EMPBUF
Write out modified I/O buffers
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VSupported on OpenVMS
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EMPBUF is deprecated; we recommend you use the FLUSH statement instead. |
xcall EMPBUF(channel)
Arguments
channel
An expression that evaluates the channel number specified in a previous OPEN statement. (n)
Discussion
The EMPBUF subroutine writes out all modified I/O buffers associated with the file or device opened on the specified channel.
The EMPBUF subroutine uses the RMS service call $FLUSH to instruct the file system to flush its buffers. The file system and the device, however, determine whether EMPBUF physically writes out the buffers. If records were locked on a previous operation, they remain locked.
See also
- Your OpenVMS operating system documentation for more information about $FLUSH
- FLUSH statement
Examples
store(5, rec1) ;Write out important stuff to file store(5, rec2) xcall empbuf(5) ;Make sure records have been flushed to disk