st

My build of suckless' 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))