1 /*

     2  * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 #include "util.h"

    27 #include "inStream.h"

    28 #include "outStream.h"

    29 #include "ModuleReferenceImpl.h"

    30 

    31 

    32 static jclass jlM(JNIEnv *env) {

    33     return findClass(env, "Ljava/lang/Module;");

    34 }

    35 

    36 static jboolean

    37 getName(PacketInputStream *in, PacketOutputStream *out)

    38 {

    39     static jmethodID method = NULL;

    40     JNIEnv *env = getEnv();

    41     char *name = NULL;

    42     jstring namestr;

    43     jobject module;

    44 

    45     if (method == NULL) {

    46         method = getMethod(env, jlM(env), "getName", "()Ljava/lang/String;");

    47     }

    48     module = inStream_readModuleRef(getEnv(), in);

    49     if (inStream_error(in)) {

    50         return JNI_TRUE;

    51     }

    52     namestr = (jstring)JNI_FUNC_PTR(env, CallObjectMethod) (env, module, method);

    53     if (namestr != NULL) {

    54         name = (char*)JNI_FUNC_PTR(env, GetStringUTFChars)(env, namestr, NULL);

    55     } else {

    56         // The JDWP converts null into an empty string

    57     }

    58     (void)outStream_writeString(out, name);

    59     if (name != NULL) {

    60         JNI_FUNC_PTR(env, ReleaseStringUTFChars)(env, namestr, name);

    61     }

    62     return JNI_TRUE;

    63 }

    64 

    65 static jboolean

    66 getClassLoader(PacketInputStream *in, PacketOutputStream *out)

    67 {

    68     static jmethodID method = NULL;

    69     JNIEnv *env = getEnv();

    70     jobject loader;

    71     jobject module;

    72 

    73     if (method == NULL) {

    74         method = getMethod(env, jlM(env), "getClassLoader", "()Ljava/lang/ClassLoader;");

    75     }

    76     module = inStream_readModuleRef(env, in);

    77     if (inStream_error(in)) {

    78         return JNI_TRUE;

    79     }

    80     loader = JNI_FUNC_PTR(env, CallObjectMethod) (env, module, method);

    81 

    82     (void)outStream_writeObjectRef(env, out, loader);

    83     return JNI_TRUE;

    84 }

    85 

    86 

    87 void *ModuleReference_Cmds[] = { (void *)3

    88     ,(void *)getName

    89     ,(void *)getClassLoader

    90 };