org.jacoco.core.runtime

Class SystemPropertiesRuntime

java.lang.Object

org.jacoco.core.runtime.AbstractRuntime

org.jacoco.core.runtime.SystemPropertiesRuntime

All Implemented Interfaces:

IExecutionDataAccessorGenerator, IRuntime

public class SystemPropertiesRuntime
extends AbstractRuntime

This IRuntime implementation makes the execution data available through a special entry in the System.getProperties() hash table. The advantage is, that the instrumented classes do not get dependencies to other classes than the JRE library itself. This runtime may cause problems in environments with security restrictions, in applications that replace the system properties or in applications that fail if non-String values are placed in the system properties.

Field Summary

Fields inherited from class org.jacoco.core.runtime.AbstractRuntime

data

Constructor Summary

Constructors

Constructor and Description
SystemPropertiesRuntime() Creates a new runtime.

Method Summary

Modifier and Type	Method and Description
int	generateDataAccessor(long classid, String classname, int probecount, org.objectweb.asm.MethodVisitor mv) This method generates the byte code required to obtain the coverage data structure for the class with the given id.
void	shutdown() Allows the coverage runtime to cleanup internals.
void	startup(RuntimeData data) Subclasses must call this method when overwriting it.

Methods inherited from class org.jacoco.core.runtime.AbstractRuntime

createRandomId

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemPropertiesRuntime

public SystemPropertiesRuntime()

Creates a new runtime.

Method Detail

generateDataAccessor

public int generateDataAccessor(long classid,
                                String classname,
                                int probecount,
                                org.objectweb.asm.MethodVisitor mv)

Description copied from interface: IExecutionDataAccessorGenerator

This method generates the byte code required to obtain the coverage data structure for the class with the given id. Typically the instrumentation process will embed this code into a method that is called on class initialization. This method can be called at any time even outside the target VM. The generated code must push a boolean[] instance to the operand stack. Except this result object the generated code must not make any assumptions about the structure of the embedding method or class. The generated code must not use or allocate local variables.

Parameters:

classid - identifier of the class

classname - VM class name

probecount - probe count for this class

mv - code output

Returns:

additional stack size required by the implementation, including the instance pushed to the stack

startup

public void startup(RuntimeData data)
             throws Exception

Description copied from class: AbstractRuntime

Subclasses must call this method when overwriting it.

Specified by:

startup in interface IRuntime

Overrides:

startup in class AbstractRuntime

Parameters:

data - the execution data for this runtime

Throws:

Exception - any internal problem during startup

shutdown

public void shutdown()

Description copied from interface: IRuntime

Allows the coverage runtime to cleanup internals. This class should be called when classes instrumented for this runtime are not used any more.