procexec/exit_handlers.c

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

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Download procexec/exit_handlers.c

Cover of The Linux Programming Interface

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

atexitFunc1()
atexitFunc2()
onexitFunc()
main()

#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);
}

Download procexec/exit_handlers.c

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