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author | Devin J. Pohly <djpohly@gmail.com> | 2020-08-18 18:22:44 -0500 |
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committer | Devin J. Pohly <djpohly@gmail.com> | 2020-08-18 18:22:44 -0500 |
commit | d615d3836c8a4091a9fc7f5313e517f04df48601 (patch) | |
tree | 9036730e5be5a3daf4c18612e3f06eecaabdce9a | |
parent | c0b05eddb8c3cca888f75eab45288802ce592431 (diff) |
Use SIGCHLD handler from dwm
Fixes #46.
-rw-r--r-- | dwl.c | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -224,6 +224,7 @@ 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); @@ -1458,6 +1459,9 @@ setsel(struct wl_listener *listener, void *data) void setup(void) { + /* clean up child processes immediately */ + sigchld(0); + /* The backend is a wlroots feature which abstracts the underlying input and * output hardware. The autocreate option will choose the most suitable * backend based on the current environment, such as opening an X11 window @@ -1580,6 +1584,17 @@ setup(void) } void +sigchld(int unused) +{ + if (signal(SIGCHLD, sigchld) == SIG_ERR) { + perror("can't install SIGCHLD handler"); + exit(EXIT_FAILURE); + } + while (0 < waitpid(-1, NULL, WNOHANG)) + ; +} + +void spawn(const Arg *arg) { if (fork() == 0) { |