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0dce44800b
This removes a lot of similar-looking code. This also means that there is no longer any code inside of GIO that is handling fds from GCancellable. That moves us closer to being able to completely rid ourselves of per-cancellable file descriptors. Windows parts are completely untested (and not even compiled). https://bugzilla.gnome.org/show_bug.cgi?id=741716
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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*/
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#include "config.h"
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#include "gasynchelper.h"
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/*< private >
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* SECTION:gasynchelper
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* @short_description: Asynchronous Helper Functions
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* @include: gio/gio.h
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* @see_also: #GAsyncResult
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*
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* Provides helper functions for asynchronous operations.
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*
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**/
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#ifdef G_OS_WIN32
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gboolean
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_g_win32_overlap_wait_result (HANDLE hfile,
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OVERLAPPED *overlap,
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DWORD *transferred,
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GCancellable *cancellable)
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{
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GPollFD pollfd;
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gboolean result = FALSE;
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pollfd.fd = (gint)overlap->hEvent;
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pollfd.events = G_IO_IN;
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loop:
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g_cancellable_poll_simple (cancellable, &pollfd, -1, NULL);
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if (g_cancellable_is_cancelled (cancellable))
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{
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/* CancelIO only cancels pending operations issued by the
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* current thread and since we're doing only sync operations,
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* this is safe.... */
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/* CancelIoEx is only Vista+. Since we have only one overlap
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* operaton on this thread, we can just use: */
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result = CancelIo (hfile);
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g_warn_if_fail (result);
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}
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result = GetOverlappedResult (overlap->hEvent, overlap, transferred, FALSE);
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if (result == FALSE &&
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GetLastError () == ERROR_IO_INCOMPLETE &&
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!g_cancellable_is_cancelled (cancellable))
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goto loop;
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return result;
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}
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#endif
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