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/* GNOME personal calendar server - job manager
*
* Copyright (C) 2000 Helix Code, Inc.
* Copyright (C) 2000 Ximian, Inc.
*
* Author: Federico Mena-Quintero <federico@ximian.com>
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include "job.h"
/* The job list */
typedef struct {
JobFunc func;
gpointer data;
} Job;
static GSList *jobs_head;
static GSList *jobs_tail;
static guint jobs_idle_id;
/* Runs a job and dequeues it */
static gboolean
run_job (gpointer data)
{
Job *job;
GSList *l;
g_assert (jobs_head != NULL);
job = jobs_head->data;
(* job->func) (job->data);
g_free (job);
l = jobs_head;
jobs_head = g_slist_remove_link (jobs_head, jobs_head);
g_slist_free_1 (l);
if (!jobs_head) {
jobs_tail = NULL;
jobs_idle_id = 0;
return FALSE;
} else
return TRUE;
}
/**
* job_add:
* @func: Function to run the job.
* @data: Data to pass to @function.
*
* Adds a job to the queue. The job will automatically be run asynchronously.
**/
void
job_add (JobFunc func, gpointer data)
{
Job *job;
g_return_if_fail (func != NULL);
job = g_new (Job, 1);
job->func = func;
job->data = data;
if (!jobs_head) {
g_assert (jobs_tail == NULL);
g_assert (jobs_idle_id == 0);
jobs_head = g_slist_append (NULL, job);
jobs_tail = jobs_head;
jobs_idle_id = g_idle_add (run_job, NULL);
} else {
g_assert (jobs_tail != NULL);
g_assert (jobs_idle_id != 0);
jobs_tail = g_slist_append (jobs_tail, job)->next;
}
}
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