part of shnell – a source to source compiler enhancement tool

© Jens Gustedt, 2019

establish atexit handlers

Usage:

#pragma CMOD insert atexit FUNCTION0 …

where FUNCTIONx are functions that have the signature

void FUNCTIONx(void);

This is intended to be used with the implicit directive.

The atexit directive establishes atexit handlers that are intended to be run after any thread but the last of an execution has finished. It is implemented by means of the atexit C library call and is compatible with explicit calls to that function.

The order of the execution of these handlers from different TU is the inverse of the “used-by” relation as detected by the implicit directive. That is, if such a handler is called, we know that all handlers from all TU that use the current TU have been executed.

See startup for an analogous directive hat establishes handlers that are run at the start of an execution, and how the order of invocation is established.

Coding and configuration

SRC="$_" . "${0%%/${0##*/}}/import.sh"

Imports

The following sh-modules are imported:

• arguments
• echo
• tmpd
• join

Details