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use fcntl fallback for additional poll-specific errors

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The 8472 2022-06-07 21:30:07 +02:00
parent d3465a8f21
commit 2e62fdab76
1 changed files with 8 additions and 7 deletions
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15
library/std/src/sys/unix/mod.rs
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@ -88,14 +88,15 @@ pub unsafe fn init(argc: isize, argv: *const *const u8) {
];
while libc::poll(pfds.as_mut_ptr(), 3, 0) == -1 {
if errno() == libc::EINTR {
continue;
match errno() {
libc::EINTR => continue,
libc::EINVAL | libc::EAGAIN | libc::ENOMEM => {
// RLIMIT_NOFILE or temporary allocation failures
// may be preventing use of poll(), fall back to fcntl
break 'poll;
}
_ => libc::abort(),
}
if errno() == libc::EINVAL {
// RLIMIT_NOFILE may be preventing use of poll()
break 'poll;
}
libc::abort();
}
for pfd in pfds {
if pfd.revents & libc::POLLNVAL == 0 {