net.bytebuddy.agent

Interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary

All Superinterfaces:

AltCallingConvention, Library, StdCall, StdCallLibrary

Enclosing class:

VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment

protected static interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaWindowsEnvironment.WindowsLibrary
extends StdCallLibrary

A library for interacting with Windows.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and 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.win32.StdCallLibrary

StdCallLibrary.StdCallCallback

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

Library.Handler

Field Summary

Fields

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

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

FUNCTION_MAPPER, STDCALL_CONVENTION

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_TYPE_MAPPER

Method Summary

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

WinNT.HANDLE OpenMutex(int access,
                       boolean inherit,
                       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(WinNT.HANDLE handle)

Releases the supplied mutex.

Parameters:

handle - The handle to the mutex.

Returns:

true if the handle was successfully released.