DynamicLibraryBundle/NativeLibrary: Add destroy() to bundle, causing unloading of native library.

2 files changed, 42 insertions, 11 deletions

diff --git a/src/java/com/jogamp/common/os/DynamicLibraryBundle.java b/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
index b7e0739..c8bf30a 100755
--- a/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
+++ b/src/java/com/jogamp/common/os/DynamicLibraryBundle.java
@@ -71,6 +71,7 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
     private HashSet<String> toolGetProcAddressFuncNameSet;
     private List<String> toolGetProcAddressFuncNameList;
 
+    /** Instantiates and loads all {@link NativeLibrary}s incl. JNI libraries. */
     public DynamicLibraryBundle(DynamicLibraryBundleInfo info) {
         if(null==info) {
             throw new RuntimeException("Null DynamicLibraryBundleInfo");
@@ -102,6 +103,26 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
             System.err.println("     All Complete: "+isLibComplete());
         }
     }
+    
+    /** Unload all {@link NativeLibrary}s, and remove all references. */
+    public void destroy() {
+        if(DEBUG) {
+            System.err.println(Thread.currentThread().getName()+" - DynamicLibraryBundle.destroy() START: "+info.getClass().getName());
+        }
+        toolGetProcAddressFuncNameSet = null;
+        toolGetProcAddressHandle = 0;
+        for(int i = 0; i<nativeLibraries.size(); i++) {
+            nativeLibraries.get(i).close();
+        }
+        nativeLibraries.clear();
+        nativeLibraries = null;
+        toolLibNames = null;
+        glueLibNames = null;
+        if(DEBUG) {
+            System.err.println(Thread.currentThread().getName()+" - DynamicLibraryBundle.destroy() END: "+info.getClass().getName());
+        }
+        info = null;
+    }
 
     public final boolean isLibComplete() {
         return isToolLibComplete() && isGlueLibComplete() ;
@@ -267,7 +288,7 @@ public class DynamicLibraryBundle implements DynamicLookupHelper {
             }
         }
     }
-
+    
     private long dynamicLookupFunctionOnLibs(String funcName) {
         if(!isToolLibLoaded() || null==funcName) {
             if(DEBUG_LOOKUP && !isToolLibLoaded()) {
diff --git a/src/java/com/jogamp/common/os/NativeLibrary.java b/src/java/com/jogamp/common/os/NativeLibrary.java
index 5597359..68953c1 100755
--- a/src/java/com/jogamp/common/os/NativeLibrary.java
+++ b/src/java/com/jogamp/common/os/NativeLibrary.java
@@ -108,15 +108,21 @@ public class NativeLibrary implements DynamicLookupHelper {
 
   // May as well keep around the path to the library we opened
   private String libraryPath;
+  
+  private boolean global;
 
   // Private constructor to prevent arbitrary instances from floating around
-  private NativeLibrary(long libraryHandle, String libraryPath) {
+  private NativeLibrary(long libraryHandle, String libraryPath, boolean global) {
     this.libraryHandle = libraryHandle;
     this.libraryPath   = libraryPath;
+    this.global        = global;
+    if (DEBUG) {
+      System.err.println("NativeLibrary.open(): Successfully loaded: " + this);
+    }
   }
 
   public String toString() {
-    return "NativeLibrary[" + libraryPath + ", 0x" + Long.toHexString(libraryHandle) + "]";
+    return "NativeLibrary[" + libraryPath + ", 0x" + Long.toHexString(libraryHandle) + ", global " + global + "]";
   }
 
   /** Opens the given native library, assuming it has the same base
@@ -172,7 +178,7 @@ public class NativeLibrary implements DynamicLookupHelper {
     for (Iterator<String> iter = possiblePaths.iterator(); iter.hasNext(); ) {
       String path = iter.next();
       if (DEBUG) {
-        System.err.println("Trying to load " + path);
+        System.err.println("NativeLibrary.open(): Trying to load " + path);
       }
       Platform.initSingleton(); // loads native gluegen-rt library
       long res;
@@ -182,15 +188,12 @@ public class NativeLibrary implements DynamicLookupHelper {
           res = dynLink.openLibraryLocal(path, DEBUG);
       }
       if (res != 0) {
-        if (DEBUG) {
-          System.err.println("Successfully loaded " + path + ": res = 0x" + Long.toHexString(res));
-        }
-        return new NativeLibrary(res, path);
+        return new NativeLibrary(res, path, global);
       }
     }
 
     if (DEBUG) {
-      System.err.println("Did not succeed in loading (" + windowsLibName + ", " + unixLibName + ", " + macOSXLibName + ")");
+      System.err.println("NativeLibrary.open(): Did not succeed in loading (" + windowsLibName + ", " + unixLibName + ", " + macOSXLibName + ")");
     }
 
     // For now, just return null to indicate the open operation didn't
@@ -226,11 +229,18 @@ public class NativeLibrary implements DynamicLookupHelper {
   /** Closes this native library. Further lookup operations are not
       allowed after calling this method. */
   public void close() {
-    if (libraryHandle == 0)
+    if (DEBUG) {
+      System.err.println("NativeLibrary.close(): closing " + this);
+    }
+    if (libraryHandle == 0) {
       throw new RuntimeException("Library already closed");
+    }
     long handle = libraryHandle;
     libraryHandle = 0;
     dynLink.closeLibrary(handle);
+    if (DEBUG) {
+      System.err.println("NativeLibrary.close(): Successfully closed " + this);
+    }
   }
 
   /**
@@ -293,7 +303,7 @@ public class NativeLibrary implements DynamicLookupHelper {
     // from the LWJGL library
     String clPath = getPathFromClassLoader(libName, loader);
     if (DEBUG) {
-      System.err.println("Class loader path to " + libName + ": " + clPath);
+      System.err.println("NativeLibrary Class loader path to " + libName + ": " + clPath);
     }
     if (clPath != null) {
       paths.add(clPath);