added synchronization mechanism around makeContextCurrent by adding a freeCurrentContext method and n object lock

fixes some typos as well


git-svn-id: file:///home/mbien/NetBeansProjects/JOGAMP/joal-sync/git-svn/../svn-server-sync/joal/trunk@41 03bf7f67-59de-4072-a415-9a990d468a3f

2 files changed, 23 insertions, 12 deletions

diff --git a/src/java/net/java/games/joal/ALCImpl.java b/src/java/net/java/games/joal/ALCImpl.java
index ed5906e..d621a0a 100644
--- a/src/java/net/java/games/joal/ALCImpl.java
+++ b/src/java/net/java/games/joal/ALCImpl.java
@@ -37,16 +37,16 @@ import java.util.HashMap;
 
 final class ALCImpl implements ALC {
     private final HashMap contextMap = new HashMap();
+    private static Object lock = new Object();
 
     ALCImpl() {
         System.loadLibrary("joal");
-        /*
+        
         Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
             public void run() {
                 exit();
             }
         }));
-        */
     }
 
     public Device alcOpenDevice(String deviceName) {
@@ -84,17 +84,28 @@ final class ALCImpl implements ALC {
 
     public int alcMakeContextCurrent(Context context) {
         int result = 0;
-        int pointer = 0;
-
-        if (context != null) {
-            pointer = context.pointer;
+        synchronized(lock) {
+            int pointer = 0;
+            if (context != null) {
+                pointer = context.pointer;
+            }
+            result = makeContextCurrentNative(pointer);
+            try {
+                lock.wait();
+            } catch (InterruptedException e) {
+                result = 0;
+            }
         }
-
-        result = makeContextCurrentNative(pointer);
-
         return result;
     }
 
+    public void alcFreeCurrentContext() {
+        synchronized(lock) {
+            makeContextCurrentNative(0);
+            lock.notifyAll();
+        }
+    }
+
     private native int makeContextCurrentNative(int pointer);
 
     public void alcProcessContext(Context context) {
diff --git a/src/java/net/java/games/sound3d/Source.java b/src/java/net/java/games/sound3d/Source.java
index b6ecf37..5e4183d 100644
--- a/src/java/net/java/games/sound3d/Source.java
+++ b/src/java/net/java/games/sound3d/Source.java
@@ -148,7 +148,7 @@ public final class Source {
      * Gets the max distance where there will no longer be any attenuation of
      * the source.
      *
-     * @param the max ditance for source attentuation.
+     * @return the max ditance for source attentuation.
      */
     public float getMaxDistance() {
         float[] result = new float[1];
@@ -255,7 +255,7 @@ public final class Source {
     /**
      * Gets the gain when outside the oriented cone.
      *
-     * @param coneOuterGain the gain when outside the oriented cone.
+     * @return the gain when outside the oriented cone.
      */
     public float getConeOuterGain() {
         float[] result = new float[1];
@@ -422,7 +422,7 @@ public final class Source {
     /**
      * indicates whether looping is turned on or off. 
      *
-     * @param isLooping true-looping is on, false-looping is off
+     * @return true-looping is on, false-looping is off
      */
     public boolean getLooping() {
         boolean result = false;