Hands-On System Programming with Linux

Thread cleanup – code example

As a simple code example, let's modify our earlier refactored program—ch16/mt_iobif_rfct.c by installing a thread-cleanup handler routine. To test it, we cancel the first worker thread if the user passes 1 as the second parameter to our demo program, the ch16/cleanup_hdlr.c. program.

For readability, only key parts of the source code are displayed here. To view the complete source code, build and run it. The entire tree is available for cloning from GitHub: https://github.com/PacktPublishing/Hands-on-System-Programming-with-Linux.

Here is the cleanup handler function and the re-worked wrapper routine – now with the cleanup handler push and pop APIs:

static void cleanup_handler(void *arg){ printf("+++ In %s +++\n" ...