pthreads/pthread_cond_init.3

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  30 .Dd July 28, 1998
  31 .Dt PTHREAD_COND_INIT 3
  32 .Os
  33 .Sh NAME
  34 .Nm pthread_cond_init
  35 .Nd create a condition variable
  36 .Sh SYNOPSIS
  37 .Fd #include <pthread.h>
  38 .Ft int
  39 .Fn pthread_cond_init "pthread_cond_t *cond" "const pthread_condattr_t *attr"
  40 .Sh DESCRIPTION
  41 The
  42 .Fn pthread_cond_init
  43 function creates a new condition variable, with attributes specified with
  44 .Fa attr .
  45 If
  46 .Fa attr
  47 is NULL the default attributes are used.
  48 .Sh RETURN VALUES
  49 If successful, the
  50 .Fn pthread_cond_init
  51 function will return zero and put the new condition variable id into
  52 .Fa cond ,
  53 otherwise an error number will be returned to indicate the error.
  54 .Sh ERRORS
  55 .Fn pthread_cond_init
  56 will fail if:
  57 .Bl -tag -width Er
  58 .It Bq Er EINVAL
  59 The value specified by
  60 .Fa attr
  61 is invalid.
  62 .It Bq Er ENOMEM
  63 The process cannot allocate enough memory to create another condition
  64 variable.
  65 .It Bq Er EAGAIN
  66 The system temporarily lacks the resources to create another condition
  67 variable.
  68 .El
  69 .Sh SEE ALSO
  70 .Xr pthread_cond_broadcast 3 ,
  71 .Xr pthread_cond_destroy 3 ,
  72 .Xr pthread_cond_signal 3 ,
  73 .Xr pthread_cond_timedwait 3 ,
  74 .Xr pthread_cond_wait 3
  75 .Sh STANDARDS
  76 .Fn pthread_cond_init
  77 conforms to
  78 .St -p1003.1-96 .