ucontext(5)ucontext(5)NAMEucontext - user context
SYNOPSIS
#include <ucontext.h>
DESCRIPTION
The thread of control within an executing process is specified by the
ucontext structure. This structure contains at least the following
members:
ucontext_t uc_link
sigset_t uc_sigmask
stack_t uc_stack
mcontext_t uc_mcontext
The values for each member is as follows: Points to the context that is
to continue when this context returns. If uc_link is equal to zero (0),
this is the main context, and the process exits when this context
returns. Specifies the set of signals that are blocked when this con‐
text is active. See sigprocmask(2) for more information. Specifies
the stack used by this context. See sigaltstack(2) for more informa‐
tion. Contains the saved machine registers and any implementation-spe‐
cific context data.
RESTRICTIONS
Portable applications should not access or modify the uc_mcontext value
in the ucontext structure.
SEE ALSO
Functions: getcontext(2), sigaction(2), sigprocmask(2), sigaltstack(2).
ucontext(5)