diff options
| -rw-r--r-- | dwm.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/dwm.c b/dwm.c index b390294..f7b9477 100644 --- a/dwm.c +++ b/dwm.c @@ -182,7 +182,6 @@ static void setlayout(const Arg *arg); static void setmfact(const Arg *arg); static void setup(void); static void showhide(Client *c); -static void sigchld(int signal); static void spawn(const Arg *arg); static void tag(const Arg *arg); static int textnw(const char *text, unsigned int len); @@ -1392,24 +1391,22 @@ showhide(Client *c) { } } - -void -sigchld(int signal) { - while(0 < waitpid(-1, NULL, WNOHANG)); -} - void spawn(const Arg *arg) { - signal(SIGCHLD, sigchld); + /* The double-fork construct avoids zombie processes and keeps the code + * clean from stupid signal handlers. */ if(fork() == 0) { - if(dpy) - close(ConnectionNumber(dpy)); - setsid(); - execvp(((char **)arg->v)[0], (char **)arg->v); - fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]); - perror(" failed"); + if(fork() == 0) { + if(dpy) + close(ConnectionNumber(dpy)); + setsid(); + execvp(((char **)arg->v)[0], (char **)arg->v); + fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]); + perror(" failed"); + } exit(0); } + wait(0); } void |