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Java Source Code / Java Documentation » Build » ANT » org.apache.tools.ant.taskdefs

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.tools.ant.taskdefs .ExecuteWatchdog

ExecuteWatchdog

public class ExecuteWatchdog implements TimeoutObserver(Code)

Destroys a process running for too long. For example:

 ExecuteWatchdog watchdog = new ExecuteWatchdog(30000);
 Execute exec = new Execute(myloghandler, watchdog);
 exec.setCommandLine(mycmdline);
 int exitvalue = exec.execute();
 if (Execute.isFailure(exitvalue) && watchdog.killedProcess()) {
 // it was killed on purpose by the watchdog
 }

See Also:   Execute
See Also:   org.apache.tools.ant.util.Watchdog
since:
   Ant 1.2

Constructor Summary
public	ExecuteWatchdog(long timeout) Creates a new watchdog with a given timeout.
public	ExecuteWatchdog(int timeout)

Method Summary
public synchronized void	checkException() This method will rethrow the exception that was possibly caught during the run of the process.
protected synchronized void	cleanUp() reset the monitor flag and the process.
public boolean	isWatching() Indicates whether or not the watchdog is still monitoring the process.
public boolean	killedProcess() Indicates whether the last process run was killed on timeout or not.
public synchronized void	start(Process process) Watches the given process and terminates it, if it runs for too long. All information from the previous run are reset. Parameters: process - the process to monitor.
public synchronized void	stop() Stops the watcher.
public synchronized void	timeoutOccured(Watchdog w) Called after watchdog has finished.

Constructor Detail

ExecuteWatchdog
public ExecuteWatchdog(long timeout)(Code)
	Creates a new watchdog with a given timeout. Parameters: timeout - the timeout for the process in milliseconds.It must be greater than 0.

ExecuteWatchdog
public ExecuteWatchdog(int timeout)(Code)
	Parameters: timeout - the timeout value to use in milliseconds. See Also: ExecuteWatchdog.ExecuteWatchdog(long)

Method Detail

checkException
public synchronized void checkException() throws BuildException(Code)
	This method will rethrow the exception that was possibly caught during the run of the process. It will only remains valid once the process has been terminated either by 'error', timeout or manual intervention. Information will be discarded once a new process is ran. throws: BuildException - a wrapped exception over the one that wassilently swallowed and stored during the process run.

cleanUp
protected synchronized void cleanUp()(Code)
	reset the monitor flag and the process.

isWatching
public boolean isWatching()(Code)
	Indicates whether or not the watchdog is still monitoring the process. `true` if the process is still running, otherwise`false`.

killedProcess
public boolean killedProcess()(Code)
	Indicates whether the last process run was killed on timeout or not. `true` if the process was killed otherwise`false`.

start
public synchronized void start(Process process)(Code)
	Watches the given process and terminates it, if it runs for too long. All information from the previous run are reset. Parameters: process - the process to monitor. It cannot be `null` throws: IllegalStateException - if a process is still being monitored.

stop
public synchronized void stop()(Code)
	Stops the watcher. It will notify all threads possibly waiting on this object.

timeoutOccured
public synchronized void timeoutOccured(Watchdog w)(Code)
	Called after watchdog has finished. This can be called in the watchdog thread Parameters: w - the watchdog

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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