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ketmar event processing patch

This commit is contained in:
Adam D. Ruppe 2017-03-15 10:07:36 -04:00
parent 2f406ae2ad
commit fe27030b22
1 changed files with 30 additions and 0 deletions
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30
simpledisplay.d
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@ -6040,8 +6040,21 @@ version(X11) {
processCustomEvents(); // process events added before event FD creation
{
this.mtLock();
scope(exit) this.mtUnlock();
XPending(display); // no, really
}
while(!done) {
bool forceXPending = false;
auto wto = eventQueueTimeoutMSecs();
// eh... some events may be queued for "squashing" (or "late delivery"), so we have to do the following magic
{
this.mtLock();
scope(exit) this.mtUnlock();
if (XEventsQueued(this.display, QueueMode.QueuedAlready)) { forceXPending = true; if (wto > 10 || wto <= 0) wto = 10; } // so libX event loop will be able to do it's work
}
//{ import core.stdc.stdio; printf("*** wto=%d; force=%d\n", wto, (forceXPending ? 1 : 0)); }
auto nfds = ep.epoll_wait(epollFd, events.ptr, events.length, (wto == 0 || wto >= int.max ? -1 : cast(int)wto));
if(nfds == -1) {
if(err.errno == err.EINTR) {
@ -6065,6 +6078,7 @@ version(X11) {
while(!done && XPending(display)) {
done = doXNextEvent(this.display);
}
forceXPending = false;
} else if(fd == pulseFd) {
long expirationCount;
// if we go over the count, I ignore it because i don't want the pulse to go off more often and eat tons of cpu time...
@ -6109,6 +6123,16 @@ version(X11) {
throw new Exception("epoll did something else");
}
}
// if we won't call `XPending()` here, libX may delay some internal event delivery.
// i.e. we HAVE to repeatedly call `XPending()` even if libX fd wasn't signalled!
if (!done && forceXPending) {
this.mtLock();
scope(exit) this.mtUnlock();
//{ import core.stdc.stdio; printf("*** queued: %d\n", XEventsQueued(this.display, QueueMode.QueuedAlready)); }
while(!done && XPending(display)) {
done = doXNextEvent(this.display);
}
}
}
} else {
// Generic fallback: yes to simple pulse support,
@ -8019,6 +8043,12 @@ struct Visual
bool XCheckMaskEvent(Display*, int, XEvent*);
int XPending(Display*);
int XEventsQueued(Display* display, int mode);
enum QueueMode : int {
QueuedAlready,
QueuedAfterReading,
QueuedAfterFlush
}
Pixmap XCreatePixmap(Display*, Drawable, uint, uint, uint);
int XFreePixmap(Display*, Pixmap);