Class Launcher

java.lang.Object

com.ibm.wala.util.processes.Launcher

Direct Known Subclasses:

BasicLauncher, JavaLauncher

public abstract class Launcher
extends Object

Abstract base class for a process launcher

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	Launcher.Drainer	A thread that runs in a loop, performing the drain() action until a process terminates

Field Summary

Fields

Modifier and Type	Field	Description
protected @Nullable Map<String,String>	env
protected byte @Nullable []	stdErr
protected byte @Nullable []	stdOut
protected @Nullable File	workingDir

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Launcher(boolean captureOutput, boolean captureErr, Logger logger)
protected	Launcher(Logger logger)

Method Summary

Modifier and Type	Method	Description
protected Launcher.Drainer	captureStdErr(Process p)
protected Launcher.Drainer	captureStdOut(Process p)
protected Thread	drainStdErr(Process p)
protected Thread	drainStdOut(Process p)
@Nullable Map<String,String>	getEnv()
@Nullable byte[]	getInput()
@Nullable byte[]	getStderr()
@Nullable byte[]	getStdOut()
@Nullable File	getWorkingDir()
boolean	isCaptureErr()
boolean	isCaptureOutput()
void	setEnv(Map<String,String> newEnv)
void	setInput(byte[] input)	Set input which will be fed to the launched process's stdin
protected void	setStdErr(byte[] newErr)
protected void	setStdOut(byte[] newOutput)
void	setWorkingDir(File newWorkingDir)
protected Process	spawnProcess(@Nullable String cmd)	Spawn a process to execute the given command
protected Process	spawnProcess(String[] cmd)	Spawn a process to execute the given command
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

workingDir

protected @Nullable File workingDir

env

protected @Nullable Map<String,String> env

stdOut

protected byte @Nullable [] stdOut

stdErr

protected byte @Nullable [] stdErr

Constructor Details

Launcher

protected Launcher(Logger logger)

Launcher

protected Launcher(boolean captureOutput,
 boolean captureErr,
 Logger logger)

Method Details

getWorkingDir

public @Nullable File getWorkingDir()

setWorkingDir

public void setWorkingDir(File newWorkingDir)

getEnv

public @Nullable Map<String,String> getEnv()

setEnv

public void setEnv(Map<String,String> newEnv)

toString

public String toString()

Overrides:

toString in class Object

spawnProcess

protected Process spawnProcess(@Nullable String cmd)
                        throws IllegalArgumentException,
IOException

Spawn a process to execute the given command

Returns:

an object representing the process

Throws:

IllegalArgumentException

IOException

spawnProcess

protected Process spawnProcess(String[] cmd)
                        throws IllegalArgumentException,
IOException

Spawn a process to execute the given command

Returns:

an object representing the process

Throws:

IllegalArgumentException

IOException

drainStdOut

protected Thread drainStdOut(Process p)

captureStdOut

protected Launcher.Drainer captureStdOut(Process p)

drainStdErr

protected Thread drainStdErr(Process p)

captureStdErr

protected Launcher.Drainer captureStdErr(Process p)

isCaptureOutput

public boolean isCaptureOutput()

isCaptureErr

public boolean isCaptureErr()

getStdOut

@NullUnmarked
public @Nullable byte[] getStdOut()

getStderr

@NullUnmarked
public @Nullable byte[] getStderr()

setStdOut

protected void setStdOut(byte[] newOutput)

setStdErr

protected void setStdErr(byte[] newErr)

getInput

@NullUnmarked
public @Nullable byte[] getInput()

setInput

public void setInput(byte[] input)

Set input which will be fed to the launched process's stdin