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ucontext(5) File Formats Manual ucontext(5) NAME ucontext - 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 re- turns. Specifies the set of signals that are blocked when this context is active. See sigprocmask(2) for more information. Specifies the stack used by this context. See sigaltstack(2) for more information. Contains the saved machine registers and any implementation-specific 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)