On 25 Dec 2015, at 21:40, Holger Freyther holger@freyther.de wrote:
Dear Eliot,
- if (((now = ioUTCMicroseconds())) >= GIV(nextPollUsecs)) {
- if (doDispatch) {
GIV(statIOProcessEvents) += 1; ioProcessEvents();doDispatch = 0;
/* msecs to wait before next call to ioProcessEvents. Note that strictly
speaking we might need to update 'now' at this point since
ioProcessEvents could take a very long time on some platforms */
}GIV(nextPollUsecs) = now + 20000;
now = ioUTCMicroseconds();
if (GIV(interruptPending)) {
could you please help me with getting the above right and help me to get it into the VMMaker? I wonder which atomic interface to use between the aioPoll code and the VMMaker without breaking the Windows/OSX build right now.
1.) I think I don't want the time based polling but only if something has happened
2.) In the SIGIO signal handler I will need to register an event. I'm wondering if I want to use: __sync_fetch_and_add to count the number of SIGIOs not handled? otherwise the classic loop with __sync_bool_compare_and_swap?
3.) In the VMMaker and only if the SIGIO interface is present. I think I need to use sqCompareAndSwap to try to read the number of events?
4.) Which variables (and addresses) can be used and where would I keep them?
kind regards holger