On Tue, 25 Apr 2000, Tim Peters wrote: > [Greg Stein] > > ... > > Many people have asked for free-threading, and the number of inquiries > > that I receive have grown over time. (nobody asked in 1996 when I first > > published my patches; I get a query every couple months now) > > Huh! That means people ask me about it more often than they ask you <wink>. > > I'll add, though, that you have to dig into the inquiry: almost everyone > who asks me is running on a uniprocessor machine, and are really after one > of two other things: > > 1. They expect threaded stuff to run faster if free-threaded. "Why?" is > a question I can't answer <0.5 wink>. Heh. Yes, I definitely see this one. But there are some clueful people out there, too, so I'm not totally discouraged :-) > 2. Dealing with the global lock drives them insane, especially when trying > to call back into Python from a "foreign" C thread. > > #2 may be fixable via less radical means (like a streamlined procedure > enabled by some relatively minor core interpreter changes, and clearer > docs). No doubt. I was rather upset with Guido's "Swap" API for the thread state. Grr. I sent him a very nice (IMO) API that I used for my patches. The Swap was simply a poor choice on his part. It implies that you are swapping a thread state for another (specifically: the "current" thread state). Of course, that is wholly inappropriate in a free-threading environment. All those calls to _Swap() will be overhead in an FT world. I liked my "PyThreadState *PyThreadState_Ensure()" function. It would create the sucker if it didn't exist, then return *this* thread's state to you. Handy as hell. No monkeying around with "Get. oops. didn't exist. let's create one now." > I'm still a fan of free-threading! It's just one of those things that may > yield a "well, ya, that's what I asked for, but turns out it's not what I > *wanted*" outcome as often as not. hehe. Damn straight. :-) Cheers, -g -- Greg Stein, http://www.lyra.org/
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