diff options
Diffstat (limited to 'src/internal/poll/fd_unix.go')
| -rw-r--r-- | src/internal/poll/fd_unix.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/internal/poll/fd_unix.go b/src/internal/poll/fd_unix.go index f6f6c52f31..2e77e76c87 100644 --- a/src/internal/poll/fd_unix.go +++ b/src/internal/poll/fd_unix.go @@ -74,7 +74,14 @@ func (fd *FD) destroy() error { // Poller may want to unregister fd in readiness notification mechanism, // so this must be executed before CloseFunc. fd.pd.close() + + // We don't use ignoringEINTR here because POSIX does not define + // whether the descriptor is closed if close returns EINTR. + // If the descriptor is indeed closed, using a loop would race + // with some other goroutine opening a new descriptor. + // (The Linux kernel guarantees that it is closed on an EINTR error.) err := CloseFunc(fd.Sysfd) + fd.Sysfd = -1 runtime_Semrelease(&fd.csema) return err |