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https://gitee.com/openharmony/xts_dcts
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60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (C) 2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SHM_UTILS_H
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#define SHM_UTILS_H
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#include <cerrno>
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#include <cstdarg>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <pthread.h>
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#include <securec.h>
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#include <sys/shm.h>
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#include <sys/time.h>
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#include <unistd.h>
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#define MAX_WAIT_TIMEOUT 10
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#define SHM_SEND_KEY 123456
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#define SHM_RECV_KEY 123466
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struct shared_use_st {
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int written; // 作为一个标志，非0：表示可读，0表示可写
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char data[1024]; // 记录写入和读取的文本
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};
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#define LOG(format, ...) \
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do { \
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time_t timeSec; \
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time(&timeSec); \
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struct tm tmRst; \
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localtime_r(&timeSec, &tmRst); \
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char strTime[10]; \
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strftime(strTime, sizeof(strTime), "%H:%M:%S", &tmRst); \
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fprintf(stdout, "[shm-utils] %s " format "\n", strTime, ##__VA_ARGS__); \
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} while (0)
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int createShm(int key);
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int disconnectShm(void);
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int writeCodeDataToShm(int code, char* buf);
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int waitDataWithCode(char* code, char* data);
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int writeDataToShm(char* buf);
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int deleteShm(void);
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char* Int2String(int num, char* str);
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void initShm(void);
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int readDataFromShm(char* buf);
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int readDataFromShmNoClear(char* buf);
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#endif |