commit d9ce4bb

skip processing if pty buffer unchanged

 1@@ -2,6 +2,7 @@
 2 #include <errno.h>
 3 #include <fcntl.h>
 4 #include <locale.h>
 5+#include <poll.h>
 6 #include <stdbool.h>
 7 #include <stdint.h>
 8 #include <stdlib.h>
 9@@ -34,6 +35,7 @@ static void resize_pty(void);
10 static int resize_surface(int w, int h);
11 static void resize_terminal(int w, int h);
12 static void run(void);
13+static void wait(void);
14 
15 static Fontface font;
16 static Caret car;
17@@ -341,8 +343,10 @@ static void run(void)
18 			dirty = true;
19 		}
20 
21-		if (!dirty)
22+		if (!dirty) {
23+			wait();
24 			continue;
25+		}
26 
27 		if (redraw_all) {
28 			draw_clear(pixels, winw, winh, rgba(0, 0, 0, 255));
29@@ -387,6 +391,29 @@ static void run(void)
30 	}
31 }
32 
33+/**
34+ * @brief wait for activity while allowing window events
35+ */
36+static void wait(void)
37+{
38+	struct pollfd pfd = {
39+		.fd = term.ptyfd,
40+		.events = POLLIN,
41+	};
42+
43+	if (term.ptyfd < 0) {
44+		RGFW_waitForEvent(16);
45+		return;
46+	}
47+
48+	for (;;) {
49+		int ret = poll(&pfd, 1, 16);
50+		if (ret < 0 && errno == EINTR)
51+			continue;
52+		break;
53+	}
54+}
55+
56 int main(int argc, char* argv[])
57 {
58 	/* TODO: pledges */