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95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* cothreads.h: Header for cothreading routines
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __COTHREADS_H__
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#define __COTHREADS_H__
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#include <glib.h>
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#include <setjmp.h>
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#ifdef HAVE_ATOMIC_H
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#include <asm/atomic.h>
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#endif
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#undef COTHREAD_ATOMIC
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#define COTHREAD_STACKSIZE 32768
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#define COTHREAD_MAXTHREADS 64
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#define STACK_SIZE 0x200000
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#ifndef CURRENT_STACK_FRAME
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#define CURRENT_STACK_FRAME ({ char __csf; &__csf; })
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#endif /* CURRENT_STACK_FRAME */
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typedef struct _cothread_state cothread_state;
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typedef struct _cothread_context cothread_context;
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typedef int (*cothread_func) (int argc,char **argv);
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#define COTHREAD_STARTED 0x01
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struct _cothread_state {
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cothread_context *ctx;
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int threadnum;
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cothread_func func;
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int argc;
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char **argv;
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int flags;
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void *sp;
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jmp_buf jmp;
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/* is this needed any more? */
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void *top_sp;
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void *pc;
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#ifdef COTHREAD_ATOMIC
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atomic_t lock;
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#else
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GMutex *lock;
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#endif
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};
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struct _cothread_context {
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cothread_state *threads[COTHREAD_MAXTHREADS];
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int nthreads;
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int current;
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GHashTable *data;
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};
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cothread_context* cothread_init();
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cothread_state* cothread_create (cothread_context *ctx);
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void cothread_setfunc (cothread_state *thread, cothread_func func,
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int argc, char **argv);
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int cothread_getcurrent (void);
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void cothread_switch (cothread_state *thread);
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void cothread_set_data (cothread_state *thread, gchar *key, gpointer data);
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gpointer cothread_get_data (cothread_state *thread, gchar *key);
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void cothread_lock (cothread_state *thread);
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gboolean cothread_trylock (cothread_state *thread);
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void cothread_unlock (cothread_state *thread);
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cothread_state* cothread_main (cothread_context *ctx);
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cothread_state* cothread_current_main (void);
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#endif /* __COTHREAD_H__ */
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