compiler/include/exec/semaphores.h

   1 #ifndef EXEC_SEMAPHORES_H
   2 #define EXEC_SEMAPHORES_H
   3
   4 /*
   5     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: Semaphore handling
   9     Lang: english
  10 */
  11
  12 #ifndef EXEC_LISTS_H
  13 #    include <exec/lists.h>
  14 #endif
  15
  16 #ifndef EXEC_NODES_H
  17 #    include <exec/nodes.h>
  18 #endif
  19
  20 #ifndef EXEC_PORTS_H
  21 #    include <exec/ports.h>
  22 #endif
  23
  24 #ifndef EXEC_TASKS_H
  25 #    include <exec/tasks.h>
  26 #endif
  27
  28
  29                            /* Signal Semaphores */
  30
  31 /* Private structure for use in ObtainSemaphore */
  32 struct SemaphoreRequest
  33 {
  34     struct MinNode sr_Link;
  35     struct Task  * sr_Waiter;
  36 };
  37
  38 struct SignalSemaphore
  39 {
  40     struct Node             ss_Link;
  41     WORD                    ss_NestCount;
  42     struct MinList          ss_WaitQueue;
  43     struct SemaphoreRequest ss_MultipleLink;
  44     struct Task           * ss_Owner;
  45     WORD                    ss_QueueCount;
  46 };
  47
  48 /* For use in Procure()/Vacate() */
  49 struct SemaphoreMessage
  50 {
  51     struct Message           ssm_Message;
  52     struct SignalSemaphore * ssm_Semaphore;
  53 };
  54
  55 #define SM_EXCLUSIVE (0L)
  56 #define SM_SHARED    (1L)
  57
  58 #endif /* EXEC_SEMAPHORES_H */