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Kernel: Add DeviceManagement::try_for_each() for fallible iteration

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This API will allow users to short circuit iteration and properly
propagate errors.
This commit is contained in:
Idan Horowitz 2022-02-24 20:03:26 +02:00 committed by Andreas Kling
parent 064b93c2ad
commit da5d678f2a
2 changed files with 10 additions and 0 deletions
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9
Kernel/Devices/DeviceManagement.cpp
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@ -109,6 +109,15 @@ void DeviceManagement::for_each(Function<void(Device&)> callback)
});
}
ErrorOr<void> DeviceManagement::try_for_each(Function<ErrorOr<void>(Device&)> callback)
{
return m_devices.with([&](auto& map) -> ErrorOr<void> {
for (auto& entry : map)
TRY(callback(*entry.value));
return {};
});
}
NullDevice& DeviceManagement::null_device()
{
return *m_null_device;

1
Kernel/Devices/DeviceManagement.h
View file

@ -44,6 +44,7 @@ public:
void before_device_removal(Badge<Device>, Device&);
void for_each(Function<void(Device&)>);
ErrorOr<void> try_for_each(Function<ErrorOr<void>(Device&)>);
Device* get_device(MajorNumber major, MinorNumber minor);
NullDevice const& null_device() const;