <OS.h>
  10
  11 #include <lock.h>
  12
  13
  14 struct select_sync;
  15
  16
  17 typedef struct select_info {
  18         struct select_info*     next;                           // next in the object's list
  19         struct select_sync*     sync;
  20         int32                           events;
  21         uint16                          selected_events;
  22 } select_info;
  23
  24 typedef struct select_sync {
  25         int32                           ref_count;
  26         sem_id                          sem;
  27         uint32                          count;
  28         struct select_info*     set;
  29 } select_sync;
  30
  31 #define SELECT_FLAG(type) (1L << (type - 1))
  32
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38
  39 extern void             put_select_sync(select_sync* sync);
  40 extern status_t notify_select_events(select_info* info, uint16 events);
  41 extern void             notify_select_events_list(select_info* list, uint16 events);
  42
  43 extern ssize_t  _user_wait_for_objects(object_wait_info* userInfos,
  44                                         int numInfos, uint32 flags, bigtime_t timeout);
  45
  46
  47 #ifdef __cplusplus
  48 }
  49 #endif
  50
  51 #endif  // _KERNEL_WAIT_FOR_OBJECTS_H