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Improve some timespec functions

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This commit is contained in:
Justine Tunney 2022-09-19 16:13:37 -07:00
parent 2395a9eced
commit 6e582d245b
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GPG key ID: BE714B4575D6E328
6 changed files with 16 additions and 10 deletions
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6
libc/calls/_timespec_mono.c
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@ -19,13 +19,9 @@
#include "libc/assert.h"
#include "libc/calls/struct/timespec.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/nr.h"
#include "libc/time/time.h"
struct timespec _timespec_mono(void) {
int ax, dx;
struct timespec ts;
ax = clock_gettime(CLOCK_MONOTONIC_FAST, &ts);
assert(!ax);
_npassert(!clock_gettime(CLOCK_MONOTONIC_FAST, &ts));
return ts;
}

7
libc/calls/_timespec_real.c
View file

@ -16,15 +16,12 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/struct/timespec.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/nr.h"
#include "libc/time/time.h"
struct timespec _timespec_real(void) {
int ax, dx;
struct timespec ts;
ax = clock_gettime(CLOCK_REALTIME_FAST, &ts);
if (ax) notpossible;
_npassert(!clock_gettime(CLOCK_REALTIME_FAST, &ts));
return ts;
}

2
libc/calls/_timespec_tomicros.c
View file

@ -27,6 +27,8 @@ int64_t _timespec_tomicros(struct timespec x) {
if (!__builtin_mul_overflow(x.tv_sec, 1000000ul, &us) &&
!__builtin_add_overflow(us, x.tv_nsec / 1000, &us)) {
return us;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else {
return INT64_MAX;
}

2
libc/calls/_timespec_tomillis.c
View file

@ -27,6 +27,8 @@ int64_t _timespec_tomillis(struct timespec x) {
if (!__builtin_mul_overflow(x.tv_sec, 1000ul, &ms) &&
!__builtin_add_overflow(ms, x.tv_nsec / 1000000, &ms)) {
return ms;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else {
return INT64_MAX;
}

2
libc/calls/_timespec_tonanos.c
View file

@ -27,6 +27,8 @@ int64_t _timespec_tonanos(struct timespec x) {
if (!__builtin_mul_overflow(x.tv_sec, 1000000000ul, &ns) &&
!__builtin_add_overflow(ns, x.tv_nsec, &ns)) {
return ns;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else {
return INT64_MAX;
}

7
test/libc/calls/_timespec_test.c
View file

@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/struct/timespec.h"
#include "libc/limits.h"
#include "libc/stdio/rand.h"
#include "libc/testlib/testlib.h"
@ -64,14 +65,20 @@ TEST(_timespec_frommicros, test) {
TEST(_timespec_tomillis, test) {
EXPECT_EQ(2123, _timespec_tomillis((struct timespec){2, 123000000}));
EXPECT_EQ(INT64_MAX, _timespec_tomillis((struct timespec){INT64_MAX, 0}));
EXPECT_EQ(INT64_MIN, _timespec_tomillis((struct timespec){INT64_MIN, 0}));
}
TEST(_timespec_tomicros, test) {
EXPECT_EQ(2000123, _timespec_tomicros((struct timespec){2, 123000}));
EXPECT_EQ(INT64_MAX, _timespec_tomicros((struct timespec){INT64_MAX, 0}));
EXPECT_EQ(INT64_MIN, _timespec_tomicros((struct timespec){INT64_MIN, 0}));
}
TEST(_timespec_tonanos, test) {
EXPECT_EQ(2000123000, _timespec_tonanos((struct timespec){2, 123000}));
EXPECT_EQ(INT64_MAX, _timespec_tonanos((struct timespec){INT64_MAX, 0}));
EXPECT_EQ(INT64_MIN, _timespec_tonanos((struct timespec){INT64_MIN, 0}));
}
static long mod(long x, long y) {