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Updated: Thursday, June 13, 2019
 
 

tt_open (3)

Name

tt_open - return the process identifier for the calling process

Synopsis

#include <Tt/tt_c.h>
char *tt_open(void);

Description

tt_open(3)                    ToolTalk Functions                    tt_open(3)



NAME
       tt_open - return the process identifier for the calling process

SYNOPSIS
       #include <Tt/tt_c.h>
       char *tt_open(void);

DESCRIPTION
       The  tt_open()  function returns the process identifier for the calling
       process.

RETURN VALUE
       The tt_open() function also sets this identifier as the default  procid
       for  the  process.   The  tt_open(3)  function  is  typically the first
       ToolTalk function called by a process.

       The application must call tt_open(3) before other tt_ calls  are  made.
       However, there are three exceptions: tt_default_session_set(3), tt_fea-
       ture_required(3), and tt_X_session(3) can be called before tt_open().

       A process can call tt_open() more than once to obtain multiple procids.
       To  open  another session, the process must make the following calls in
       the order specified:

            tt_default_session_set(3)
            tt_open()

RETURN VALUE
       Upon successful completion, the tt_open() function returns the  charac-
       ter  value  that  uniquely identifies the process.  The application can
       use tt_ptr_error(3) to extract one of the  following  Tt_status  values
       from the returned pointer:

          TT_OK   The operation completed successfully.

          TT_ERR_NOMP
                  The  ttsession(1)  process  is  not running and the ToolTalk
                  service cannot restart it.

APPLICATION USAGE
       The application should use tt_free(3) to free any data  stored  in  the
       address returned by the ToolTalk API.

       Each  procid  has  its  own  associated  file  descriptor, and can join
       another session.  To switch to another procid, the  application  should
       call tt_default_procid_set().


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | library/tooltalk |
       +---------------+------------------+
       |Stability      | Committed        |
       +---------------+------------------+
SEE ALSO
       tt_c(5), tt_fd(3), tt_default_procid(3), tt_default_procid_set(3),
       tt_default_session(3), tt_default_session_set(3), tt_fea-
       ture_required(3), tt_ptr_error(3), tt_free(3).




ToolTalk 1.3                     1 March 1996                       tt_open(3)