src/BeOS/timer_beos.cpp

/*
 *  timer_beos.cpp - Time Manager emulation, BeOS 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 <KernelKit.h>

#include "sysdeps.h"
#include "macos_util.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"));
        bigtime_t time = system_time();
        hi = time >> 32;
        lo = time;
}


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

uint32 TimerDateTime(void)
{
        return TimeToMacTime(time(NULL));
}


/*
 *  Get current time
 */

void timer_current_time(tm_time_t &t)
{
        t = system_time();
}


/*
 *  Add times
 */

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


/*
 *  Subtract times
 */

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


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

int timer_cmp_time(tm_time_t a, tm_time_t b)
{
        tm_time_t r = a - b;
        return r < 0 ? -1 : (r > 0 ? 1 : 0);
}


/*
 *  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 = mactime * 1000;   // Time in milliseconds
        else
                res = -mactime;                 // Time in negative microseconds
}


/*
 *  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 < 0)
                return 0;
        else if (hosttime > 0x7fffffff)
                return hosttime / 1000; // Time in milliseconds
        else
                return -hosttime;               // Time in negative microseconds
}
Revision:	1.8
Committed:	2002-01-15T14:58:35Z (22 years, 10 months ago) by cebix
Branch:	MAIN
CVS Tags:	nigel-build-12, nigel-build-13, snapshot-15012002
Changes since 1.7:	+1 -1 lines
Log Message:	- documentation updates - 2001 -> 2002 - version 0.9 -> 1.0
#	User	Rev	Content
1	cebix	1.1	/*
2			* timer_beos.cpp - Time Manager emulation, BeOS specific stuff
3			*
4	cebix	1.8	* 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 <KernelKit.h>
22
23			#include "sysdeps.h"
24	cebix	1.7	#include "macos_util.h"
25	cebix	1.1	#include "timer.h"
26
27			#define DEBUG 0
28			#include "debug.h"
29
30
31			/*
32			* Return microseconds since boot (64 bit)
33			*/
34
35			void Microseconds(uint32 &hi, uint32 &lo)
36			{
37			D(bug("Microseconds\n"));
38			bigtime_t time = system_time();
39			hi = time >> 32;
40			lo = time;
41			}
42
43
44			/*
45			* Return local date/time in Mac format (seconds since 1.1.1904)
46			*/
47
48			uint32 TimerDateTime(void)
49			{
50	cebix	1.7	return TimeToMacTime(time(NULL));
51	cebix	1.1	}
52
53
54			/*
55			* Get current time
56			*/
57
58			void timer_current_time(tm_time_t &t)
59			{
60			t = system_time();
61			}
62
63
64			/*
65			* Add times
66			*/
67
68			void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
69			{
70			res = a + b;
71			}
72
73
74			/*
75			* Subtract times
76			*/
77
78			void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
79			{
80			res = a - b;
81			}
82
83
84			/*
85			* Compare times (<0: a < b, =0: a = b, >0: a > b)
86			*/
87
88			int timer_cmp_time(tm_time_t a, tm_time_t b)
89			{
90			tm_time_t r = a - b;
91			return r < 0 ? -1 : (r > 0 ? 1 : 0);
92			}
93
94
95			/*
96			* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
97			*/
98
99			void timer_mac2host_time(tm_time_t &res, int32 mactime)
100			{
101			if (mactime > 0)
102			res = mactime * 1000; // Time in milliseconds
103			else
104			res = -mactime; // Time in negative microseconds
105			}
106
107
108			/*
109			* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
110			* A negative input value for hosttime results in a zero return value
111			* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
112			*/
113
114			int32 timer_host2mac_time(tm_time_t hosttime)
115			{
116			if (hosttime < 0)
117			return 0;
118			else if (hosttime > 0x7fffffff)
119			return hosttime / 1000; // Time in milliseconds
120			else
121			return -hosttime; // Time in negative microseconds
122			}