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104f811e67
This unifies all the EC header files to use __CROS_EC_FILENAME_H as the include guard. Well, except for test/ util/ and extra/ which use __TEST_ __UTIL_ and __EXTRA_ prefixes respectively. BUG=chromium:496895 BRANCH=none TEST=make buildall -j Signed-off-by: Bill Richardson <wfrichar@chromium.org> Change-Id: Iea71b3a08bdec94a11239de810a2b2e152b15029 Reviewed-on: https://chromium-review.googlesource.com/278121 Reviewed-by: Randall Spangler <rspangler@chromium.org>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Queue policies.
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*/
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#ifndef __CROS_EC_QUEUE_POLICIES_H
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#define __CROS_EC_QUEUE_POLICIES_H
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#include "queue.h"
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#include "consumer.h"
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#include "producer.h"
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/*
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* The direct notification policy manages a 1-to-1 producer consumer model.
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* When new units are added to the queue the consumer is notified directly, in
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* whatever context (interrupt, deferred, task...) that the queue addition
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* happened. Similarly, queue removals directly notify the producer.
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*/
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struct queue_policy_direct {
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struct queue_policy policy;
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struct producer const *producer;
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struct consumer const *consumer;
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};
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void queue_add_direct(struct queue_policy const *policy, size_t count);
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void queue_remove_direct(struct queue_policy const *policy, size_t count);
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#define QUEUE_POLICY_DIRECT(PRODUCER, CONSUMER) \
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((struct queue_policy_direct const) { \
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.policy = { \
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.add = queue_add_direct, \
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.remove = queue_remove_direct, \
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}, \
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.producer = &PRODUCER, \
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.consumer = &CONSUMER, \
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})
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#define QUEUE_DIRECT(SIZE, TYPE, PRODUCER, CONSUMER) \
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QUEUE(SIZE, TYPE, QUEUE_POLICY_DIRECT(PRODUCER, CONSUMER).policy)
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/*
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* The null_producer and null_consumer are useful when constructing a queue
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* where one end needs notification, but the other end doesn't care. These
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* producer and consumer structs just ignore all notifications.
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*/
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extern struct producer const null_producer;
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extern struct consumer const null_consumer;
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#endif /* __CROS_EC_QUEUE_POLICIES_H */
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