-package simgrid.msg;\r
-\r
-public class Sem { \r
- private int permits_;\r
- \r
- public Sem(int i) {\r
- permits_ = i;\r
- }\r
- \r
- public void acquire() throws InterruptedException {\r
- \r
- if (Thread.interrupted()) \r
- throw new InterruptedException();\r
- \r
- synchronized(this) {\r
- \r
- try {\r
- while (permits_ <= 0) \r
- wait();\r
- \r
- --permits_;\r
- }\r
- catch (InterruptedException ex) {\r
- notify();\r
- throw ex;\r
- }\r
- }\r
- }\r
-\r
- public synchronized void release() {\r
- ++(this.permits_);\r
- notify();\r
- }\r
-}\r
+/*\r
+ * Simple semaphore implementation, from Doug Lea (public domain)\r
+ *\r
+ * Copyright 2006,2007,2010 The SimGrid Team \r
+ * All right reserved. \r
+ *\r
+ * This program is free software; you can redistribute \r
+ * it and/or modify it under the terms of the license \r
+ *(GNU LGPL) which comes with this package. \r
+ */ \r
+\rpackage simgrid.msg;
+\r\rpublic class Sem {\r
+ /******************************************************************/ \r
+ /* Simple semaphore implementation, from Doug Lea (public domain) */ \r
+ /******************************************************************/ \r
+ private int permits_;
+\r public Sem(int i) {\r permits_ = i;\r } \r\r public void acquire() throws InterruptedException {
+ if (Thread.interrupted())
+ throw new InterruptedException();
+\r synchronized(this) {
+ try {
+ while (permits_ <= 0)
+ wait();
+ --permits_;
+ }
+ catch(InterruptedException ex) {
+ notify();
+ throw ex;
+ }
+ }
+ }
+\r public synchronized void release() {
+ ++(this.permits_);
+ notify();
+ } \r} \r
