altos/scheme: Support scheme subsetting via feature settings
[fw/altos] / src / scheme / tiny-test / ao_scheme_os.h
1 /*
2  * Copyright © 2016 Keith Packard <keithp@keithp.com>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 2 of the License.
7  *
8  * This program is distributed in the hope that it will be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11  * General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License along
14  * with this program; if not, write to the Free Software Foundation, Inc.,
15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
16  */
17
18 #ifndef _AO_SCHEME_OS_H_
19 #define _AO_SCHEME_OS_H_
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <time.h>
24
25 #undef AO_SCHEME_FEATURE_FLOAT
26 #undef AO_SCHEME_FEATURE_VECTOR
27 #undef AO_SCHEME_FEATURE_QUASI
28 #undef AO_SCHEME_FEATURE_BIGINT
29
30 #define AO_SCHEME_POOL_TOTAL    4096
31 #define AO_SCHEME_SAVE          1
32
33 extern int ao_scheme_getc(void);
34
35 static inline void
36 ao_scheme_os_flush() {
37         fflush(stdout);
38 }
39
40 static inline void
41 ao_scheme_abort(void)
42 {
43         abort();
44 }
45
46 static inline void
47 ao_scheme_os_led(int led)
48 {
49         printf("leds set to 0x%x\n", led);
50 }
51
52 #define AO_SCHEME_JIFFIES_PER_SECOND    100
53
54 static inline void
55 ao_scheme_os_delay(int jiffies)
56 {
57         struct timespec ts = {
58                 .tv_sec = jiffies / AO_SCHEME_JIFFIES_PER_SECOND,
59                 .tv_nsec = (jiffies % AO_SCHEME_JIFFIES_PER_SECOND) * (1000000000L / AO_SCHEME_JIFFIES_PER_SECOND)
60         };
61         nanosleep(&ts, NULL);
62 }
63
64 static inline int
65 ao_scheme_os_jiffy(void)
66 {
67         struct timespec tp;
68         clock_gettime(CLOCK_MONOTONIC, &tp);
69         return tp.tv_sec * AO_SCHEME_JIFFIES_PER_SECOND + (tp.tv_nsec / (1000000000L / AO_SCHEME_JIFFIES_PER_SECOND));
70 }
71
72 #endif