Inside Macintosh: Open Transport /

Chapter 7 - Process Management / Process Management Reference

Functions / Entering and Leaving Interrupt Time

OTEnterInterrupt

Notifies Open Transport that you are about to call an Open Transport function from an interrupt.

C INTERFACE

void OTEnterInterrupt(void)

C++ INTERFACES

None. C++ applications use the C interface to this function.

DESCRIPTION

The OTEnterInterrupt function informs Open Transport it is at primary interrupt time. This allows Open Transport to more intelligently schedule network activity. You must use this function when you are about to call one of the few Open Transport functions permitted at interrupt time.

SPECIAL CONSIDERATIONS

On the 68000-family of Macintosh computers, you must be sure that your A5 world is set correctly before making this call (that is, having the same value it had when you called the InitOpenTransport or the InitOpenTransportUtilities function).

You must call the OTLeaveInterrupt function before you leave interrupt time.

SEE ALSO

Table 7-1 provides a list of functions that you can call at interrupt time (page 7-6).

Before leaving the interrupt context, use the OTLeaveInterrupt function (page 7-20).

For further discussion, see the section "Entering and Leaving Interrupt Processing," beginning on page 7-6.