glib/gio/fen/fen-helper.c
Lin Ma 4654a7d593 Fixed a missing head which will cause crashes for 64bit applications
Without that head, the returned pointer will be truncated to 32bit, then
causes crashes for 64bit applications.
2009-07-21 10:45:25 +08:00

338 lines
9.4 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set expandtab ts=4 shiftwidth=4: */
/*
* Copyright (C) 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors: Lin Ma <lin.ma@sun.com>
*/
#include "config.h"
#include <glib.h>
#include "fen-data.h"
#include "fen-helper.h"
#include "fen-kernel.h"
#ifdef GIO_COMPILATION
#include "gfile.h"
#include "gfilemonitor.h"
#else
#include "gam_event.h"
#include "gam_server.h"
#include "gam_protocol.h"
#endif
#ifdef GIO_COMPILATION
#define FH_W if (fh_debug_enabled) g_warning
static gboolean fh_debug_enabled = FALSE;
#else
#include "gam_error.h"
#define FH_W(...) GAM_DEBUG(DEBUG_INFO, __VA_ARGS__)
#endif
G_LOCK_EXTERN (fen_lock);
static void default_emit_event_cb (fdata *f, int events);
static void default_emit_once_event_cb (fdata *f, int events, gpointer sub);
static int default_event_converter (int event);
static void
scan_children_init (node_t *f, gpointer sub)
{
GDir *dir;
GError *err = NULL;
node_op_t op = {NULL, NULL, _pre_del_cb, NULL};
fdata* pdata;
FH_W ("%s %s [0x%p]\n", __func__, NODE_NAME(f), f);
pdata = _node_get_data (f);
dir = g_dir_open (NODE_NAME(f), 0, &err);
if (dir) {
const char *basename;
while ((basename = g_dir_read_name (dir)))
{
node_t *childf = NULL;
fdata* data;
GList *idx;
childf = _children_find (f, basename);
if (childf == NULL) {
gchar *filename;
filename = g_build_filename (NODE_NAME(f), basename, NULL);
childf = _add_node (f, filename);
g_assert (childf);
g_free (filename);
}
if ((data = _node_get_data (childf)) == NULL) {
data = _fdata_new (childf, FALSE);
}
if (is_monitoring (data)) {
/* Ignored */
} else if (/* !_is_ported (data) && */
_port_add (&data->fobj, &data->len, data)) {
/* Emit created to all other subs */
_fdata_emit_events (data, FN_EVENT_CREATED);
}
/* Emit created to the new sub */
#ifdef GIO_COMPILATION
/* _fdata_emit_events_once (data, FN_EVENT_CREATED, sub); */
#else
gam_server_emit_one_event (NODE_NAME(childf),
gam_subscription_is_dir (sub), GAMIN_EVENT_EXISTS, sub, 1);
#endif
}
g_dir_close (dir);
} else {
FH_W (err->message);
g_error_free (err);
}
}
/**
* _fen_add
*
* Won't hold a ref, we have a timout callback to clean unused fdata.
* If there is no value for a key, add it and return it; else return the old
* one.
*/
void
_fen_add (const gchar *filename, gpointer sub, gboolean is_mondir)
{
node_op_t op = {NULL, _add_missing_cb, _pre_del_cb, (gpointer)filename};
node_t* f;
fdata* data;
g_assert (filename);
g_assert (sub);
G_LOCK (fen_lock);
f = _find_node_full (filename, &op);
FH_W ("[ %s ] f[0x%p] sub[0x%p] %s\n", __func__, f, sub, filename);
g_assert (f);
data = _node_get_data (f);
if (data == NULL) {
data = _fdata_new (f, is_mondir);
}
if (is_mondir) {
data->mon_dir_num ++;
}
/* Change to active */
#ifdef GIO_COMPILATION
if (_port_add (&data->fobj, &data->len, data) ||
g_file_test (FN_NAME(data), G_FILE_TEST_EXISTS)) {
if (is_mondir) {
scan_children_init (f, sub);
}
_fdata_sub_add (data, sub);
} else {
_fdata_sub_add (data, sub);
_fdata_adjust_deleted (data);
}
#else
if (_port_add (&data->fobj, &data->len, data) ||
g_file_test (FN_NAME(data), G_FILE_TEST_EXISTS)) {
gam_server_emit_one_event (FN_NAME(data),
gam_subscription_is_dir (sub), GAMIN_EVENT_EXISTS, sub, 1);
if (is_mondir) {
scan_children_init (f, sub);
}
gam_server_emit_one_event (FN_NAME(data),
gam_subscription_is_dir (sub), GAMIN_EVENT_ENDEXISTS, sub, 1);
_fdata_sub_add (data, sub);
} else {
_fdata_sub_add (data, sub);
gam_server_emit_one_event (FN_NAME(data),
gam_subscription_is_dir (sub), GAMIN_EVENT_DELETED, sub, 1);
_fdata_adjust_deleted (data);
gam_server_emit_one_event (FN_NAME(data),
gam_subscription_is_dir (sub), GAMIN_EVENT_ENDEXISTS, sub, 1);
}
#endif
G_UNLOCK (fen_lock);
}
void
_fen_remove (const gchar *filename, gpointer sub, gboolean is_mondir)
{
node_op_t op = {NULL, _add_missing_cb, _pre_del_cb, (gpointer)filename};
node_t* f;
fdata* data;
g_assert (filename);
g_assert (sub);
G_LOCK (fen_lock);
f = _find_node (filename);
FH_W ("[ %s ] f[0x%p] sub[0x%p] %s\n", __func__, f, sub, filename);
g_assert (f);
data = _node_get_data (f);
g_assert (data);
if (is_mondir) {
data->mon_dir_num --;
}
_fdata_sub_remove (data, sub);
if (FN_IS_PASSIVE(data)) {
#ifdef GIO_COMPILATION
_pending_remove_node (f, &op);
#else
_remove_node (f, &op);
#endif
}
G_UNLOCK (fen_lock);
}
static gboolean
fen_init_once_func (gpointer data)
{
FH_W ("%s\n", __func__);
if (!_node_class_init ()) {
FH_W ("_node_class_init failed.");
return FALSE;
}
if (!_fdata_class_init (default_emit_event_cb,
default_emit_once_event_cb,
default_event_converter)) {
FH_W ("_fdata_class_init failed.");
return FALSE;
}
return TRUE;
}
gboolean
_fen_init ()
{
#ifdef GIO_COMPILATION
static GOnce fen_init_once = G_ONCE_INIT;
g_once (&fen_init_once, (GThreadFunc)fen_init_once_func, NULL);
return (gboolean)fen_init_once.retval;
#else
return fen_init_once_func (NULL);
#endif
}
static void
default_emit_once_event_cb (fdata *f, int events, gpointer sub)
{
#ifdef GIO_COMPILATION
GFile* child;
fen_sub* _sub = (fen_sub*)sub;
child = g_file_new_for_path (FN_NAME(f));
g_file_monitor_emit_event (G_FILE_MONITOR (_sub->user_data),
child, NULL, events);
g_object_unref (child);
#else
gam_server_emit_one_event (FN_NAME(f),
gam_subscription_is_dir (sub), events, sub, 1);
#endif
}
static void
default_emit_event_cb (fdata *f, int events)
{
GList* i;
fdata* pdata;
#ifdef GIO_COMPILATION
GFile* child;
child = g_file_new_for_path (FN_NAME(f));
for (i = f->subs; i; i = i->next) {
fen_sub* sub = (fen_sub*)i->data;
gboolean file_is_dir = sub->is_mondir;
if ((events != G_FILE_MONITOR_EVENT_CHANGED &&
events != G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED) ||
!file_is_dir) {
g_file_monitor_emit_event (G_FILE_MONITOR (sub->user_data),
child, NULL, events);
}
}
if ((pdata = _get_parent_data (f)) != NULL) {
for (i = pdata->subs; i; i = i->next) {
fen_sub* sub = (fen_sub*)i->data;
gboolean file_is_dir = sub->is_mondir;
g_file_monitor_emit_event (G_FILE_MONITOR (sub->user_data),
child, NULL, events);
}
}
g_object_unref (child);
#else
for (i = f->subs; i; i = i->next) {
gboolean file_is_dir = gam_subscription_is_dir (i->data);
if (events != GAMIN_EVENT_CHANGED || !file_is_dir) {
gam_server_emit_one_event (FN_NAME(f), file_is_dir, events, i->data, 1);
}
}
if ((pdata = _get_parent_data (f)) != NULL) {
for (i = pdata->subs; i; i = i->next) {
gboolean file_is_dir = gam_subscription_is_dir (i->data);
gam_server_emit_one_event (FN_NAME(f), file_is_dir, events, i->data, 1);
}
}
#endif
}
static int
default_event_converter (int event)
{
#ifdef GIO_COMPILATION
switch (event) {
case FN_EVENT_CREATED:
return G_FILE_MONITOR_EVENT_CREATED;
case FILE_DELETE:
case FILE_RENAME_FROM:
return G_FILE_MONITOR_EVENT_DELETED;
case UNMOUNTED:
return G_FILE_MONITOR_EVENT_UNMOUNTED;
case FILE_ATTRIB:
return G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED;
case MOUNTEDOVER:
case FILE_MODIFIED:
case FILE_RENAME_TO:
return G_FILE_MONITOR_EVENT_CHANGED;
default:
/* case FILE_ACCESS: */
g_assert_not_reached ();
return -1;
}
#else
switch (event) {
case FN_EVENT_CREATED:
return GAMIN_EVENT_CREATED;
case FILE_DELETE:
case FILE_RENAME_FROM:
return GAMIN_EVENT_DELETED;
case FILE_ATTRIB:
case MOUNTEDOVER:
case UNMOUNTED:
case FILE_MODIFIED:
case FILE_RENAME_TO:
return GAMIN_EVENT_CHANGED;
default:
/* case FILE_ACCESS: */
g_assert_not_reached ();
return -1;
}
#endif
}