src/BeOS/timer_beos.cpp

/*
 *  timer_beos.cpp - Time Manager emulation, BeOS specific stuff
 *
 *  Basilisk II (C) 1997-2008 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"


// From main_beos.cpp
extern thread_id emul_thread;


/*
 *  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
}


/*
 *  Delay by specified number of microseconds (<1 second)
 */

void Delay_usec(uint32 usec)
{
        snooze(usec);
}


/*
 *  Suspend emulator thread, virtual CPU in idle mode
 */

void idle_wait(void)
{
#if 0
        /*
          FIXME: add a semaphore (counter) to avoid a B_BAD_THREAD_STATE
          return if we call idle_resume() when thread is not suspended?

          Sorry, I can't test -- gb.
         */
        suspend_thread(emul_thread);
#endif
}


/*
 *  Resume execution of emulator thread, events just arrived
 */

void idle_resume(void)
{
#if 0
        resume_thread(emul_thread);
#endif
}
Revision:	1.14
Committed:	2008-01-01T09:40:32Z (16 years, 8 months ago) by gbeauche
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.13:	+1 -1 lines
Log Message:	Happy New Year!
#	User	Rev	Content
1	cebix	1.1	/*
2			* timer_beos.cpp - Time Manager emulation, BeOS specific stuff
3			*
4	gbeauche	1.14	* Basilisk II (C) 1997-2008 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	gbeauche	1.13	// From main_beos.cpp
32			extern thread_id emul_thread;
33
34
35	cebix	1.1	/*
36			* Return microseconds since boot (64 bit)
37			*/
38
39			void Microseconds(uint32 &hi, uint32 &lo)
40			{
41			D(bug("Microseconds\n"));
42			bigtime_t time = system_time();
43			hi = time >> 32;
44			lo = time;
45			}
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	1.7	return TimeToMacTime(time(NULL));
55	cebix	1.1	}
56
57
58			/*
59			* Get current time
60			*/
61
62			void timer_current_time(tm_time_t &t)
63			{
64			t = system_time();
65			}
66
67
68			/*
69			* Add times
70			*/
71
72			void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
73			{
74			res = a + b;
75			}
76
77
78			/*
79			* Subtract times
80			*/
81
82			void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
83			{
84			res = a - b;
85			}
86
87
88			/*
89			* Compare times (<0: a < b, =0: a = b, >0: a > b)
90			*/
91
92			int timer_cmp_time(tm_time_t a, tm_time_t b)
93			{
94			tm_time_t r = a - b;
95			return r < 0 ? -1 : (r > 0 ? 1 : 0);
96			}
97
98
99			/*
100			* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
101			*/
102
103			void timer_mac2host_time(tm_time_t &res, int32 mactime)
104			{
105			if (mactime > 0)
106			res = mactime * 1000; // Time in milliseconds
107			else
108			res = -mactime; // Time in negative microseconds
109			}
110
111
112			/*
113			* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
114			* A negative input value for hosttime results in a zero return value
115			* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
116			*/
117
118			int32 timer_host2mac_time(tm_time_t hosttime)
119			{
120			if (hosttime < 0)
121			return 0;
122			else if (hosttime > 0x7fffffff)
123			return hosttime / 1000; // Time in milliseconds
124			else
125			return -hosttime; // Time in negative microseconds
126			}
127	gbeauche	1.10
128
129			/*
130			* Delay by specified number of microseconds (<1 second)
131			*/
132
133			void Delay_usec(uint32 usec)
134			{
135			snooze(usec);
136			}
137	gbeauche	1.12
138
139			/*
140			* Suspend emulator thread, virtual CPU in idle mode
141			*/
142
143			void idle_wait(void)
144			{
145	gbeauche	1.13	#if 0
146			/*
147			FIXME: add a semaphore (counter) to avoid a B_BAD_THREAD_STATE
148			return if we call idle_resume() when thread is not suspended?
149
150			Sorry, I can't test -- gb.
151			*/
152			suspend_thread(emul_thread);
153			#endif
154	gbeauche	1.12	}
155
156
157			/*
158			* Resume execution of emulator thread, events just arrived
159			*/
160
161			void idle_resume(void)
162			{
163	gbeauche	1.13	#if 0
164			resume_thread(emul_thread);
165			#endif
166	gbeauche	1.12	}