trusty (7) ucontext.h.7posix.gz

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NAME
       ucontext.h - user context


SYNOPSIS
       #include <ucontext.h>


DESCRIPTION
       The <ucontext.h> header shall define the mcontext_t type through typedef.

       The  <ucontext.h>  header shall define the ucontext_t type as a structure that shall include at least the
       following members:

              ucontext_t *uc_link     Pointer to the context that is resumed
                                      when this context returns.
              sigset_t    uc_sigmask  The set of signals that are blocked when this
                                      context is active.
              stack_t     uc_stack    The stack used by this context.
              mcontext_t  uc_mcontext A machine-specific representation of the saved
                                      context.

       The types sigset_t and stack_t shall be defined as in <signal.h> .

       The following shall be declared as functions and may also be defined as macros, Function prototypes shall
       be provided.

              int  getcontext(ucontext_t *);
              int  setcontext(const ucontext_t *);
              void makecontext(ucontext_t *, void (*)(void), int, ...);
              int  swapcontext(ucontext_t *restrict, const ucontext_t *restrict);

       The following sections are informative.


APPLICATION USAGE
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       <signal.h>   ,  the  System  Interfaces  volume  of  IEEE Std 1003.1-2001,  getcontext(),  makecontext(),
       sigaction(), sigprocmask(), sigaltstack()


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc  and  The  Open Group. In the event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .