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.\" $FreeBSD: head/share/man/man3/pthread_cond_init.3 276261 2014-12-26 22:41:10Z bapt $
.\"
.Dd November 4, 2006
.Dt PTHREAD_COND_INIT 3
.Os
.Sh NAME
.Nm pthread_cond_init
.Nd create a condition variable
.Sh LIBRARY
.Lb libpthread
.Sh SYNOPSIS
.In pthread.h
.Ft int
.Fn pthread_cond_init "pthread_cond_t *cond" "const pthread_condattr_t *attr"
.Sh DESCRIPTION
The
.Fn pthread_cond_init
function creates a new condition variable, with attributes specified with
.Fa attr .
If
.Fa attr
is NULL the default attributes are used.
.Sh RETURN VALUES
If successful, the
.Fn pthread_cond_init
function will return zero and put the new condition variable id into
.Fa cond ,
otherwise an error number will be returned to indicate the error.
.Sh ERRORS
The
.Fn pthread_cond_init
function will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
The value specified by
.Fa attr
is invalid.
.It Bq Er ENOMEM
The process cannot allocate enough memory to create another condition
variable.
.It Bq Er EAGAIN
The system temporarily lacks the resources to create another condition
variable.
.El
.Sh SEE ALSO
.Xr pthread_cond_broadcast 3 ,
.Xr pthread_cond_destroy 3 ,
.Xr pthread_cond_signal 3 ,
.Xr pthread_cond_timedwait 3 ,
.Xr pthread_cond_wait 3 ,
.Xr pthread_condattr 3
.Sh STANDARDS
The
.Fn pthread_cond_init
function conforms to
.St -p1003.1-96 .