Add simple Trigger trait for generating events #29
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alxiord
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Sep 24, 2020
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| use std::result::Result; | |||
This is a simple interface which models an object that can generate a single event. Each attempt to trigger the event may return an error, which is defined by an associated type. Signed-off-by: Alexandru Agache <[email protected]>
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alxiord
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Sep 24, 2020
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LGTM. This is the right step towards abstracting away the hypervisor from the emulation layer as well (i.e. looks like what we would need to fix: rust-vmm/vm-superio#7). |
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| /// Abstraction for a simple, push-button like interrupt mechanism. | ||
| pub trait Trigger { | ||
| /// Underlying type for the potential error conditions returned by `Self::trigger`. | ||
| type E; |
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It would be better and more typical to use Error for the generic error type (this is used https://doc.rust-lang.org/std/convert/trait.TryFrom.html for instance).
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This PR introduces the simple
Triggertrait. I've started looking at the pending interrupt proposals and it seems this is a fundamental piece of functionality that we want to include anyway. Also, it can already help with abstracting away things such as usingEventFds to generate events/interrupts forvm-superiodevices.