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 #define SAMPLE_TAG ((jlong) 222222)
33
34 extern "C" {
35
36 /* ========================================================================== */
37
38 /* scaffold objects */
39 static jlong timeout = 0;
40
41 /* test objects */
42 static jobject testedObject = NULL;
43 static int ObjectFreeEventsCount = 0;
44
45 /* ========================================================================== */
46
47 /** callback functions **/
48
49 void JNICALL ObjectFree(jvmtiEnv *jvmti_env, jlong tag) {
50 char buffer[32], buffer2[32];
51
52 ObjectFreeEventsCount++;
53
54 NSK_DISPLAY1("ObjectFree event, tag = %s\n", jlong_to_string(tag, buffer));
55 if (tag != SAMPLE_TAG) {
56 if (tag == 0) {
57 NSK_COMPLAIN0("testedObject not tagged\n");
58 } else {
59 NSK_COMPLAIN2("testedObject tagged incorrectly, expected=%s, got=%s\n",
60 jlong_to_string(SAMPLE_TAG, buffer),
61 jlong_to_string(tag, buffer2));
62 }
63 nsk_jvmti_setFailStatus();
64 }
65 }
66
67 void JNICALL VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {
68 NSK_DISPLAY0("VMDeath event\n");
69
70 if (ObjectFreeEventsCount == 0) {
71 NSK_DISPLAY0("Warning: no object free events\n");
72 }
73
74 if (nsk_jvmti_isFailStatus()) {
75 exit(NSK_STATUS_BASE + NSK_STATUS_FAILED);
76 }
77 }
78
79 /* ========================================================================== */
80
81 static int prepare(JNIEnv* jni) {
82 const char* CLASS_NAME = "nsk/jvmti/scenarios/multienv/MA04/ma04t003";
83 const char* FIELD_NAME = "testedObject2";
84 const char* FIELD_SIGNATURE = "Ljava/lang/Object;";
85 jclass cls = NULL;
86 jfieldID fid = NULL;
87
88 NSK_DISPLAY0("Obtain tested object from a static field of debugee class\n");
89
90 NSK_DISPLAY1("Find class: %s\n", CLASS_NAME);
91 if (!NSK_JNI_VERIFY(jni, (cls =
92 NSK_CPP_STUB2(FindClass, jni, CLASS_NAME)) != NULL))
93 return NSK_FALSE;
94
95 NSK_DISPLAY2("Find field: %s:%s\n", FIELD_NAME, FIELD_SIGNATURE);
96 if (!NSK_JNI_VERIFY(jni, (fid =
97 NSK_CPP_STUB4(GetStaticFieldID, jni, cls,
98 FIELD_NAME, FIELD_SIGNATURE)) != NULL))
99 return NSK_FALSE;
100
101 if (!NSK_JNI_VERIFY(jni, (testedObject =
102 NSK_CPP_STUB3(GetStaticObjectField, jni, cls, fid)) != NULL))
103 return NSK_FALSE;
104
105 if (!NSK_JNI_VERIFY(jni, (testedObject =
106 NSK_CPP_STUB2(NewGlobalRef, jni, testedObject)) != NULL))
107 return NSK_FALSE;
108
109 return NSK_TRUE;
110 }
111
112 /* ========================================================================== */
113
114 /** Agent algorithm. */
115 static void JNICALL
116 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
117
118 if (!nsk_jvmti_waitForSync(timeout))
119 return;
120
121 if (!prepare(jni)) {
122 nsk_jvmti_setFailStatus();
123 return;
124 }
125
126 NSK_DISPLAY0("Set tag on testedObject\n");
127 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetTag, jvmti, testedObject,
128 SAMPLE_TAG))) {
129 nsk_jvmti_setFailStatus();
130 return;
131 }
132
133 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, testedObject));
134
135 if (!nsk_jvmti_resumeSync())
136 return;
137 }
138
139 /* ========================================================================== */
140
141 /** Agent library initialization. */
142 #ifdef STATIC_BUILD
143 JNIEXPORT jint JNICALL Agent_OnLoad_ma04t003a(JavaVM *jvm, char *options, void *reserved) {
144 return Agent_Initialize(jvm, options, reserved);
145 }
146 JNIEXPORT jint JNICALL Agent_OnAttach_ma04t003a(JavaVM *jvm, char *options, void *reserved) {
147 return Agent_Initialize(jvm, options, reserved);
148 }
149 JNIEXPORT jint JNI_OnLoad_ma04t003a(JavaVM *jvm, char *options, void *reserved) {
150 return JNI_VERSION_1_8;
151 }
152 #endif
153 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
154 jvmtiEnv* jvmti = NULL;
155 jvmtiEventCallbacks callbacks;
156 jvmtiCapabilities caps;
157
158 NSK_DISPLAY0("Agent_OnLoad\n");
159
160 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
161 return JNI_ERR;
162
163 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
164
165 if (!NSK_VERIFY((jvmti =
166 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
167 return JNI_ERR;
168
169 memset(&caps, 0, sizeof(caps));
170 caps.can_tag_objects = 1;
171 caps.can_generate_object_free_events = 1;
172 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
173 return JNI_ERR;
174 }
175
176 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
177 return JNI_ERR;
178
179 memset(&callbacks, 0, sizeof(callbacks));
180 callbacks.ObjectFree = &ObjectFree;
181 callbacks.VMDeath = &VMDeath;
182 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
183 return JNI_ERR;
184
185 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
186 jvmti, JVMTI_ENABLE, JVMTI_EVENT_OBJECT_FREE, NULL)))
187 return JNI_ERR;
188
189 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
190 jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, NULL)))
191 return JNI_ERR;
192
193 return JNI_OK;
194 }
195
196 /* ========================================================================== */
197
198 }