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remove sigchld function

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Explicitly setting the handler for SIGCHLD to SIG_IGN tells the OS to
reap zombie processes automatically, which is what we wanted anyway.
This commit is contained in:
Devin J. Pohly 2021-03-10 09:50:09 -06:00
parent 15f5d31f98
commit 1fa72b0772
1 changed files with 3 additions and 12 deletions
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15
dwl.c
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@ -278,7 +278,6 @@ static void setlayout(const Arg *arg);
static void setmfact(const Arg *arg);
static void setmon(Client *c, Monitor *m, unsigned int newtags);
static void setup(void);
static void sigchld(int unused);
static void spawn(const Arg *arg);
static void tag(const Arg *arg);
static void tagmon(const Arg *arg);
@ -1984,8 +1983,9 @@ setup(void)
* clients from the Unix socket, manging Wayland globals, and so on. */
dpy = wl_display_create();
/* clean up child processes immediately */
sigchld(0);
/* Indicate explicitly to the OS that we are not interested in info
* about child processes (per POSIX.1-2001) */
signal(SIGCHLD, SIG_IGN);
/* The backend is a wlroots feature which abstracts the underlying input and
* output hardware. The autocreate option will choose the most suitable
@ -2136,15 +2136,6 @@ setup(void)
#endif
}
void
sigchld(int unused)
{
if (signal(SIGCHLD, sigchld) == SIG_ERR)
EBARF("can't install SIGCHLD handler");
while (0 < waitpid(-1, NULL, WNOHANG))
;
}
void
spawn(const Arg *arg)
{