procexec/exit_handlers.c

This is procexec/exit_handlers.c (Listing 25-1, page 536), an example from the book, The Linux Programming Interface.

The source code file is copyright 2024, Michael Kerrisk, and is licensed under the GNU General Public License, version 3.

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  Cover of The Linux Programming Interface

Function list (Bold in this list means a function is not static)

#define _BSD_SOURCE     /* Get on_exit() declaration from <stdlib.h> */
#include <stdlib.h>
#include "tlpi_hdr.h"
static void
atexitFunc1(void)
{
    printf("atexit function 1 called\n");
}
static void
atexitFunc2(void)
{
    printf("atexit function 2 called\n");
}
static void
onexitFunc(int exitStatus, void *arg)
{
    printf("on_exit function called: status=%d, arg=%ld\n",
                exitStatus, (long) arg);
}
int
main(int argc, char *argv[])
{
    if (on_exit(onexitFunc, (void *) 10) != 0)
        fatal("on_exit 1");
    if (atexit(atexitFunc1) != 0)
        fatal("atexit 1");
    if (atexit(atexitFunc2) != 0)
        fatal("atexit 2");
    if (on_exit(onexitFunc, (void *) 20) != 0)
        fatal("on_exit 2");

    exit(2);
}

 

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