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Headersucontext(3HEAD)


NAME

 ucontext - user context

SYNOPSIS

 
#include <ucontext.h>

DESCRIPTION

 

The ucontext structure defines the context of a thread of control within an executing process.

This structure includes at least the following members:

 
ucontext_t  uc_link
sigset_t    uc_sigmask
stack_t     uc_stack
mcontext_t  uc_mcontext

uc_link is a pointer to the context that to be resumed when this context returns. If uc_link is equal to 0, then this context is the main context, and the process exits when this context returns.

uc_sigmask defines the set of signals that are blocked when this context is active [see sigprocmask(2)].

uc_stack defines the stack used by this context [see sigaltstack(2)].

uc_mcontext contains the saved set of machine registers and any implementation specific context data. Portable applications should not modify or access uc_mcontext.

SEE ALSO

 

getcontext(2), sigaction(2), sigaltstack(2), sigprocmask(2), makecontext(3C)


SunOS 5.9Go To TopLast Changed 3 Jul 1990

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.