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Article contents:[[tags: manual]] [[toc:]] == Module (chicken errno) This module provides access to the standard C {{errno}} value. Be careful, if you're using threads, {{errno}} might be clobbered as soon as another thread calls a C function. To prevent this from happening, you can add {{(declare (disable-interrupts))}} at the top of your file, or use the {{-disable-interrupts}} compiler option to avoid any context switches while a procedure in this file is running. === errno <procedure>(errno)</procedure> Returns the error code of the last system call. === errno constants <constant>errno/perm</constant><br> <constant>errno/noent</constant><br> <constant>errno/srch</constant><br> <constant>errno/intr</constant><br> <constant>errno/io</constant><br> <constant>errno/noexec</constant><br> <constant>errno/badf</constant><br> <constant>errno/child</constant><br> <constant>errno/nomem</constant><br> <constant>errno/acces</constant><br> <constant>errno/fault</constant><br> <constant>errno/busy</constant><br> <constant>errno/notdir</constant><br> <constant>errno/isdir</constant><br> <constant>errno/inval</constant><br> <constant>errno/mfile</constant><br> <constant>errno/nospc</constant><br> <constant>errno/spipe</constant><br> <constant>errno/pipe</constant><br> <constant>errno/again</constant><br> <constant>errno/rofs</constant><br> <constant>errno/exist</constant><br> <constant>errno/wouldblock</constant> These variables contain error codes as returned by {{errno}}. ''NOTE'': On Windows, {{EWOULDBLOCK}} does not exist. For consistency, {{errno/wouldblock}} does exist, but it is defined as zero. This does mean that in case there is no error, it looks like the {{errno/wouldblock}} error is returned. But you have to check the return code of a system call before accessing {{errno}} anyway, so this should typically never happen. --- Previous: [[Module (chicken csi)]] Next: [[Module (chicken eval)]] Description of your changes:

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