Peter Eisentraut wrote: > Bruce Momjian writes: > > > First get your own platforms enabled for the existing thread flag, and > > we can revisit this when most/all our platforms are supported. We want > > to avoid confusion of having things work for some platforms and not > > others with no way to communicate that to the users. > > Yes, let's settle on that for now (= release 7.4): Without > --enable-thread-safety, you get the same old; with --enable-thread-safety, > you get _REENTRANT (or equivalent) for libpq and libecpg, and you get > pthreads in libecpg. Then users and packagers can judge the impact on > their platform for themselves. While the release is out there, we can > gather more data on this and information for the forgotten platforms, and > then for 7.5 we might have something that pleases more people by default.
OK. > Where I see this going, however, is three buckets: one group of platforms > will have near zero impact and there will be pressure to enable thread > safety by default (BSD/OS, Linux, UnixWare), a second group of platforms > where there will be an endless debate about which is right (FreeBSD, AIX), > and a third group of platforms that have no thread-safety no matter how > hard you look (mostly the old ones). So in the end we will either have to > document "libpq is thread-safe on platform A, B, and C", or we will have > to keep the switch for all platforms and leave it off by default. I am hoping groups 1 and 2 can be merged. I think a good rule is that if libc is threadsafe, we can someday enable libpq to be thread-safe by default, and if there is a libc_r that is thread-safe, we create a libpq_r for that. In fact, I thought we were going to try that for 7.4 when --enable-thread-safety is added to configure. Perhaps by 7.5 we can enable the above logic by default. However, I do think we will have to mention the platforms that aren't thread-safe some day, of course, once we enable thread-safe by default. -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
