#ifndef CYGONCE_POSIX_TIME_H
#define CYGONCE_POSIX_TIME_H
/*=============================================================================
//
//      time.h
//
//      POSIX time header
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
// Software Foundation; either version 2 or (at your option) any later      
// version.                                                                 
//
// eCos is distributed in the hope that it will be useful, but WITHOUT      
// 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        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     nickg
// Contributors:  nickg, jlarmour
// Date:          2000-03-17
// Purpose:       POSIX time header
// Description:   This header contains all the definitions needed to support
//                the POSIX timer and timer API under eCos.
//              
// Usage:         Do not include this file directly - instead include <time.h>
//              
//
//####DESCRIPTIONEND####
//
//===========================================================================*/

#include <pkgconf/posix.h>
#include <cyg/infra/cyg_type.h>

/*---------------------------------------------------------------------------*/
/* Types for timers and clocks */

typedef int clockid_t;

#ifdef CYGPKG_POSIX_TIMERS
typedef int timer_t;

/* forward declaration - if the app uses it it will have to include
 * signal.h anyway
 */
struct sigevent;
#endif

/*---------------------------------------------------------------------------*/
/* Structures */

struct timespec
{
    time_t      tv_sec;
    long        tv_nsec;
};

#ifdef CYGPKG_POSIX_TIMERS
struct itimerspec
{
    struct timespec     it_interval;
    struct timespec     it_value;
};
#endif

/*---------------------------------------------------------------------------*/
/* Manifest constants */

#define CLOCK_REALTIME          0

#ifdef CYGPKG_POSIX_TIMERS
#define TIMER_ABSTIME           1
#endif

/*---------------------------------------------------------------------------*/
/* Clock functions */

/* Set the clocks current time */
__externC int clock_settime( clockid_t clock_id, const struct timespec *tp);

/* Get the clocks current time */
__externC int clock_gettime( clockid_t clock_id, struct timespec *tp);

/* Get the clocks resolution */
__externC int clock_getres( clockid_t clock_id, struct timespec *tp);


/*---------------------------------------------------------------------------*/
/* Timer functions */

#ifdef CYGPKG_POSIX_TIMERS

/* Create a timer based on the given clock. */
__externC int timer_create( clockid_t clock_id,
                            struct sigevent *evp,
                            timer_t *timer_id);

/* Delete the timer */
__externC int timer_delete( timer_t timer_id );

/* Set the expiration time of the timer. */
__externC int timer_settime( timer_t timerid, int flags,
                             const struct itimerspec *value,
                             struct itimerspec *ovalue );

/* Get current timer values */
__externC int timer_gettime( timer_t timerid, struct itimerspec *value );

/* Get number of missed triggers */
__externC int timer_getoverrun( timer_t timerid );

#endif

/*---------------------------------------------------------------------------*/
/* Nanosleep */

/* Sleep for the given time. */
__externC int nanosleep( const struct timespec *rqtp,
                         struct timespec *rmtp);


/*---------------------------------------------------------------------------*/
#endif /* ifndef CYGONCE_POSIX_TIME_H */
/* End of time.h */