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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* cothreads.h: Header for cothreading routines
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*/
#ifndef __COTHREADS_H__
#define __COTHREADS_H__
#include <glib.h>
#include <setjmp.h>
#ifdef HAVE_ATOMIC_H
#include <asm/atomic.h>
#endif
#undef COTHREAD_ATOMIC
#ifndef CURRENT_STACK_FRAME
#define CURRENT_STACK_FRAME ({ char __csf; &__csf; })
#endif /* CURRENT_STACK_FRAME */
typedef struct _cothread_state cothread_state;
typedef struct _cothread_context cothread_context;
typedef int (*cothread_func) (int argc,char **argv);
#define COTHREAD_STARTED 0x01
struct _cothread_state {
cothread_context *ctx;
int threadnum;
cothread_func func;
int argc;
char **argv;
int flags;
void *sp;
sigjmp_buf jmp;
/* is this needed any more? */
void *top_sp;
void *pc;
#ifdef COTHREAD_ATOMIC
atomic_t lock;
#else
GMutex *lock;
#endif
};
cothread_context* cothread_init();
cothread_state* cothread_create (cothread_context *ctx);
void cothread_setfunc (cothread_state *thread, cothread_func func,
int argc, char **argv);
int cothread_getcurrent (void);
void cothread_switch (cothread_state *thread);
void cothread_set_data (cothread_state *thread, gchar *key, gpointer data);
gpointer cothread_get_data (cothread_state *thread, gchar *key);
void cothread_lock (cothread_state *thread);
gboolean cothread_trylock (cothread_state *thread);
void cothread_unlock (cothread_state *thread);
cothread_state* cothread_main (cothread_context *ctx);
cothread_state* cothread_current_main (void);
#endif /* __COTHREAD_H__ */
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