Struct zircon_object::task::SuspendToken
source · [−]pub struct SuspendToken { /* private fields */ }
Expand description
Suspend the given task.
Currently only thread or process handles may be suspended.
Example
let job = Job::root();
let proc = Process::create(&job, "proc").unwrap();
let thread = Thread::create(&proc, "thread").unwrap();
// start the thread and never terminate
thread.start(|thread| Box::pin(async move {
loop { async_std::task::yield_now().await }
let _ = thread;
})).unwrap();
// wait for the thread running
let object: Arc<dyn KernelObject> = thread.clone();
async_std::task::block_on(object.wait_signal(Signal::THREAD_RUNNING));
assert_eq!(thread.state(), ThreadState::Running);
// suspend the thread
{
let task: Arc<dyn Task> = thread.clone();
let suspend_token = SuspendToken::create(&task);
assert_eq!(thread.state(), ThreadState::Suspended);
}
// suspend token dropped, resume the thread
assert_eq!(thread.state(), ThreadState::Running);
Implementations
Trait Implementations
sourceimpl Debug for SuspendToken
impl Debug for SuspendToken
sourceimpl Drop for SuspendToken
impl Drop for SuspendToken
sourceimpl KernelObject for SuspendToken
impl KernelObject for SuspendToken
sourcefn signal_set(&self, signal: Signal)
fn signal_set(&self, signal: Signal)
Assert signal
.
sourcefn signal_clear(&self, signal: Signal)
fn signal_clear(&self, signal: Signal)
Deassert signal
.
sourcefn signal_change(&self, clear: Signal, set: Signal)
fn signal_change(&self, clear: Signal, set: Signal)
Change signal status: first clear
then set
indicated bits. Read more
sourcefn add_signal_callback(&self, callback: SignalHandler)
fn add_signal_callback(&self, callback: SignalHandler)
Add callback
for signal status changes. Read more
sourcefn get_child(&self, _id: KoID) -> ZxResult<Arc<dyn KernelObject>>
fn get_child(&self, _id: KoID) -> ZxResult<Arc<dyn KernelObject>>
Attempt to find a child of the object with given KoID. Read more
If the object is related to another (such as the other end of a channel, or the parent of a job), returns the KoID of that object, otherwise returns zero. Read more
sourcefn allowed_signals(&self) -> Signal
fn allowed_signals(&self) -> Signal
Get object’s allowed signals.
Auto Trait Implementations
impl !RefUnwindSafe for SuspendToken
impl Send for SuspendToken
impl Sync for SuspendToken
impl Unpin for SuspendToken
impl !UnwindSafe for SuspendToken
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> CheckedAs for T
impl<T> CheckedAs for T
sourcefn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,
fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,
impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,
sourcefn checked_cast_from(src: Src) -> Option<Dst>
fn checked_cast_from(src: Src) -> Option<Dst>
Casts the value.
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
sourceimpl<T> OverflowingAs for T
impl<T> OverflowingAs for T
sourcefn overflowing_as<Dst>(self) -> (Dst, bool) where
T: OverflowingCast<Dst>,
fn overflowing_as<Dst>(self) -> (Dst, bool) where
T: OverflowingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,
impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,
sourcefn overflowing_cast_from(src: Src) -> (Dst, bool)
fn overflowing_cast_from(src: Src) -> (Dst, bool)
Casts the value.
sourceimpl<T> SaturatingAs for T
impl<T> SaturatingAs for T
sourcefn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,
fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,
impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,
sourcefn saturating_cast_from(src: Src) -> Dst
fn saturating_cast_from(src: Src) -> Dst
Casts the value.
sourceimpl<T> UnwrappedAs for T
impl<T> UnwrappedAs for T
sourcefn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,
fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,
impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,
sourcefn unwrapped_cast_from(src: Src) -> Dst
fn unwrapped_cast_from(src: Src) -> Dst
Casts the value.
sourceimpl<T> WrappingAs for T
impl<T> WrappingAs for T
sourcefn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,
fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,
impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,
sourcefn wrapping_cast_from(src: Src) -> Dst
fn wrapping_cast_from(src: Src) -> Dst
Casts the value.