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Chapter 4. Using Clozure CL

4.14. Other Extensions

[Function]

quit &optional (exit 0) &key error-handler
Cleanly exit the lisp.

Summary:

Cleanly exit from lisp. If the exit argument is a value of type (signed-byte 32), that value will be passed to the C library function _exit() as the status code. (A value of nil is treated as a zero.)

Alternatively, exit may be a function of no arguments; this function will be called instead of _exit() to exit the lisp.

The error-handler argument, if supplied, must be a function of one argument, the condition, that will be called if an error occurs when preparing to quit. The error-handler function should exit the lisp.

[Function]

wait-for-signal s duration
Wait for a particular signal to be received.

Summary:

Wait for the signal with signal number s to be received, or until duration seconds have elapsed. If duration is nil, wait for an indeterminate "very long time" (many years).

If signal number s is outside the range of valid signals, or is reserved by the lisp for its own use, an error is signaled. (An error is always signaled on Windows systems.)

[Special operator]

unwind-protect protected-form {cleanup-form}*
Ensure cleanup-forms are executed.

Summary:

In Clozure CL, the cleanup forms are always executed as if they were wrapped with without-interrupts. To allow interrupts, use with-interrupts-enabled.

[Variable]

*disassemble-verbose*
When true, display verbose disassembly output.

Description:

When true, the output of disassemble may include platform-dependent additional information. For instance, on the x86 ports, the output will include the x86 opcode bytes.

The default value is nil.


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