+static void
+bad_malloc(unsigned int size)
+{
+ fprintf(stderr, "fatal: could not malloc() %d bytes\n",
+ (int) size);
+ exit(1);
+}
+
+void *
+emallocz(unsigned int size)
+{
+ void *res = calloc(1, size);
+ if(!res)
+ bad_malloc(size);
+ return res;
+}
+
+void
+spawn(Arg *arg)
+{
+ char **argv = (char **)arg->argv;
+ if(!argv || !argv[0])
+ return;
+ if(fork() == 0) {
+ if(fork() == 0) {
+ if(dpy)
+ close(ConnectionNumber(dpy));
+ setsid();
+ execvp(argv[0], argv);
+ fprintf(stderr, "dwm: execvp %s", argv[0]);
+ perror(" failed");
+ }
+ exit (0);
+ }
+ wait(0);
+}