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Make forking off threads reliable on Windows

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This change makes posix_spawn_test no longer flaky on Windows, by (1)
fixing a race condition in wait(), and (2) removing a misguided vfork
implementation which was letting Windows bypass pthread_atfork().
This commit is contained in:
Justine Tunney 2023-07-30 08:55:01 -07:00
parent 2ebc5781a1
commit 58352df0a4
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GPG key ID: BE714B4575D6E328
30 changed files with 230 additions and 187 deletions
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3
libc/sock/recvfrom-nt.c
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@ -46,7 +46,8 @@ textwindows ssize_t sys_recvfrom_nt(struct Fd *fd, const struct iovec *iov,
} else {
errno = err;
sockfd = (struct SockFd *)fd->extra;
rc = __wsablock(fd, &overlapped, &flags, true, sockfd->rcvtimeo);
rc = __wsablock(fd, &overlapped, &flags, kSigOpRestartable,
sockfd->rcvtimeo);
}
WSACloseEvent(overlapped.hEvent);
return rc;