/// <summary>
/// 开始把队列消息写入文件
/// </summary>
private static void logStartWrite(Cre <T> cre)
{
if (isStart)
{
return;
}
isStart = true;
Thread t = new Thread(delegate()
{
while (true)
{
if (SafetyWriteHelper <T> .logQueue.Count >= 1)
{
T m = null;
lock (myLock)
m = SafetyWriteHelper <T> .logQueue.Dequeue();
if (m == null)
{
continue;
}
cre(m);
//PanGuLuceneHelper.instance.CreateIndex(T);
}
else
{
isStart = false; //标记下次可执行
break; //跳出循环
}
}
});
t.Start();
}
/// <summary>
/// 写入
/// </summary>
/// <param name="logmede"></param>
public static void logWrite(T logmede, Cre <T> cre)
{
// 这里需要锁上 不然会出现：源数组长度不足。请检查 srcIndex 和长度以及数组的下限。异常
//网上有资料说 http://blog.csdn.net/greatbody/article/details/26135057 不能多线程同时写入队列
//其实 不仅仅 不能同时写入队列 也不能同时读和写如队列 所以 在Dequeue 取的时候也要锁定一个对象
lock (myLock)
logQueue.Enqueue(logmede);
logStartWrite(cre);
}
/// <summary>
/// 写入集合
/// </summary>
/// <param name="logmede"></param>
public static void logWrite(List <T> logmede, Cre <T> cre)
{
lock (myLock)
{
foreach (var item in logmede)
{
logQueue.Enqueue(item);
}
}
logStartWrite(cre);
}
private void timer1_Tick(object sender, EventArgs e)
{
MySqlConnection cnn = new MySqlConnection("Server=localhost;DATABASE=food;Uid=admin;Password=123;");
MySqlCommand cmd = new MySqlCommand("Select Credit from compte WHERE UserN ='" + User + "'", cnn);
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count == 1)
{
String Cred = dt.Rows[0]["Credit"].ToString();
Cre = Cred;
}
lbl_Credit.Text = Cre.ToString();
}
