generate-interrupt-checks-switch

$Revision: 5.0.2.3 $

Variable

Package: COMPILER

The value of this variable can be t, nil, or a function object that accepts four arguments and returns t or nil. The arguments passed to the function will be the values of the safety, space, speed, and debug optimization qualities, in that order. nil is equivalent to a function that always returns nil and t to a function that always returns t. When we say t (or true) or nil (or false) in the text below, we mean that the function returns, respectively, t or nil.

If true, code is added at the beginning of the code vector for and at the end of a loop in a compiled function that checks for an interrupt (Control-C on Unix, Break/Pause on Windows). Initially true only if speed is 3 and safety is 0.

Note that an infinite loop that does not call functions will not be interruptable except by multiple Control-C's (Unix) and using the Franz icon on the system tray (Windows). See startup.htm for more information on interrupting when all else fails.

See compiling.htm for information on the compiler.

See introduction.htm for a general description of the documentation and index.htm for an index.