[glib] Win32: Port Directory Monitoring to New GLocalFileMonitor
- From: Ryan Lortie <desrt src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [glib] Win32: Port Directory Monitoring to New GLocalFileMonitor
- Date: Fri, 20 Mar 2015 16:40:45 +0000 (UTC)
commit 671292bbb284735aead726f55fbd8c99f9793959
Author: Chun-wei Fan <fanchunwei src gnome org>
Date: Thu Mar 12 19:20:30 2015 +0800
Win32: Port Directory Monitoring to New GLocalFileMonitor
This WIP patch moves the Windows Directory Monitoring code to the new
GLocalFileMonitor mechanism, and adds file monitoring in the process.
Progress from previous patch:
-File renames are now properly supported, but G_FILE_MONITOR_EVENT_MOVED_IN
and G_FILE_MONITOR_EVENT_MOVED_OUT needs to be investigated, as
ReadDirectoryChangesW() seems to send FILE_ACTION_REMOVED when a file is
moved out of a directory.
-Events are handled for both the long and short (8.3) variants of the
filenames, and files monitored will report changes when it is changed
via its short or long filenames.
Things to be done:
-Perhaps find out about attribute changes in files in a monitored
directory; if a file is monitored, attribute changes are correctly
handled.
-Investigate on G_FILE_MONITOR_EVENT_MOVED_OUT,
G_FILE_MONITOR_EVENT_MOVED_IN, G_FILE_MONITOR_EVENT_PRE_UNMOUNT,
G_FILE_MONITOR_EVENT_UNMOUNTED.
-Investigate on the "boredom" algoritm, and see how we can do it on
Windows.
https://bugzilla.gnome.org/show_bug.cgi?id=730116
gio/Makefile.am | 5 +-
gio/win32/Makefile.am | 6 +-
gio/win32/gwin32directorymonitor.c | 244 ---------------------
gio/win32/gwin32directorymonitor.h | 60 -----
gio/win32/gwin32filemonitor.c | 105 +++++++++
gio/win32/gwin32filemonitor.h | 62 ++++++
gio/win32/gwin32fsmonitorutils.c | 422 ++++++++++++++++++++++++++++++++++++
gio/win32/gwin32fsmonitorutils.h | 76 +++++++
8 files changed, 672 insertions(+), 308 deletions(-)
---
diff --git a/gio/Makefile.am b/gio/Makefile.am
index a84830b..44ade08 100644
--- a/gio/Makefile.am
+++ b/gio/Makefile.am
@@ -313,11 +313,12 @@ win32_actual_sources = \
win32_more_sources_for_vcproj = \
gwin32appinfo.c \
gregistrysettingsbackend.c \
- win32/gwin32directorymonitor.c \
win32/gwinhttpfile.c \
win32/gwinhttpfileinputstream.c \
win32/gwinhttpfileoutputstream.c \
- win32/gwinhttpvfs.c
+ win32/gwinhttpvfs.c \
+ win32/gwin32fsmonitorutils.c \
+ win32/gwin32filemonitor.c
if OS_WIN32
appinfo_sources += gwin32appinfo.c gwin32appinfo.h
diff --git a/gio/win32/Makefile.am b/gio/win32/Makefile.am
index a48c68f..2fc10f6 100644
--- a/gio/win32/Makefile.am
+++ b/gio/win32/Makefile.am
@@ -3,8 +3,10 @@ include $(top_srcdir)/glib.mk
noinst_LTLIBRARIES += libgiowin32.la
libgiowin32_la_SOURCES = \
- gwin32directorymonitor.c \
- gwin32directorymonitor.h \
+ gwin32fsmonitorutils.c \
+ gwin32fsmonitorutils.h \
+ gwin32filemonitor.c \
+ gwin32filemonitor.h \
gwinhttpvfs.c \
gwinhttpvfs.h \
gwinhttpfile.c \
diff --git a/gio/win32/gwin32filemonitor.c b/gio/win32/gwin32filemonitor.c
new file mode 100644
index 0000000..1b93b82
--- /dev/null
+++ b/gio/win32/gwin32filemonitor.c
@@ -0,0 +1,105 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Vlad Grecescu <b100dian gmail com>
+ * Author: Chun-wei Fan <fanc999 yahoo com tw>
+ *
+ */
+
+#include "config.h"
+
+#include "gwin32filemonitor.h"
+#include "gwin32fsmonitorutils.h"
+
+#include <windows.h>
+
+G_DEFINE_TYPE_WITH_CODE (GWin32FileMonitor, g_win32_file_monitor, G_TYPE_LOCAL_FILE_MONITOR,
+ g_io_extension_point_implement (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME,
+ g_define_type_id, "win32filemonitor", 20))
+
+static void
+g_win32_file_monitor_start (GLocalFileMonitor *monitor,
+ const gchar *dirname,
+ const gchar *basename,
+ const gchar *filename,
+ GFileMonitorSource *source)
+{
+ GWin32FileMonitor *win32_monitor = G_WIN32_FILE_MONITOR (monitor);
+ gboolean isfile = (filename == NULL && basename == NULL) ? FALSE : TRUE;
+
+ win32_monitor->priv->fms = source;
+
+ if (isfile)
+ if (basename != NULL)
+ g_win32_fs_monitor_init (win32_monitor->priv, dirname, basename, TRUE);
+ else
+ g_win32_fs_monitor_init (win32_monitor->priv, NULL, filename, TRUE);
+ else
+ g_win32_fs_monitor_init (win32_monitor->priv, dirname, NULL, FALSE);
+}
+
+static gboolean
+g_win32_file_monitor_is_supported (void)
+{
+ return TRUE;
+}
+
+static void
+g_win32_file_monitor_init (GWin32FileMonitor* monitor)
+{
+ monitor->priv = g_win32_fs_monitor_create (TRUE);
+
+ monitor->priv->self = G_FILE_MONITOR (monitor);
+}
+
+static void
+g_win32_file_monitor_finalize (GObject *base)
+{
+ GWin32FileMonitor *monitor;
+ monitor = G_WIN32_FILE_MONITOR (base);
+
+ g_win32_fs_monitor_finalize (monitor->priv);
+
+ if (G_OBJECT_CLASS (g_win32_file_monitor_parent_class)->finalize)
+ (*G_OBJECT_CLASS (g_win32_file_monitor_parent_class)->finalize) (base);
+}
+
+static gboolean
+g_win32_file_monitor_cancel (GFileMonitor* monitor)
+{
+ GWin32FileMonitor *file_monitor;
+ file_monitor = G_WIN32_FILE_MONITOR (monitor);
+
+ g_win32_fs_monitor_close_handle (file_monitor->priv);
+
+ return TRUE;
+}
+
+static void
+g_win32_file_monitor_class_init (GWin32FileMonitorClass *klass)
+{
+ GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
+ GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
+ GLocalFileMonitorClass *local_file_monitor_class = G_LOCAL_FILE_MONITOR_CLASS (klass);
+
+ gobject_class->finalize = g_win32_file_monitor_finalize;
+ file_monitor_class->cancel = g_win32_file_monitor_cancel;
+
+ local_file_monitor_class->is_supported = g_win32_file_monitor_is_supported;
+ local_file_monitor_class->start = g_win32_file_monitor_start;
+}
diff --git a/gio/win32/gwin32filemonitor.h b/gio/win32/gwin32filemonitor.h
new file mode 100644
index 0000000..5aef2ba
--- /dev/null
+++ b/gio/win32/gwin32filemonitor.h
@@ -0,0 +1,62 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Chun-wei Fan <fanc999 yahoo com tw>
+ *
+ */
+#ifndef __G_WIN32_FILE_MONITOR_H__
+#define __G_WIN32_FILE_MONITOR_H__
+
+#include <glib.h>
+#include <glib-object.h>
+#include <gio/gio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gio/gfilemonitor.h"
+#include "gio/glocalfilemonitor.h"
+#include "gio/giomodule.h"
+
+#include "gwin32fsmonitorutils.h"
+
+G_BEGIN_DECLS
+
+#define G_TYPE_WIN32_FILE_MONITOR (g_win32_file_monitor_get_type ())
+#define G_WIN32_FILE_MONITOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_WIN32_FILE_MONITOR,
GWin32FileMonitor))
+#define G_WIN32_FILE_MONITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), G_TYPE_WIN32_FILE_MONITOR,
GWin32FileMonitorClass))
+#define G_IS_WIN32_FILE_MONITOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_WIN32_FILE_MONITOR))
+#define G_IS_WIN32_FILE_MONITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), G_TYPE_WIN32_FILE_MONITOR))
+#define G_WIN32_FILE_MONITOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_WIN32_FILE_MONITOR,
GWin32FileMonitorClass))
+
+typedef struct _GWin32FileMonitor GWin32FileMonitor;
+typedef struct _GWin32FileMonitorClass GWin32FileMonitorClass;
+typedef struct _GWin32FileMonitorPrivate GWin32FileMonitorPrivate;
+
+struct _GWin32FileMonitor {
+ GLocalFileMonitor parent_instance;
+ GWin32FSMonitorPrivate * priv;
+};
+struct _GWin32FileMonitorClass {
+ GLocalFileMonitorClass parent_class;
+};
+
+GType g_win32_file_monitor_get_type (void);
+void g_win32_file_monitor_register (GIOModule *module);
+
+G_END_DECLS
+
+#endif /* __G_WIN32_FILE_MONITOR_H__ */
diff --git a/gio/win32/gwin32fsmonitorutils.c b/gio/win32/gwin32fsmonitorutils.c
new file mode 100644
index 0000000..6901561
--- /dev/null
+++ b/gio/win32/gwin32fsmonitorutils.c
@@ -0,0 +1,422 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ * Copyright (C) 2015 Chun-wei Fan
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Vlad Grecescu <b100dian gmail com>
+ * Author: Chun-wei Fan <fanc999 yahoo com tw>
+ *
+ */
+
+#include "config.h"
+
+#include "gwin32fsmonitorutils.h"
+#include "gio/gfile.h"
+
+#include <windows.h>
+
+#define MAX_PATH_LONG 32767 /* Support Paths longer than MAX_PATH (260) characters */
+
+static gboolean
+g_win32_fs_monitor_handle_event (GWin32FSMonitorPrivate *monitor,
+ gchar *filename,
+ PFILE_NOTIFY_INFORMATION pfni)
+{
+ GFileMonitorEvent fme;
+ PFILE_NOTIFY_INFORMATION pfni_next;
+ WIN32_FILE_ATTRIBUTE_DATA attrib_data = {0, };
+ gchar *renamed_file = NULL;
+
+ switch (pfni->Action)
+ {
+ case FILE_ACTION_ADDED:
+ fme = G_FILE_MONITOR_EVENT_CREATED;
+ break;
+
+ case FILE_ACTION_REMOVED:
+ fme = G_FILE_MONITOR_EVENT_DELETED;
+ break;
+
+ case FILE_ACTION_MODIFIED:
+ {
+ gboolean success_attribs = GetFileAttributesExW (monitor->wfullpath_with_long_prefix,
+ GetFileExInfoStandard,
+ &attrib_data);
+
+ if (monitor->file_attribs != INVALID_FILE_ATTRIBUTES &&
+ success_attribs &&
+ attrib_data.dwFileAttributes != monitor->file_attribs)
+ fme = G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED;
+ else
+ fme = G_FILE_MONITOR_EVENT_CHANGED;
+
+ monitor->file_attribs = attrib_data.dwFileAttributes;
+ }
+ break;
+
+ case FILE_ACTION_RENAMED_OLD_NAME:
+ if (pfni->NextEntryOffset != 0)
+ {
+ /* If the file was renamed in the same directory, we would get a
+ * FILE_ACTION_RENAMED_NEW_NAME action in the next FILE_NOTIFY_INFORMATION
+ * structure.
+ */
+ glong file_name_len = 0;
+
+ pfni_next = (PFILE_NOTIFY_INFORMATION) ((BYTE*)pfni + pfni->NextEntryOffset);
+ renamed_file = g_utf16_to_utf8 (pfni_next->FileName, pfni_next->FileNameLength / sizeof(WCHAR),
NULL, &file_name_len, NULL);
+ if (pfni_next->Action == FILE_ACTION_RENAMED_NEW_NAME)
+ fme = G_FILE_MONITOR_EVENT_RENAMED;
+ else
+ fme = G_FILE_MONITOR_EVENT_MOVED_OUT;
+ }
+ else
+ fme = G_FILE_MONITOR_EVENT_MOVED_OUT;
+ break;
+
+ case FILE_ACTION_RENAMED_NEW_NAME:
+ if (monitor->pfni_prev != NULL &&
+ monitor->pfni_prev->Action == FILE_ACTION_RENAMED_OLD_NAME)
+ {
+ /* don't bother sending events, was already sent (rename) */
+ fme = -1;
+ }
+ else
+ fme = G_FILE_MONITOR_EVENT_MOVED_IN;
+ break;
+
+ default:
+ /* The possible Windows actions are all above, so shouldn't get here */
+ g_assert_not_reached ();
+ break;
+ }
+ if (fme != -1)
+ return g_file_monitor_source_handle_event (monitor->fms,
+ fme,
+ filename,
+ renamed_file,
+ NULL,
+ g_get_monotonic_time ());
+ else
+ return FALSE;
+}
+
+
+static void CALLBACK
+g_win32_fs_monitor_callback (DWORD error,
+ DWORD nBytes,
+ LPOVERLAPPED lpOverlapped)
+{
+ gulong offset;
+ PFILE_NOTIFY_INFORMATION pfile_notify_walker;
+ GWin32FSMonitorPrivate *monitor = (GWin32FSMonitorPrivate *) lpOverlapped;
+
+ DWORD notify_filter = monitor->isfile ?
+ (FILE_NOTIFY_CHANGE_FILE_NAME |
+ FILE_NOTIFY_CHANGE_ATTRIBUTES |
+ FILE_NOTIFY_CHANGE_SIZE) :
+ (FILE_NOTIFY_CHANGE_FILE_NAME |
+ FILE_NOTIFY_CHANGE_DIR_NAME |
+ FILE_NOTIFY_CHANGE_ATTRIBUTES |
+ FILE_NOTIFY_CHANGE_SIZE);
+
+ /* If monitor->self is NULL the GWin32FileMonitor object has been destroyed. */
+ if (monitor->self == NULL ||
+ g_file_monitor_is_cancelled (monitor->self) ||
+ monitor->file_notify_buffer == NULL)
+ {
+ g_free (monitor->file_notify_buffer);
+ g_free (monitor);
+ return;
+ }
+
+ offset = 0;
+
+ do
+ {
+ pfile_notify_walker = (PFILE_NOTIFY_INFORMATION)((BYTE*)monitor->file_notify_buffer + offset);
+ if (pfile_notify_walker->Action > 0)
+ {
+ glong file_name_len;
+ gchar *changed_file;
+
+ changed_file = g_utf16_to_utf8 (pfile_notify_walker->FileName, pfile_notify_walker->FileNameLength
/ sizeof(WCHAR), NULL, &file_name_len, NULL);
+
+ if (monitor->isfile)
+ {
+ gint long_filename_length = wcslen (monitor->wfilename_long);
+ gint short_filename_length = wcslen (monitor->wfilename_short);
+ enum GWin32FileMonitorFileAlias alias_state;
+
+ /* If monitoring a file, check that the changed file
+ * in the directory matches the file that is to be monitored
+ * We need to check both the long and short file names for the same file.
+ *
+ * We need to send in the name of the monitored file, not its long (or short) variant,
+ * if they exist.
+ */
+
+ if (_wcsnicmp (pfile_notify_walker->FileName,
+ monitor->wfilename_long,
+ long_filename_length) == 0)
+ {
+ if (_wcsnicmp (pfile_notify_walker->FileName,
+ monitor->wfilename_short,
+ short_filename_length) == 0)
+ {
+ alias_state = G_WIN32_FILE_MONITOR_NO_ALIAS;
+ }
+ else
+ alias_state = G_WIN32_FILE_MONITOR_LONG_FILENAME;
+ }
+ else if (_wcsnicmp (pfile_notify_walker->FileName,
+ monitor->wfilename_short,
+ short_filename_length) == 0)
+ {
+ alias_state = G_WIN32_FILE_MONITOR_SHORT_FILENAME;
+ }
+ else
+ alias_state = G_WIN32_FILE_MONITOR_NO_MATCH_FOUND;
+
+ if (alias_state != G_WIN32_FILE_MONITOR_NO_MATCH_FOUND)
+ {
+ wchar_t *monitored_file_w;
+ gchar *monitored_file;
+
+ switch (alias_state)
+ {
+ case G_WIN32_FILE_MONITOR_NO_ALIAS:
+ monitored_file = g_strdup (changed_file);
+ break;
+ case G_WIN32_FILE_MONITOR_LONG_FILENAME:
+ case G_WIN32_FILE_MONITOR_SHORT_FILENAME:
+ monitored_file_w = wcsrchr (monitor->wfullpath_with_long_prefix, L'\\');
+ monitored_file = g_utf16_to_utf8 (monitored_file_w + 1, -1, NULL, NULL, NULL);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ g_win32_fs_monitor_handle_event (monitor, monitored_file, pfile_notify_walker);
+ g_free (monitored_file);
+ }
+ }
+ else
+ g_win32_fs_monitor_handle_event (monitor, changed_file, pfile_notify_walker);
+
+ g_free (changed_file);
+ }
+ monitor->pfni_prev = pfile_notify_walker;
+ offset += pfile_notify_walker->NextEntryOffset;
+ }
+ while (pfile_notify_walker->NextEntryOffset);
+
+ ReadDirectoryChangesW (monitor->hDirectory,
+ monitor->file_notify_buffer,
+ monitor->buffer_allocated_bytes,
+ FALSE,
+ notify_filter,
+ &monitor->buffer_filled_bytes,
+ &monitor->overlapped,
+ g_win32_fs_monitor_callback);
+}
+
+void
+g_win32_fs_monitor_init (GWin32FSMonitorPrivate *monitor,
+ gchar *dirname,
+ gchar *filename,
+ gboolean isfile)
+{
+ wchar_t *wdirname_with_long_prefix = NULL;
+ const gchar LONGPFX[] = "\\\\?\\";
+ gchar *fullpath_with_long_prefix, *dirname_with_long_prefix;
+ DWORD notify_filter = isfile ?
+ (FILE_NOTIFY_CHANGE_FILE_NAME |
+ FILE_NOTIFY_CHANGE_ATTRIBUTES |
+ FILE_NOTIFY_CHANGE_SIZE) :
+ (FILE_NOTIFY_CHANGE_FILE_NAME |
+ FILE_NOTIFY_CHANGE_DIR_NAME |
+ FILE_NOTIFY_CHANGE_ATTRIBUTES |
+ FILE_NOTIFY_CHANGE_SIZE);
+
+ gboolean success_attribs;
+ WIN32_FILE_ATTRIBUTE_DATA attrib_data = {0, };
+
+
+ if (dirname != NULL)
+ {
+ dirname_with_long_prefix = g_strconcat (LONGPFX, dirname, NULL);
+ wdirname_with_long_prefix = g_utf8_to_utf16 (dirname_with_long_prefix, -1, NULL, NULL, NULL);
+
+ if (isfile)
+ {
+ gchar *fullpath;
+ wchar_t wlongname[MAX_PATH_LONG];
+ wchar_t wshortname[MAX_PATH_LONG];
+ wchar_t *wfullpath, *wbasename_long, *wbasename_short;
+
+ fullpath = g_build_filename (dirname, filename, NULL);
+ fullpath_with_long_prefix = g_strconcat (LONGPFX, fullpath, NULL);
+
+ wfullpath = g_utf8_to_utf16 (fullpath, -1, NULL, NULL, NULL);
+
+ monitor->wfullpath_with_long_prefix =
+ g_utf8_to_utf16 (fullpath_with_long_prefix, -1, NULL, NULL, NULL);
+
+ /* ReadDirectoryChangesW() can return the normal filename or the
+ * "8.3" format filename, so we need to keep track of both these names
+ * so that we can check against them later when it returns
+ */
+ if (GetLongPathNameW (monitor->wfullpath_with_long_prefix, wlongname, MAX_PATH_LONG) == 0)
+ {
+ wbasename_long = wcsrchr (monitor->wfullpath_with_long_prefix, L'\\');
+ monitor->wfilename_long = wbasename_long != NULL ?
+ wcsdup (wbasename_long + 1) :
+ wcsdup (wfullpath);
+ }
+ else
+ {
+ wbasename_long = wcsrchr (wlongname, L'\\');
+ monitor->wfilename_long = wbasename_long != NULL ?
+ wcsdup (wbasename_long + 1) :
+ wcsdup (wlongname);
+
+ }
+
+ if (GetShortPathNameW (monitor->wfullpath_with_long_prefix, wshortname, MAX_PATH_LONG) == 0)
+ {
+ wbasename_short = wcsrchr (monitor->wfullpath_with_long_prefix, L'\\');
+ monitor->wfilename_short = wbasename_short != NULL ?
+ wcsdup (wbasename_short + 1) :
+ wcsdup (wfullpath);
+ }
+ else
+ {
+ wbasename_short = wcsrchr (wshortname, L'\\');
+ monitor->wfilename_short = wbasename_short != NULL ?
+ wcsdup (wbasename_short + 1) :
+ wcsdup (wshortname);
+ }
+
+ g_free (fullpath);
+ }
+ else
+ {
+ monitor->wfilename_short = NULL;
+ monitor->wfilename_long = NULL;
+ monitor->wfullpath_with_long_prefix = g_utf8_to_utf16 (dirname_with_long_prefix, -1, NULL, NULL,
NULL);
+ }
+
+ monitor->isfile = isfile;
+ }
+ else
+ {
+ dirname_with_long_prefix = g_strconcat (LONGPFX, filename, NULL);
+ monitor->wfullpath_with_long_prefix = g_utf8_to_utf16 (dirname_with_long_prefix, -1, NULL, NULL, NULL);
+ monitor->wfilename_long = NULL;
+ monitor->wfilename_short = NULL;
+ monitor->isfile = FALSE;
+ }
+
+ success_attribs = GetFileAttributesExW (monitor->wfullpath_with_long_prefix,
+ GetFileExInfoStandard,
+ &attrib_data);
+ if (success_attribs)
+ monitor->file_attribs = attrib_data.dwFileAttributes; /* Store up original attributes */
+ else
+ monitor->file_attribs = INVALID_FILE_ATTRIBUTES;
+ monitor->pfni_prev = NULL;
+ monitor->hDirectory = CreateFileW (wdirname_with_long_prefix != NULL ? wdirname_with_long_prefix :
monitor->wfullpath_with_long_prefix,
+ FILE_GENERIC_READ | FILE_GENERIC_WRITE,
+ FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+ NULL,
+ OPEN_EXISTING,
+ FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED,
+ NULL);
+
+ if (wdirname_with_long_prefix != NULL)
+ g_free (wdirname_with_long_prefix);
+ g_free (dirname_with_long_prefix);
+
+ if (monitor->hDirectory != INVALID_HANDLE_VALUE)
+ {
+ ReadDirectoryChangesW (monitor->hDirectory,
+ monitor->file_notify_buffer,
+ monitor->buffer_allocated_bytes,
+ FALSE,
+ notify_filter,
+ &monitor->buffer_filled_bytes,
+ &monitor->overlapped,
+ g_win32_fs_monitor_callback);
+ }
+}
+
+GWin32FSMonitorPrivate* g_win32_fs_monitor_create (gboolean isfile)
+{
+ GWin32FSMonitorPrivate* monitor = (GWin32FSMonitorPrivate*) g_new0 (GWin32FSMonitorPrivate, 1);
+ g_assert (monitor != 0);
+
+ monitor->buffer_allocated_bytes = 32784;
+ monitor->file_notify_buffer = g_new0 (FILE_NOTIFY_INFORMATION, monitor->buffer_allocated_bytes);
+ g_assert (monitor->file_notify_buffer);
+
+ return monitor;
+}
+
+void g_win32_fs_monitor_finalize (GWin32FSMonitorPrivate *monitor)
+{
+ if (monitor->hDirectory == INVALID_HANDLE_VALUE)
+ {
+ /* If we don't have a directory handle we can free
+ * monitor->file_notify_buffer and monitor here. The
+ * callback won't be called obviously any more (and presumably
+ * never has been called).
+ */
+ g_free (monitor->file_notify_buffer);
+ monitor->file_notify_buffer = NULL;
+ g_free (monitor);
+ }
+ else
+ {
+ /* If we have a directory handle, the OVERLAPPED struct is
+ * passed once more to the callback as a result of the
+ * CloseHandle() done in the cancel method, so monitor has to
+ * be kept around. The GWin32DirectoryMonitor object is
+ * disappearing, so can't leave a pointer to it in
+ * monitor->self.
+ */
+ monitor->self = NULL;
+ }
+ g_free (monitor->wfullpath_with_long_prefix);
+ if (monitor->wfilename_long != NULL)
+ g_free (monitor->wfilename_long);
+ if (monitor->wfilename_short != NULL)
+ g_free (monitor->wfilename_short);
+}
+
+void g_win32_fs_monitor_close_handle (GWin32FSMonitorPrivate *monitor)
+{
+ /* This triggers a last callback() with nBytes==0. */
+
+ /* Actually I am not so sure about that, it seems to trigger a last
+ * callback allright, but the way to recognize that it is the final
+ * one is not to check for nBytes==0, I think that was a
+ * misunderstanding.
+ */
+ if (monitor->hDirectory != INVALID_HANDLE_VALUE)
+ CloseHandle (monitor->hDirectory);
+}
diff --git a/gio/win32/gwin32fsmonitorutils.h b/gio/win32/gwin32fsmonitorutils.h
new file mode 100644
index 0000000..0606d67
--- /dev/null
+++ b/gio/win32/gwin32fsmonitorutils.h
@@ -0,0 +1,76 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright (C) 2006-2007 Red Hat, Inc.
+ * Copyright (C) 2014 Chun-wei Fan
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Vlad Grecescu <b100dian gmail com>
+ * Author: Chun-wei Fan <fanc999 yahoo com tw>
+ *
+ */
+
+#ifndef __G_WIN32_FS_MONITOR_UTILS_H__
+#define __G_WIN32_FS_MONITOR_UTILS_H__
+
+#include <windows.h>
+
+#include "gio/glocalfilemonitor.h"
+
+#include "gio/gfilemonitor.h"
+
+G_BEGIN_DECLS
+
+typedef struct _GWin32FSMonitorPrivate GWin32FSMonitorPrivate;
+
+struct _GWin32FSMonitorPrivate
+{
+ OVERLAPPED overlapped;
+ DWORD buffer_allocated_bytes;
+ PFILE_NOTIFY_INFORMATION file_notify_buffer;
+ DWORD buffer_filled_bytes;
+ HANDLE hDirectory;
+ gboolean isfile;
+ wchar_t *wfullpath_with_long_prefix;
+ wchar_t *wfilename_short;
+ wchar_t *wfilename_long;
+ DWORD file_attribs;
+ PFILE_NOTIFY_INFORMATION pfni_prev;
+ /* Needed in the APC where we only have this private struct */
+ GFileMonitor *self;
+ GFileMonitorSource *fms;
+};
+
+enum GWin32FileMonitorFileAlias
+{
+ G_WIN32_FILE_MONITOR_NO_ALIAS = 0,
+ G_WIN32_FILE_MONITOR_LONG_FILENAME,
+ G_WIN32_FILE_MONITOR_SHORT_FILENAME,
+ G_WIN32_FILE_MONITOR_NO_MATCH_FOUND
+};
+
+GWin32FSMonitorPrivate* g_win32_fs_monitor_create (gboolean isfile);
+
+void g_win32_fs_monitor_init (GWin32FSMonitorPrivate *monitor,
+ gchar *dirname,
+ gchar *filename,
+ gboolean isfile);
+
+void g_win32_fs_monitor_finalize (GWin32FSMonitorPrivate *monitor);
+
+void g_win32_fs_monitor_close_handle (GWin32FSMonitorPrivate *monitor);
+
+G_END_DECLS
+
+#endif
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