--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.instrument/share/native/libinstrument/Utilities.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * Copyright 2003 Wily Technology, Inc.
+ */
+
+#include    <stdlib.h>
+#include    <stdio.h>
+
+#include    "JPLISAssert.h"
+#include    "Utilities.h"
+#include    "JavaExceptions.h"
+
+/*
+ *  This module provides various simple JNI and JVMTI utility functionality.
+ */
+
+void *
+allocate(jvmtiEnv * jvmtienv, size_t bytecount) {
+    void *          resultBuffer    = NULL;
+    jvmtiError      error           = JVMTI_ERROR_NONE;
+
+    error = (*jvmtienv)->Allocate(jvmtienv,
+                                  bytecount,
+                                  (unsigned char**) &resultBuffer);
+    /* may be called from any phase */
+    jplis_assert(error == JVMTI_ERROR_NONE);
+    if ( error != JVMTI_ERROR_NONE ) {
+        resultBuffer = NULL;
+    }
+    return resultBuffer;
+}
+
+/**
+ * Convenience method that deallocates memory.
+ * Throws assert on error.
+ * JVMTI Deallocate can only fail due to internal error, that is, this
+ * agent has done something wrong or JVMTI has done something wrong.  These
+ * errors aren't interesting to a JPLIS agent and so are not returned.
+ */
+void
+deallocate(jvmtiEnv * jvmtienv, void * buffer) {
+    jvmtiError  error = JVMTI_ERROR_NONE;
+
+    error = (*jvmtienv)->Deallocate(jvmtienv,
+                                    (unsigned char*)buffer);
+    /* may be called from any phase */
+    jplis_assert_msg(error == JVMTI_ERROR_NONE, "Can't deallocate memory");
+    return;
+}
+
+/**
+ *  Returns whether the passed exception is an instance of the given classname
+ *  Clears any JNI exceptions before returning
+ */
+jboolean
+isInstanceofClassName(  JNIEnv *        jnienv,
+                        jobject         instance,
+                        const char *    className) {
+    jboolean    isInstanceof        = JNI_FALSE;
+    jboolean    errorOutstanding    = JNI_FALSE;
+    jclass      classHandle         = NULL;
+
+    jplis_assert(isSafeForJNICalls(jnienv));
+
+    /* get an instance of unchecked exception for instanceof comparison */
+    classHandle = (*jnienv)->FindClass(jnienv, className);
+    errorOutstanding = checkForAndClearThrowable(jnienv);
+    jplis_assert(!errorOutstanding);
+
+    if (!errorOutstanding) {
+        isInstanceof = (*jnienv)->IsInstanceOf(jnienv, instance, classHandle);
+        errorOutstanding = checkForAndClearThrowable(jnienv);
+        jplis_assert(!errorOutstanding);
+    }
+
+    jplis_assert(isSafeForJNICalls(jnienv));
+    return isInstanceof;
+}
+
+/* We don't come back from this
+*/
+void
+abortJVM(   JNIEnv *        jnienv,
+            const char *    message) {
+    (*jnienv)->FatalError(jnienv, message);
+}