com.threerings.util.unsafe

Class Unsafe

java.lang.Object

com.threerings.util.unsafe.Unsafe

public class Unsafe
extends Object

A native library for doing unsafe things. Don't use this library. If you must ignore that warning, then be sure you use it sparingly and only in very well considered cases.

Constructor Summary

Constructors

Constructor and Description
Unsafe()

Method Summary

Modifier and Type	Method and Description
static boolean	setegid(int gid) Sets the process' effective gid to the specified value.
static boolean	seteuid(int uid) Sets the process' effective uid to the specified value.
static void	setGCEnabled(boolean enabled) Enables or disables garbage collection.
static boolean	setgid(int gid) Sets the process' gid to the specified value.
static boolean	setuid(int uid) Sets the process' uid to the specified value.
static void	sleep(int millis) Causes the current thread to block for the specified number of milliseconds.

Methods inherited from class java.lang.Object

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

Constructor Detail

Unsafe

public Unsafe()

Method Detail

setGCEnabled

public static void setGCEnabled(boolean enabled)

Enables or disables garbage collection. Warning: you will be fucked if you leave it disabled for too long. Do not do this unless you are dang sure about what you're doing and are prepared to test your code on every platform this side of Nantucket.

Calls to this method do not nest. Regardless of how many times you disable GC, only one call is required to reenable it.

sleep

public static void sleep(int millis)

Causes the current thread to block for the specified number of milliseconds. This exists primarily to work around the fact that on Linux, Thread.sleep(long) is only accurate to around 12ms which is wholly unacceptable.

setuid

public static boolean setuid(int uid)

Sets the process' uid to the specified value.

Returns:

true if the uid was changed, false if we were unable to do so.

setgid

public static boolean setgid(int gid)

Sets the process' gid to the specified value.

Returns:

true if the gid was changed, false if we were unable to do so.

seteuid

public static boolean seteuid(int uid)

Sets the process' effective uid to the specified value.

Returns:

true if the euid was changed, false if we were unable to do so.

setegid

public static boolean setegid(int gid)

Sets the process' effective gid to the specified value.

Returns:

true if the egid was changed, false if we were unable to do so.