CharDeviceUtils.java

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package com.buglabs.bug.jni.common;

import java.io.IOException;

/**
 * Utility methods for CharDevice objects
 * 
 * @author Angel Roman - angel@buglabs.net
 */
public class CharDeviceUtils {

	public static void openDeviceWithRetry(CharDevice d, String devnode, int attempts) throws Exception {
		openDeviceWithRetry(d, devnode, FCNTL_H.O_RDWR, attempts);
	}

	public static void openDeviceWithRetry(CharDevice d, String devnode, int flags, int attempts) throws Exception {
		int attempt_number = 0;
		int retval = 0;

		while (retval <= 0 && attempt_number < attempts) {
			attempt_number++;
			retval = d.open(devnode, flags);
			if (retval < 0) {
				//String errormsg = "Unable to open " + devnode + "retrying";
				Thread.sleep(2000);
			}
		}

		if (retval < 0) {
			throw new IOException("Unable to open device: " + devnode + " open returned " + retval);
		}
	}
}