Hi all, I just stumbled across this mail in the archive. I have not received it, and the sending e-mail address seems just "picolisp".
> picolisp Sun, 11 Apr 2021 15:05:25 -0700 > > I am trying to fix infinite select errors about 292MY. > > On my mac (int)9223372036854775807 == -1 which means no timeout. This is strange! The number 292MY is the biggest *positive* 64-bit number. A call to waitFd() is compiled to e.g.: call i64 @waitFd(i64 %0, i32 -1, i64 9223372036854775807) Does this mean the Mac uses only the lowest 32 bits? Also, -1 does *not* mean "no timeout". It means infinite timeout. > Why not simply use -1? This would not work, because waitFd() compares the value to all other timeouts in the task list. So it needs a big positive number. > When Ms decrement to 9223372036854775806, (int)timeout becomes -2 which is > less > than -1, then poll() returns EINVAL. This is equally strange! The man page of poll() says "Specifying a negative value in timeout means an infinite timeout". -2 or any other negative number does no harm. > src/lib.c: warning: '&' within '|' [-Wbitwise-op-parentheses] I hate compilers treating me like a child! ;) In summary, the problem seems to be that 'int's on the Mac are only 32 bit. But that would break many other things, no? Any other Mac users here? I thought pil21 runs on the Mac (?). ☺/ A!ex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
