net.bytebuddy.agent

Interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment.PosixLibrary

All Superinterfaces:

com.sun.jna.Library

Enclosing class:

VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment

protected static interface VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment.PosixLibrary
extends com.sun.jna.Library

An API for interaction with POSIX systems.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment.PosixLibrary.SemaphoreOperation A structure to represent a semaphore operation for semop.

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

com.sun.jna.Library.Handler

Field Summary

Fields

Modifier and Type	Field and Description
static int	EAGAIN Indicates that a request timed out.
static int	EDEADLK Indicates a dead lock on a resource.
static int	ESRCH Indicates that a process does not exist.
static short	IPC_NOWAIT Indicates that one should not wait for the release of a semaphore if it is not currently available.
static int	NULL_SIGNAL A null signal.
static short	SEM_UNDO Indicates that a semaphore's operations should be undone at process shutdown.

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
int	chmod(String path, int mode) Runs the chmod command.
int	chown(String path, long userId) Runs the chown command.
int	ftok(String path, int id) Runs the ftok command.
int	getpid() Runs the getpid command.
int	getuid() Runs the getuid command.
int	kill(int processId, int signal) Runs the kill command.
int	semget(int key, int count, int flags) Runs the semget command.
int	semop(int id, VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment.PosixLibrary.SemaphoreOperation operation, int flags) Runs the semop command.

Field Detail

NULL_SIGNAL

static final int NULL_SIGNAL

A null signal.

See Also:

Constant Field Values

ESRCH

static final int ESRCH

Indicates that a process does not exist.

See Also:

Constant Field Values

EAGAIN

static final int EAGAIN

Indicates that a request timed out.

See Also:

Constant Field Values

EDEADLK

static final int EDEADLK

Indicates a dead lock on a resource.

See Also:

Constant Field Values

SEM_UNDO

static final short SEM_UNDO

Indicates that a semaphore's operations should be undone at process shutdown.

See Also:

Constant Field Values

IPC_NOWAIT

static final short IPC_NOWAIT

Indicates that one should not wait for the release of a semaphore if it is not currently available.

See Also:

Constant Field Values

Method Detail

getpid

int getpid()
    throws com.sun.jna.LastErrorException

Runs the getpid command.

Returns:

The command's return value.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

getuid

int getuid()
    throws com.sun.jna.LastErrorException

Runs the getuid command.

Returns:

The command's return value.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

kill

int kill(int processId,
         int signal)
  throws com.sun.jna.LastErrorException

Runs the kill command.

Parameters:

processId - The target process id.

signal - The signal to send.

Returns:

The command's return value.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

chmod

int chmod(String path,
          int mode)
   throws com.sun.jna.LastErrorException

Runs the chmod command.

Parameters:

path - The file path.

mode - The mode to set.

Returns:

The return code.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

chown

int chown(String path,
          long userId)
   throws com.sun.jna.LastErrorException

Runs the chown command.

Parameters:

path - The file path.

userId - The user id to set.

Returns:

The return code.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

ftok

int ftok(String path,
         int id)
  throws com.sun.jna.LastErrorException

Runs the ftok command.

Parameters:

path - The file path.

id - The id being used for creating the generated key.

Returns:

The generated key.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

semget

int semget(int key,
           int count,
           int flags)
    throws com.sun.jna.LastErrorException

Runs the semget command.

Parameters:

key - The key of the semaphore.

count - The initial count of the semaphore.

flags - The flags to set.

Returns:

The id of the semaphore.

Throws:

com.sun.jna.LastErrorException - If an error occurred.

semop

int semop(int id,
          VirtualMachine.ForOpenJ9.Dispatcher.ForJnaPosixEnvironment.PosixLibrary.SemaphoreOperation operation,
          int flags)
   throws com.sun.jna.LastErrorException

Runs the semop command.

Parameters:

id - The id of the semaphore.

operation - The initial count of the semaphore.

flags - The flags to set.

Returns:

The return code.

Throws:

com.sun.jna.LastErrorException - If the operation was not successful.