Struct glib::MainContext
source · [−]#[repr(transparent)]pub struct MainContext { /* private fields */ }
Implementations
v2_72
only.Invokes func
on the main context.
If the current thread is the owner of the main context or the main context currently has no
owner then func
will be called directly from inside this function. If this behaviour is
not desired and func
should always be called asynchronously then use MainContext::spawn
glib::idle_add
instead.
pub fn invoke_with_priority<F>(&self, priority: Priority, func: F) where
F: FnOnce() + Send + 'static,
pub fn invoke_with_priority<F>(&self, priority: Priority, func: F) where
F: FnOnce() + Send + 'static,
Invokes func
on the main context with the given priority.
If the current thread is the owner of the main context or the main context currently has no
owner then func
will be called directly from inside this function. If this behaviour is
not desired and func
should always be called asynchronously then use MainContext::spawn
glib::idle_add
instead.
Invokes func
on the main context.
Different to invoke()
, this does not require func
to be
Send
but can only be called from the thread that owns the main context.
This function panics if called from a different thread than the one that owns the main context.
Note that this effectively means that func
is called directly from inside this function
or otherwise panics immediately. If this behaviour is not desired and func
should always
be called asynchronously then use MainContext::spawn_local
glib::idle_add_local
instead.
pub fn invoke_local_with_priority<F>(&self, _priority: Priority, func: F) where
F: FnOnce() + 'static,
pub fn invoke_local_with_priority<F>(&self, _priority: Priority, func: F) where
F: FnOnce() + 'static,
Invokes func
on the main context with the given priority.
Different to invoke_with_priority()
, this does not require func
to be
Send
but can only be called from the thread that owns the main context.
This function panics if called from a different thread than the one that owns the main context.
Note that this effectively means that func
is called directly from inside this function
or otherwise panics immediately. If this behaviour is not desired and func
should always
be called asynchronously then use MainContext::spawn_local
glib::idle_add_local
instead.
Call closure with the main context configured as the thread default one.
The thread default main context is changed in a panic-safe manner before calling func
and
released again afterwards regardless of whether closure panicked or not.
This will fail if the main context is owned already by another thread.
Acquire ownership of the main context.
Ownership will automatically be released again once the returned acquire guard is dropped.
This will fail if the main context is owned already by another thread.
Creates a channel for a main context.
The Receiver
has to be attached to a main context at a later time, together with a
closure that will be called for every item sent to a Sender
.
The Sender
can be cloned and both the Sender
and Receiver
can be sent to different
threads as long as the item type implements the Send
trait.
When the last Sender
is dropped the channel is removed from the main context. If the
Receiver
is dropped and not attached to a main context all sending to the Sender
will fail.
The returned Sender
behaves the same as std::sync::mpsc::Sender
.
Creates a synchronous channel for a main context with a given bound on the capacity of the channel.
The Receiver
has to be attached to a main context at a later time, together with a
closure that will be called for every item sent to a SyncSender
.
The SyncSender
can be cloned and both the SyncSender
and Receiver
can be sent to different
threads as long as the item type implements the Send
trait.
When the last SyncSender
is dropped the channel is removed from the main context. If the
Receiver
is dropped and not attached to a main context all sending to the SyncSender
will fail.
The returned SyncSender
behaves the same as std::sync::mpsc::SyncSender
.
Spawn a new infallible Future
on the main context.
This can be called from any thread and will execute the future from the thread
where main context is running, e.g. via a MainLoop
.
Spawn a new infallible Future
on the main context.
The given Future
does not have to be Send
.
This can be called only from the thread where the main context is running, e.g.
from any other Future
that is executed on this main context, or after calling
with_thread_default
or acquire
on the main context.
Spawn a new infallible Future
on the main context, with a non-default priority.
This can be called from any thread and will execute the future from the thread
where main context is running, e.g. via a MainLoop
.
Spawn a new infallible Future
on the main context, with a non-default priority.
The given Future
does not have to be Send
.
This can be called only from the thread where the main context is running, e.g.
from any other Future
that is executed on this main context, or after calling
with_thread_default
or acquire
on the main context.
Runs a new, infallible Future
on the main context and block until it finished, returning
the result of the Future
.
The given Future
does not have to be Send
or 'static
.
This must only be called if no MainLoop
or anything else is running on this specific main
context.
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Returns the type identifier of Self
.
Auto Trait Implementations
Blanket Implementations
Mutably borrows from an owned value. Read more
impl<Sp> LocalSpawnExt for Sp where
Sp: LocalSpawn + ?Sized,
impl<Sp> LocalSpawnExt for Sp where
Sp: LocalSpawn + ?Sized,
fn spawn_local<Fut>(&self, future: Fut) -> Result<(), SpawnError> where
Fut: 'static + Future<Output = ()>,
fn spawn_local<Fut>(&self, future: Fut) -> Result<(), SpawnError> where
Fut: 'static + Future<Output = ()>,
Spawns a task that polls the given future with output ()
to
completion. Read more
Returns a SendValue
clone of self
.