HP UX 11i v1 I/O Cards manual Cancellation point, Zap

			ZCOM C I/F Library Routines
			ZCONFIG (3X)
Threads	This routine may be called from multi-threaded application using the
Considerations	POSIX (1003.1c) kernel threads API package. It has the following
	characteristics when called by multi-threaded application:
	cancellation point		Thread cancellation can occur when a
			thread calls this routine
	async-cancel unsafe		The calling thread’s cancelability
			type must be
			PTHREAD_CANCEL_DEFERRED if
			cancellation is enabled.
	async-signal unsafe		It cannot be called from a signal
			handler.
	fork unsafe		It cannot be called by a child process
			after fork (2) but before exec (2).
PARAMETERS	zap	Pointer to source ZCOM address.
		It is the ZCOM address identifying the originator of the
		configuration request and is usually set to the primary
		ZLU of the calling program. In this implementation,
		the originator must be from the local node, i.e. the
		“node” field of this address must be either zero or the
		local node number (except for the Port Configuration
		functions)
	mode	Operating mode.

The mode parameter specifies whether to perform the configuration with or with-out wait. Allowed values are:

ZcDSC_IMMEDIATE(0) - Immediate configuration.

RS 4 The caller is suspended until the requested configuration is completed. The rdata parameter contains the returned response data.

ZcDSC_DEFERRED (1) - Deferred configuration.

RS 4 ZCONFIG initiates the configuration and returns. On completion, a response message is sent to the “saddr”. This mode is not supported.

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