posix/include/ucontext.h

   1 /* $Id: ucontext.h,v 1.2 2002/02/20 09:17:55 hyperion Exp $
   2  */
   3 /*
   4  * ucontext.h
   5  *
   6  * user context. Conforming to the Single UNIX(r) Specification Version 2,
   7  * System Interface & Headers Issue 5
   8  *
   9  * This file is part of the ReactOS Operating System.
  10  *
  11  * Contributors:
  12  *  Created by KJK::Hyperion <noog@libero.it>
  13  *
  14  *  THIS SOFTWARE IS NOT COPYRIGHTED
  15  *
  16  *  This source code is offered for use in the public domain. You may
  17  *  use, modify or distribute it freely.
  18  *
  19  *  This code is distributed in the hope that it will be useful but
  20  *  WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
  21  *  DISCLAMED. This includes but is not limited to warranties of
  22  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  23  *
  24  */
  25 #ifndef __UCONTEXT_H_INCLUDED__
  26 #define __UCONTEXT_H_INCLUDED__
  27
  28 /* INCLUDES */
  29 #include <signal.h>
  30
  31 /* OBJECTS */
  32
  33 /* TYPES */
  34 typedef void * mcontext_t;
  35
  36 typedef struct __tagucontext_t ucontext_t;
  37
  38 struct __tagucontext_t
  39 {
  40  ucontext_t *uc_link;     /* pointer to the context that will be resumed
  41                              when this context returns */
  42  sigset_t    uc_sigmask;  /* the set of signals that are blocked when this
  43                              context is active */
  44  stack_t     uc_stack;    /* the stack used by this context */
  45  mcontext_t  uc_mcontext; /* a machine-specific representation of the saved
  46                              context */
  47 };
  48
  49 /* CONSTANTS */
  50
  51 /* PROTOTYPES */
  52 int  getcontext(ucontext_t *);
  53 int  setcontext(const ucontext_t *);
  54 void makecontext(ucontext_t *, (void *)(), int, ...);
  55 int  swapcontext(ucontext_t *, const ucontext_t *);
  56
  57 /* MACROS */
  58
  59 #endif /* __UCONTEXT_H_INCLUDED__ */
  60
  61 /* EOF */
  62