DragonFly On-Line Manual Pages

Search: Section:  

UCONTEXT(3)           DragonFly Library Functions Manual           UCONTEXT(3)


ucontext -- user thread context


Standard C Library (libc, -lc)


#include <ucontext.h>


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 (*func)(void), int, ...); int swapcontext(ucontext_t *, const ucontext_t *); void makecontext_quick(ucontext_t *); void setcontext_quick(ucontext_t *); void swapcontext_quick(ucontext_t *, ucontex_t *);


sigaltstack(2), getcontext(3), makecontext(3), makecontext_quick(3), setcontext(3), setcontext_quick(3), swapcontext_quick(3) DragonFly 4.3 September 10, 2002 DragonFly 4.3

Search: Section: