org.jruby.ext.ffi

Class Platform

java.lang.Object

org.jruby.ext.ffi.Platform

Direct Known Subclasses:

Platform.Default, Platform.Supported, Platform.Unsupported

public class Platform
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Platform.AIX A Platform subclass representing the Linux operating system.
static class	Platform.CPU_TYPE
private static class	Platform.Darwin A Platform subclass representing the MacOS system.
private static class	Platform.Default
private static class	Platform.Linux A Platform subclass representing the Linux operating system.
static class	Platform.OS_TYPE
private static class	Platform.SingletonHolder
private static class	Platform.Supported
private static class	Platform.Unsupported
private static class	Platform.Windows A Platform subclass representing the Windows system.

Field Summary

Fields

Modifier and Type	Field and Description
private long	addressMask
protected int	addressSize
static int	BIG_ENDIAN
static int	BYTE_ORDER
static Platform.CPU_TYPE	CPU
private int	javaVersionMajor
static java.lang.String	LIBC
protected java.util.regex.Pattern	libPattern
static java.lang.String	LIBPREFIX
static java.lang.String	LIBSUFFIX
static int	LITTLE_ENDIAN
private static java.util.Locale	LOCALE
protected int	longSize
static java.lang.String	NAME
static Platform.OS_TYPE	OS

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Platform(Platform.OS_TYPE os)

Method Summary

Modifier and Type	Method and Description
long	addressMask() Gets the 32/64bit mask of a C address/pointer on the native platform.
int	addressSize() Gets the size of a C address/pointer on the native platform.
static IRubyObject	bsd_p(ThreadContext context, IRubyObject recv)
static void	createPlatformModule(Ruby runtime, RubyModule ffi)
private static Platform.CPU_TYPE	determineCPU()
private static java.lang.String	determineLibC()
private static java.lang.String	determineLibExt()
private static Platform.OS_TYPE	determineOS()
private static Platform	determinePlatform(Platform.OS_TYPE os)
Platform.CPU_TYPE	getCPU() Gets the current processor architecture the JVM is running on.
int	getJavaMajorVersion() Gets the version of the Java Virtual Machine (JVM) jffi is running on.
java.lang.String	getName() Gets the name of this Platform.
Platform.OS_TYPE	getOS() Gets the current Operating System.
static Platform	getPlatform() Gets the current Platform
static java.lang.String	getProperty(java.lang.String property, java.lang.String defValue) An extension over System.getProperty method.
boolean	isBSD()
boolean	isSupported()
boolean	isUnix()
static IRubyObject	linux_p(ThreadContext context, IRubyObject recv)
int	longSize() Gets the size of a C 'long' on the native platform.
static IRubyObject	mac_p(ThreadContext context, IRubyObject recv)
java.lang.String	mapLibraryName(java.lang.String libName)
static IRubyObject	solaris_p(ThreadContext context, IRubyObject recv)
private static boolean	startsWithIgnoreCase(java.lang.String s1, java.lang.String s2)
static IRubyObject	unix_p(ThreadContext context, IRubyObject recv)
static IRubyObject	windows_p(ThreadContext context, IRubyObject recv)

Methods inherited from class java.lang.Object

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

Field Detail

LOCALE

private static final java.util.Locale LOCALE

CPU

public static final Platform.CPU_TYPE CPU

OS

public static final Platform.OS_TYPE OS

NAME

public static final java.lang.String NAME

LIBPREFIX

public static final java.lang.String LIBPREFIX

LIBSUFFIX

public static final java.lang.String LIBSUFFIX

LIBC

public static final java.lang.String LIBC

BIG_ENDIAN

public static final int BIG_ENDIAN

See Also:

Constant Field Values

LITTLE_ENDIAN

public static final int LITTLE_ENDIAN

See Also:

Constant Field Values

BYTE_ORDER

public static final int BYTE_ORDER

addressSize

protected final int addressSize

longSize

protected final int longSize

addressMask

private final long addressMask

libPattern

protected final java.util.regex.Pattern libPattern

javaVersionMajor

private final int javaVersionMajor

Constructor Detail

Platform

protected Platform(Platform.OS_TYPE os)

Method Detail

determineOS

private static final Platform.OS_TYPE determineOS()

determinePlatform

private static final Platform determinePlatform(Platform.OS_TYPE os)

determineCPU

private static final Platform.CPU_TYPE determineCPU()

determineLibC

private static final java.lang.String determineLibC()

determineLibExt

private static final java.lang.String determineLibExt()

getPlatform

public static final Platform getPlatform()

Gets the current Platform

Returns:

The current platform.

getOS

public final Platform.OS_TYPE getOS()

Gets the current Operating System.

Returns:

A OS value representing the current Operating System.

getCPU

public final Platform.CPU_TYPE getCPU()

Gets the current processor architecture the JVM is running on.

Returns:

A CPU value representing the current processor architecture.

getJavaMajorVersion

public final int getJavaMajorVersion()

Gets the version of the Java Virtual Machine (JVM) jffi is running on.

Returns:

A number representing the java version. e.g. 5 for java 1.5, 6 for java 1.6

isBSD

public final boolean isBSD()

isUnix

public final boolean isUnix()

isSupported

public final boolean isSupported()

createPlatformModule

public static void createPlatformModule(Ruby runtime,
                                        RubyModule ffi)

windows_p

public static IRubyObject windows_p(ThreadContext context,
                                    IRubyObject recv)

mac_p

public static IRubyObject mac_p(ThreadContext context,
                                IRubyObject recv)

unix_p

public static IRubyObject unix_p(ThreadContext context,
                                 IRubyObject recv)

bsd_p

public static IRubyObject bsd_p(ThreadContext context,
                                IRubyObject recv)

linux_p

public static IRubyObject linux_p(ThreadContext context,
                                  IRubyObject recv)

solaris_p

public static IRubyObject solaris_p(ThreadContext context,
                                    IRubyObject recv)

getProperty

public static java.lang.String getProperty(java.lang.String property,
                                           java.lang.String defValue)

An extension over System.getProperty method. Handles security restrictions, and returns the default value if the access to the property is restricted.

Parameters:

property - The system property name.

defValue - The default value.

Returns:

The value of the system property, or the default value.

longSize

public final int longSize()

Gets the size of a C 'long' on the native platform.

Returns:

the size of a long in bits

addressSize

public final int addressSize()

Gets the size of a C address/pointer on the native platform.

Returns:

the size of a pointer in bits

addressMask

public final long addressMask()

Gets the 32/64bit mask of a C address/pointer on the native platform.

Returns:

the size of a pointer in bits

getName

public java.lang.String getName()

Gets the name of this Platform.

Returns:

The name of this platform.

mapLibraryName

public java.lang.String mapLibraryName(java.lang.String libName)

startsWithIgnoreCase

private static boolean startsWithIgnoreCase(java.lang.String s1,
                                            java.lang.String s2)