Package net.bytebuddy.agent

Interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary

All Superinterfaces:

com.sun.jna.AltCallingConvention, com.sun.jna.Library, com.sun.jna.win32.StdCall, com.sun.jna.win32.StdCallLibrary

Enclosing class:

VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment

protected static interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary
extends com.sun.jna.win32.StdCallLibrary

A library for interacting with Windows.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary.SecurityAttributes	A structure representing a mutex's security attributes.

Nested classes/interfaces inherited from interface com.sun.jna.Library

com.sun.jna.Library.Handler

Nested classes/interfaces inherited from interface com.sun.jna.win32.StdCallLibrary

com.sun.jna.win32.StdCallLibrary.StdCallCallback

Field Summary

Fields

Modifier and Type	Field	Description
static int	SEMAPHORE_ALL_ACCESS	Indicates that a semaphore requires all access rights.

Fields inherited from interface com.sun.jna.Library

OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_CLASSLOADER, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_OPEN_FLAGS, OPTION_STRING_ENCODING, OPTION_STRUCTURE_ALIGNMENT, OPTION_SYMBOL_PROVIDER, OPTION_TYPE_MAPPER

Fields inherited from interface com.sun.jna.win32.StdCallLibrary

FUNCTION_MAPPER, STDCALL_CONVENTION

Method Summary

Modifier and Type	Method	Description
com.sun.jna.platform.win32.WinNT.HANDLE	CreateMutex(VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary.SecurityAttributes attributes, boolean owner, java.lang.String name)	Create or opens a mutex.
com.sun.jna.platform.win32.WinNT.HANDLE	CreateSemaphoreW(com.sun.jna.platform.win32.WinBase.SECURITY_ATTRIBUTES securityAttributes, long count, long maximumCount, java.lang.String name)	Creates a new semaphore.
com.sun.jna.platform.win32.WinNT.HANDLE	OpenMutex(int access, boolean inherit, java.lang.String name)	Opens an existing object.
com.sun.jna.platform.win32.WinNT.HANDLE	OpenSemaphoreW(int access, boolean inheritHandle, java.lang.String name)	Opens an existing semaphore.
boolean	ReleaseMutex(com.sun.jna.platform.win32.WinNT.HANDLE handle)	Releases the supplied mutex.
boolean	ReleaseSemaphore(com.sun.jna.platform.win32.WinNT.HANDLE handle, long count, java.lang.Long previousCount)	Releases the semaphore.

Field Detail

SEMAPHORE_ALL_ACCESS

static final int SEMAPHORE_ALL_ACCESS

Indicates that a semaphore requires all access rights.

See Also:

Constant Field Values

Method Detail

OpenSemaphoreW

@MaybeNull
com.sun.jna.platform.win32.WinNT.HANDLE OpenSemaphoreW(int access,
                                                       boolean inheritHandle,
                                                       java.lang.String name)

Opens an existing semaphore.

Parameters:

access - The access rights.

inheritHandle - true if the handle is inherited.

name - The semaphore's name.

Returns:

The handle or null if the handle could not be created.

CreateSemaphoreW

@MaybeNull
com.sun.jna.platform.win32.WinNT.HANDLE CreateSemaphoreW(@MaybeNull
                                                         com.sun.jna.platform.win32.WinBase.SECURITY_ATTRIBUTES securityAttributes,
                                                         long count,
                                                         long maximumCount,
                                                         java.lang.String name)

Creates a new semaphore.

Parameters:

securityAttributes - The security attributes for the created semaphore.

count - The initial count for the semaphore.

maximumCount - The maximum count for the semaphore.

name - The semaphore's name.

Returns:

The handle or null if the handle could not be created.

ReleaseSemaphore

boolean ReleaseSemaphore(com.sun.jna.platform.win32.WinNT.HANDLE handle,
                         long count,
                         @MaybeNull
                         java.lang.Long previousCount)

Releases the semaphore.

Parameters:

handle - The semaphore's handle.

count - The amount with which to increase the semaphore.

previousCount - The previous count of the semaphore or null.

Returns:

true if the semaphore was successfully released.

CreateMutex

@MaybeNull
com.sun.jna.platform.win32.WinNT.HANDLE CreateMutex(VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary.SecurityAttributes attributes,
                                                    boolean owner,
                                                    java.lang.String name)

Create or opens a mutex.

Parameters:

attributes - The mutex's security attributes.

owner - true if the caller is supposed to be the initial owner.

name - The mutex name.

Returns:

The handle to the mutex or null if the mutex could not be created.

OpenMutex

com.sun.jna.platform.win32.WinNT.HANDLE OpenMutex(int access,
                                                  boolean inherit,
                                                  java.lang.String name)

Opens an existing object.

Parameters:

access - The required access privileges.

inherit - true if the mutex should be inherited.

name - The mutex's name.

Returns:

The handle or null if the mutex could not be opened.

ReleaseMutex

boolean ReleaseMutex(com.sun.jna.platform.win32.WinNT.HANDLE handle)

Releases the supplied mutex.

Parameters:

handle - The handle to the mutex.

Returns:

true if the handle was successfully released.