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#[cfg(not(target_env = "musl"))]
use crate::errno::Errno;
use crate::sys::signal::SigSet;
#[cfg(not(target_env = "musl"))]
use crate::Result;
#[cfg(not(target_env = "musl"))]
use std::mem;
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub struct UContext {
context: libc::ucontext_t,
}
impl UContext {
#[cfg(not(target_env = "musl"))]
pub fn get() -> Result<UContext> {
let mut context = mem::MaybeUninit::<libc::ucontext_t>::uninit();
let res = unsafe { libc::getcontext(context.as_mut_ptr()) };
Errno::result(res).map(|_| unsafe {
UContext {
context: context.assume_init(),
}
})
}
#[cfg(not(target_env = "musl"))]
pub fn set(&self) -> Result<()> {
let res = unsafe {
libc::setcontext(&self.context as *const libc::ucontext_t)
};
Errno::result(res).map(drop)
}
pub fn sigmask_mut(&mut self) -> &mut SigSet {
unsafe {
&mut *(&mut self.context.uc_sigmask as *mut libc::sigset_t
as *mut SigSet)
}
}
pub fn sigmask(&self) -> &SigSet {
unsafe {
&*(&self.context.uc_sigmask as *const libc::sigset_t
as *const SigSet)
}
}
}
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