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Improve some timespec functions

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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/assert.h"
#include "libc/calls/struct/timespec.h" #include "libc/calls/struct/timespec.h"
#include "libc/sysv/consts/clock.h" #include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/nr.h"
#include "libc/time/time.h"
struct timespec _timespec_mono(void) { struct timespec _timespec_mono(void) {
int ax, dx;
struct timespec ts; struct timespec ts;
ax = clock_gettime(CLOCK_MONOTONIC_FAST, &ts); _npassert(!clock_gettime(CLOCK_MONOTONIC_FAST, &ts));
assert(!ax);
return 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 │ │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │ │ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/ ╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/struct/timespec.h" #include "libc/calls/struct/timespec.h"
#include "libc/sysv/consts/clock.h" #include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/nr.h"
#include "libc/time/time.h"
struct timespec _timespec_real(void) { struct timespec _timespec_real(void) {
int ax, dx;
struct timespec ts; struct timespec ts;
ax = clock_gettime(CLOCK_REALTIME_FAST, &ts); _npassert(!clock_gettime(CLOCK_REALTIME_FAST, &ts));
if (ax) notpossible;
return 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) && if (!__builtin_mul_overflow(x.tv_sec, 1000000ul, &us) &&
!__builtin_add_overflow(us, x.tv_nsec / 1000, &us)) { !__builtin_add_overflow(us, x.tv_nsec / 1000, &us)) {
return us; return us;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else { } else {
return INT64_MAX; 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) && if (!__builtin_mul_overflow(x.tv_sec, 1000ul, &ms) &&
!__builtin_add_overflow(ms, x.tv_nsec / 1000000, &ms)) { !__builtin_add_overflow(ms, x.tv_nsec / 1000000, &ms)) {
return ms; return ms;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else { } else {
return INT64_MAX; 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) && if (!__builtin_mul_overflow(x.tv_sec, 1000000000ul, &ns) &&
!__builtin_add_overflow(ns, x.tv_nsec, &ns)) { !__builtin_add_overflow(ns, x.tv_nsec, &ns)) {
return ns; return ns;
} else if (x.tv_sec < 0) {
return INT64_MIN;
} else { } else {
return INT64_MAX; return INT64_MAX;
} }

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

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