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| author | Mike Crowe <mac@mcrowe.com> | 2019-10-31 10:03:21 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-11-01 11:23:43 -0300 |
| commit | 69ca4b54c151cec42ccca5e05790efc1a8206b47 (patch) | |
| tree | e239090413e1da5dbd3a9fc3ce54895da5624346 /nptl/pthread_join_common.c | |
| parent | 893bbdd0072fbf96808e66af04b970e5b39171fb (diff) | |
| download | glibc-69ca4b54c151cec42ccca5e05790efc1a8206b47.tar.gz glibc-69ca4b54c151cec42ccca5e05790efc1a8206b47.tar.xz glibc-69ca4b54c151cec42ccca5e05790efc1a8206b47.zip | |
nptl: Add pthread_clockjoin_np
Introduce pthread_clockjoin_np as a version of pthread_timedjoin_np that accepts a clockid_t parameter to indicate which clock the timeout should be measured against. This mirrors the recently-added POSIX-proposed "clock" wait functions. Checked on x86_64-linux-gnu. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'nptl/pthread_join_common.c')
| -rw-r--r-- | nptl/pthread_join_common.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/nptl/pthread_join_common.c b/nptl/pthread_join_common.c index 4d91c6fbf2..998d227e2c 100644 --- a/nptl/pthread_join_common.c +++ b/nptl/pthread_join_common.c @@ -37,7 +37,7 @@ cleanup (void *arg) afterwards. The kernel up to version 3.16.3 does not use the private futex operations for futex wake-up when the clone terminates. */ static int -timedwait_tid (pid_t *tidp, const struct timespec *abstime) +clockwait_tid (pid_t *tidp, clockid_t clockid, const struct timespec *abstime) { pid_t tid; @@ -49,8 +49,10 @@ timedwait_tid (pid_t *tidp, const struct timespec *abstime) { struct timespec rt; - /* Get the current time. */ - __clock_gettime (CLOCK_REALTIME, &rt); + /* Get the current time. This can only fail if clockid is + invalid. */ + if (__glibc_unlikely (__clock_gettime (clockid, &rt))) + return EINVAL; /* Compute relative timeout. */ rt.tv_sec = abstime->tv_sec - rt.tv_sec; @@ -77,7 +79,8 @@ timedwait_tid (pid_t *tidp, const struct timespec *abstime) } int -__pthread_timedjoin_ex (pthread_t threadid, void **thread_return, +__pthread_clockjoin_ex (pthread_t threadid, void **thread_return, + clockid_t clockid, const struct timespec *abstime, bool block) { struct pthread *pd = (struct pthread *) threadid; @@ -122,7 +125,7 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return, /* BLOCK waits either indefinitely or based on an absolute time. POSIX also states a cancellation point shall occur for pthread_join, and we use the - same rationale for posix_timedjoin_np. Both timedwait_tid and the futex + same rationale for posix_timedjoin_np. Both clockwait_tid and the futex call use the cancellable variant. */ if (block) { @@ -132,7 +135,7 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return, pthread_cleanup_push (cleanup, &pd->joinid); if (abstime != NULL) - result = timedwait_tid (&pd->tid, abstime); + result = clockwait_tid (&pd->tid, clockid, abstime); else { pid_t tid; @@ -165,4 +168,3 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return, return result; } -hidden_def (__pthread_timedjoin_ex) |