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F_LOCK.HDR
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1994-04-25
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/******************************************************************************
The Klipper Library, for CA-Clipper 5.x
Copyright (c), 1994, Wallace Information Systems Engineering
FUNCTION:
_FLock() --> lLockStatus
PARAMETERS:
None
SHORT:
Lock current database file if possible.
DESCRIPTION:
_FLock() is a general purpose file locking mechanism.
Like _RLock() and _SUse()/_XUse(), this function waits indefinately until the
lock is resolved. That is to say, no exception can be made. Program
execution stops until the file lock is successful.
NOTE:
EXAMPLE:
_FLock()
Result: File is locked and unavailable for SHARED use by any other user.
******************************************************************************/