| 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 |
const uint32 TIME_OFFSET = 0x7c25cca0; // Offset Mac->BeOS time in seconds |
| 48 |
|
| 49 |
uint32 TimerDateTime(void) |
| 50 |
{ |
| 51 |
time_t uct_now = time(NULL); |
| 52 |
struct tm tm; |
| 53 |
localtime_r(&uct_now, &tm); |
| 54 |
time_t local_now = mktime(&tm); |
| 55 |
return (uint32)local_now + TIME_OFFSET; |
| 56 |
} |
| 57 |
|
| 58 |
|
| 59 |
/* |
| 60 |
* Get current time |
| 61 |
*/ |
| 62 |
|
| 63 |
void timer_current_time(tm_time_t &t) |
| 64 |
{ |
| 65 |
t = system_time(); |
| 66 |
} |
| 67 |
|
| 68 |
|
| 69 |
/* |
| 70 |
* Add times |
| 71 |
*/ |
| 72 |
|
| 73 |
void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b) |
| 74 |
{ |
| 75 |
res = a + b; |
| 76 |
} |
| 77 |
|
| 78 |
|
| 79 |
/* |
| 80 |
* Subtract times |
| 81 |
*/ |
| 82 |
|
| 83 |
void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b) |
| 84 |
{ |
| 85 |
res = a - b; |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
/* |
| 90 |
* Compare times (<0: a < b, =0: a = b, >0: a > b) |
| 91 |
*/ |
| 92 |
|
| 93 |
int timer_cmp_time(tm_time_t a, tm_time_t b) |
| 94 |
{ |
| 95 |
tm_time_t r = a - b; |
| 96 |
return r < 0 ? -1 : (r > 0 ? 1 : 0); |
| 97 |
} |
| 98 |
|
| 99 |
|
| 100 |
/* |
| 101 |
* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t |
| 102 |
*/ |
| 103 |
|
| 104 |
void timer_mac2host_time(tm_time_t &res, int32 mactime) |
| 105 |
{ |
| 106 |
if (mactime > 0) |
| 107 |
res = mactime * 1000; // Time in milliseconds |
| 108 |
else |
| 109 |
res = -mactime; // Time in negative microseconds |
| 110 |
} |
| 111 |
|
| 112 |
|
| 113 |
/* |
| 114 |
* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds) |
| 115 |
* A negative input value for hosttime results in a zero return value |
| 116 |
* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds! |
| 117 |
*/ |
| 118 |
|
| 119 |
int32 timer_host2mac_time(tm_time_t hosttime) |
| 120 |
{ |
| 121 |
if (hosttime < 0) |
| 122 |
return 0; |
| 123 |
else if (hosttime > 0x7fffffff) |
| 124 |
return hosttime / 1000; // Time in milliseconds |
| 125 |
else |
| 126 |
return -hosttime; // Time in negative microseconds |
| 127 |
} |
