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zbus: Add message bus subsystem to Zephyr

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Add zbus message bus as a Zephyr subsystem. No message bus
or communication abstraction other than the usual (message queues,
mailboxes, etc.) enabled developers to implement event-driven systems in
Zephyr quickly. Zbus would fill that gap by providing the community with
a lightweight and flexible message bus. The implementation tries to be
closest as possible to the existing ones. We use the claim/finish
approach, and the API for publishing and reading channels are similar
in message queues. Zbus is about channels, messages, and observers.

Signed-off-by: Rodrigo Peixoto <rodrigopex@gmail.com>
This commit is contained in:
Rodrigo Peixoto 2022-07-30 23:40:36 -03:00 • committed by Anas Nashif
commit b8ecbfaa57
14 changed files with 1411 additions and 0 deletions
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27
subsys/zbus/zbus_iterable_sections.c Normal file
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/*
* Copyright (c) 2022 Rodrigo Peixoto <rodrigopex@gmail.com>
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/logging/log.h>
#include <zephyr/zbus/zbus.h>
LOG_MODULE_DECLARE(zbus, CONFIG_ZBUS_LOG_LEVEL);
bool zbus_iterate_over_channels(bool (*iterator_func)(const struct zbus_channel *chan))
{
STRUCT_SECTION_FOREACH(zbus_channel, chan) {
if (!(*iterator_func)(chan)) {
return false;
}
}
return true;
}
bool zbus_iterate_over_observers(bool (*iterator_func)(const struct zbus_observer *obs))
{
STRUCT_SECTION_FOREACH(zbus_observer, obs) {
if (!(*iterator_func)(obs)) {
return false;
}
}
return true;
}