gst/cothreads.h

   1 /* GStreamer
   2  * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
   3  *                    2000 Wim Taymans <wtay@chello.be>
   4  *
   5  * cothreads.h: Header for cothreading routines
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef __COTHREADS_H__
  24 #define __COTHREADS_H__
  25
  26 #include <glib.h>
  27 #include <setjmp.h>
  28
  29 typedef struct _cothread_state          cothread_state;
  30 typedef struct _cothread_context        cothread_context;
  31
  32 typedef int (*cothread_func) (int argc,char **argv);
  33
  34 #define COTHREAD_STARTED        0x01
  35 #define COTHREAD_DESTROYED      0x02
  36
  37 struct _cothread_state {
  38   cothread_context      *ctx;
  39   int                    cothreadnum;
  40   gpointer               priv;
  41
  42   cothread_func          func;
  43   int                    argc;
  44   char                 **argv;
  45
  46   int                    flags;
  47   void                  *sp;
  48   jmp_buf                jmp;
  49   void                  *stack_base;
  50   unsigned long          stack_size;
  51
  52   int                    magic_number;
  53 };
  54
  55
  56 cothread_context*               cothread_context_init           (void);
  57 void                            cothread_context_free           (cothread_context *ctx);
  58 void                            cothread_context_set_data       (cothread_state *cothread,
  59                                                                  gchar *key, gpointer data);
  60 gpointer                        cothread_context_get_data       (cothread_state *cothread, gchar *key);
  61
  62 cothread_state*                 cothread_create                 (cothread_context *ctx);
  63 void                            cothread_free                   (cothread_state *cothread);
  64 void                            cothread_setfunc                (cothread_state *cothread, cothread_func func,
  65                                                                  int argc, char **argv);
  66 void                            cothread_stop                   (cothread_state *cothread);
  67
  68 void                            cothread_switch                 (cothread_state *cothread);
  69 void                            cothread_set_private            (cothread_state *cothread,
  70                                                                  gpointer data);
  71 gpointer                        cothread_get_private            (cothread_state *cothread);
  72
  73 void                            cothread_lock                   (cothread_state *cothread);
  74 gboolean                        cothread_trylock                (cothread_state *cothread);
  75 void                            cothread_unlock                 (cothread_state *cothread);
  76
  77 cothread_state*                 cothread_main                   (cothread_context *ctx);
  78 cothread_state*                 cothread_current_main           (void);
  79 cothread_state*                 cothread_current                (void);
  80
  81 #endif /* __COTHREAD_H__ */