Monitor running programs with JavaScript via C++
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How to monitor a running program
The following sample code shows how to monitor a running program. This code can be used to monitor the running of Workbook related code. Simply use the SystemTimeInterruptMonitor class to create a monitoring object, use the LoadOptions.interruptMonitor(AbstractInterruptMonitor) function to add it to the LoadOptions running parameters, and then use the startMonitor function to set the expected interruption time (in milliseconds). If the running time of the monitored code exceeds the expected time, the program will be interrupted and an exception will be thrown.
Sample Code
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Interrupt Monitor Example</title>
</head>
<body>
<h1>Interrupt Monitor Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, LoadOptions, SystemTimeInterruptMonitor, SaveFormat, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Create interrupt monitor and load options
const monitor = new SystemTimeInterruptMonitor(false);
const lopts = new LoadOptions();
lopts.interruptMonitor = monitor;
monitor.startMonitor(1000); // time limit is 1 second
// Load the workbook with the specified load options
const wb = new Workbook(new Uint8Array(arrayBuffer), lopts);
// If loading completed within time, start monitoring save
monitor.startMonitor(1500); // time limit is 1.5 seconds
const outputData = wb.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'result.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Result.xlsx';
document.getElementById('result').innerHTML = '<p style="color: green;">Operation completed successfully! Click the download link to get the resulting file.</p>';
});
</script>
</html>