dalvik.system

Class VMStack

java.lang.Object

dalvik.system.VMStack

public final class VMStack
extends Object

Provides a limited interface to the Dalvik VM stack. This class is mostly used for implementing security checks.

Constructor Summary

Constructors

Constructor and Description
VMStack()

Method Summary

Modifier and Type	Method and Description
static int	fillStackTraceElements(Thread t, StackTraceElement[] stackTraceElements) Retrieves a partial stack trace from the specified thread into the provided array.
static ClassLoader	getCallingClassLoader() Returns the defining class loader of the caller's caller.
static ClassLoader	getClosestUserClassLoader() Returns the first ClassLoader on the call stack that isn't the bootstrap class loader.
static Class<?>	getStackClass1() Returns the class of the caller's caller.
static Class<?>	getStackClass2() Returns the class of the caller's caller's caller.
static StackTraceElement[]	getThreadStackTrace(Thread t) Retrieves the stack trace from the specified thread.

Methods inherited from class java.lang.Object

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

Constructor Detail

VMStack

public VMStack()

Method Detail

getCallingClassLoader

public static ClassLoader getCallingClassLoader()

Returns the defining class loader of the caller's caller.

Returns:

the requested class loader, or null if this is the bootstrap class loader.

getStackClass1

public static Class<?> getStackClass1()

Returns the class of the caller's caller.

Returns:

the requested class, or null.

getStackClass2

public static Class<?> getStackClass2()

Returns the class of the caller's caller's caller.

Returns:

the requested class, or null.

getClosestUserClassLoader

public static ClassLoader getClosestUserClassLoader()

Returns the first ClassLoader on the call stack that isn't the bootstrap class loader.

getThreadStackTrace

public static StackTraceElement[] getThreadStackTrace(Thread t)

Retrieves the stack trace from the specified thread.

Parameters:

t - thread of interest

Returns:

an array of stack trace elements, or null if the thread doesn't have a stack trace (e.g. because it exited)

fillStackTraceElements

public static int fillStackTraceElements(Thread t,
                                         StackTraceElement[] stackTraceElements)

Retrieves a partial stack trace from the specified thread into the provided array.

Parameters:

t - thread of interest

stackTraceElements - preallocated array for use when only the top of stack is desired. Unused elements will be filled with null values.

Returns:

the number of elements filled