On 2/23/2019 5:11 PM, Corinna Vinschen wrote: > On Feb 23 21:24, Ken Brown wrote: >> On 2/23/2019 4:01 PM, Corinna Vinschen wrote: >>> On Feb 23 20:48, Ken Brown wrote: >>>> On 2/23/2019 2:15 PM, Corinna Vinschen wrote: >>>>> Below's the NSSTC I used to test my timerfd implementation (based on >>>>> another STC to show a problem in POSIX timers). From what I can tell it >>>>> works as desired. If you find a problem, please point it out or send a >>>>> patch. >>>> >>>> Thanks, that saved me a lot of time. I was in the process of creating a >>>> test >>>> case when your mail arrived. >>>> >>>> Your test works fine. For example: >>>> >>>> $ gcc timerfd_test.c -o timerfd_test >>>> >>>> $ ./timerfd_test.exe 3 1 10 >>>> 0.000: timer started 52379 >>>> 2.988: 52379 read: 1; total=1 >>>> 3.988: 52379 read: 1; total=2 >>>> 4.989: 52379 read: 1; total=3 >>>> 5.987: 52379 read: 1; total=4 >>>> 7.001: 52379 read: 1; total=5 >>>> 7.987: 52379 read: 1; total=6 >>>> 9.001: 52379 read: 1; total=7 >>>> 9.987: 52379 read: 1; total=8 >>>> 10.987: 52379 read: 1; total=9 >>>> 11.997: 52379 read: 1; total=10 >>>> >>>> But if I change CLOCK_MONOTONIC by CLOCK_REALTIME in the call to >>>> timerfd_create, >>>> then I get the following: >>> >>> Only in timerfd_create? Not in clock_gettime? If you don't >>> do that, you're using a different clock with entirely different >>> values for the starttime. >>> >>> Actually, this testcase started with CLOCK_REALTIME in both calls. >>> If I revert to that, I get: >>> >>> )$ ./timerfd 3 1 10 >>> 0.000: timer started 644 >>> 3.001: 644 read: 1; total=1 >>> 4.001: 644 read: 1; total=2 >>> 5.017: 644 read: 1; total=3 >>> 6.001: 644 read: 1; total=4 >>> 7.001: 644 read: 1; total=5 >>> 8.009: 644 read: 1; total=6 >>> 9.002: 644 read: 1; total=7 >>> 10.001: 644 read: 1; total=8 >>> 11.010: 644 read: 1; total=9 >>> 12.017: 644 read: 1; total=10 >>> >>> I tested this STC with differnt clocks, but it's important to >>> use the same cloack for clock_gettime and timerfd_create. >> >> Yes, that was careless of me. I now get the same results as you. I'll have >> to >> go back to the emacs sources and see what else might be different there. > > You're right, nevertheless. Select on timerfd returns immediately. > I (hope I) fixed that in git and uploaded new developer snapshots to > https://cygwin.com/snapshots/ > > Please try especially with emacs.
That fixes the emacs problem. Thanks! Ken
