1 /*
2 * Copyright (c) 2003, 2018, 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 #include "jni_tools.h"
28 #include "agent_common.h"
29 #include "JVMTITools.h"
30
31 extern "C" {
32
33
34 #define STATUS_PASSED 0
35 #define STATUS_FAILED 2
36
37 static jvmtiEnv *jvmti = NULL;
38 static jint result = STATUS_PASSED;
39 static jboolean printdump = JNI_FALSE;
40
41 void print_LocalVariableEntry(jvmtiLocalVariableEntry *lvt_elem) {
42 printf("\n Var name: %s, slot: %d", lvt_elem->name, lvt_elem->slot);
43 printf(", start_bci: %" LL "d", lvt_elem->start_location);
44 printf(", end_bci: %" LL "d", lvt_elem->start_location + lvt_elem->length);
45 printf(", signature: %s\n", lvt_elem->signature);
46 }
47
48 #ifdef STATIC_BUILD
49 JNIEXPORT jint JNICALL Agent_OnLoad_getlocal004(JavaVM *jvm, char *options, void *reserved) {
50 return Agent_Initialize(jvm, options, reserved);
51 }
52 JNIEXPORT jint JNICALL Agent_OnAttach_getlocal004(JavaVM *jvm, char *options, void *reserved) {
53 return Agent_Initialize(jvm, options, reserved);
54 }
55 JNIEXPORT jint JNI_OnLoad_getlocal004(JavaVM *jvm, char *options, void *reserved) {
56 return JNI_VERSION_1_8;
57 }
58 #endif
59 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
60 jint res;
61 jvmtiError err;
62 static jvmtiCapabilities caps;
63
64 if (options != NULL && strcmp(options, "printdump") == 0) {
65 printdump = JNI_TRUE;
66 }
67
68 res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
69 if (res != JNI_OK || jvmti == NULL) {
70 printf("Wrong result of a valid call to GetEnv!\n");
71 return JNI_ERR;
72 }
73
74 err = jvmti->GetPotentialCapabilities(&caps);
75 if (err != JVMTI_ERROR_NONE) {
76 printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
77 TranslateError(err), err);
78 return JNI_ERR;
79 }
80
81 err = jvmti->AddCapabilities(&caps);
82 if (err != JVMTI_ERROR_NONE) {
83 printf("(AddCapabilities) unexpected error: %s (%d)\n",
84 TranslateError(err), err);
85 return JNI_ERR;
86 }
87
88 err = jvmti->GetCapabilities(&caps);
89 if (err != JVMTI_ERROR_NONE) {
90 printf("(GetCapabilities) unexpected error: %s (%d)\n",
91 TranslateError(err), err);
92 return JNI_ERR;
93 }
94
95 if (!caps.can_access_local_variables) {
96 printf("Warning: Access to local variables is not implemented\n");
97 return JNI_ERR;
98 }
99 if (!caps.can_access_local_variables) {
100 printf("Warning: Access to local variables is not implemented\n");
101 return JNI_ERR;
102 }
103 return JNI_OK;
104 }
105
106 JNIEXPORT void JNICALL
107 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_getMeth(JNIEnv *env, jclass cls) {
108 jmethodID mid = NULL;
109
110 if (jvmti == NULL) {
111 printf("JVMTI client was not properly loaded!\n");
112 result = STATUS_FAILED;
113 return;
114 }
115
116 mid = env->GetStaticMethodID(cls, "staticMeth", "(I)I");
117 if (mid == NULL) {
118 printf("Cannot find Method ID for staticMeth\n");
119 result = STATUS_FAILED;
120 return;
121 }
122 fflush(stdout);
123 }
124
125 void checkErrorCodeIn(jvmtiError err, jint slot) {
126 if (err != JVMTI_ERROR_NONE) {
127 printf(" FAILURE: JVMTI_ERROR_NONE is expected, slot: %d\n\n", slot);
128 result = STATUS_FAILED;
129 } else {
130 printf(" success: JVMTI_ERROR_NONE as expected, slot: %d\n\n", slot);
131 }
132 }
133
134 void checkErrorCodeOut(jvmtiError err, jint slot) {
135 if (err != JVMTI_ERROR_INVALID_SLOT) {
136 printf(" FAILURE: JVMTI_ERROR_INVALID_SLOT is expected, slot: %d\n\n", slot);
137 result = STATUS_FAILED;
138 } else {
139 printf(" success: JVMTI_ERROR_INVALID_SLOT as expected, slot: %d\n\n", slot);
140 }
141 }
142
143 #define CHECK_ERROR_CODE(scope_no, err, slot) \
144 if (scope_no == 1) { \
145 checkErrorCodeOut(err, slot); \
146 } else { \
147 checkErrorCodeIn(err, slot); \
148 }
149
150 JNIEXPORT void JNICALL
151 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_checkLoc(JNIEnv *env,
152 jclass cls, jthread thr, jint scope_no) {
153 jvmtiError err = JVMTI_ERROR_NONE;
154 jint slot = 0;
155 jint locInt = 0;
156 jlong locLong = 0L;
157 jdouble locDouble = 0.0f;
158
159 if (jvmti == NULL) {
160 return;
161 }
162 printf("\n ----------------- checkLoc: %d -----------------\n\n", scope_no);
163
164 /* Check for slots which has to be available in general */
165 for (slot = 3; slot < 5; slot++) {
166 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
167 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
168 CHECK_ERROR_CODE(scope_no, err, slot);
169
170 if (err == JVMTI_ERROR_NONE) {
171 printf(" slot%d: %d\n", slot, locInt);
172 }
173
174 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
175 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
176 CHECK_ERROR_CODE(scope_no, err, slot);
177
178 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
179 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
180 CHECK_ERROR_CODE(scope_no, err, slot);
181 }
182
183 /* Slot 5 is special: it's not for 64 bit values! */
184 slot = 5; {
185 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
186 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
187 CHECK_ERROR_CODE(scope_no, err, slot);
188
189 if (err == JVMTI_ERROR_NONE) {
190 printf(" slot%d: %d\n", slot, locInt);
191 }
192
193 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
194 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
195 checkErrorCodeOut(err, slot);
196
197 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
198 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
199 checkErrorCodeOut(err, slot);
200 }
201
202 /* Check for slots which has to be unavailable in general */
203 for (slot = 6; slot < 8; slot++) {
204 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
205 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
206 checkErrorCodeOut(err, slot);
207
208 if (err == JVMTI_ERROR_NONE) {
209 printf(" slot%d: %d\n", slot, locInt);
210 }
211
212 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
213 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
214 checkErrorCodeOut(err, slot);
215
216 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
217 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
218 checkErrorCodeOut(err, slot);
219 }
220
221 fflush(stdout);
222 }
223
224 JNIEXPORT jint JNICALL
225 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_getRes(JNIEnv *env, jclass cls) {
226 return result;
227 }
228
229 }