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/*
*
* threadlib
* library for threaded patching in PureData
* Copyright (C) 2005 Georg Holzmann <grh@mur.at>
* heavily based on code by Tim Blechmann
* (detach, join, pd_devel)
*
* 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.
*/
#ifndef __PD_THREADLIB_H_
#define __PD_THREADLIB_H_
#include "m_pd.h"
#include "pthread.h"
#ifdef MSW
#define THREADLIB_EXTERN __declspec(dllexport) extern
#else
#define THREADLIB_EXTERN extern
#endif /* MSW */
// threadlib version string
#define VERSION "0.1"
// define it to use the lockfree fifo
#define THREADLIB_LOCKFREE
// for debuging
//#define DEBUG
// setup function
THREADLIB_EXTERN void threadlib_setup(void);
/* --------- lockfree FIFO of pd devel ----------- */
// (implemted in fifo.c)
/* used data structures */
EXTERN_STRUCT _fifo;
#define t_fifo struct _fifo
/* function prototypes */
THREADLIB_EXTERN t_fifo * fifo_init(void);
THREADLIB_EXTERN void fifo_destroy(t_fifo*);
/* fifo_put() and fifo_get are the only threadsafe functions!!! */
THREADLIB_EXTERN void fifo_put(t_fifo*, void*);
THREADLIB_EXTERN void* fifo_get(t_fifo*);
/* --------- callback FIFO of pd devel ----------- */
// (implemted in callbacks.c)
/* NOTE: difference to pd_devel
* in pd_devel the callbacks are called in idle time
* (idle callbacks), because this is not possible
* in current pd, they are called here by the
* clock callbacks
*/
/* register a new callback in FIFO */
/* tb: to be called at idle time */
/* Holzmann: idle callbacks of current PD are not reliable, so
it will be called by the clock-callbacks for now */
THREADLIB_EXTERN void sys_callback(t_int (*callback) (t_int* argv),
t_int* argv, t_int argc);
/* private: */
/* set up callback fifo and start clock callback */
void h_init_callbacks();
/* free fifo and clock callback */
void h_free_callbacks();
#endif // __PD_THREADLIB_H_
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