| /* |
| * 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> |
| |
| |
| #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, uintptr_t 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, uintptr_t 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, uintptr_t *evtFreeDataP, bool sleepIfNone); |
| |
| |
| #endif |
| |
