2 * Copyright (c) 2015 Nuxi, https://nuxi.nl/
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
31 #include <sys/stdint.h>
32 #include <sys/systm.h>
33 #include <sys/syscallsubr.h>
35 #include <contrib/cloudabi/cloudabi_types_common.h>
37 #include <compat/cloudabi/cloudabi_proto.h>
38 #include <compat/cloudabi/cloudabi_util.h>
40 /* Converts a CloudABI clock ID to a FreeBSD clock ID. */
42 cloudabi_convert_clockid(cloudabi_clockid_t in, clockid_t *out)
45 case CLOUDABI_CLOCK_MONOTONIC:
46 *out = CLOCK_MONOTONIC;
48 case CLOUDABI_CLOCK_PROCESS_CPUTIME_ID:
49 *out = CLOCK_PROCESS_CPUTIME_ID;
51 case CLOUDABI_CLOCK_REALTIME:
52 *out = CLOCK_REALTIME;
54 case CLOUDABI_CLOCK_THREAD_CPUTIME_ID:
55 *out = CLOCK_THREAD_CPUTIME_ID;
62 /* Converts a struct timespec to a CloudABI timestamp. */
64 cloudabi_convert_timespec(const struct timespec *in, cloudabi_timestamp_t *out)
66 cloudabi_timestamp_t s, ns;
69 /* Timestamps from before the Epoch cannot be expressed. */
75 if (s > UINT64_MAX / 1000000000 ||
76 (s == UINT64_MAX / 1000000000 && ns > UINT64_MAX % 1000000000)) {
77 /* Addition of seconds and nanoseconds would overflow. */
81 *out = s * 1000000000 + ns;
85 /* Fetches the time value of a clock. */
87 cloudabi_clock_time_get(struct thread *td, cloudabi_clockid_t clock_id,
88 cloudabi_timestamp_t *ret)
94 error = cloudabi_convert_clockid(clock_id, &clockid);
97 error = kern_clock_gettime(td, clockid, &ts);
100 return (cloudabi_convert_timespec(&ts, ret));
104 cloudabi_sys_clock_res_get(struct thread *td,
105 struct cloudabi_sys_clock_res_get_args *uap)
108 cloudabi_timestamp_t cts;
112 error = cloudabi_convert_clockid(uap->clock_id, &clockid);
115 error = kern_clock_getres(td, clockid, &ts);
118 error = cloudabi_convert_timespec(&ts, &cts);
121 memcpy(td->td_retval, &cts, sizeof(cts));
126 cloudabi_sys_clock_time_get(struct thread *td,
127 struct cloudabi_sys_clock_time_get_args *uap)
129 cloudabi_timestamp_t ts;
132 error = cloudabi_clock_time_get(td, uap->clock_id, &ts);
133 memcpy(td->td_retval, &ts, sizeof(ts));