ucontext.h - user context
[XSI] #include <ucontext.h>
The <ucontext.h> header shall define the mcontext_t type through typedef.
The <ucontext.h> header shall define the ucontext_t type as a structure that shall include at least the following members:ucontext_t *uc_link Pointer to the context that is resumed when this context returns. sigset_t uc_sigmask The set of signals that are blocked when this context is active. stack_t uc_stack The stack used by this context. mcontext_t uc_mcontext A machine-specific representation of the saved context.
The types sigset_t and stack_t shall be defined as in <signal.h>.
The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.[OB] int getcontext(ucontext_t *); void makecontext(ucontext_t *, void (*)(void), int, ...); int setcontext(const ucontext_t *); int swapcontext(ucontext_t *restrict, const ucontext_t *restrict);
<signal.h>, the System Interfaces volume of IEEE Std 1003.1-2001, getcontext(), makecontext(), sigaction(), sigprocmask(), sigaltstack()
First released in Issue 4, Version 2.
IEEE Std 1003.1-2001/Cor 2-2004, item XBD/TC2/D6/28 is applied, updating the getcontext(), makecontext(), setcontext(), and swapcontext() functions to be obsolescent.