path: root/src/ephy-python.c

/*
 *  Copyright © 2004, 2005 Jean-François Rameau
 *  Copyright © 2004, 2005 Adam Hooper
 *  Copyright © 2004, 2005 Crispin Flowerday
 *  Copyright © 2004, 2005 Christian Persch
 *
 *  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, 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.
 *
 *  $Id$
 */

#include <Python.h>

#include "config.h"

#include "ephy-python.h"
#include "ephy-debug.h"

#include <pygobject.h>
#include <pygtk/pygtk.h>

void pyepiphany_register_classes (PyObject *d); 
void pyepiphany_add_constants (PyObject *module, const gchar *strip_prefix);

extern PyMethodDef pyepiphany_functions[];

static guint idle_gc_handler       = 0;
static guint idle_shutdown_handler = 0;
static gboolean python_initialised = FALSE;

void
ephy_python_init (void)
{
    char *argv[1];
    PyObject *m, *d;
    
    Py_Initialize();
    python_initialised = TRUE;

    argv[0] = g_get_prgname ();
    PySys_SetArgv (1, argv);

    init_pygobject ();
    init_pygtk ();

    m = Py_InitModule ("epiphany", pyepiphany_functions);
    d = PyModule_GetDict (m);

    pyepiphany_register_classes (d);
    pyepiphany_add_constants (m, "EPHY_");
}

static gboolean
idle_shutdown (void)
{
    g_return_val_if_fail (idle_gc_handler == 0, FALSE);

    Py_Finalize ();

    idle_shutdown_handler = 0;
    return FALSE;
}

void
ephy_python_shutdown (void)
{
    if (!python_initialised) return;

    g_return_if_fail (idle_shutdown_handler == 0);

    LOG ("EphyPython shutdown with %s GC scheduled",
         idle_gc_handler != 0 ? "a" : "no");

    if (idle_gc_handler != 0)
    {
        /* Process remaining GCs now */
        while (PyGC_Collect ()) ;

        g_source_remove (idle_gc_handler);
        idle_gc_handler = 0;

        /* IMPORTANT! We get here while running PyGC_Collect from idle!
         * Don't do Py_Finalize while inside python!
         */
        idle_shutdown_handler = g_idle_add ((GSourceFunc) idle_shutdown, NULL);
    }
    else
    {
        Py_Finalize();
    }
}

static gboolean
idle_gc (void)
{
    long value;

    /* LOG ("Running GC from idle"); */

    /* FIXME what does the return value of PyGC_Collect mean? */
    value = PyGC_Collect ();

    /* LOG ("Idle GC returned %ld", value); */

    if (value == 0)
    {
        idle_gc_handler = 0;
    }

    return value != 0;
}

void
ephy_python_schedule_gc (void)
{
    /* LOG ("Scheduling a GC with %s GC already scheduled", idle_gc_handler != 0 ? "a" : "no"); */

    if (python_initialised && idle_gc_handler == 0)
    {
        idle_gc_handler = g_idle_add ((GSourceFunc) idle_gc, NULL);
    }
}