cool autostart patch

config.def.h

@@ -34,6 +34,13 @@ static const unsigned int alphas[][3]      = {
 	[SchemeHid]  = { OPAQUE, baralpha, borderalpha },
 };
 
+static const char *const autostart[] = {
+	"picom", NULL,
+	"unclutter", NULL,
+	"dwmblocks", NULL,
+	NULL /* terminate */
+};
+
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
 

dwm.c

@@ -273,6 +273,7 @@ static int xerrordummy(Display *dpy, XErrorEvent *ee);
 static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void xinitvisual();
 static void zoom(const Arg *arg);
+static void autostart_exec(void);
 
 static pid_t getparentprocess(pid_t p);
 static int isdescprocess(pid_t p, pid_t c);
@@ -343,6 +344,34 @@ struct Pertag {
 /* compile-time check if all tags fit into an unsigned int bit array. */
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
+/* dwm will keep pid's of processes from autostart array and kill them at quit */
+static pid_t *autostart_pids;
+static size_t autostart_len;
+
+/* execute command from autostart array */
+static void
+autostart_exec() {
+	const char *const *p;
+	size_t i = 0;
+
+	/* count entries */
+	for (p = autostart; *p; autostart_len++, p++)
+		while (*++p);
+
+	autostart_pids = malloc(autostart_len * sizeof(pid_t));
+	for (p = autostart; *p; i++, p++) {
+		if ((autostart_pids[i] = fork()) == 0) {
+			setsid();
+			execvp(*p, (char *const *)p);
+			fprintf(stderr, "dwm: execvp %s\n", *p);
+			perror(" failed");
+			_exit(EXIT_FAILURE);
+		}
+		/* skip arguments */
+		while (*++p);
+	}
+}
+
 /* function implementations */
 void
 applyrules(Client *c)
@@ -1651,13 +1680,20 @@ quit(const Arg *arg)
 	// fix: reloading dwm keeps all the hidden clients hidden
 	Monitor *m;
 	Client *c;
+	size_t i;
+	/* kill child processes */
+	for (i = 0; i < autostart_len; i++) {
+		if (0 < autostart_pids[i]) {
+			kill(autostart_pids[i], SIGTERM);
+			waitpid(autostart_pids[i], NULL, 0);
+		}
+	}
 	for (m = mons; m; m = m->next) {
 		if (m) {
 			for (c = m->stack; c; c = c->next)
 				if (c && HIDDEN(c)) showwin(c);
 		}
 	}
-
 	if(arg->i) restart = 1;
 	running = 0;
 }
@@ -2023,6 +2059,7 @@ void
 setup(void)
 {
 	int i;
+	pid_t pid;
 	XSetWindowAttributes wa;
 	Atom utf8string;
 	struct sigaction sa;
@@ -2034,7 +2071,21 @@ setup(void)
 	sigaction(SIGCHLD, &sa, NULL);
 
 	/* clean up any zombies (inherited from .xinitrc etc) immediately */
-	while (waitpid(-1, NULL, WNOHANG) > 0);
+	while ((pid = waitpid(-1, NULL, WNOHANG)) > 0) {
+		pid_t *p, *lim;
+
+		if (!(p = autostart_pids))
+			continue;
+		lim = &p[autostart_len];
+
+		for (; p < lim; p++) {
+			if (*p == pid) {
+				*p = -1;
+				break;
+			}
+		}
+
+	}
 
 	signal(SIGHUP, sighup);
 	signal(SIGTERM, sigterm);
@@ -3084,6 +3135,7 @@ main(int argc, char *argv[])
 	if (!(xcon = XGetXCBConnection(dpy)))
 		die("dwm: cannot get xcb connection\n");
 	checkotherwm();
+	autostart_exec();
 	setup();
 #ifdef __OpenBSD__
 	if (pledge("stdio rpath proc exec ps", NULL) == -1)

patches/functions/dwm-cool-autostart-20240312-9f88553.diff

@@ -0,0 +1,133 @@
+From feeaa839d2c6c1d0e66649cb64c4added563d4e4 Mon Sep 17 00:00:00 2001
+From: Son Phan Trung <phantrungson17@gmail.com>
+Date: Tue, 12 Mar 2024 18:37:32 +0700
+Subject: [PATCH] patches/cool-autostart: Update patch
+
+Updated for the removal of the sigchld() function.
+---
+ config.def.h |  5 +++++
+ dwm.c        | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++-
+ 2 files changed, 61 insertions(+), 1 deletion(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9efa774..aba210d 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -18,6 +18,11 @@ static const char *colors[][3]      = {
+ 	[SchemeSel]  = { col_gray4, col_cyan,  col_cyan  },
+ };
+ 
++static const char *const autostart[] = {
++	"st", NULL,
++	NULL /* terminate */
++};
++
+ /* tagging */
+ static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
+ 
+diff --git a/dwm.c b/dwm.c
+index f1d86b2..c2eb07d 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -233,6 +233,7 @@ static int xerror(Display *dpy, XErrorEvent *ee);
+ static int xerrordummy(Display *dpy, XErrorEvent *ee);
+ static int xerrorstart(Display *dpy, XErrorEvent *ee);
+ static void zoom(const Arg *arg);
++static void autostart_exec(void);
+ 
+ /* variables */
+ static const char broken[] = "broken";
+@@ -274,6 +275,34 @@ static Window root, wmcheckwin;
+ /* compile-time check if all tags fit into an unsigned int bit array. */
+ struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+ 
++/* dwm will keep pid's of processes from autostart array and kill them at quit */
++static pid_t *autostart_pids;
++static size_t autostart_len;
++
++/* execute command from autostart array */
++static void
++autostart_exec() {
++	const char *const *p;
++	size_t i = 0;
++
++	/* count entries */
++	for (p = autostart; *p; autostart_len++, p++)
++		while (*++p);
++
++	autostart_pids = malloc(autostart_len * sizeof(pid_t));
++	for (p = autostart; *p; i++, p++) {
++		if ((autostart_pids[i] = fork()) == 0) {
++			setsid();
++			execvp(*p, (char *const *)p);
++			fprintf(stderr, "dwm: execvp %s\n", *p);
++			perror(" failed");
++			_exit(EXIT_FAILURE);
++		}
++		/* skip arguments */
++		while (*++p);
++	}
++}
++
+ /* function implementations */
+ void
+ applyrules(Client *c)
+@@ -1258,6 +1287,16 @@ propertynotify(XEvent *e)
+ void
+ quit(const Arg *arg)
+ {
++	size_t i;
++
++	/* kill child processes */
++	for (i = 0; i < autostart_len; i++) {
++		if (0 < autostart_pids[i]) {
++			kill(autostart_pids[i], SIGTERM);
++			waitpid(autostart_pids[i], NULL, 0);
++		}
++	}
++
+ 	running = 0;
+ }
+ 
+@@ -1540,6 +1579,7 @@ void
+ setup(void)
+ {
+ 	int i;
++	pid_t pid;
+ 	XSetWindowAttributes wa;
+ 	Atom utf8string;
+ 	struct sigaction sa;
+@@ -1551,7 +1591,21 @@ setup(void)
+ 	sigaction(SIGCHLD, &sa, NULL);
+ 
+ 	/* clean up any zombies (inherited from .xinitrc etc) immediately */
+-	while (waitpid(-1, NULL, WNOHANG) > 0);
++	while ((pid = waitpid(-1, NULL, WNOHANG)) > 0) {
++		pid_t *p, *lim;
++
++		if (!(p = autostart_pids))
++			continue;
++		lim = &p[autostart_len];
++
++		for (; p < lim; p++) {
++			if (*p == pid) {
++				*p = -1;
++				break;
++			}
++		}
++
++	}
+ 
+ 	/* init screen */
+ 	screen = DefaultScreen(dpy);
+@@ -2152,6 +2206,7 @@ main(int argc, char *argv[])
+ 	if (!(dpy = XOpenDisplay(NULL)))
+ 		die("dwm: cannot open display");
+ 	checkotherwm();
++	autostart_exec();
+ 	setup();
+ #ifdef __OpenBSD__
+ 	if (pledge("stdio rpath proc exec", NULL) == -1)
+-- 
+2.44.0
+