| Summary: | XIfEvent() uses CPU too much | ||
|---|---|---|---|
| Product: | xorg | Reporter: | Yuuki Harano <masmer> |
| Component: | Lib/Xlib | Assignee: | Xorg Project Team <xorg-team> |
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> |
| Severity: | normal | ||
| Priority: | medium | CC: | psyke |
| Version: | 7.2 (2007.02) | ||
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
You're right: Xlib/XCB had a performance bug that code like yours (and metacity) triggered. Josh and I believe it is now fixed in libX11 git, and we'll release a new version after some more testing. *** Bug 10173 has been marked as a duplicate of this bug. *** JFI: this appears to be this commit: http://gitweb.freedesktop.org/?p=xcb/libxcb.git;a=commitdiff;h=e20a31d72b8838cdf31b568431b5ad78492c1481 Hmm.. probably not, but rather one from http://gitweb.freedesktop.org/?p=xorg/lib/libX11.git;a=log Would be nice to post a commit link for reference, if a bug gets closed. |
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This code uses CPU too much until I click the window. #include <X11/Xlib.h> static Bool check(Display *dpy, XEvent *ev, XPointer arg) { return ev->type == ButtonPress; } int main(void) { Display *dpy = XOpenDisplay(NULL); Window win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 100, 100, 0, 0, 0); XSelectInput(dpy, win, ExposureMask | ButtonPressMask); XMapWindow(dpy, win); XEvent ev; XIfEvent(dpy, &ev, check, NULL); return 0; } X11R7.2 slackware 11.0 linux kernel 2.6.20.6 glibc 2.5 gcc 4.1.2 ThinkPad X40