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 <stdio.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <jvmti.h>
28 #include "agent_common.h"
29
30 #include "nsk_tools.h"
31 #include "jni_tools.h"
32 #include "JVMTITools.h"
33 #include "jvmti_tools.h"
34
35 extern "C" {
36
37 #define PASSED 0
38 #define STATUS_FAILED 2
39
40 #define EXP_OBJ_FREE 2
41
42 static JNIEnv *jni = NULL;
43 static jvmtiEnv *jvmti = NULL;
44 static jvmtiEventCallbacks callbacks;
45 static jvmtiCapabilities caps;
46
47 static volatile int obj_free = 0;
48 static volatile long obj_count = 0;
49
50 static jlong timeout = 0;
51 static int user_data = 0;
52 static const char* DEBUGEE_SIGNATURE = "Lnsk/jvmti/scenarios/allocation/AP12/ap12t001;";
53 static const jlong DEBUGEE_CLASS_TAG = (jlong)1024;
54
55 void JNICALL
56 ObjectFree(jvmtiEnv *jvmti_env, jlong tag) {
57 NSK_DISPLAY1("ObjectFree event received for an object with tag %ld\n\n", (long)tag);
58 obj_free++;
59 }
60
61 void JNICALL
62 VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {
63
64 NSK_DISPLAY0("VMDeath event received\n");
65
66 if (obj_free != EXP_OBJ_FREE) {
67 NSK_COMPLAIN2(
68 "Received unexpected number of ObjectFree events: %d\n"
69 "\texpected number: %d\n",
70 obj_free, EXP_OBJ_FREE);
71 exit(95 + STATUS_FAILED);
72 }
73
74 exit(95 + PASSED);
75 }
76
77 /************************/
78
79 JNIEXPORT void JNICALL
80 Java_nsk_jvmti_scenarios_allocation_AP12_ap12t001_setTag( JNIEnv* jni, jobject obj, jlong tag) {
81
82 if (!NSK_JVMTI_VERIFY(jvmti->SetTag(obj, tag))) {
83 nsk_jvmti_setFailStatus();
84 }
85 }
86
87 static void JNICALL
88 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
89
90 jclass debugeeClass = NULL;
91
92 NSK_DISPLAY0("Wait for debugee start\n\n");
93 if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
94 return;
95
96 NSK_DISPLAY0("Let debugee to provoke GC\n");
97 if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
98 return;
99 if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
100 return;
101
102 NSK_DISPLAY0("Let debugee to finish\n");
103 if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
104 return;
105 }
106
107 #ifdef STATIC_BUILD
108 JNIEXPORT jint JNICALL Agent_OnLoad_ap12t001(JavaVM *jvm, char *options, void *reserved) {
109 return Agent_Initialize(jvm, options, reserved);
110 }
111 JNIEXPORT jint JNICALL Agent_OnAttach_ap12t001(JavaVM *jvm, char *options, void *reserved) {
112 return Agent_Initialize(jvm, options, reserved);
113 }
114 JNIEXPORT jint JNI_OnLoad_ap12t001(JavaVM *jvm, char *options, void *reserved) {
115 return JNI_VERSION_1_8;
116 }
117 #endif
118 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
119 /* init framework and parse options */
120 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
121 return JNI_ERR;
122
123 /* create JVMTI environment */
124 if (!NSK_VERIFY((jvmti =
125 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
126 return JNI_ERR;
127
128 memset(&caps, 0, sizeof(jvmtiCapabilities));
129 caps.can_generate_object_free_events = 1;
130 caps.can_tag_objects = 1;
131 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
132 return JNI_ERR;
133
134 if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
135 return JNI_ERR;
136
137 if (!caps.can_generate_object_free_events)
138 NSK_DISPLAY0("Warning: generation of object free events is not implemented\n");
139 if (!caps.can_tag_objects)
140 NSK_DISPLAY0("Warning: tagging objects is not implemented\n");
141
142 /* set event callback */
143 NSK_DISPLAY0("setting event callbacks ...\n");
144 (void) memset(&callbacks, 0, sizeof(callbacks));
145
146 callbacks.ObjectFree = &ObjectFree;
147 callbacks.VMDeath = &VMDeath;
148
149 if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
150 return JNI_ERR;
151
152 NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
153 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE,
154 JVMTI_EVENT_OBJECT_FREE,
155 NULL)))
156 return JNI_ERR;
157 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE,
158 JVMTI_EVENT_VM_DEATH,
159 NULL)))
160 return JNI_ERR;
161 NSK_DISPLAY0("enabling the events done\n\n");
162
163 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
164 return JNI_ERR;
165 NSK_DISPLAY0("agentProc has been set\n\n");
166
167 return JNI_OK;
168 }
169
170 }