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//
// DO NOT EDIT. THIS FILE IS GENERATED FROM $SRCDIR/xpcom/threads/nsIThreadShutdown.idl
//
/// `interface nsIThreadShutdown : nsISupports`
///
/// ```text
/// /**
/// * Handle for the ongoing shutdown progress of a given thread which can be used
/// * to observe and interrupt async shutdown progress. Methods on this interface
/// * may generally only be used on the thread which called
/// * `nsIThread::beginShutdown`.
/// */
/// ```
///
// The actual type definition for the interface. This struct has methods
// declared on it which will call through its vtable. You never want to pass
// this type around by value, always pass it behind a reference.
#[repr(C)]
pub struct nsIThreadShutdown {
vtable: &'static nsIThreadShutdownVTable,
/// This field is a phantomdata to ensure that the VTable type and any
/// struct containing it is not safe to send across threads by default, as
/// XPCOM is generally not threadsafe.
///
/// If this type is marked as [rust_sync], there will be explicit `Send` and
/// `Sync` implementations on this type, which will override the inherited
/// negative impls from `Rc`.
__nosync: ::std::marker::PhantomData<::std::rc::Rc<u8>>,
// Make the rust compiler aware that there might be interior mutability
// in what actually implements the interface. This works around UB
// introduced by https://github.com/llvm/llvm-project/commit/01859da84bad95fd51d6a03b08b60c660e642a4f
// that a rust lint would make blatantly obvious, but doesn't exist.
// This prevents optimizations, but those optimizations weren't available
// before rustc switched to LLVM 16, and they now cause problems because
// of the UB.
// Until there's a lint available to find all our UB, it's simpler to
// avoid the UB in the first place, at the cost of preventing optimizations
// in places that don't cause UB. But again, those optimizations weren't
// available before.
__maybe_interior_mutability: ::std::cell::UnsafeCell<[u8; 0]>,
}
// Implementing XpCom for an interface exposes its IID, which allows for easy
// use of the `.query_interface<T>` helper method. This also defines that
// method for nsIThreadShutdown.
unsafe impl XpCom for nsIThreadShutdown {
const IID: nsIID = nsID(0x70a43748, 0x6130, 0x4ea6,
[0xa4, 0x40, 0x7c, 0x74, 0xe1, 0xb7, 0xdd, 0x7c]);
}
// We need to implement the RefCounted trait so we can be used with `RefPtr`.
// This trait teaches `RefPtr` how to manage our memory.
unsafe impl RefCounted for nsIThreadShutdown {
#[inline]
unsafe fn addref(&self) {
self.AddRef();
}
#[inline]
unsafe fn release(&self) {
self.Release();
}
}
// This trait is implemented on all types which can be coerced to from nsIThreadShutdown.
// It is used in the implementation of `fn coerce<T>`. We hide it from the
// documentation, because it clutters it up a lot.
#[doc(hidden)]
pub trait nsIThreadShutdownCoerce {
/// Cheaply cast a value of this type from a `nsIThreadShutdown`.
fn coerce_from(v: &nsIThreadShutdown) -> &Self;
}
// The trivial implementation: We can obviously coerce ourselves to ourselves.
impl nsIThreadShutdownCoerce for nsIThreadShutdown {
#[inline]
fn coerce_from(v: &nsIThreadShutdown) -> &Self {
v
}
}
impl nsIThreadShutdown {
/// Cast this `nsIThreadShutdown` to one of its base interfaces.
#[inline]
pub fn coerce<T: nsIThreadShutdownCoerce>(&self) -> &T {
T::coerce_from(self)
}
}
// Every interface struct type implements `Deref` to its base interface. This
// causes methods on the base interfaces to be directly avaliable on the
// object. For example, you can call `.AddRef` or `.QueryInterface` directly
// on any interface which inherits from `nsISupports`.
impl ::std::ops::Deref for nsIThreadShutdown {
type Target = nsISupports;
#[inline]
fn deref(&self) -> &nsISupports {
unsafe {
::std::mem::transmute(self)
}
}
}
// Ensure we can use .coerce() to cast to our base types as well. Any type which
// our base interface can coerce from should be coercable from us as well.
impl<T: nsISupportsCoerce> nsIThreadShutdownCoerce for T {
#[inline]
fn coerce_from(v: &nsIThreadShutdown) -> &Self {
T::coerce_from(v)
}
}
// This struct represents the interface's VTable. A pointer to a statically
// allocated version of this struct is at the beginning of every nsIThreadShutdown
// object. It contains one pointer field for each method in the interface. In
// the case where we can't generate a binding for a method, we include a void
// pointer.
#[doc(hidden)]
#[repr(C)]
pub struct nsIThreadShutdownVTable {
/// We need to include the members from the base interface's vtable at the start
/// of the VTable definition.
pub __base: nsISupportsVTable,
/* void onCompletion (in nsIRunnable aEvent); */
pub OnCompletion: unsafe extern "system" fn (this: *const nsIThreadShutdown, aEvent: *const nsIRunnable) -> ::nserror::nsresult,
/* [infallible] readonly attribute boolean completed; */
pub GetCompleted: unsafe extern "system" fn (this: *const nsIThreadShutdown, aCompleted: *mut bool) -> ::nserror::nsresult,
/* void stopWaitingAndLeakThread (); */
pub StopWaitingAndLeakThread: unsafe extern "system" fn (this: *const nsIThreadShutdown) -> ::nserror::nsresult,
}
// The implementations of the function wrappers which are exposed to rust code.
// Call these methods rather than manually calling through the VTable struct.
impl nsIThreadShutdown {
/// ```text
/// /**
/// * Register a runnable to be executed when the thread has completed shutdown,
/// * or shutdown has been cancelled due to `stopWaitingAndLeakThread()`.
/// *
/// * If the thread has already completed or cancelled shutdown, the runnable
/// * may be executed synchronously.
/// *
/// * May only be called on the thread which invoked `nsIThread::beginShutdown`.
/// */
/// ```
///
/// `void onCompletion (in nsIRunnable aEvent);`
#[inline]
pub unsafe fn OnCompletion(&self, aEvent: *const nsIRunnable) -> ::nserror::nsresult {
((*self.vtable).OnCompletion)(self, aEvent)
}
/// ```text
/// /**
/// * Check if the target thread has completed shutdown.
/// *
/// * May only be accessed on the thread which called `nsIThread::beginShutdown`.
/// */
/// ```
///
/// `[infallible] readonly attribute boolean completed;`
#[inline]
pub unsafe fn GetCompleted(&self) -> bool {
let mut result = <bool as ::std::default::Default>::default();
let _rv = ((*self.vtable).GetCompleted)(self, &mut result);
debug_assert!(_rv.succeeded());
result
}
/// ```text
/// /**
/// * Give up on waiting for the shutting down thread to exit. Calling this
/// * method will allow the thread to continue running, no longer block shutdown,
/// * and the thread will never be joined or have its resources reclaimed.
/// *
/// * Completion callbacks attached to this `nsIThreadShutdown` may be executed
/// * during this call.
/// *
/// * This method should NOT be called except in exceptional circumstances during
/// * shutdown, as it will cause resources for the shutting down thread to be
/// * leaked.
/// *
/// * May only be called on the thread which called `nsIThread::beginShutdown`
/// *
/// * @throws NS_ERROR_NOT_AVAILABLE
/// * Indicates that the target thread has already stopped running and a
/// * request to be joined is already being dispatched to the waiting thread.
/// */
/// ```
///
/// `void stopWaitingAndLeakThread ();`
#[inline]
pub unsafe fn StopWaitingAndLeakThread(&self, ) -> ::nserror::nsresult {
((*self.vtable).StopWaitingAndLeakThread)(self, )
}
}