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/* 
|| This file is part of Pike. For copyright information see COPYRIGHT. 
|| Pike is distributed under GPL, LGPL and MPL. See the file COPYING 
|| for more information. 
|| $Id: cyclic.h,v 1.7 2002/10/11 01:39:30 nilsson Exp $ 
*/ 
 
#ifndef CYCLIC_H 
#define CYCLIC_H 
 
#include "pike_error.h" 
#include "threads.h" 
 
typedef struct CYCLIC 
{ 
  ONERROR onerr; 
  void *th; 
  void *id,*a,*b; 
  void *ret; 
  struct CYCLIC *next; 
} CYCLIC; 
 
 
#define DECLARE_CYCLIC() \ 
  static char cyclic_identifier__; \ 
  CYCLIC cyclic_struct__ 
 
#define BEGIN_CYCLIC(A,B) \ 
   begin_cyclic(&cyclic_struct__, &cyclic_identifier__, \ 
                (void *)(ptrdiff_t)th_self(), (void *)(A), (void *)(B)) 
 
#define SET_CYCLIC_RET(RET) \ 
   cyclic_struct__.ret=(void *)(RET) 
 
#define END_CYCLIC()  unlink_cyclic(&cyclic_struct__) 
 
/* Prototypes begin here */ 
void unlink_cyclic(CYCLIC *c); 
void *begin_cyclic(CYCLIC *c, 
                   void *id, 
                   void *thread, 
                   void *a, 
                   void *b); 
/* Prototypes end here */ 
 
#endif /* CYCLIC_H */