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 "agent_common.h"
28
29 #include "nsk_tools.h"
30 #include "JVMTITools.h"
31 #include "jvmti_tools.h"
32 #include "jni_tools.h"
33
34 extern "C" {
35
36 #define STATUS_FAILED 2
37 #define PASSED 0
38
39 #define METH_NUM 2
40 static const char *METHODS[][2] = {
41 {"bpMethod", "()V"},
42 {"bpMethod2", "()I"}
43 };
44
45 static const char *CLASS_SIG =
46 "Lnsk/jvmti/Breakpoint/breakpoint001;";
47
48 static const char *THREAD_NAME = "breakpoint001Thr";
49
50 static volatile int bpEvents[METH_NUM];
51 static volatile jint result = PASSED;
52 static jvmtiEnv *jvmti = NULL;
53 static jvmtiEventCallbacks callbacks;
54
55 static int vm_started = 0;
56 static jrawMonitorID agent_lock;
57
58 static void initCounters() {
59 int i;
60
61 for(i=0; i<METH_NUM; i++)
62 bpEvents[i] = 0;
63 }
64
65 static void setBP(jvmtiEnv *jvmti_env, JNIEnv *env, jclass klass) {
66 jmethodID mid;
67 int i;
68
69 for (i=0; i<METH_NUM; i++) {
70 if (!NSK_JNI_VERIFY(env, (mid = NSK_CPP_STUB4(GetMethodID,
71 env, klass, METHODS[i][0], METHODS[i][1])) != NULL))
72 NSK_CPP_STUB2(FatalError, env,
73 "failed to get ID for the java method\n");
74
75 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetBreakpoint,
76 jvmti_env, mid, 0)))
77 NSK_CPP_STUB2(FatalError, env,
78 "failed to set breakpoint\n");
79 }
80 }
81
82 /** callback functions **/
83 void JNICALL
84 ClassLoad(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, jclass klass) {
85 char *sig, *generic;
86
87 jvmti->RawMonitorEnter(agent_lock);
88
89 if (vm_started) {
90 // GetClassSignature may be called only during the start or the live phase
91 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
92 jvmti_env, klass, &sig, &generic)))
93 NSK_CPP_STUB2(FatalError, env,
94 "failed to obtain a class signature\n");
95
96 if (sig != NULL && (strcmp(sig, CLASS_SIG) == 0)) {
97 NSK_DISPLAY1(
98 "ClassLoad event received for the class \"%s\"\n"
99 "\tsetting breakpoints ...\n",
100 sig);
101 setBP(jvmti_env, env, klass);
102 }
103 }
104
105 jvmti->RawMonitorExit(agent_lock);
106 }
107
108 void JNICALL
109 Breakpoint(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
110 jmethodID method, jlocation location) {
111 jclass klass;
112 char *clsSig, *generic, *methNam, *methSig;
113 jvmtiThreadInfo thr_info;
114 int checkStatus = PASSED;
115 int i;
116
117 NSK_DISPLAY0(">>>> Breakpoint event received\n");
118
119 /* checking thread info */
120 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo,
121 jvmti_env, thread, &thr_info))) {
122 result = STATUS_FAILED;
123 NSK_COMPLAIN0("TEST FAILED: unable to get thread info during Breakpoint callback\n\n");
124 return;
125 }
126 if (thr_info.name == NULL ||
127 strcmp(thr_info.name,THREAD_NAME) != 0 ||
128 thr_info.is_daemon==JNI_TRUE) {
129 result = checkStatus = STATUS_FAILED;
130 NSK_COMPLAIN2(
131 "TEST FAILED: Breakpoint event with unexpected thread info:\n"
132 "\tname: \"%s\"\ttype: %s thread\n\n",
133 (thr_info.name == NULL)?"NULL":thr_info.name,
134 (thr_info.is_daemon==JNI_TRUE)?"deamon":"user");
135 }
136 else
137 NSK_DISPLAY2("CHECK PASSED: thread name: \"%s\"\ttype: %s thread\n",
138 thr_info.name, (thr_info.is_daemon==JNI_TRUE)?"deamon":"user");
139
140 /* checking location */
141 if (location != 0) {
142 result = checkStatus = STATUS_FAILED;
143 NSK_COMPLAIN1("TEST FAILED: Breakpoint event with unexpected location %ld:\n\n",
144 (long) location);
145 }
146 else
147 NSK_DISPLAY1("CHECK PASSED: location: %ld as expected\n",
148 (long) location);
149
150 /* checking method info */
151 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetMethodDeclaringClass,
152 jvmti_env, method, &klass))) {
153 result = checkStatus = STATUS_FAILED;
154 NSK_COMPLAIN0("TEST FAILED: unable to get method declaring class during Breakpoint callback\n\n");
155 return;
156 }
157 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
158 jvmti_env, klass, &clsSig, &generic))) {
159 result = checkStatus = STATUS_FAILED;
160 NSK_COMPLAIN0("TEST FAILED: unable to obtain a class signature during Breakpoint callback\n\n");
161 return;
162 }
163 if (clsSig == NULL ||
164 strcmp(clsSig,CLASS_SIG) != 0) {
165 result = checkStatus = STATUS_FAILED;
166 NSK_COMPLAIN1(
167 "TEST FAILED: Breakpoint event with unexpected class signature:\n"
168 "\t\"%s\"\n\n",
169 (clsSig == NULL) ? "NULL" : clsSig);
170 }
171 else
172 NSK_DISPLAY1("CHECK PASSED: class signature: \"%s\"\n",
173 clsSig);
174
175 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
176 jvmti_env, method, &methNam, &methSig, NULL))) {
177 result = checkStatus = STATUS_FAILED;
178 NSK_COMPLAIN0("TEST FAILED: unable to get method name during Breakpoint callback\n\n");
179 return;
180 }
181
182 for (i=0; i<METH_NUM; i++)
183 if (strcmp(methNam,METHODS[i][0]) &&
184 strcmp(methSig,METHODS[i][1])) {
185 NSK_DISPLAY2("CHECK PASSED: method name: \"%s\"\tsignature: \"%s\"\n",
186 methNam, methSig);
187 if (checkStatus == PASSED)
188 bpEvents[i]++;
189 break;
190 }
191
192 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
193 jvmti_env, (unsigned char*) methNam))) {
194 result = STATUS_FAILED;
195 NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
196 }
197 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
198 jvmti_env, (unsigned char*) methSig))) {
199 result = STATUS_FAILED;
200 NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method signature\n\n");
201 }
202
203 NSK_DISPLAY0("<<<<\n\n");
204 }
205
206
207 void JNICALL
208 VMStart(jvmtiEnv *jvmti_env, JNIEnv* jni_env) {
209 jvmti->RawMonitorEnter(agent_lock);
210
211 vm_started = 1;
212
213 jvmti->RawMonitorExit(agent_lock);
214 }
215
216 /************************/
217
218 JNIEXPORT jint JNICALL
219 Java_nsk_jvmti_Breakpoint_breakpoint001_check(
220 JNIEnv *env, jobject obj) {
221 int i;
222
223 for (i=0; i<METH_NUM; i++) {
224 if (bpEvents[i] != 1) {
225 result = STATUS_FAILED;
226 NSK_COMPLAIN3(
227 "TEST FAILED: wrong number of Breakpoint events\n"
228 "\tfor the method \"%s %s\":\n"
229 "\t\tgot: %d\texpected: 1\n",
230 METHODS[i][0], METHODS[i][1], bpEvents[i]);
231 }
232 else
233 NSK_DISPLAY3("CHECK PASSED: %d Breakpoint event(s) for the method \"%s %s\" as expected\n",
234 bpEvents[i], METHODS[i][0], METHODS[i][1]);
235 }
236
237 return result;
238 }
239
240 #ifdef STATIC_BUILD
241 JNIEXPORT jint JNICALL Agent_OnLoad_breakpoint001(JavaVM *jvm, char *options, void *reserved) {
242 return Agent_Initialize(jvm, options, reserved);
243 }
244 JNIEXPORT jint JNICALL Agent_OnAttach_breakpoint001(JavaVM *jvm, char *options, void *reserved) {
245 return Agent_Initialize(jvm, options, reserved);
246 }
247 JNIEXPORT jint JNI_OnLoad_breakpoint001(JavaVM *jvm, char *options, void *reserved) {
248 return JNI_VERSION_1_8;
249 }
250 #endif
251 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
252 jvmtiCapabilities caps;
253
254 /* init framework and parse options */
255 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
256 return JNI_ERR;
257
258 /* create JVMTI environment */
259 if (!NSK_VERIFY((jvmti =
260 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
261 return JNI_ERR;
262
263 initCounters();
264
265 /* add capability to generate compiled method events */
266 memset(&caps, 0, sizeof(jvmtiCapabilities));
267 caps.can_generate_breakpoint_events = 1;
268 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,
269 jvmti, &caps)))
270 return JNI_ERR;
271
272 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,
273 jvmti, &caps)))
274 return JNI_ERR;
275
276 if (!caps.can_generate_single_step_events)
277 NSK_DISPLAY0("Warning: generation of single step events is not implemented\n");
278
279 /* set event callback */
280 NSK_DISPLAY0("setting event callbacks ...\n");
281 (void) memset(&callbacks, 0, sizeof(callbacks));
282 callbacks.ClassLoad = &ClassLoad;
283 callbacks.Breakpoint = &Breakpoint;
284 callbacks.VMStart = &VMStart;
285 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
286 jvmti, &callbacks, sizeof(callbacks))))
287 return JNI_ERR;
288
289 NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
290
291 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
292 jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_START, NULL)))
293 return JNI_ERR;
294 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
295 jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_LOAD, NULL)))
296 return JNI_ERR;
297 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
298 jvmti, JVMTI_ENABLE, JVMTI_EVENT_BREAKPOINT, NULL)))
299 return JNI_ERR;
300 NSK_DISPLAY0("enabling the events done\n\n");
301
302 if (jvmti->CreateRawMonitor("agent_lock", &agent_lock) != JVMTI_ERROR_NONE) {
303 return JNI_ERR;
304 }
305
306 return JNI_OK;
307 }
308
309 }