ucontext(3) BSD Library Functions Manual ucontext(3)
NAME
ucontext -- user thread context
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ucontext.h>
DESCRIPTION
The ucontext_t type is a structure type suitable for holding the context for a user thread of execution. A thread's context includes its stack, saved registers, and list of blocked signals. The ucontext_t structure contains at least these fields: ucontext_t *uc_link context to assume when this one returns sigset_t uc_sigmask signals being blocked stack_t uc_stack stack area mcontext_t uc_mcontext saved registers The uc_link field points to the context to resume when this context's entry point function returns. If uc_link is equal to NULL, then the process exits when this context returns. The uc_mcontext field is machine-dependent and should be treated as opaque by portable applications. The following functions are defined to manipulate ucontext_t structures: int getcontext(ucontext_t *); int setcontext(const ucontext_t *); void makecontext(ucontext_t *, void (*)(void), int, ...); int swapcontext(ucontext_t *, const ucontext_t *);
SEE ALSO
sigaltstack(2), getcontext(3), makecontext(3) BSD September 10, 2002 BSD
Mac OS X 10.8 - Generated Fri Aug 31 16:53:04 CDT 2012