# st

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    commit 9fbafe55c996324a73a0be3af80edcd39e5a393b
    parent d81250e5f96e96dd430a3fc61b5b47ffc04f98d8
    Author: Christoph Lohmann <20h@r-36.net>
    Date:   Sun, 16 Sep 2012 13:22:23 +0200

    Preliminary solution to the stuttering problem.

    Diffstat:
    Mst.c | 27++++++++++++++++++++++++---

    1 file changed, 24 insertions(+), 3 deletions(-)
    diff --git a/st.c b/st.c
    @@ -48,7 +48,7 @@
     #define ESC_ARG_SIZ   16
     #define STR_BUF_SIZ   256
     #define STR_ARG_SIZ   16
    -#define DRAW_BUF_SIZ  1024
    +#define DRAW_BUF_SIZ  20*1024
     #define UTF_SIZ       4
     #define XK_NO_MOD     UINT_MAX
     #define XK_ANY_MOD    0
    @@ -2329,7 +2329,8 @@ void
     run(void) {
     	XEvent ev;
     	fd_set rfd;
    -	int xfd = XConnectionNumber(xw.dpy);
    +	int xfd = XConnectionNumber(xw.dpy), i;
    +	struct timeval drawtimeout;

     	for(;;) {
     		FD_ZERO(&rfd);
    @@ -2340,9 +2341,29 @@ run(void) {
     				continue;
     			die("select failed: %s\n", SERRNO);
     		}
    -		if(FD_ISSET(cmdfd, &rfd))
    +
    +		/*
    +		 * Stop after a certain number of reads so the user does not
    +		 * feel like the system is stuttering.
    +		 */
    +		for(i = 0; i < 1000 && FD_ISSET(cmdfd, &rfd); i++) {
     			ttyread();

    +			FD_ZERO(&rfd);
    +			FD_SET(cmdfd, &rfd);
    +			/*
    +			 * Just wait a bit so it isn't disturbing the
    +			 * user and the system is able to write something.
    +			 */
    +			drawtimeout.tv_sec = 0;
    +			drawtimeout.tv_usec = 5;
    +			if(select(cmdfd+1, &rfd, NULL, NULL, &drawtimeout) < 0) {
    +				if(errno == EINTR)
    +					continue;
    +				die("select failed: %s\n", SERRNO);
    +			}
    +		}
    +
     		while(XPending(xw.dpy)) {
     			XNextEvent(xw.dpy, &ev);
     			if(XFilterEvent(&ev, xw.win))