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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 en- try 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 *); ucontext_t * getcontextx(void); 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), getcontextx(3), makecontext(3) STANDARDS The ucontext_t type conforms to X/Open System Interfaces and Headers Issue 5 ("XSH5") and IEEE Std 1003.1-2001 ("POSIX.1"). The IEEE Std 1003.1-2008 ("POSIX.1") revision removed the ucontext_t from the specifi- cation. BSD March 23, 2020 BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | STANDARDS
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