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Aminet 2
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Aminet AMIGA CDROM (1994)(Walnut Creek)[Feb 1994][W.O. 44790-1].iso
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comm
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xprz31.lha
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XprZmodem
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GetSysTime.c
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C/C++ Source or Header
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1993-08-13
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3KB
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87 lines
/**********************************************************************
* Amiga-type replacement for standard Unix time() function. Can't use
* Lattice's time() function from within a library because it's not
* reentrant (has some hidden static vars it sets) and because it wants
* you to have opened dos.library for some reason, which is supposedly
* a bad idea inside a library. Oh, well... this is quite a bit
* smaller & faster anyway. B-)
**********************************************************************/
#include "xprzmodem_all.h"
/*
* # seconds between 1-1-70 (Unix time base) and 1-1-78 (Amiga time base).
* Add this value to the returned seconds count to convert Amiga system time
* to normal Unix system time.
*/
ULONG UnixTimeOffset = 252482400;
/**********************************************************
* ULONG getsystime(struct timeval *tv)
*
* This function was rewritten using DateStamp() to
* eliminate the opening and closing of the timer.device
* that was occurring everytime this function was called.
* An attempt to save some processing time. -WMP-
**********************************************************/
ULONG
getsystime (struct timeval *tv)
{
struct DateStamp ds;
ULONG secs;
DateStamp (&ds);
secs = (ds.ds_Days * 86400) + (ds.ds_Minute * 60)
+ (ds.ds_Tick / TICKS_PER_SECOND);
if (tv)
{
tv->tv_secs = secs;
tv->tv_micro = 0; /* Not Used. */
}
return secs;
} /* End of ULONG getsystime() */
/**********************************************************
* ULONG getsystime(struct timeval *tv)
*
* This is the old function and is commented out.
**********************************************************
*
* Returns current system time in standard Amiga-style timeval
* structure, if you pass a pointer to one. Also returns the
* seconds part as the return value. This lets you get just
* the seconds by calling getsystime(NULL) if that's all you
* want, or the full timeval struct if you need that. This
* is very similar to how the standard time() function is used.
*
**********************************************************
ULONG getsystime(struct timeval *tv)
{
struct timerequest tr;
/*
* timer.device must be working or the system would've died, so let's
* not bother with error checking.
*
memset(&tr, 0, sizeof(tr));
OpenDevice(TIMERNAME, UNIT_VBLANK, (struct IORequest *) &tr, 0L);
tr.tr_node.io_Message.mn_Node.ln_Type = NT_MESSAGE;
tr.tr_node.io_Command = TR_GETSYSTIME;
DoIO((struct IORequest *) &tr);
if (tv)
*tv = tr.tr_time;
CloseDevice((struct IORequest *) &tr);
return tr.tr_time.tv_secs;
} /* End of ULONG getsystime() */
/* End of getsystime.c source */