1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
/*
* Copyright (c) 2004, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <string.h>
#include <jvmti.h>
#include "agent_common.hpp"
#include "nsk_tools.hpp"
#include "jni_tools.hpp"
#include "JVMTITools.hpp"
#include "jvmti_tools.hpp"
extern "C" {
#define EXP_OBJ_NUMBER 1
static JNIEnv *jni = nullptr;
static jvmtiEnv *jvmti = nullptr;
static jvmtiEventCallbacks callbacks;
static jvmtiCapabilities caps;
static volatile int obj_free = 0;
static volatile long obj_count = 0;
static jlong timeout = 0;
static int user_data = 0;
static const char* DEBUGEE_SIGNATURE = "Lnsk/jvmti/scenarios/allocation/AP03/ap03t001;";
static const jlong DEBUGEE_CLASS_TAG = (jlong)1024;
void JNICALL
ObjectFree(jvmtiEnv *jvmti_env, jlong tag) {
NSK_COMPLAIN1("Received unexpected ObjectFree event for an object with tag %ld\n\n", (long)tag);
nsk_jvmti_setFailStatus();
obj_free++;
}
jvmtiIterationControl JNICALL
heapObjectCallback(jlong class_tag,
jlong size,
jlong* tag_ptr,
void* user_data) {
if (class_tag == DEBUGEE_CLASS_TAG) {
obj_count++;
}
return JVMTI_ITERATION_CONTINUE;
}
jvmtiIterationControl JNICALL
objectReferenceCallback(jvmtiObjectReferenceKind reference_kind,
jlong class_tag,
jlong size,
jlong* tag_ptr,
jlong referrer_tag,
jint referrer_index,
void* user_data) {
if (class_tag == DEBUGEE_CLASS_TAG && *tag_ptr != 0) {
obj_count++;
}
return JVMTI_ITERATION_CONTINUE;
}
/************************/
JNIEXPORT void JNICALL
Java_nsk_jvmti_scenarios_allocation_AP03_ap03t001_setTag(JNIEnv* jni, jobject obj, jlong tag) {
if (!NSK_JVMTI_VERIFY(jvmti->SetTag(obj, tag))) {
nsk_jvmti_setFailStatus();
}
}
static void JNICALL
agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
jclass debugeeClass = nullptr;
NSK_DISPLAY0("Wait for debugee start\n\n");
if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
return;
do {
jobject catcher;
jfieldID fid;
NSK_DISPLAY1("Find debugee class: %s\n", DEBUGEE_SIGNATURE);
debugeeClass = nsk_jvmti_classBySignature(DEBUGEE_SIGNATURE);
if (debugeeClass == nullptr) {
nsk_jvmti_setFailStatus();
break;
}
NSK_DISPLAY0("Set tag for debugee class\n\n");
if (!NSK_JVMTI_VERIFY(jvmti->SetTag(debugeeClass, DEBUGEE_CLASS_TAG))) {
nsk_jvmti_setFailStatus();
break;
}
NSK_DISPLAY0("Calling IterateOverInstancesOfClass with filter JVMTI_HEAP_OBJECT_TAGGED\n");
obj_count = 0;
if (!NSK_JVMTI_VERIFY(jvmti->IterateOverInstancesOfClass(debugeeClass,
JVMTI_HEAP_OBJECT_TAGGED,
heapObjectCallback,
&user_data))) {
nsk_jvmti_setFailStatus();
break;
}
if (obj_count != EXP_OBJ_NUMBER) {
nsk_jvmti_setFailStatus();
NSK_COMPLAIN2(
"IterateOverInstancesOfClass found unexpected number of objects: %d\n"
"\texpected number: %d\n\n",
obj_count, EXP_OBJ_NUMBER);
} else {
NSK_DISPLAY1("Number of objects IterateOverInstancesOfClass has found: %d\n\n", obj_count);
}
NSK_DISPLAY0("Calling IterateOverHeap with filter JVMTI_HEAP_OBJECT_TAGGED\n");
obj_count = 0;
if (!NSK_JVMTI_VERIFY(
jvmti->IterateOverHeap(JVMTI_HEAP_OBJECT_TAGGED, heapObjectCallback, &user_data))) {
nsk_jvmti_setFailStatus();
break;
}
if (obj_count != EXP_OBJ_NUMBER) {
nsk_jvmti_setFailStatus();
NSK_COMPLAIN2(
"IterateOverHeap found unexpected number of objects: %d\n"
"\texpected number: %d\n\n",
obj_count, EXP_OBJ_NUMBER);
} else {
NSK_DISPLAY1("Number of objects IterateOverHeap has found: %d\n\n", obj_count);
}
if (!NSK_JNI_VERIFY(jni, (fid =
jni->GetStaticFieldID(debugeeClass, "catcher", DEBUGEE_SIGNATURE)) != nullptr)) {
nsk_jvmti_setFailStatus();
break;
}
if (!NSK_JNI_VERIFY(jni, (catcher =
jni->GetStaticObjectField(debugeeClass, fid)) != nullptr)) {
NSK_COMPLAIN0("GetStaticObjectField returned null for 'catcher' field value\n\n");
nsk_jvmti_setFailStatus();
break;
}
NSK_DISPLAY0("Calling IterateOverObjectsReachableFromObject\n");
obj_count = 0;
if (!NSK_JVMTI_VERIFY(jvmti->IterateOverObjectsReachableFromObject(catcher,
objectReferenceCallback,
&user_data))) {
nsk_jvmti_setFailStatus();
break;
}
if (obj_count != EXP_OBJ_NUMBER) {
nsk_jvmti_setFailStatus();
NSK_COMPLAIN2(
"IterateOverObjectsReachableFromObject found unexpected number of objects: %d\n"
"\texpected number: %d\n\n",
obj_count, EXP_OBJ_NUMBER);
} else {
NSK_DISPLAY1("Number of objects IterateOverObjectsReachableFromObject has found: %d\n\n", obj_count);
}
} while (0);
NSK_DISPLAY0("Let debugee to finish\n");
if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
return;
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_ap03t001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_ap03t001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_ap03t001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
/* init framework and parse options */
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
return JNI_ERR;
/* create JVMTI environment */
if (!NSK_VERIFY((jvmti =
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != nullptr))
return JNI_ERR;
memset(&caps, 0, sizeof(jvmtiCapabilities));
caps.can_generate_object_free_events = 1;
caps.can_tag_objects = 1;
if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
return JNI_ERR;
if (!caps.can_generate_object_free_events)
NSK_DISPLAY0("Warning: generation of object free events is not implemented\n");
if (!caps.can_tag_objects)
NSK_DISPLAY0("Warning: tagging objects is not implemented\n");
/* set event callback */
NSK_DISPLAY0("setting event callbacks ...\n");
(void) memset(&callbacks, 0, sizeof(callbacks));
callbacks.ObjectFree = &ObjectFree;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
return JNI_ERR;
NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE,
JVMTI_EVENT_OBJECT_FREE,
nullptr)))
return JNI_ERR;
NSK_DISPLAY0("enabling the events done\n\n");
if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, nullptr)))
return JNI_ERR;
NSK_DISPLAY0("agentProc has been set\n\n");
return JNI_OK;
}
}
|
