initial commit

patch/bar_dwmblocks.c

@@ -0,0 +1,51 @@
+static int statussig;
+pid_t statuspid = -1;
+
+pid_t
+getstatusbarpid()
+{
+	char buf[32], *str = buf, *c;
+	FILE *fp;
+
+	if (statuspid > 0) {
+		snprintf(buf, sizeof(buf), "/proc/%u/cmdline", statuspid);
+		if ((fp = fopen(buf, "r"))) {
+			fgets(buf, sizeof(buf), fp);
+			while ((c = strchr(str, '/')))
+				str = c + 1;
+			fclose(fp);
+			if (!strcmp(str, STATUSBAR))
+				return statuspid;
+		}
+	}
+	if (!(fp = popen("pgrep -o "STATUSBAR, "r")))
+		return -1;
+	fgets(buf, sizeof(buf), fp);
+	pclose(fp);
+	return strtol(buf, NULL, 10);
+}
+
+void
+sigstatusbar(const Arg *arg)
+{
+	union sigval sv;
+
+	if (!statussig)
+		return;
+	if ((statuspid = getstatusbarpid()) <= 0)
+		return;
+
+	#if BAR_DWMBLOCKS_SIGUSR1_PATCH
+	sv.sival_int = (statussig << 8) | arg->i;
+	if (sigqueue(statuspid, SIGUSR1, sv) == -1) {
+		if (errno == ESRCH) {
+			if (!getstatusbarpid())
+				sigqueue(statuspid, SIGUSR1, sv);
+		}
+	}
+	#else
+	sv.sival_int = arg->i;
+	sigqueue(statuspid, SIGRTMIN+statussig, sv);
+	#endif // BAR_DWMBLOCKS_SIGUSR1_PATCH
+}
+