src/BeOS/timer_beos.cpp

/*
 *  timer_beos.cpp - Time Manager emulation, BeOS specific stuff
 *
 *  Basilisk II (C) 1997-1999 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 "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)
 */

const uint32 TIME_OFFSET = 0x7c25b080;  // Offset Mac->BeOS time in seconds

uint32 TimerDateTime(void)
{
        time_t uct_now = time(NULL);
        long tz = timezone;
        time_t local_now = uct_now - tz;
        if (daylight)
                local_now += 3600;
        return (uint32)local_now + TIME_OFFSET;
}


/*
 *  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:	1.2
Committed:	1999-10-14T16:05:17Z (25 years, 1 month ago) by cebix
Branch:	MAIN
Changes since 1.1:	+5 -4 lines
Log Message:	- corrected time zone handling in TimerDateTime()
#	User	Rev	Content
1	cebix	1.1	/*
2			* timer_beos.cpp - Time Manager emulation, BeOS specific stuff
3			*
4			* Basilisk II (C) 1997-1999 Christian Bauer
5			*
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			#include "timer.h"
25
26			#define DEBUG 0
27			#include "debug.h"
28
29
30			/*
31			* Return microseconds since boot (64 bit)
32			*/
33
34			void Microseconds(uint32 &hi, uint32 &lo)
35			{
36			D(bug("Microseconds\n"));
37			bigtime_t time = system_time();
38			hi = time >> 32;
39			lo = time;
40			}
41
42
43			/*
44			* Return local date/time in Mac format (seconds since 1.1.1904)
45			*/
46
47	cebix	1.2	const uint32 TIME_OFFSET = 0x7c25b080; // Offset Mac->BeOS time in seconds
48	cebix	1.1
49			uint32 TimerDateTime(void)
50			{
51			time_t uct_now = time(NULL);
52	cebix	1.2	long tz = timezone;
53			time_t local_now = uct_now - tz;
54			if (daylight)
55			local_now += 3600;
56	cebix	1.1	return (uint32)local_now + TIME_OFFSET;
57			}
58
59
60			/*
61			* Get current time
62			*/
63
64			void timer_current_time(tm_time_t &t)
65			{
66			t = system_time();
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 + b;
77			}
78
79
80			/*
81			* Subtract times
82			*/
83
84			void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
85			{
86			res = a - b;
87			}
88
89
90			/*
91			* Compare times (<0: a < b, =0: a = b, >0: a > b)
92			*/
93
94			int timer_cmp_time(tm_time_t a, tm_time_t b)
95			{
96			tm_time_t r = a - b;
97			return r < 0 ? -1 : (r > 0 ? 1 : 0);
98			}
99
100
101			/*
102			* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
103			*/
104
105			void timer_mac2host_time(tm_time_t &res, int32 mactime)
106			{
107			if (mactime > 0)
108			res = mactime * 1000; // Time in milliseconds
109			else
110			res = -mactime; // Time in negative microseconds
111			}
112
113
114			/*
115			* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
116			* A negative input value for hosttime results in a zero return value
117			* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
118			*/
119
120			int32 timer_host2mac_time(tm_time_t hosttime)
121			{
122			if (hosttime < 0)
123			return 0;
124			else if (hosttime > 0x7fffffff)
125			return hosttime / 1000; // Time in milliseconds
126			else
127			return -hosttime; // Time in negative microseconds
128			}