libAddModuleUsesAndProvidesTest.c revision 12290:8953c0318163 
1/*
2 * Copyright (c) 2016, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#include <stdio.h>
25#include <string.h>
26#include "jvmti.h"
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32#ifndef JNI_ENV_ARG
33
34#ifdef __cplusplus
35#define JNI_ENV_ARG(x, y) y
36#define JNI_ENV_PTR(x) x
37#else
38#define JNI_ENV_ARG(x,y) x, y
39#define JNI_ENV_PTR(x) (*x)
40#endif
41
42#endif
43
44#define TranslateError(err) "JVMTI error"
45
46#define PASSED 0
47#define FAILED 2
48
49static const char *EXC_CNAME = "java/lang/Exception";
50static const char* MOD_CNAME = "Ljava/lang/reflect/Module;";
51
52static jvmtiEnv *jvmti = NULL;
53static jint result = PASSED;
54
55static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
56
57JNIEXPORT
58jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
59    return Agent_Initialize(jvm, options, reserved);
60}
61
62JNIEXPORT
63jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {
64    return Agent_Initialize(jvm, options, reserved);
65}
66
67JNIEXPORT
68jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
69    return JNI_VERSION_1_8;
70}
71
72static
73jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
74    jint res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
75                                        JVMTI_VERSION_9);
76    if (res != JNI_OK || jvmti == NULL) {
77        printf("    Error: wrong result of a valid call to GetEnv!\n");
78        return JNI_ERR;
79    }
80
81    return JNI_OK;
82}
83
84static
85jint throw_exc(JNIEnv *env, char *msg) {
86    jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
87
88    if (exc_class == NULL) {
89        printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
90        return -1;
91    }
92    return JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
93}
94
95static
96jclass jlrM(JNIEnv *env) {
97    jclass cls = NULL;
98
99    cls = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, MOD_CNAME));
100    if (cls == NULL) {
101        printf("    Error in JNI FindClass: %s\n", MOD_CNAME);
102    }
103    return cls;
104}
105
106jmethodID
107get_method(JNIEnv *env, jclass clazz, const char * name, const char *sig) {
108    jmethodID method = NULL;
109
110    method = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), name, sig);
111    if (method == NULL) {
112        printf("    Error in JNI GetMethodID %s with signature %s", name, sig);
113    }
114    return method;
115}
116
117static
118jboolean can_use_service(JNIEnv *env, jobject module, jclass service) {
119    static jmethodID mCanUse = NULL;
120    jboolean res = JNI_FALSE;
121
122    if (mCanUse == NULL) {
123        const char* sign = "(Ljava/lang/Class;)Z";
124        mCanUse = get_method(env, jlrM(env), "canUse", sign);
125    }
126    res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
127                                              mCanUse, service);
128    return res;
129}
130
131JNIEXPORT jint JNICALL
132Java_MyPackage_AddModuleUsesAndProvidesTest_checkUses(JNIEnv *env,
133                                                      jclass  cls,
134                                                      jobject baseModule,
135                                                      jclass  service) {
136    jvmtiError err = JVMTI_ERROR_NONE;
137    jboolean used = JNI_FALSE;
138
139    // Add a service to use to NULL module
140    printf("Check #UN1:\n");
141    err = (*jvmti)->AddModuleUses(jvmti, NULL, service);
142    if (err != JVMTI_ERROR_NULL_POINTER) {
143        printf("#UN1: jvmtiError from AddModuleUses: %d\n", err);
144        throw_exc(env, "Check #UN1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
145        return FAILED;
146    }
147
148    // Add NULL service to use to baseModule
149    printf("Check #UN2:\n");
150    err = (*jvmti)->AddModuleUses(jvmti, baseModule, NULL);
151    if (err != JVMTI_ERROR_NULL_POINTER) {
152        printf("#UN2: jvmtiError from AddModuleUses: %d\n", err);
153        throw_exc(env, "Check #UN2: failed to return JVMTI_ERROR_NULL_POINTER for service==NULL");
154        return FAILED;
155    }
156
157    // Add service to use to invalid module (cls)
158    printf("Check #UI1:\n");
159    err = (*jvmti)->AddModuleUses(jvmti, (jobject)cls, service);
160    if (err != JVMTI_ERROR_INVALID_MODULE) {
161        printf("#UI1: jvmtiError from AddModuleUses: %d\n", err);
162        throw_exc(env, "Check #UI1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
163        return FAILED;
164    }
165
166    // Add invalid service (thisModule) to use to baseModule
167    printf("Check #UI2:\n");
168    err = (*jvmti)->AddModuleUses(jvmti, baseModule, baseModule);
169    if (err != JVMTI_ERROR_INVALID_CLASS) {
170        printf("#UI2: jvmtiError from AddModuleUses: %d\n", err);
171        throw_exc(env, "Check #UI2: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid service");
172        return FAILED;
173    }
174
175    // Check if the service can not be used
176    printf("Check #UC1:\n");
177    used = can_use_service(env, baseModule, service);
178    if (used != JNI_FALSE) {
179        throw_exc(env, "Check #UC1: unexpected use of service");
180        return FAILED;
181    }
182
183    // Add uses of a correct service
184    printf("Check #UC2:\n");
185    err = (*jvmti)->AddModuleUses(jvmti, baseModule, service);
186    if (err != JVMTI_ERROR_NONE) {
187        printf("#UC2: jvmtiError from AddModuleUses: %d\n", err);
188        throw_exc(env, "Check #UC2: got unexpected JVMTI error");
189        return FAILED;
190    }
191
192    // Check if the service can not be used
193    printf("Check #UC3:\n");
194    used = can_use_service(env, baseModule, service);
195    if (used == JNI_FALSE) {
196        throw_exc(env, "Check #UC3: service can not be used unexpectedly");
197        return FAILED;
198    }
199    fflush(0);
200    return PASSED;
201}
202
203JNIEXPORT jint JNICALL
204Java_MyPackage_AddModuleUsesAndProvidesTest_checkProvides(JNIEnv *env,
205                                                          jclass  cls,
206                                                          jobject baseModule,
207                                                          jclass  service,
208                                                          jclass  serviceImpl) {
209   jvmtiError err = JVMTI_ERROR_NONE;
210   jboolean provided = JNI_FALSE;
211
212    // Add provides to NULL module
213    printf("Check #PN1:\n");
214    err = (*jvmti)->AddModuleProvides(jvmti, NULL, service, serviceImpl);
215    if (err != JVMTI_ERROR_NULL_POINTER) {
216        printf("#PN1: jvmtiError from AddModuleProvides: %d\n", err);
217        throw_exc(env, "Check #PN1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
218        return FAILED;
219    }
220
221    // Add provides with NULL service
222    printf("Check #PN2:\n");
223    err = (*jvmti)->AddModuleProvides(jvmti, baseModule, NULL, serviceImpl);
224    if (err != JVMTI_ERROR_NULL_POINTER) {
225        printf("#PN2: jvmtiError from AddModuleProvides: %d\n", err);
226        throw_exc(env, "Check #PN2: failed to return JVMTI_ERROR_NULL_POINTER for service==NULL");
227        return FAILED;
228    }
229
230    // Add provides with NULL serviceImpl
231    printf("Check #PN3:\n");
232    err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, NULL);
233    if (err != JVMTI_ERROR_NULL_POINTER) {
234        printf("#PN3: jvmtiError from AddModuleProvides: %d\n", err);
235        throw_exc(env, "Check #PN3: failed to return JVMTI_ERROR_NULL_POINTER for serviceImpl==NULL");
236        return FAILED;
237    }
238
239    // Add provides to invalid module (cls)
240    printf("Check #PI1:\n");
241    err = (*jvmti)->AddModuleProvides(jvmti, (jobject)cls, service, serviceImpl);
242    if (err != JVMTI_ERROR_INVALID_MODULE) {
243        printf("#PI1: jvmtiError from AddModuleProvides: %d\n", err);
244        throw_exc(env, "Check #PI1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
245        return FAILED;
246    }
247
248    // Add provides with invalid service (baseModule)
249    printf("Check #PI2:\n");
250    err = (*jvmti)->AddModuleProvides(jvmti, baseModule, baseModule, serviceImpl);
251    if (err != JVMTI_ERROR_INVALID_CLASS) {
252        printf("#PI2: jvmtiError from AddModuleProvides: %d\n", err);
253        throw_exc(env, "Check #PI2: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid service");
254        return FAILED;
255    }
256
257    // Add provides with invalid serviceImpl (baseModule)
258    printf("Check #PI3:\n");
259    err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, baseModule);
260    if (err != JVMTI_ERROR_INVALID_CLASS) {
261        printf("#PI3: jvmtiError from AddModuleProvides: %d\n", err);
262        throw_exc(env, "Check #PI3: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid serviceImpl");
263        return FAILED;
264    }
265
266    // Add provides to baseModule with correct service and serviceImpl
267    printf("Check #PC2:\n");
268    err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, serviceImpl);
269    if (err != JVMTI_ERROR_NONE) {
270        printf("#PC2: jvmtiError from AddModuleExports: %d\n", err);
271        throw_exc(env, "Check #PC2: error in add provides to baseModule with correct service and serviceImpl");
272        return FAILED;
273    }
274    fflush(0);
275    return PASSED;
276}
277
278#ifdef __cplusplus
279}
280#endif
281