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 .Fo pthread_cond_init
  40 .Fa "pthread_cond_t *restrict cond"
  41 .Fa "const pthread_condattr_t *restrict attr"
  42 .Fc
  43 .Sh DESCRIPTION
  44 The
  45 .Fn pthread_cond_init
  46 function creates a new condition variable, with attributes specified with
  47 .Fa attr .
  48 If
  49 .Fa attr
  50 is NULL, the default attributes are used.
  51 .Sh RETURN VALUES
  52 If successful, the
  53 .Fn pthread_cond_init
  54 function will return zero and put the new condition variable id into
  55 .Fa cond .
  56 Otherwise, an error number will be returned to indicate the error.
  57 .Sh ERRORS
  58 .Fn pthread_cond_init
  59 will fail if:
  60 .Bl -tag -width Er
  61 .It Bq Er EAGAIN
  62 The system temporarily lacks the resources to create another condition
  63 variable.
  64 .It Bq Er EINVAL
  65 The value specified by
  66 .Fa attr
  67 is invalid.
  68 .It Bq Er ENOMEM
  69 The process cannot allocate enough memory to create another condition
  70 variable.
  71 .El
  72 .Sh SEE ALSO
  73 .Xr pthread_cond_broadcast 3 ,
  74 .Xr pthread_cond_destroy 3 ,
  75 .Xr pthread_cond_signal 3 ,
  76 .Xr pthread_cond_timedwait 3 ,
  77 .Xr pthread_cond_wait 3
  78 .Sh STANDARDS
  79 .Fn pthread_cond_init
  80 conforms to
  81 .St -p1003.1-96 .