org.apache.tomcat.jni

Class OS

java.lang.Object

org.apache.tomcat.jni.OS

public class OS
extends Object

OS

Author:

Mladen Turk

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	IS_BSD
static boolean	IS_LINUX
static boolean	IS_MACOSX
static boolean	IS_NETWARE
static boolean	IS_SOLARIS
static boolean	IS_UNIX
static boolean	IS_WIN32
static boolean	IS_WIN64
static int	LOG_DEBUG
static int	LOG_EMERG
static int	LOG_ERROR
static int	LOG_INFO
static int	LOG_NOTICE
static int	LOG_WARN

Constructor Summary

Constructors

Constructor and Description
OS()

Method Summary

Modifier and Type	Method and Description
static String	defaultEncoding(long pool) Get the name of the system default character set.
static String	expand(String str) Expand environment variables.
static int	info(long[] inf) Gather system info.
static String	localeEncoding(long pool) Get the name of the current locale character set.
static int	random(byte[] buf, int len) Generate random bytes.
static void	syslog(int level, String message) Log message.
static void	sysloginit(String domain) Initialize system logging.

Methods inherited from class java.lang.Object

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

Field Detail

LOG_EMERG

public static final int LOG_EMERG

See Also:

Constant Field Values

LOG_ERROR

public static final int LOG_ERROR

See Also:

Constant Field Values

LOG_NOTICE

public static final int LOG_NOTICE

See Also:

Constant Field Values

LOG_WARN

public static final int LOG_WARN

See Also:

Constant Field Values

LOG_INFO

public static final int LOG_INFO

See Also:

Constant Field Values

LOG_DEBUG

public static final int LOG_DEBUG

See Also:

Constant Field Values

IS_UNIX

public static final boolean IS_UNIX

IS_NETWARE

public static final boolean IS_NETWARE

IS_WIN32

public static final boolean IS_WIN32

IS_WIN64

public static final boolean IS_WIN64

IS_LINUX

public static final boolean IS_LINUX

IS_SOLARIS

public static final boolean IS_SOLARIS

IS_BSD

public static final boolean IS_BSD

IS_MACOSX

public static final boolean IS_MACOSX

Constructor Detail

OS

public OS()

Method Detail

defaultEncoding

public static String defaultEncoding(long pool)

Get the name of the system default character set.

Parameters:

pool - the pool to allocate the name from, if needed

Returns:

the encoding

localeEncoding

public static String localeEncoding(long pool)

Get the name of the current locale character set. Defers to apr_os_default_encoding if the current locale's data can't be retrieved on this system.

Parameters:

pool - the pool to allocate the name from, if needed

Returns:

the encoding

random

public static int random(byte[] buf,
                         int len)

Generate random bytes.

Parameters:

buf - Buffer to fill with random bytes

len - Length of buffer in bytes

Returns:

the operation status

info

public static int info(long[] inf)

Gather system info.

 On exit the inf array will be filled with:
 inf[0]  - Total usable main memory size
 inf[1]  - Available memory size
 inf[2]  - Total page file/swap space size
 inf[3]  - Page file/swap space still available
 inf[4]  - Amount of shared memory
 inf[5]  - Memory used by buffers
 inf[6]  - Memory Load

 inf[7]  - Idle Time in microseconds
 inf[8]  - Kernel Time in microseconds
 inf[9]  - User Time in microseconds

 inf[10] - Process creation time (apr_time_t)
 inf[11] - Process Kernel Time in microseconds
 inf[12] - Process User Time in microseconds

 inf[13] - Current working set size.
 inf[14] - Peak working set size.
 inf[15] - Number of page faults.
 

Parameters:

inf - array that will be filled with system information. Array length must be at least 16.

Returns:

the operation status

expand

public static String expand(String str)

Expand environment variables.

Parameters:

str - String to expand

Returns:

Expanded string with replaced environment variables.

sysloginit

public static void sysloginit(String domain)

Initialize system logging.

Parameters:

domain - String that will be prepended to every message

syslog

public static void syslog(int level,
                          String message)

Log message.

Parameters:

level - Log message severity. See LOG_XXX enums.

message - Message to log