SIMPLE SOLUTIONS

BUF_TIMELOCK(9FREEBSD) - man page online | system kernel interfaces

Locks a buffer.

Chapter
July 9, 2001 
BUF_TIMELOCK(9)                   BSD Kernel Developer's Manual                   BUF_TIMELOCK(9)


NAME
     BUF_TIMELOCK — locks a buffer


SYNOPSIS
     #include <sys/param.h>
     #include <sys/systm.h>
     #include <sys/uio.h>
     #include <sys/bio.h>
     #include <sys/buf.h>

     int
     BUF_TIMELOCK(struct buf *bp, int locktype, char *wmesg, int catch, int timo);


DESCRIPTION
     The BUF_TIMELOCK() function locks the given buffer, and limits the amount of time it will
     sleep to timo and OR's catch into the sleep's priority.  wmesg is the wmesg used in the
     sleep.

     Its arguments are:

     bp        The buffer to lock.

     locktype  Flags controlling the type of lock.  See lockmgr(9) for details.

     wmesg     The wmesg used in any sleeps while acquiring the lock.

     catch     Priority OR'd into the sleep's priority.

     timo      The timeout for any sleeps encountered during the lock.


RETURN VALUES
     A value of 0 is returned on success.  See lockmgr(9) for details on non-zero return values.


SEE ALSO
     buf(9), BUF_LOCK(9), BUF_UNLOCK(9), lockmgr(9)


AUTHORS
     This manual page was written by Chad David <@acns.ab.ca>.


BSD                                        July 9, 2001                                       BSD
This manual Reference Other manuals
BUF_TIMELOCK(9freebsd) referred by BUF_LOCK(9freebsd) | BUF_LOCKFREE(9freebsd) | BUF_LOCKINIT(9freebsd) | BUF_UNLOCK(9freebsd)
refer to buf(9freebsd) | BUF_LOCK(9freebsd) | BUF_UNLOCK(9freebsd) | lockmgr(9freebsd)