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Shell Programming and Scripting
file descriptor KSH
Post 302522627 by ahamed101 on Monday 16th of May 2011 05:36:02 AM
05-16-2011
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LEARN ABOUT HPUX
tt_fd
tt_fd(library call) tt_fd(library call) NAME
tt_fd -- return a file descriptor SYNOPSIS
#include <Tt/tt_c.h> int tt_fd(void) DESCRIPTION
The tt_fd function returns a file descriptor. The returned file descriptor alerts the process that a message has arrived for the default procid in the default session. File descriptors are either active or inactive. When the file descriptor becomes active, the process must call tt_message_receive(3) to receive the message. RETURN VALUE
Upon successful completion, the tt_fd function returns the file descriptor for the current procid. The application can use tt_int_error(3) to extract one of the following Tt_status values from the returned integer: TT_OK The operation completed successfully. TT_ERR_NOMP The ttsession(1) process is not running and the ToolTalk service cannot restart it. TT_ERR_PROCID The current default process identifier is out of date or invalid. TT_ERR_SESSION The specified ToolTalk session is out of date or invalid. APPLICATION USAGE
The application must have a separate file descriptor for each procid. To get an associated file descriptor, the application should use tt_fd each time it calls tt_open(3). SEE ALSO
Tt/tt_c.h - Tttt_c(5), tt_open(3), tt_int_error(3), tt_message_receive(3). tt_fd(library call)