clang-format: re-format for clang-18

clang-format-18 isn't compatible with the clang-format-17 output, so we
need to reformat the code with the latest version. The way clang-18
handles lambda forma

clang-format: re-format for clang-18

clang-format-18 isn't compatible with the clang-format-17 output, so we
need to reformat the code with the latest version. The way clang-18
handles lambda formatting also changed, so we have made changes to the
organization default style format to better handle lambda formatting.

See I5e08687e696dd240402a2780158664b7113def0e for updated style.
See Iea0776aaa7edd483fa395e23de25ebf5a6288f71 for clang-18 enablement.

Change-Id: I4f63258febea27dae710c252033b9151e02be7e8
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>

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event: prevent potential deadlock

In the `obtain_lock<true>()` path there is a race in which another
thread can run after the `run_condition.signal()` call before the
mutex lock call is executed. T

event: prevent potential deadlock

In the `obtain_lock<true>()` path there is a race in which another
thread can run after the `run_condition.signal()` call before the
mutex lock call is executed. This other thread could run a significant
amount of code, including coming around to be back in the `run_one`
path.

To prevent this behavior, add a stage to the lock so that there is an
ordering such that the signalling thread is ensured to get the primary
lock before the signalled thread.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia464a95ed55246a67ed87601275a6e1fa8b16ba3

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event: add unistd header

The file uses `write` which is defined in `unistd.h`. Add it to give
more coverage to various compiler and stdlib versions.

Signed-off-by: Patrick Williams <patrick@stwcx.

event: add unistd header

The file uses `write` which is defined in `unistd.h`. Add it to give
more coverage to various compiler and stdlib versions.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Icbef43f3b6b89f0ff3cdfb84ad5fa1c695562dbb

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async: add sleep_for sender

Sometimes it is useful to do the equivalent of
`std::this_thread::sleep_for` in a co-routine context. Add a
sender-based implementation to async.

Signed-off-by: Patrick

async: add sleep_for sender

Sometimes it is useful to do the equivalent of
`std::this_thread::sleep_for` in a co-routine context. Add a
sender-based implementation to async.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I9991eb40b7a1b12e61511f1200bc99fdcdbccf0a

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event: add oneshot timer support

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I9785fa52e38202821258ad162e6f9168c71e53f7

event: add a simple wrapper around sd-event

In order to facilitate stop-conditions on the async::context,
we need to be able to escape the wait on the dbus fd. sd-event
will allow us to do this and

event: add a simple wrapper around sd-event

In order to facilitate stop-conditions on the async::context,
we need to be able to escape the wait on the dbus fd. sd-event
will allow us to do this and also build other co-routine primitives
in the future (such as `co_await async::delay(1s)` backed by sd-event
timers). Define a simple wrapper around sd-event here which can
be leveraged by the async framework.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I945416cbce3c98d98135c42cb7ca249a57cb9a60

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