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/*
*
* detach
* Copyright (C) 2005 Georg Holzmann, <grh@mur.at>
* Copyright (C) 2005 Tim Blechmann
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "threadlib.h"
static t_class *detach_class;
typedef t_fifo fifo_t; /* for emacs syntax highlighting */
typedef struct _detach
{
t_object x_obj;
t_outlet * x_outlet;
pthread_t x_thread;
pthread_mutex_t x_mutex;
pthread_cond_t x_cond;
fifo_t * x_fifo;
} detach_t;
typedef struct _detach_content
{
struct _detach_content_t * next;
enum { BANG,
POINTER,
FLOAT,
SYMBOL,
LIST,
ANYTHING,
CANCEL} type;
int argc;
t_atom * argv;
t_symbol * symbol;
} detach_content_t;
static void detach_thread(detach_t* x)
{
detach_content_t * me;
while(1)
{
pthread_cond_wait(&x->x_cond, &x->x_mutex);
me = (detach_content_t*) threadlib_fifo_get(x->x_fifo);
while (me != NULL)
{
/* run function */
switch (me->type)
{
case BANG:
outlet_bang(x->x_outlet);
break;
case FLOAT:
outlet_float(x->x_outlet, atom_getfloat(me->argv));
break;
case SYMBOL:
outlet_symbol(x->x_outlet, atom_getsymbol(me->argv));
break;
case LIST:
outlet_list(x->x_outlet, 0, me->argc, me->argv);
freebytes(me->argv, me->argc * sizeof(t_atom));
break;
case POINTER:
outlet_pointer(x->x_outlet, me->argv->a_w.w_gpointer);
break;
case ANYTHING:
outlet_anything(x->x_outlet, me->symbol, me->argc, me->argv);
freebytes(me->argv, me->argc * sizeof(t_atom));
break;
case CANCEL:
goto done;
}
/* free */
if (me->argc)
freebytes(me->argv, me->argc * sizeof (t_atom));
freebytes (me, sizeof(detach_content_t));
me = (detach_content_t*) threadlib_fifo_get(x->x_fifo);
}
}
done: /* free the fifo and exit */
do
{
if (me->argc)
freebytes(me->argv, me->argc * sizeof (t_atom));
freebytes (me, sizeof(detach_content_t));
}
while ( (me = (detach_content_t*) threadlib_fifo_get(x->x_fifo)) );
threadlib_fifo_destroy(x->x_fifo);
pthread_mutex_destroy(&x->x_mutex);
pthread_cond_destroy(&x->x_cond);
return;
}
/* todo: take argument for thread priority */
static detach_t * detach_new()
{
detach_t *x = (detach_t*) pd_new(detach_class);
int status;
x->x_outlet = outlet_new(&x->x_obj, NULL);
x->x_fifo = threadlib_fifo_init();
/* thread initialisation */
pthread_mutex_init (&x->x_mutex,NULL);
pthread_mutex_unlock (&x->x_mutex);
pthread_cond_init (&x->x_cond,NULL);
status = pthread_create(&x->x_thread, NULL,
(void*)detach_thread, x);
if (status == 0)
post("detaching thread");
return x;
}
static void detach_free(detach_t * x)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = CANCEL;
me->argc = 0;
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_bang(detach_t * x)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = BANG;
me->argc = 0;
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_float(detach_t * x, t_float f)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = FLOAT;
me->argc = 1;
me->argv = getbytes(sizeof(t_atom));
SETFLOAT(me->argv, f);
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_pointer(detach_t * x, t_gpointer* gp)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = POINTER;
me->argc = 1;
me->argv = getbytes(sizeof(t_atom));
SETPOINTER(me->argv, gp);
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_symbol(detach_t * x, t_symbol * s)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = SYMBOL;
me->argc = 1;
me->argv = getbytes(sizeof(t_atom));
SETSYMBOL(me->argv, s);
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_list(detach_t * x, t_symbol * s, int argc, t_atom* argv)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = LIST;
me->argc = argc;
me->argv = copybytes(argv, argc * sizeof(t_atom));
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
static void detach_anything(detach_t * x, t_symbol * s, int argc, t_atom* argv)
{
detach_content_t * me = getbytes(sizeof(detach_content_t));
me->type = ANYTHING;
me->argc = argc;
me->argv = copybytes(argv, argc * sizeof(t_atom));
me->symbol = s;
threadlib_fifo_put(x->x_fifo, me);
pthread_cond_broadcast(&x->x_cond);
}
void detach_setup(void)
{
detach_class = class_new(gensym("detach"), (t_newmethod)detach_new,
(t_method)detach_free, sizeof(detach_t),
CLASS_DEFAULT, 0);
class_addbang(detach_class, detach_bang);
class_addfloat(detach_class, detach_float);
class_addpointer(detach_class, detach_pointer);
class_addsymbol(detach_class, detach_symbol);
class_addlist(detach_class, detach_list);
class_addanything(detach_class, detach_anything);
}
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