Struct LazyDb

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pub struct LazyDb<CI> { /* private fields */ }
Expand description

Lazily-loaded database with interruption support

In addition to the Self::interrupt method, LazyDb also calls interrupt_support::register_interrupt on any opened database. This means that if interrupt_support::shutdown is called it will interrupt this database if it’s open and in-use.

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impl<CI: ConnectionInitializer> LazyDb<CI>

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pub fn new( path: &Path, open_flags: OpenFlags, connection_initializer: CI, ) -> Self

Create a new LazyDb

This does not open the connection and is non-blocking

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pub fn lock( &self, ) -> Result<(MappedMutexGuard<'_, Connection>, SqlInterruptScope), Error>

Lock the database mutex and get a connection and interrupt scope.

If the connection is closed, it will be opened.

Calling lock again, or calling close, from the same thread while the mutex guard is still alive will cause a deadlock.

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pub fn close(&self, interrupt: bool)

Close the database if it’s open

Pass interrupt=true to interrupt any in-progress queries before closing the database.

Do not call close if you already have a lock on the database in the current thread, as this will cause a deadlock.

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pub fn interrupt(&self)

Interrupt any in-progress queries

Auto Trait Implementations§

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impl<CI> !Freeze for LazyDb<CI>

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impl<CI> !RefUnwindSafe for LazyDb<CI>

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impl<CI> Send for LazyDb<CI>
where CI: Send,

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impl<CI> Sync for LazyDb<CI>
where CI: Sync,

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impl<CI> Unpin for LazyDb<CI>
where CI: Unpin,

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impl<CI> !UnwindSafe for LazyDb<CI>

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T, UT> HandleAlloc<UT> for T
where T: Send + Sync,

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fn new_handle(value: Arc<T>) -> Handle

Create a new handle for an Arc value Read more
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unsafe fn clone_handle(handle: Handle) -> Handle

Clone a handle Read more
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unsafe fn consume_handle(handle: Handle) -> Arc<T>

Consume a handle, getting back the initial Arc<> Read more
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Get a clone of the Arc<> using a “borrowed” handle. Read more
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