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Created by magnum on October 22, 2012 20:03:05 Last update: October 22, 2012 20:03:05
First, the test command that sleeps random number of seconds ( sleeper.sh ):
#!/bin/bash stime=$[$RANDOM % 20] sleep $sti...As comparison, synchronous pipe code:
#include <sys/wait.h> #include <stdio.h> #in...Asynchronous pipe code:
#include <sys/wait.h> #include <stdio.h> #in...
Created by Dr. Xi on April 27, 2011 15:58:31 Last update: April 27, 2011 20:05:22
From JavaDoc : java.util.concurrent.locks.ReentrantLock is a reentrant mutual exclusion Lock with the same basic behavior and semantics as the implicit monitor lock accessed using synchronized methods and statements, but with extended capabilities. The extended capabilities are: tryLock() : acquire the lock if possible, otherwise immediately return false. tryLock(long timeout, TimeUnit unit) : acquire the lock within the timeout, return false after timeout. lockInterruptibly() : try to acquire the lock and enter wait state, but can be interrupted by other threads and exit waiting. The following shows how java.util.concurrent.locks.ReentrantLock can be used. Start two threads to manipulate the same counter, one incrementing, the other decrementing. Since the counter is incremented and decremented the same number of times, in the end, it should be 0. Without locking,...
Created by Dr. Xi on October 26, 2010 04:47:37 Last update: January 11, 2011 20:00:36
<!doctype html> <html> <head> <style typ...
Created by magnum on December 03, 2010 08:53:18 Last update: December 03, 2010 08:54:23
You can use the ntfsresize utility on Linux to shrink or expand an NTFS partition (boot, for example, with the DRBL live cd). To shrink an NTFS partition: shrink NTFS (the file system) with ntfsresize. re-create a smaller partition to hold the shrinked file system with FDisk. To expand an NTFS partition: Recreate a partition that's bigger than the previous one. expand NTFS to the full size of the new partition. The following are from excerpts from ntfsresize FAQ (Frequently Asked Questions) : ntfsresize help:
[tinker:root]:(~)# ntfsresize -h ntfsresize v1....ntfsresize example session:
[tinker:root]:(~)# ntfsresize -s11000M /dev/hd...Fdisk example session:
[tinker:root]:(~)# fdisk /dev/hdc ...