1 /*
2 * Copyright (c) 2004, 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 <stdlib.h>
25 #include <string.h>
26 #include "jni_tools.h"
27 #include "agent_common.h"
28 #include "jvmti_tools.h"
29
30 #define PASSED 0
31 #define STATUS_FAILED 2
32
33 extern "C" {
34
35 /* ========================================================================== */
36
37 /* scaffold objects */
38 static jlong timeout = 0;
39
40 /* test objects */
41 static jthread thread = NULL;
42
43 /* event counts */
44 static int MethodEntryEventsCount = 0;
45
46 /* ========================================================================== */
47
48 /** callback functions **/
49
50 static void JNICALL
51 MethodEntry(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
52 jthread thread, jmethodID method) {
53 char *name = NULL;
54 char *signature = NULL;
55
56 MethodEntryEventsCount++;
57 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
58 jvmti_env, method, &name, &signature, NULL))) {
59 nsk_jvmti_setFailStatus();
60 return;
61 }
62 NSK_DISPLAY2("MethodEntry event: %s%s\n", name, signature);
63 if (name != NULL)
64 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
65 if (signature != NULL)
66 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
67 }
68
69 /* ========================================================================== */
70
71 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
72 const char* THREAD_NAME = "Debuggee Thread";
73 jvmtiThreadInfo info;
74 jthread *threads = NULL;
75 jint threads_count = 0;
76 int i;
77
78 NSK_DISPLAY0("Prepare: find tested thread\n");
79
80 /* get all live threads */
81 if (!NSK_JVMTI_VERIFY(
82 NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads)))
83 return NSK_FALSE;
84
85 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
86 return NSK_FALSE;
87
88 /* find tested thread */
89 for (i = 0; i < threads_count; i++) {
90 if (!NSK_VERIFY(threads[i] != NULL))
91 return NSK_FALSE;
92
93 /* get thread information */
94 if (!NSK_JVMTI_VERIFY(
95 NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info)))
96 return NSK_FALSE;
97
98 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
99
100 /* find by name */
101 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
102 thread = threads[i];
103 }
104 }
105
106 if (!NSK_JNI_VERIFY(jni, (thread =
107 NSK_CPP_STUB2(NewGlobalRef, jni, thread)) != NULL))
108 return NSK_FALSE;
109
110 /* deallocate threads list */
111 if (!NSK_JVMTI_VERIFY(
112 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads)))
113 return NSK_FALSE;
114
115 return NSK_TRUE;
116 }
117
118 /* ========================================================================== */
119
120 /** Agent algorithm. */
121 static void JNICALL
122 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
123
124 if (!nsk_jvmti_waitForSync(timeout))
125 return;
126
127 if (!prepare(jvmti, jni)) {
128 nsk_jvmti_setFailStatus();
129 return;
130 }
131
132 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
133 jvmti, JVMTI_ENABLE, JVMTI_EVENT_METHOD_ENTRY, thread)))
134 nsk_jvmti_setFailStatus();
135
136 /* resume debugee and wait for sync */
137 if (!nsk_jvmti_resumeSync())
138 return;
139 if (!nsk_jvmti_waitForSync(timeout))
140 return;
141
142 NSK_DISPLAY1("MethodEntry events received: %d\n",
143 MethodEntryEventsCount);
144 if (!NSK_VERIFY(MethodEntryEventsCount != 0))
145 nsk_jvmti_setFailStatus();
146
147 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, thread));
148
149 if (!nsk_jvmti_resumeSync())
150 return;
151 }
152
153 /* ========================================================================== */
154
155 /** Agent library initialization. */
156 #ifdef STATIC_BUILD
157 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t002(JavaVM *jvm, char *options, void *reserved) {
158 return Agent_Initialize(jvm, options, reserved);
159 }
160 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t002(JavaVM *jvm, char *options, void *reserved) {
161 return Agent_Initialize(jvm, options, reserved);
162 }
163 JNIEXPORT jint JNI_OnLoad_ma10t002(JavaVM *jvm, char *options, void *reserved) {
164 return JNI_VERSION_1_8;
165 }
166 #endif
167 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
168 jvmtiEnv* jvmti = NULL;
169 jvmtiCapabilities caps;
170 jvmtiEventCallbacks callbacks;
171
172 NSK_DISPLAY0("Agent_OnLoad\n");
173
174 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
175 return JNI_ERR;
176
177 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
178
179 if (!NSK_VERIFY((jvmti =
180 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
181 return JNI_ERR;
182
183 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
184 return JNI_ERR;
185
186 memset(&caps, 0, sizeof(caps));
187 caps.can_generate_method_entry_events = 1;
188 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
189 return JNI_ERR;
190 }
191
192 memset(&callbacks, 0, sizeof(callbacks));
193 callbacks.MethodEntry = &MethodEntry;
194 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
195 return JNI_ERR;
196
197 return JNI_OK;
198 }
199
200 /* ========================================================================== */
201
202 }