1 files changed, 28 insertions(+), 0 deletions(-)

M main.c

@@ 47,7 47,11 @@ typedef struct {
     char    port[8];
 } prefs_t;
 
+#ifdef __minix
+static void signal_handler(int) __attribute__((noreturn));
+#else
 static void signal_handler(int);
+#endif
 static int  get_listener(prefs_t *);
 static void set_defaults(prefs_t *);
 static void print_usage(const char *program);


@@ 57,6 61,30 @@ static void
 signal_handler(int signum)
 {
     printf("\nINFO : Received signal %i.\n", signum);
+#ifdef __minix
+    /*
+     * HACK: Minix 3.3.0's libc has a broken implementation of the
+     * `poll()` syscall.  We rely on `poll()`'s ability to error out
+     * with an EINTR everytime it is interrupted with this signal
+     * handler (like for example when the user presses ^C) to cleanup
+     * heap before exiting.  Minix 3.3.0 just doesn't wanna error out,
+     * rather it continues operating from where it left off.  Hence we
+     * might just not care about the whole cleaning up heap thing and
+     * just exit just in case of Minix since Linux and FreeBSD do not
+     * misbehave in such a manner.  Also whoever builds this on Minix
+     * and expects it to work flawlessly is probably a psychopath
+     * anyway.
+     *
+     * WARN: We could declare `session` and `tpool` (defined in
+     * `main()`) globally and call destroy on them right in this
+     * subroutine, but I've been through that experiment and the pthread
+     * calls segfault on Minix for some reason so that doesn't help
+     * either.  Also I'm not a fan of global variables.
+     */
+    printf("WARN : Cannot exit gracefully on Minix.\n"
+	   "     : Watch out for those memory leaks.\n");
+    exit(EXIT_SUCCESS);
+#endif	/* __minix */
 }
 
 static int