On Fri, Sep 16, 2016 at 03:48:46PM -0400, Wayne Cuddy wrote: > When vile is linked against ncursesw, version 5.9 64-bit in this case, it > chews up the CPU when highlighting is enabled. > > It's quite reproducible for me: > > - start vile on any file which can be highlighted > - go into insert mode > - make any change to the file (simply moving the cursor does not > trigger the problem) but a single character change will > > Leaving insert mode does not correct the problem. > > It seems to be related to highlighter execution. Turning highlighting > off (set nohl) brings the load back down. > > Using strace I can see that poll() is being executed with a timeout of > 0. According to the man page this causes poll to return immediately so > that explains the load.
Brendan sent me some more information, getting me to look at this chunk:
if (acmilli != 0) {
timeout(acmilli);
for_ever {
result = getch();
if (result < 0) {
autocolor();
} else {
break;
}
}
} else {
nodelay(stdscr, FALSE);
result = getch();
}
A few months ago, I was working on the timeout code in ncurses - old bug - and
may not have fixed it completely (but now I know where to look).
--
Thomas E. Dickey <[email protected]>
http://invisible-island.net
ftp://invisible-island.net
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