75fac7dbc6
Events groups are synchronization primitives that allow tasks to wait for multiple conditions to be met before proceeding. They are particularly useful in scenarios where a task needs to wait for several events to occur simultaneously. Signed-off-by: chao an <anchao@lixiang.com>
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
/****************************************************************************
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* sched/event/event.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __SCHED_EVENT_EVENT_H
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#define __SCHED_EVENT_EVENT_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/irq.h>
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#include <nuttx/list.h>
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#include <nuttx/semaphore.h>
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#include <nuttx/event.h>
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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typedef struct nxevent_wait_s nxevent_wait_t;
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struct nxevent_wait_s
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{
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struct list_node node; /* Wait node of current task */
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nxevent_mask_t expect; /* Expect events of wait task */
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nxevent_flags_t eflags; /* Event flags of wait task */
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sem_t sem; /* Wait sem of current task */
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};
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#endif /* __SCHED_EVENT_EVENT_H */
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