jdk/src/jdk.jdwp.agent/share/native/libjdwp/ModuleReferenceImpl.c
changeset 36511 9d0388c6b336
child 42338 a60f280f803c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.jdwp.agent/share/native/libjdwp/ModuleReferenceImpl.c	Thu Mar 17 19:04:16 2016 +0000
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+
+#include "util.h"
+#include "inStream.h"
+#include "outStream.h"
+#include "ModuleReferenceImpl.h"
+
+
+static jclass jlrM(JNIEnv *env) {
+    return findClass(env, "Ljava/lang/reflect/Module;");
+}
+
+static jboolean
+getName(PacketInputStream *in, PacketOutputStream *out)
+{
+    static jmethodID method = NULL;
+    JNIEnv *env = getEnv();
+    char *name = NULL;
+    jstring namestr;
+    jobject module;
+
+    if (method == NULL) {
+        method = getMethod(env, jlrM(env), "getName", "()Ljava/lang/String;");
+    }
+    module = inStream_readModuleRef(getEnv(), in);
+    if (inStream_error(in)) {
+        return JNI_TRUE;
+    }
+    namestr = (jstring)JNI_FUNC_PTR(env, CallObjectMethod) (env, module, method);
+    if (namestr != NULL) {
+        name = (char*)JNI_FUNC_PTR(env, GetStringUTFChars)(env, namestr, NULL);
+    } else {
+        // The JDWP converts null into an empty string
+    }
+    (void)outStream_writeString(out, name);
+    if (name != NULL) {
+        jvmtiDeallocate(name);
+    }
+    return JNI_TRUE;
+}
+
+static jboolean
+getClassLoader(PacketInputStream *in, PacketOutputStream *out)
+{
+    static jmethodID method = NULL;
+    JNIEnv *env = getEnv();
+    jobject loader;
+    jobject module;
+
+    if (method == NULL) {
+        method = getMethod(env, jlrM(env), "getClassLoader", "()Ljava/lang/ClassLoader;");
+    }
+    module = inStream_readModuleRef(env, in);
+    if (inStream_error(in)) {
+        return JNI_TRUE;
+    }
+    loader = JNI_FUNC_PTR(env, CallObjectMethod) (env, module, method);
+
+    (void)outStream_writeObjectRef(env, out, loader);
+    return JNI_TRUE;
+}
+
+static jboolean
+canRead(PacketInputStream *in, PacketOutputStream *out)
+{
+    static jmethodID method = NULL;
+    JNIEnv *env = getEnv();
+    jboolean can_read;
+    jobject module;
+    jobject source_module;
+
+    if (method == NULL) {
+        method = getMethod(env, jlrM(env), "canRead", "(Ljava/lang/reflect/Module;)Z");
+    }
+    module = inStream_readModuleRef(env, in);
+    if (inStream_error(in)) {
+        return JNI_TRUE;
+    }
+    source_module = inStream_readModuleRef(env, in);
+    if (inStream_error(in)) {
+        return JNI_TRUE;
+    }
+    can_read = JNI_FUNC_PTR(env, CallBooleanMethod)
+        (env, module, method, source_module);
+
+    (void)outStream_writeBoolean(out, can_read);
+    return JNI_TRUE;
+}
+
+
+void *ModuleReference_Cmds[] = { (void *)3
+    ,(void *)getName
+    ,(void *)getClassLoader
+    ,(void *)canRead
+};