glib/gio/fen/fen-missing.c

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/* -*- 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-missing.h"
G_LOCK_EXTERN (fen_lock);
#define SCAN_MISSING_INTERVAL 4000 /* in milliseconds */
#ifdef GIO_COMPILATION
#define FM_W if (fm_debug_enabled) g_warning
gboolean fm_debug_enabled = FALSE;
#else
#include "gam_error.h"
#define FM_W(...) GAM_DEBUG(DEBUG_INFO, __VA_ARGS__)
#endif
/* global data structure for scan missing files */
static GList *missing_list = NULL;
static guint scan_missing_source_id = 0;
static gboolean scan_missing_list (gpointer data);
static gboolean
scan_missing_list (gpointer data)
{
GList *existing_list = NULL;
GList *idx = NULL;
fdata *f;
gboolean ret = TRUE;
G_LOCK (fen_lock);
for (idx = missing_list; idx; idx = idx->next) {
f = (fdata*)idx->data;
if (_port_add (&f->fobj, &f->len, f)) {
/* TODO - emit CREATE event */
_fdata_emit_events (f, FN_EVENT_CREATED);
existing_list = g_list_prepend (existing_list, idx);
}
}
for (idx = existing_list; idx; idx = idx->next) {
missing_list = g_list_remove_link (missing_list, (GList *)idx->data);
g_list_free_1 ((GList *)idx->data);
}
g_list_free (existing_list);
if (missing_list == NULL) {
scan_missing_source_id = 0;
ret = FALSE;
}
G_UNLOCK (fen_lock);
return ret;
}
/**
* missing_add
*
* Unsafe, need lock fen_lock.
*/
void
_missing_add (fdata *f)
{
GList *idx;
g_assert (!_is_ported (f));
if (g_list_find (missing_list, f) != NULL) {
FM_W ("%s is ALREADY added %s\n", __func__, FN_NAME(f));
return;
}
FM_W ("%s is added %s\n", __func__, FN_NAME(f));
missing_list = g_list_prepend (missing_list, f);
/* if doesn't scan, then start */
if (scan_missing_source_id == 0) {
scan_missing_source_id = g_timeout_add (SCAN_MISSING_INTERVAL,
scan_missing_list,
NULL);
g_assert (scan_missing_source_id > 0);
}
}
/**
* missing_remove
*
* Unsafe, need lock fen_lock.
*/
void
_missing_remove (fdata *f)
{
FM_W ("%s %s\n", __func__, FN_NAME(f));
missing_list = g_list_remove (missing_list, f);
}