maint: update copyright

[gnulib.git] / lib / sockets.c

diff --git a/lib/sockets.c b/lib/sockets.c
index 42b8f9e..962c578 100644 (file)
--- a/lib/sockets.c
+++ b/lib/sockets.c
@@ -1,6 +1,6 @@
 /* sockets.c --- wrappers for Windows socket functions
 
-   Copyright (C) 2008-2011 Free Software Foundation, Inc.
+   Copyright (C) 2008-2014 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -28,6 +28,7 @@
 # include <sys/socket.h>
 
 # include "fd-hook.h"
+# include "msvc-nothrow.h"
 
 /* Get set_winsock_errno, FD_TO_SOCKET etc. */
 # include "w32sock.h"
@@ -37,6 +38,10 @@ close_fd_maybe_socket (const struct fd_hook *remaining_list,
                        gl_close_fn primary,
                        int fd)
 {
+  /* Note about multithread-safety: There is a race condition where, between
+     our calls to closesocket() and the primary close(), some other thread
+     could make system calls that allocate precisely the same HANDLE value
+     as sock; then the primary close() would call CloseHandle() on it.  */
   SOCKET sock;
   WSANETWORKEVENTS ev;