/*
Copyright (c) 1993 Xerox Corporation.  All rights reserved.
*/
/*
$Id$

$Date$
 *
 * Basic public type definitions for PCR threads
 *
 */


#ifndef	__PCR_ThTypes_h
#define __PCR_ThTypes_h 1

#include <config/PCR_Arch.h>
#include <config/PCR_StdTypes.h>
#include <sig/PCR_SigTypes.h>


/*
 * Threads are heap objects and completely opaque.
 */

#define PCR_Th_T struct PCR_Th_TRep
typedef PCR_Th_T * PCR_Th_TPtr;

/*
 * Monitor Locks
 *
 * MLs are opaque but clients may allocate and initialize them.
 */

#   if PCR_Arch_STD_SIZES
        struct PCR_Th_MLRep {
            long mlrep_opaque[2];
        };
#   else
#       error define ML for this architecture
#   endif

typedef volatile struct PCR_Th_MLRep PCR_Th_ML;

#define PCR_Th_ML_null { 0 }


/*
 * Condition variables
 *
 * CVs are opaque but clients may allocate and initialize them.
 */

#   if PCR_Arch_STD_SIZES
        struct PCR_Th_CVRep {
            long cvrep_opaque[2];
        };
#   else
#       error define ML for this architecture
#   endif


typedef volatile struct PCR_Th_CVRep PCR_Th_CV;

#define PCR_Th_CV_null { 0 }

/*
 * Priority
 *
 * Client priorities must lie between userBackground and userForeground.
 */

typedef unsigned PCR_Th_Pri;

#define PCR_Th_Pri__stopped	((PCR_Th_Pri)(0))
#define PCR_Th_Pri_stopped	PCR_Th_Pri__stopped

#define PCR_Th_Pri__idle	((PCR_Th_Pri)(1))
#define PCR_Th_Pri_idle		PCR_Th_Pri__idle

#endif /* ! __PCR_Th_h */

/*
$Log$
*/