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time/clock_gettime: add handling of CLOCK_THREAD_CPUTIME_ID flag #431

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time/clock_gettime: add handling of CLOCK_THREAD_CPUTIME_ID flag #431

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fee4f32
syscalls: add getThreadCpuTime function
R4ken Aug 12, 2025
ba96e09
posix: handle CLOCK_THREAD_CPUTIME_ID flag in clock_gettime
R4ken Aug 12, 2025
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3 changes: 3 additions & 0 deletions include/sys/threads.h
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,9 @@ static inline int beginthread(void (*start)(void *), unsigned int priority, void
extern int threadsinfo(int n, threadinfo_t *info);


extern time_t getThreadCpuTime(void);


extern int priority(int priority);


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9 changes: 5 additions & 4 deletions include/time.h
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Expand Up @@ -17,7 +17,7 @@
#define _LIBPHOENIX_TIME_H_


#define SECS_TO_USECS_T(secs) (1000000ULL * (secs))
#define SECS_TO_USECS_T(secs) (1000000ULL * (secs))
#define MSECS_TO_USECS_T(msecs) (1000ULL * (msecs))

#include <sys/types.h>
Expand All @@ -26,9 +26,10 @@
#define CLOCKS_PER_SEC 1000000


#define CLOCK_MONOTONIC 0
#define CLOCK_MONOTONIC_RAW 1
#define CLOCK_REALTIME 2
#define CLOCK_MONOTONIC 0
#define CLOCK_MONOTONIC_RAW 1
#define CLOCK_REALTIME 2
#define CLOCK_THREAD_CPUTIME_ID 3


#ifdef __cplusplus
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24 changes: 15 additions & 9 deletions time/time.c
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Expand Up @@ -21,6 +21,7 @@
#include <ctype.h>
#include <stdio.h>
#include <limits.h>
#include <sys/threads.h>


char *tzname[2];
Expand Down Expand Up @@ -91,26 +92,31 @@ time_t time(time_t *tp)

int clock_gettime(clockid_t clk_id, struct timespec *tp)
{
time_t now, offs;
time_t time, offs;

if (tp == NULL) {
errno = EINVAL;
return -1;
}

if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC && clk_id != CLOCK_MONOTONIC_RAW) {
if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC && clk_id != CLOCK_MONOTONIC_RAW && clk_id != CLOCK_THREAD_CPUTIME_ID) {
errno = EINVAL;
return -1;
}

gettime(&now, &offs);

if (clk_id == CLOCK_REALTIME)
now += offs;
if (clk_id == CLOCK_THREAD_CPUTIME_ID) {
time = (unsigned int)getThreadCpuTime();
}
else {
gettime(&time, &offs);
if (clk_id == CLOCK_REALTIME) {
time += offs;
}
}

tp->tv_sec = now / (1000 * 1000);
now -= tp->tv_sec * 1000 * 1000;
tp->tv_nsec = now * 1000;
tp->tv_sec = time / (1000 * 1000);
time -= tp->tv_sec * 1000 * 1000;
tp->tv_nsec = time * 1000;

return EOK;
}
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