From e5725d1e2539ccd8705fe59110fae4c70b7d14ce Mon Sep 17 00:00:00 2001
From: Ceriel Jacobs <c.j.h.jacobs@vu.nl>
Date: Tue, 10 Apr 2018 16:23:40 +0200
Subject: [PATCH] Removed debug prints, added cause to UnsatisfiedLinkException

---
 src/vlog/java/karmaresearch/vlog/VLog.java | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/src/vlog/java/karmaresearch/vlog/VLog.java b/src/vlog/java/karmaresearch/vlog/VLog.java
index 54db0a35..d29edfca 100644
--- a/src/vlog/java/karmaresearch/vlog/VLog.java
+++ b/src/vlog/java/karmaresearch/vlog/VLog.java
@@ -16,8 +16,6 @@
  */
 public class VLog {
 
-    private static final boolean DEBUG = false;
-
     private static final AtomicInteger VlogCounter = new AtomicInteger(0);
 
     static {
@@ -33,10 +31,6 @@ private static void loadLibrary(String s) {
         // First try to just load the shared library.
         try {
             System.loadLibrary(s);
-            if (DEBUG) {
-                System.out
-                        .println("Loaded " + s + " with System.loadLibrary()");
-            }
         } catch (Throwable ex) {
             // Did not work, now try to load it from the same directory as the
             // jar file. First determine prefix and suffix, depending on OS.
@@ -47,7 +41,9 @@ private static void loadLibrary(String s) {
                 jarFile = new File(VLog.class.getProtectionDomain()
                         .getCodeSource().getLocation().toURI());
             } catch (Throwable e) {
-                throw new UnsatisfiedLinkError(e.getMessage());
+                throw (UnsatisfiedLinkError) new UnsatisfiedLinkError(
+                        "while loading " + s + ": " + e.getMessage())
+                                .initCause(e.getCause());
             }
 
             // Next, determine OS.
@@ -69,21 +65,16 @@ private static void loadLibrary(String s) {
 
             try {
                 loadFromDir(jarFile, libName);
-                if (DEBUG) {
-                    System.out.println("Loaded " + s
-                            + " from the directory in which the jar resides");
-                }
             } catch (Throwable e) {
                 try {
                     loadFromJar(jarFile, libName, os);
-                    if (DEBUG) {
-                        System.out.println("Loaded " + s + " from the jar");
-                    }
                 } catch (Throwable e1) {
                     // System.err.println("Could not load library " + s
                     // + ", exceptions are temporarily disabled to accomodate
                     // windows version");
-                    throw new UnsatisfiedLinkError(e1.getMessage());
+                    throw (UnsatisfiedLinkError) new UnsatisfiedLinkError(
+                            "while loading " + s + ": " + e1.getMessage())
+                                    .initCause(e1.getCause());
                 }
             }
         }