pthread_condattr(3)
- NetBSD Manual Pages
PTHREAD_CONDATTR(3) NetBSD Library Functions Manual PTHREAD_CONDATTR(3)
NAME
pthread_condattr_init, pthread_condattr_getpshared,
pthread_condattr_setpshared, pthread_condattr_getclock,
pthread_condattr_setclock -- condition attribute operations
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_condattr_init(pthread_condattr_t *attr);
int
pthread_condattr_getclock(const pthread_condattr_t *__restrict attr,
clockid_t * __restrict clock_id);
int
pthread_condattr_setclock(pthread_condattr_t *attr, clockid_t clock);
int
pthread_condattr_destroy(pthread_condattr_t *attr);
int
pthread_condattr_getpshared(const pthread_condattr_t * __restrict attr,
int * __restrict pshared);
int
pshared_condattr_setpshared(pthread_condattr_t *attr, int pshared);
DESCRIPTION
Condition attribute objects are used to specify parameters to the
pthread_cond_init(3) function. The pthread_condattr_init() function ini-
tializes a condition attribute object with the default attributes and the
pthread_condattr_destroy() function destroys a condition attribute
object. The pthread_condattr_getclock() function shall obtain the value
of the clock attributes object referenced by attr. The
pthread_condattr_setclock() function sets the system clock to be used for
time comparisons to the one specified in clock. Valid clock values are
CLOCK_MONOTONIC and CLOCK_REALTIME (the default). The
pthread_condattr_getpshared() function shall obtain the value of the
process-shared attribute from the attributes object referenced by attr.
The pthread_condattr_setpshared() function shall set the process-shared
attribute in an initialized attributes object referenced by attr.
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is
returned to indicate the error.
ERRORS
No errors are defined for pthread_condattr_init().
The pthread_condattr_destroy() function may fail if:
[EINVAL] The value specified by attr is invalid.
The pthread_condattr_getclock() and pthread_condattr_setclock() may fail
if:
[EINVAL] The value specified by attr is invalid.
The pthread_condattr_getpshared() and pthread_condattr_setpshared() may
fail if:
[EINVAL] The value specified by attr is invalid.
SEE ALSO
pthread_cond_init(3)
STANDARDS
Both functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').
BUGS
The pthread_condattr_getpshared() and pthread_condattr_setpshared() func-
tions are hidden by default since only thread shared attributes are sup-
ported.
NetBSD 9.1 March 28, 2017 NetBSD 9.1
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