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index.js
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executable file
·35 lines (30 loc) · 1.09 KB
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// 引入共享記憶體讀取模組
const SharedMemoryReader = require('./sharedMemory');
// 創建共享記憶體讀取器實例
const name = '/my_shared_memory'; // 與 C++ 程式中相同的共享記憶體名稱
const dataSize = 2; // 要讀取的浮點數數量，請根據實際情況修改
let sharedMemoryReader;
try {
sharedMemoryReader = new SharedMemoryReader(name, dataSize);
} catch (error) {
console.error(error.message);
process.exit(1);
}
// 定義一個函數，每 100 毫秒讀取一次共享記憶體
function readAndEmitData() {
try {
const dataArray = sharedMemoryReader.readData();
console.log('讀取到的浮點數數組：', dataArray);
} catch (error) {
console.error('讀取共享記憶體失敗：', error.message);
}
}
// 定時讀取共享記憶體
const intervalId = setInterval(readAndEmitData, 100);
// 當程式終止時，釋放資源
process.on('SIGINT', () => {
clearInterval(intervalId);
sharedMemoryReader.close();
console.log('\n程式已退出，資源已釋放。');
process.exit(0);
});