compiler/include/exec/semaphores.h

   1 #ifndef EXEC_SEMAPHORES_H
   2 #define EXEC_SEMAPHORES_H
   3
   4 /*
   5     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: Semaphore handling
   9     Lang: english
  10 */
  11
  12 #include <aros/config.h>
  13
  14 #ifndef EXEC_LISTS_H
  15 #    include <exec/lists.h>
  16 #endif
  17
  18 #ifndef EXEC_NODES_H
  19 #    include <exec/nodes.h>
  20 #endif
  21
  22 #ifndef EXEC_PORTS_H
  23 #    include <exec/ports.h>
  24 #endif
  25
  26 #ifndef EXEC_TASKS_H
  27 #    include <exec/tasks.h>
  28 #endif
  29
  30 #if defined(__AROSEXEC_SMP__)
  31 #include <aros/types/spinlock_s.h>
  32 #endif
  33
  34                            /* Signal Semaphores */
  35
  36 /* Private structure for use in ObtainSemaphore */
  37 struct SemaphoreRequest
  38 {
  39     struct MinNode              sr_Link;
  40     struct Task                 *sr_Waiter;
  41 #if defined(__AROSPLATFORM_SMP__)
  42 #if defined(__AROSEXEC_SMP__)
  43     spinlock_t                  sr_SpinLock;
  44 #else
  45     spinlock_t                  sr_Pad;
  46 #endif
  47 #endif
  48 };
  49
  50 struct SignalSemaphore
  51 {
  52     struct Node                 ss_Link;
  53     WORD                        ss_NestCount;
  54     struct MinList              ss_WaitQueue;
  55     struct SemaphoreRequest     ss_MultipleLink;
  56     struct Task                 *ss_Owner;
  57     WORD                        ss_QueueCount;
  58 };
  59
  60 /* For use in Procure()/Vacate() */
  61 struct SemaphoreMessage
  62 {
  63     struct Message              ssm_Message;
  64     struct SignalSemaphore      *ssm_Semaphore;
  65 };
  66
  67 #define SM_EXCLUSIVE (0L)
  68 #define SM_SHARED    (1L)
  69
  70 #endif /* EXEC_SEMAPHORES_H */