| 1 |
/* |
| 2 |
* timer_unix.cpp - Time Manager emulation, Unix 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 "sysdeps.h" |
| 22 |
#include "timer.h" |
| 23 |
|
| 24 |
#define DEBUG 0 |
| 25 |
#include "debug.h" |
| 26 |
|
| 27 |
|
| 28 |
/* |
| 29 |
* Return microseconds since boot (64 bit) |
| 30 |
*/ |
| 31 |
|
| 32 |
void Microseconds(uint32 &hi, uint32 &lo) |
| 33 |
{ |
| 34 |
D(bug("Microseconds\n")); |
| 35 |
#ifdef HAVE_CLOCK_GETTIME |
| 36 |
struct timespec t; |
| 37 |
clock_gettime(CLOCK_REALTIME, &t); |
| 38 |
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000; |
| 39 |
#else |
| 40 |
struct timeval t; |
| 41 |
gettimeofday(&t, NULL); |
| 42 |
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_usec; |
| 43 |
#endif |
| 44 |
hi = tl >> 32; |
| 45 |
lo = tl; |
| 46 |
} |
| 47 |
|
| 48 |
|
| 49 |
/* |
| 50 |
* Return local date/time in Mac format (seconds since 1.1.1904) |
| 51 |
*/ |
| 52 |
|
| 53 |
const uint32 TIME_OFFSET = 0x7c25cca0; // Offset Mac->Unix time in seconds |
| 54 |
|
| 55 |
uint32 TimerDateTime(void) |
| 56 |
{ |
| 57 |
time_t uct_now = time(NULL); |
| 58 |
struct tm tm; |
| 59 |
localtime_r(&uct_now, &tm); |
| 60 |
time_t local_now = mktime(&tm); |
| 61 |
return (uint32)local_now + TIME_OFFSET; |
| 62 |
} |
| 63 |
|
| 64 |
|
| 65 |
/* |
| 66 |
* Get current time |
| 67 |
*/ |
| 68 |
|
| 69 |
void timer_current_time(tm_time_t &t) |
| 70 |
{ |
| 71 |
#ifdef HAVE_CLOCK_GETTIME |
| 72 |
clock_gettime(CLOCK_REALTIME, &t); |
| 73 |
#else |
| 74 |
gettimeofday(&t, NULL); |
| 75 |
#endif |
| 76 |
} |
| 77 |
|
| 78 |
|
| 79 |
/* |
| 80 |
* Add times |
| 81 |
*/ |
| 82 |
|
| 83 |
void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b) |
| 84 |
{ |
| 85 |
#ifdef HAVE_CLOCK_GETTIME |
| 86 |
res.tv_sec = a.tv_sec + b.tv_sec; |
| 87 |
res.tv_nsec = a.tv_nsec + b.tv_nsec; |
| 88 |
if (res.tv_nsec >= 1000000000) { |
| 89 |
res.tv_sec++; |
| 90 |
res.tv_nsec -= 1000000000; |
| 91 |
} |
| 92 |
#else |
| 93 |
res.tv_sec = a.tv_sec + b.tv_sec; |
| 94 |
res.tv_usec = a.tv_usec + b.tv_usec; |
| 95 |
if (res.tv_usec >= 1000000) { |
| 96 |
res.tv_sec++; |
| 97 |
res.tv_usec -= 1000000; |
| 98 |
} |
| 99 |
#endif |
| 100 |
} |
| 101 |
|
| 102 |
|
| 103 |
/* |
| 104 |
* Subtract times |
| 105 |
*/ |
| 106 |
|
| 107 |
void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b) |
| 108 |
{ |
| 109 |
#ifdef HAVE_CLOCK_GETTIME |
| 110 |
res.tv_sec = a.tv_sec - b.tv_sec; |
| 111 |
res.tv_nsec = a.tv_nsec - b.tv_nsec; |
| 112 |
if (res.tv_nsec < 0) { |
| 113 |
res.tv_sec--; |
| 114 |
res.tv_nsec += 1000000000; |
| 115 |
} |
| 116 |
#else |
| 117 |
res.tv_sec = a.tv_sec - b.tv_sec; |
| 118 |
res.tv_usec = a.tv_usec - b.tv_usec; |
| 119 |
if (res.tv_usec < 0) { |
| 120 |
res.tv_sec--; |
| 121 |
res.tv_usec += 1000000; |
| 122 |
} |
| 123 |
#endif |
| 124 |
} |
| 125 |
|
| 126 |
|
| 127 |
/* |
| 128 |
* Compare times (<0: a < b, =0: a = b, >0: a > b) |
| 129 |
*/ |
| 130 |
|
| 131 |
int timer_cmp_time(tm_time_t a, tm_time_t b) |
| 132 |
{ |
| 133 |
#ifdef HAVE_CLOCK_GETTIME |
| 134 |
if (a.tv_sec == b.tv_sec) |
| 135 |
return a.tv_nsec - b.tv_nsec; |
| 136 |
else |
| 137 |
return a.tv_sec - b.tv_sec; |
| 138 |
#else |
| 139 |
if (a.tv_sec == b.tv_sec) |
| 140 |
return a.tv_usec - b.tv_usec; |
| 141 |
else |
| 142 |
return a.tv_sec - b.tv_sec; |
| 143 |
#endif |
| 144 |
} |
| 145 |
|
| 146 |
|
| 147 |
/* |
| 148 |
* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t |
| 149 |
*/ |
| 150 |
|
| 151 |
void timer_mac2host_time(tm_time_t &res, int32 mactime) |
| 152 |
{ |
| 153 |
#ifdef HAVE_CLOCK_GETTIME |
| 154 |
if (mactime > 0) { |
| 155 |
// Time in milliseconds |
| 156 |
res.tv_sec = mactime / 1000; |
| 157 |
res.tv_nsec = (mactime % 1000) * 1000000; |
| 158 |
} else { |
| 159 |
// Time in negative microseconds |
| 160 |
res.tv_sec = -mactime / 1000000; |
| 161 |
res.tv_nsec = (-mactime % 1000000) * 1000; |
| 162 |
} |
| 163 |
#else |
| 164 |
if (mactime > 0) { |
| 165 |
// Time in milliseconds |
| 166 |
res.tv_sec = mactime / 1000; |
| 167 |
res.tv_usec = (mactime % 1000) * 1000; |
| 168 |
} else { |
| 169 |
// Time in negative microseconds |
| 170 |
res.tv_sec = -mactime / 1000000; |
| 171 |
res.tv_usec = -mactime % 1000000; |
| 172 |
} |
| 173 |
#endif |
| 174 |
} |
| 175 |
|
| 176 |
|
| 177 |
/* |
| 178 |
* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds) |
| 179 |
* A negative input value for hosttime results in a zero return value |
| 180 |
* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds! |
| 181 |
*/ |
| 182 |
|
| 183 |
int32 timer_host2mac_time(tm_time_t hosttime) |
| 184 |
{ |
| 185 |
if (hosttime.tv_sec < 0) |
| 186 |
return 0; |
| 187 |
else { |
| 188 |
#ifdef HAVE_CLOCK_GETTIME |
| 189 |
uint64 t = (uint64)hosttime.tv_sec * 1000000 + hosttime.tv_nsec / 1000; |
| 190 |
#else |
| 191 |
uint64 t = (uint64)hosttime.tv_sec * 1000000 + hosttime.tv_usec; |
| 192 |
#endif |
| 193 |
if (t > 0x7fffffff) |
| 194 |
return t / 1000; // Time in milliseconds |
| 195 |
else |
| 196 |
return -t; // Time in negative microseconds |
| 197 |
} |
| 198 |
} |
