[GR-30291] Fix GIL related performance regression.

PullRequest: graalpython/1712

Author: gilles-duboscq

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/PythonContext.java

@@ -230,7 +230,7 @@ private static final class AtExitHook {
 
     private static final Assumption singleNativeContext = Truffle.getRuntime().createAssumption("single native context assumption");
 
-    private ReentrantLock globalInterpreterLock = new ReentrantLock();
+    private final ReentrantLock globalInterpreterLock = new ReentrantLock();
 
     /** The thread-local state object. */
     private ThreadLocal<PThreadState> customThreadState;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/runtime/object/PythonObjectFactory.java

@@ -39,8 +39,8 @@
 import com.oracle.graal.python.builtins.modules.PosixModuleBuiltins.PosixFileHandle;
 import com.oracle.graal.python.builtins.modules.bz2.BZ2Object;
 import com.oracle.graal.python.builtins.modules.io.PBuffered;
-import com.oracle.graal.python.builtins.modules.lzma.LZMAObject;
 import com.oracle.graal.python.builtins.modules.io.PFileIO;
+import com.oracle.graal.python.builtins.modules.lzma.LZMAObject;
 import com.oracle.graal.python.builtins.modules.zlib.ZLibCompObject;
 import com.oracle.graal.python.builtins.objects.array.PArray;
 import com.oracle.graal.python.builtins.objects.bytes.PByteArray;
@@ -223,7 +223,7 @@ public final Shape getShape(Object cls) {
         return executeGetShape(cls, true);
     }
 
-    public final synchronized <T> T trace(T allocatedObject) {
+    public final <T> T trace(T allocatedObject) {
         executeTrace(allocatedObject, AllocationReporter.SIZE_UNKNOWN);
         return allocatedObject;
     }