src/AmigaOS/timer_amiga.cpp

/*
 *  timer_amiga.cpp - Time Manager emulation, AmigaOS specific stuff
 *
 *  Basilisk II (C) 1997-2002 Christian Bauer
 *
 *  This program 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 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <exec/types.h>
#include <devices/timer.h>
#include <proto/timer.h>
#include <proto/intuition.h>

#include "sysdeps.h"
#include "timer.h"

#define DEBUG 0
#include "debug.h"


/*
 *  Return microseconds since boot (64 bit)
 */

void Microseconds(uint32 &hi, uint32 &lo)
{
        D(bug("Microseconds\n"));
        struct timeval tv;
        GetSysTime(&tv);
        uint64 tl = (uint64)tv.tv_secs * 1000000 + tv.tv_micro;
        hi = tl >> 32;
        lo = tl;
}


/*
 *  Return local date/time in Mac format (seconds since 1.1.1904)
 */

uint32 TimerDateTime(void)
{
        ULONG secs, mics;
        CurrentTime(&secs, &mics);
        return secs + 0x8b31ef80;
}


/*
 *  Get current time
 */

void timer_current_time(tm_time_t &t)
{
        GetSysTime(&t);
}


/*
 *  Add times
 */

void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
{
        res = a;
        AddTime(&res, &b);
}


/*
 *  Subtract times
 */

void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
{
        res = a;
        SubTime(&res, &b);
}


/*
 *  Compare times (<0: a < b, =0: a = b, >0: a > b)
 */

int timer_cmp_time(tm_time_t a, tm_time_t b)
{
        return CmpTime(&b, &a);
}


/*
 *  Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
 */

void timer_mac2host_time(tm_time_t &res, int32 mactime)
{
        if (mactime > 0) {
                res.tv_secs = mactime / 1000;                   // Time in milliseconds
                res.tv_micro = (mactime % 1000) * 1000;
        } else {
                res.tv_secs = -mactime / 1000000;               // Time in negative microseconds
                res.tv_micro = -mactime % 1000000;
        }
}


/*
 *  Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
 *  A negative input value for hosttime results in a zero return value
 *  As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
 */

int32 timer_host2mac_time(tm_time_t hosttime)
{
        if (hosttime.tv_secs < 0)
                return 0;
        else {
                uint64 t = (uint64)hosttime.tv_secs * 1000000 + hosttime.tv_micro;
                if (t > 0x7fffffff)
                        return t / 1000;        // Time in milliseconds
                else
                        return -t;                      // Time in negative microseconds
        }
}
Revision:	1.7
Committed:	2002-01-15T14:58:34Z (22 years, 10 months ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-15012002
Changes since 1.6:	+1 -1 lines
Log Message:	- documentation updates - 2001 -> 2002 - version 0.9 -> 1.0
#	User	Rev	Content
1	cebix	1.1	/*
2			* timer_amiga.cpp - Time Manager emulation, AmigaOS specific stuff
3			*
4	cebix	1.7	* Basilisk II (C) 1997-2002 Christian Bauer
5	cebix	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			#include <exec/types.h>
22			#include <devices/timer.h>
23			#include <proto/timer.h>
24			#include <proto/intuition.h>
25
26			#include "sysdeps.h"
27			#include "timer.h"
28
29			#define DEBUG 0
30			#include "debug.h"
31
32
33			/*
34			* Return microseconds since boot (64 bit)
35			*/
36
37			void Microseconds(uint32 &hi, uint32 &lo)
38			{
39			D(bug("Microseconds\n"));
40			struct timeval tv;
41			GetSysTime(&tv);
42	cebix	1.3	uint64 tl = (uint64)tv.tv_secs * 1000000 + tv.tv_micro;
43			hi = tl >> 32;
44			lo = tl;
45	cebix	1.1	}
46
47
48			/*
49			* Return local date/time in Mac format (seconds since 1.1.1904)
50			*/
51
52			uint32 TimerDateTime(void)
53			{
54	cebix	1.6	ULONG secs, mics;
55	cebix	1.1	CurrentTime(&secs, &mics);
56	cebix	1.6	return secs + 0x8b31ef80;
57	cebix	1.1	}
58
59
60			/*
61			* Get current time
62			*/
63
64			void timer_current_time(tm_time_t &t)
65			{
66			GetSysTime(&t);
67			}
68
69
70			/*
71			* Add times
72			*/
73
74			void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
75			{
76			res = a;
77			AddTime(&res, &b);
78			}
79
80
81			/*
82			* Subtract times
83			*/
84
85			void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
86			{
87			res = a;
88			SubTime(&res, &b);
89			}
90
91
92			/*
93			* Compare times (<0: a < b, =0: a = b, >0: a > b)
94			*/
95
96			int timer_cmp_time(tm_time_t a, tm_time_t b)
97			{
98			return CmpTime(&b, &a);
99			}
100
101
102			/*
103			* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
104			*/
105
106			void timer_mac2host_time(tm_time_t &res, int32 mactime)
107			{
108			if (mactime > 0) {
109			res.tv_secs = mactime / 1000; // Time in milliseconds
110			res.tv_micro = (mactime % 1000) * 1000;
111			} else {
112			res.tv_secs = -mactime / 1000000; // Time in negative microseconds
113			res.tv_micro = -mactime % 1000000;
114			}
115			}
116
117
118			/*
119			* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
120			* A negative input value for hosttime results in a zero return value
121			* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
122			*/
123
124			int32 timer_host2mac_time(tm_time_t hosttime)
125			{
126			if (hosttime.tv_secs < 0)
127			return 0;
128	cebix	1.3	else {
129			uint64 t = (uint64)hosttime.tv_secs * 1000000 + hosttime.tv_micro;
130			if (t > 0x7fffffff)
131			return t / 1000; // Time in milliseconds
132			else
133			return -t; // Time in negative microseconds
134			}
135	cebix	1.1	}