Macro

Summary

Causes any interrupts that occur during the execution of a body of code to be queued, in non-SMP LispWorks only.

Package

mp

Signature

without-interrupts &rest body => result

Arguments

body

The forms to execute while interrupts are queued.

Values

result

The result of executing body.

Description

While body is executing, all interrupts (for example, preemption, keyboard break etc.) are queued. They are executed when body exits.

Notes

without-interrupts is not supported in SMP LispWorks, that is on Microsoft Windows, Mac OS X, Linux, FreeBSD, AIX and x86/x64 Solaris platforms.

Example

To ensure that the seconds and milliseconds slots are always consistent in non-SMP LispWorks, you can use without-interrupts within the function which sets them.

(defstruct elapsed-time

  seconds

  milliseconds)

(defun update-elapsed-time-atomically 

     (elapsed-time seconds milliseconds)

  (mp:without-interrupts

   (setf (elapsed-time-seconds elapsed-time) seconds

         (elapsed-time-milliseconds elapsed-time)

         milliseconds)))

See also

without-preemption