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Manual page for ucontext(5)

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


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Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1997).

Last modified 07/October/97