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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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2
libc/sock/accept-nt.c
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@ -67,7 +67,7 @@ textwindows int sys_accept_nt(struct Fd *fd, struct sockaddr_storage *addr,
if (!AcceptEx(fd->handle, handle, &buffer, 0, sizeof(buffer.local),
sizeof(buffer.remote), &bytes_received, &overlapped)) {
sockfd = (struct SockFd *)fd->extra;
if (__wsablock(fd, &overlapped, &completion_flags, true,
if (__wsablock(fd, &overlapped, &completion_flags, kSigOpRestartable,
sockfd->rcvtimeo) == -1) {
WSACloseEvent(overlapped.hEvent);
__sys_closesocket_nt(handle);