+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- I N T E R F A C E S . O S 2 L I B . S Y N C H R O N I Z A T I O N --
--- --
--- S p e c --
--- --
--- $Revision: 1.1.16.2 $
--- --
--- Copyright (C) 1993-1998 Free Software Foundation, Inc. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-with Interfaces.OS2Lib.Threads;
-
-package Interfaces.OS2Lib.Synchronization is
-pragma Preelaborate (Synchronization);
-
- package IC renames Interfaces.C;
- package IOT renames Interfaces.OS2Lib.Threads;
- package S renames System;
-
- -- Semaphore Attributes
-
- DC_SEM_SHARED : constant := 16#01#;
- -- DosCreateMutex, DosCreateEvent, and DosCreateMuxWait use it to indicate
- -- whether the semaphore is shared or private when the PSZ is null
-
- SEM_INDEFINITE_WAIT : constant ULONG := -1;
- SEM_IMMEDIATE_RETURN : constant ULONG := 0;
-
- type HSEM is new LHANDLE;
- type PHSEM is access all HSEM;
-
- type SEMRECORD is record
- hsemCur : HSEM;
- ulUser : ULONG;
- end record;
-
- type PSEMRECORD is access all SEMRECORD;
-
- -- Quad word structure
-
- -- Originally QWORD is defined as a record containing two ULONGS,
- -- the first containing low word and the second for the high word,
- -- but it is cleaner to define it as follows:
-
- type QWORD is delta 1.0 range -2.0**63 .. 2.0**63 - 1.0;
- type PQWORD is access all QWORD;
-
- type HEV is new HSEM;
- type PHEV is access all HEV;
-
- type HMTX is new HSEM;
- type PHMTX is access all HMTX;
-
- type HMUX is new HSEM;
- type PHMUX is access all HMUX;
-
- type HTIMER is new LHANDLE;
- type PHTIMER is access all HTIMER;
-
- -----------------------
- -- Critical sections --
- -----------------------
-
- function DosEnterCritSec return APIRET;
- pragma Import (C, DosEnterCritSec, "DosEnterCritSec");
-
- function DosExitCritSec return APIRET;
- pragma Import (C, DosExitCritSec, "DosExitCritSec");
-
- --------------
- -- EventSem --
- --------------
-
- function DosCreateEventSem
- (pszName : PSZ;
- f_phev : PHEV;
- flAttr : ULONG;
- fState : BOOL32)
- return APIRET;
- pragma Import (C, DosCreateEventSem, "DosCreateEventSem");
-
- function DosOpenEventSem
- (pszName : PSZ;
- F_phev : PHEV)
- return APIRET;
- pragma Import (C, DosOpenEventSem, "DosOpenEventSem");
-
- function DosCloseEventSem
- (F_hev : HEV)
- return APIRET;
- pragma Import (C, DosCloseEventSem, "DosCloseEventSem");
-
- function DosResetEventSem
- (F_hev : HEV;
- pulPostCt : PULONG)
- return APIRET;
- pragma Import (C, DosResetEventSem, "DosResetEventSem");
-
- function DosPostEventSem
- (F_hev : HEV)
- return APIRET;
- pragma Import (C, DosPostEventSem, "DosPostEventSem");
-
- function DosWaitEventSem
- (F_hev : HEV;
- ulTimeout : ULONG)
- return APIRET;
- pragma Import (C, DosWaitEventSem, "DosWaitEventSem");
-
- function DosQueryEventSem
- (F_hev : HEV;
- pulPostCt : PULONG)
- return APIRET;
- pragma Import (C, DosQueryEventSem, "DosQueryEventSem");
-
- --------------
- -- MutexSem --
- --------------
-
- function DosCreateMutexSem
- (pszName : PSZ;
- F_phmtx : PHMTX;
- flAttr : ULONG;
- fState : BOOL32)
- return APIRET;
- pragma Import (C, DosCreateMutexSem, "DosCreateMutexSem");
-
- function DosOpenMutexSem
- (pszName : PSZ;
- F_phmtx : PHMTX)
- return APIRET;
- pragma Import (C, DosOpenMutexSem, "DosOpenMutexSem");
-
- function DosCloseMutexSem
- (F_hmtx : HMTX)
- return APIRET;
- pragma Import (C, DosCloseMutexSem, "DosCloseMutexSem");
-
- function DosRequestMutexSem
- (F_hmtx : HMTX;
- ulTimeout : ULONG)
- return APIRET;
- pragma Import (C, DosRequestMutexSem, "DosRequestMutexSem");
-
- function DosReleaseMutexSem
- (F_hmtx : HMTX)
- return APIRET;
- pragma Import (C, DosReleaseMutexSem, "DosReleaseMutexSem");
-
- function DosQueryMutexSem
- (F_hmtx : HMTX;
- F_ppid : IOT.PPID;
- F_ptid : IOT.PTID;
- pulCount : PULONG)
- return APIRET;
- pragma Import (C, DosQueryMutexSem, "DosQueryMutexSem");
-
- ----------------
- -- MuxWaitSem --
- ----------------
-
- function DosCreateMuxWaitSem
- (pszName : PSZ;
- F_phmux : PHMUX;
- cSemRec : ULONG;
- pSemRec : PSEMRECORD;
- flAttr : ULONG)
- return APIRET;
- pragma Import (C, DosCreateMuxWaitSem, "DosCreateMuxWaitSem");
-
- DCMW_WAIT_ANY : constant := 16#02#; -- wait on any event/mutex to occur
- DCMW_WAIT_ALL : constant := 16#04#; -- wait on all events/mutexes to occur
- -- Values for "flAttr" parameter in DosCreateMuxWaitSem call
-
- function DosOpenMuxWaitSem
- (pszName : PSZ;
- F_phmux : PHMUX)
- return APIRET;
- pragma Import (C, DosOpenMuxWaitSem, "DosOpenMuxWaitSem");
-
- function DosCloseMuxWaitSem
- (F_hmux : HMUX)
- return APIRET;
- pragma Import (C, DosCloseMuxWaitSem, "DosCloseMuxWaitSem");
-
- function DosWaitMuxWaitSem
- (F_hmux : HMUX;
- ulTimeout : ULONG;
- pulUser : PULONG)
- return APIRET;
- pragma Import (C, DosWaitMuxWaitSem, "DosWaitMuxWaitSem");
-
- function DosAddMuxWaitSem
- (F_hmux : HMUX;
- pSemRec : PSEMRECORD)
- return APIRET;
- pragma Import (C, DosAddMuxWaitSem, "DosAddMuxWaitSem");
-
- function DosDeleteMuxWaitSem
- (F_hmux : HMUX;
- F_hsem : HSEM)
- return APIRET;
- pragma Import (C, DosDeleteMuxWaitSem, "DosDeleteMuxWaitSem");
-
- function DosQueryMuxWaitSem
- (F_hmux : HMUX;
- pcSemRec : PULONG;
- pSemRec : PSEMRECORD;
- pflAttr : PULONG)
- return APIRET;
- pragma Import (C, DosQueryMuxWaitSem, "DosQueryMuxWaitSem");
-
- -----------
- -- Timer --
- -----------
-
- function DosAsyncTimer
- (msec : ULONG;
- F_hsem : HSEM;
- F_phtimer : PHTIMER)
- return APIRET;
- pragma Import (C, DosAsyncTimer, "DosAsyncTimer");
-
- function DosStartTimer
- (msec : ULONG;
- F_hsem : HSEM;
- F_phtimer : PHTIMER)
- return APIRET;
- pragma Import (C, DosStartTimer, "DosStartTimer");
-
- function DosStopTimer
- (F_htimer : HTIMER)
- return APIRET;
- pragma Import (C, DosStopTimer, "DosStopTimer");
-
- -- DosTmrQueryTime provides a snapshot of the time
- -- from the IRQ0 high resolution timer (Intel 8254)
-
- function DosTmrQueryTime
- (pqwTmrTime : access QWORD) -- Time in 8254 ticks (1_192_755.2 Hz)
- return APIRET;
- pragma Import (C, DosTmrQueryTime, "DosTmrQueryTime");
-
-end Interfaces.OS2Lib.Synchronization;
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