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 /*
25 */
26
27 #include <stdio.h>
28 #include <string.h>
29 #include "jvmti.h"
30 #include "jni_tools.h"
31 #include "agent_common.h"
32 #include "JVMTITools.h"
33
34 extern "C" {
35
36
37 #define PASSED 0
38 #define STATUS_FAILED 2
39
40 static jvmtiEnv *jvmti = NULL;
41 static jvmtiCapabilities caps;
42 static jint result = PASSED;
43 static jboolean printdump = JNI_FALSE;
44 static jmethodID mid = NULL;
45
46 void print_LocalVariableEntry(jvmtiLocalVariableEntry *lvt_elem) {
47 printf("\n Var name: %s, slot: %d", lvt_elem->name, lvt_elem->slot);
48 printf(", start_bci: %" LL "d", lvt_elem->start_location);
49 printf(", end_bci: %" LL "d", lvt_elem->start_location + lvt_elem->length);
50 printf(", signature: %s\n", lvt_elem->signature);
51 }
52
53 #ifdef STATIC_BUILD
54 JNIEXPORT jint JNICALL Agent_OnLoad_getlocal004(JavaVM *jvm, char *options, void *reserved) {
55 return Agent_Initialize(jvm, options, reserved);
56 }
57 JNIEXPORT jint JNICALL Agent_OnAttach_getlocal004(JavaVM *jvm, char *options, void *reserved) {
58 return Agent_Initialize(jvm, options, reserved);
59 }
60 JNIEXPORT jint JNI_OnLoad_getlocal004(JavaVM *jvm, char *options, void *reserved) {
61 return JNI_VERSION_1_8;
62 }
63 #endif
64 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
65 jint res;
66 jvmtiError err;
67
68 if (options != NULL && strcmp(options, "printdump") == 0) {
69 printdump = JNI_TRUE;
70 }
71
72 res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
73 if (res != JNI_OK || jvmti == NULL) {
74 printf("Wrong result of a valid call to GetEnv!\n");
75 return JNI_ERR;
76 }
77
78 err = jvmti->GetPotentialCapabilities(&caps);
79 if (err != JVMTI_ERROR_NONE) {
80 printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
81 TranslateError(err), err);
82 return JNI_ERR;
83 }
84
85 err = jvmti->AddCapabilities(&caps);
86 if (err != JVMTI_ERROR_NONE) {
87 printf("(AddCapabilities) unexpected error: %s (%d)\n",
88 TranslateError(err), err);
89 return JNI_ERR;
90 }
91
92 err = jvmti->GetCapabilities(&caps);
93 if (err != JVMTI_ERROR_NONE) {
94 printf("(GetCapabilities) unexpected error: %s (%d)\n",
95 TranslateError(err), err);
96 return JNI_ERR;
97 }
98
99 if (!caps.can_access_local_variables) {
100 printf("Warning: Access to local variables is not implemented\n");
101 }
102
103 return JNI_OK;
104 }
105
106 JNIEXPORT void JNICALL
107 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_getMeth(JNIEnv *env, jclass cls) {
108 if (jvmti == NULL) {
109 printf("JVMTI client was not properly loaded!\n");
110 result = STATUS_FAILED;
111 return;
112 }
113
114 if (!caps.can_access_local_variables ||
115 !caps.can_generate_method_exit_events) return;
116
117 mid = env->GetStaticMethodID(cls, "staticMeth", "(I)I");
118 if (mid == NULL) {
119 printf("Cannot find Method ID for staticMeth\n");
120 result = STATUS_FAILED;
121 return;
122 }
123
124 fflush(stdout);
125 }
126
127 void checkErrorCodeIn(jvmtiError err, jint slot) {
128 if (err != JVMTI_ERROR_NONE) {
129 printf(" FAILURE: JVMTI_ERROR_NONE is expected, slot: %d\n\n", slot);
130 result = STATUS_FAILED;
131 } else {
132 printf(" success: JVMTI_ERROR_NONE as expected, slot: %d\n\n", slot);
133 }
134 }
135
136 void checkErrorCodeOut(jvmtiError err, jint slot) {
137 if (err != JVMTI_ERROR_INVALID_SLOT) {
138 printf(" FAILURE: JVMTI_ERROR_INVALID_SLOT is expected, slot: %d\n\n", slot);
139 result = STATUS_FAILED;
140 } else {
141 printf(" success: JVMTI_ERROR_INVALID_SLOT as expected, slot: %d\n\n", slot);
142 }
143 }
144
145 #define CHECK_ERROR_CODE(scope_no, err, slot) \
146 if (scope_no == 1) { \
147 checkErrorCodeOut(err, slot); \
148 } else { \
149 checkErrorCodeIn(err, slot); \
150 }
151
152 JNIEXPORT void JNICALL
153 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_checkLoc(JNIEnv *env,
154 jclass cls, jthread thr, jint scope_no) {
155 jvmtiError err = JVMTI_ERROR_NONE;
156 jint slot = 0;
157 jint locInt = 0;
158 jlong locLong = 0L;
159 jdouble locDouble = 0.0f;
160
161 if (jvmti == NULL) {
162 return;
163 }
164 printf("\n ----------------- checkLoc: %d -----------------\n\n", scope_no);
165
166 /* Check for slots which has to be available in general */
167 for (slot = 3; slot < 5; slot++) {
168 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
169 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
170 CHECK_ERROR_CODE(scope_no, err, slot);
171
172 if (err == JVMTI_ERROR_NONE) {
173 printf(" slot%d: %d\n", slot, locInt);
174 }
175
176 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
177 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
178 CHECK_ERROR_CODE(scope_no, err, slot);
179
180 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
181 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
182 CHECK_ERROR_CODE(scope_no, err, slot);
183 }
184
185 /* Slot 5 is special: it's not for 64 bit values! */
186 slot = 5; {
187 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
188 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
189 CHECK_ERROR_CODE(scope_no, err, slot);
190
191 if (err == JVMTI_ERROR_NONE) {
192 printf(" slot%d: %d\n", slot, locInt);
193 }
194
195 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
196 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
197 checkErrorCodeOut(err, slot);
198
199 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
200 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
201 checkErrorCodeOut(err, slot);
202 }
203
204 /* Check for slots which has to be unavailable in general */
205 for (slot = 6; slot < 8; slot++) {
206 err = jvmti->GetLocalInt(thr, 1, slot, &locInt);
207 printf(" GetLocalInt: %s (%d)\n", TranslateError(err), err);
208 checkErrorCodeOut(err, slot);
209
210 if (err == JVMTI_ERROR_NONE) {
211 printf(" slot%d: %d\n", slot, locInt);
212 }
213
214 err = jvmti->GetLocalLong(thr, 1, slot, &locLong);
215 printf(" GetLocalLong: %s (%d)\n", TranslateError(err), err);
216 checkErrorCodeOut(err, slot);
217
218 err = jvmti->GetLocalDouble(thr, 1, slot, &locDouble);
219 printf(" GetLocalDouble: %s (%d)\n", TranslateError(err), err);
220 checkErrorCodeOut(err, slot);
221 }
222
223 fflush(stdout);
224 }
225
226 JNIEXPORT jint JNICALL
227 Java_nsk_jvmti_unit_GetLocalVariable_getlocal004_getRes(JNIEnv *env, jclass cls) {
228 return result;
229 }
230
231 }