/// <summary>Log the current thread stacks at INFO level.</summary>
/// <param name="log">the logger that logs the stack trace</param>
/// <param name="title">a descriptive title for the call stacks</param>
/// <param name="minInterval">the minimum time from the last</param>
public static void LogThreadInfo(Org.Apache.Hadoop.Log log, string title, long minInterval)
{
bool dumpStack = false;
if (log.IsInfoEnabled())
{
lock (typeof(ReflectionUtils))
{
long now = Time.Now();
if (now - previousLogTime >= minInterval * 1000)
{
previousLogTime = now;
dumpStack = true;
}
}
if (dumpStack)
{
try
{
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
PrintThreadInfo(new TextWriter(buffer, false, "UTF-8"), title);
log.Info(buffer.ToString(Encoding.Default.Name()));
}
catch (UnsupportedEncodingException)
{
}
}
}
}
/// <summary>
/// Close the Closeable objects and <b>ignore</b> any
/// <see cref="System.IO.IOException"/>
/// or
/// null pointers. Must only be used for cleanup in exception handlers.
/// </summary>
/// <param name="log">the log to record problems to at debug level. Can be null.</param>
/// <param name="closeables">the objects to close</param>
public static void Cleanup(Org.Apache.Hadoop.Log log, params IDisposable[] closeables)
{
foreach (IDisposable c in closeables)
{
if (c != null)
{
try
{
c.Close();
}
catch (IOException e)
{
if (log != null && log.IsDebugEnabled())
{
log.Debug("Exception in closing " + c, e);
}
}
}
}
}
