3.2.1.0 table.lock

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table.lock - Function

3.2.1 acquire a lock on the table

Description

Try to acquire a read or write lock on the table. Nothing will be done if the table is already correctly locked by this process. It is only needed when user locking is used. When the lock is acquired, the internal caches will be synchronized with the (possibly changed) contents of the table.
It is possible to specify the number of attempts to do (1 per second) in case the table is locked by another process. The default 0 is trying indefinitely.

Arguments


Inputs
write	Write lock? (F=read lock)
	allowed:	bool
	Default:	true
nattempts	Nr of attempts
	allowed:	int
	Default:	0

Returns
bool
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