diff options
Diffstat (limited to 'nptl/pthread_condattr_setclock.c')
| -rw-r--r-- | nptl/pthread_condattr_setclock.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/nptl/pthread_condattr_setclock.c b/nptl/pthread_condattr_setclock.c index 25e2a176a0..3cfad84cda 100644 --- a/nptl/pthread_condattr_setclock.c +++ b/nptl/pthread_condattr_setclock.c @@ -18,7 +18,7 @@ #include <assert.h> #include <errno.h> -#include <stdbool.h> +#include <futex-internal.h> #include <time.h> #include <sysdep.h> #include "pthreadP.h" @@ -33,12 +33,17 @@ pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock_id) in the pthread_cond_t structure needs to be adjusted. */ return EINVAL; + /* If we do not support waiting using CLOCK_MONOTONIC, return an error. */ + if (clock_id == CLOCK_MONOTONIC + && !futex_supports_exact_relative_timeouts()) + return ENOTSUP; + /* Make sure the value fits in the bits we reserved. */ - assert (clock_id < (1 << COND_NWAITERS_SHIFT)); + assert (clock_id < (1 << COND_CLOCK_BITS)); int *valuep = &((struct pthread_condattr *) attr)->value; - *valuep = ((*valuep & ~(((1 << COND_NWAITERS_SHIFT) - 1) << 1)) + *valuep = ((*valuep & ~(((1 << COND_CLOCK_BITS) - 1) << 1)) | (clock_id << 1)); return 0; |