treverted spawn - dwm - [fork] customized build of dwm, the dynamic window mana… | |
git clone git://src.adamsgaard.dk/dwm | |
Log | |
Files | |
Refs | |
README | |
LICENSE | |
--- | |
commit e7572804faa9a21a57ae298c2b153ff92d8a64ff | |
parent ed1bef1241334b8b0025a032b710a90223393fd1 | |
Author: [email protected] <unknown> | |
Date: Sat, 6 Dec 2008 09:16:48 +0000 | |
reverted spawn | |
Diffstat: | |
M dwm.c | 25 +++++++++++-------------- | |
1 file changed, 11 insertions(+), 14 deletions(-) | |
--- | |
diff --git a/dwm.c b/dwm.c | |
t@@ -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); | |
t@@ -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 |