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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _EVENT_Q_H_
#define _EVENT_Q_H_
#include <stdbool.h>
#include <stdint.h>
#include <plat/inc/taggedPtr.h>
#define EVENT_TYPE_BIT_DISCARDABLE_COMPAT 0x80000000 /* some external apps are using this one */
#define EVENT_TYPE_BIT_DISCARDABLE 0x8000 /* set for events we can afford to lose */
struct EvtQueue;
typedef void (*EvtQueueForciblyDiscardEvtCbkF)(uint32_t evtType, void *evtData, TaggedPtr evtFreeData);
//multi-producer, SINGLE consumer queue
struct EvtQueue* evtQueueAlloc(uint32_t size, EvtQueueForciblyDiscardEvtCbkF forceDiscardCbk);
void evtQueueFree(struct EvtQueue* q);
bool evtQueueEnqueue(struct EvtQueue* q, uint32_t evtType, void *evtData, TaggedPtr evtFreeData, bool atFront /* do not set this unless you know the repercussions. read: never set this in new code */);
bool evtQueueDequeue(struct EvtQueue* q, uint32_t *evtTypeP, void **evtDataP, TaggedPtr *evtFreeDataP, bool sleepIfNone);
#endif
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