1 /*
2 * Copyright (c) 2007, 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 Periodically hotswap class(es) with a changed version in
25 asynchronous manner from specified number of JVMTI agents. The VM
26 works in default mode.
27 */
28 #include <jni.h>
29 #include <jvmti.h>
30 #include "agent_common.h"
31 #include <string.h>
32 #include "jni_tools.h"
33 #include "jvmti_tools.h"
34 #include "JVMTITools.h"
35
36 extern "C" {
37
38 #define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS103/hs103t002/MyThread"
39 #define SEARCH_NAME "nsk/jvmti/scenarios/hotswap/HS103/hs103t002/MyThread"
40 #define MAIN_CLASS "nsk/jvmti/scenarios/hotswap/HS103/hs103t002/hs103t002"
41
42 static jvmtiEnv * jvmti;
43 static jthread testAgentThread;
44
45 JNIEXPORT void JNICALL doRedefineInNativeThread(jvmtiEnv * jvmti,
46 JNIEnv * jni, void * arg) {
47 jclass cla;
48 int i = 0;
49 int redefineNumber = 0;
50 char fileName[512];
51
52 jclass testClass;
53
54 jmethodID setRedefinitionDone;
55 jmethodID setRedefinitionFailed;
56
57 testClass = jni->FindClass(MAIN_CLASS);
58
59 if (!NSK_JNI_VERIFY(jni, (
60 setRedefinitionFailed = NSK_CPP_STUB4(GetStaticMethodID, jni,
61 testClass, "setRedefinitionFailed", "()V")) != NULL))
62 {
63 NSK_CPP_STUB2(FatalError, jni,
64 "TEST FAILED: while getting setRedefinitionFailed()\n");
65 }
66
67 if (!NSK_JNI_VERIFY(jni, (
68 setRedefinitionDone = NSK_CPP_STUB4(GetStaticMethodID, jni,
69 testClass, "setRedefinitionDone", "()V")) != NULL))
70 {
71 NSK_CPP_STUB2(FatalError, jni,
72 "TEST FAILED: while getting setRedefinitionDone()\n");
73 }
74
75 nsk_printf("doRedefineInNativeThread\n");
76 cla = jni->FindClass(SEARCH_NAME);
77 nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, sizeof(fileName)/sizeof(char));
78 for(i = 0; i < 30; i++) {
79 nsk_printf(" Inside the redefine method..\n");
80 if ( nsk_jvmti_redefineClass(jvmti, cla,fileName) == NSK_TRUE) {
81 nsk_printf("\nMyClass :: Successfully redefined..\n");
82 } else {
83 nsk_printf("\nMyClass :: Failed to redefine ..\n");
84
85 if (!NSK_JNI_VERIFY_VOID(jni, NSK_CPP_STUB3(CallStaticVoidMethod, jni,
86 testClass, setRedefinitionFailed)))
87 {
88 NSK_CPP_STUB2(FatalError, jni,
89 "TEST FAILED: while calling setRedefinitionFailed()\n");
90 }
91 }
92 }
93
94 if (!NSK_JNI_VERIFY_VOID(jni, NSK_CPP_STUB3(CallStaticVoidMethod, jni,
95 testClass, setRedefinitionDone)))
96 {
97 NSK_CPP_STUB2(FatalError, jni,
98 "TEST FAILED: while calling setRedefinitionDone()\n");
99 }
100
101 nsk_printf(" All 30 redefinitions are done..\n");
102 }
103
104
105 #ifdef STATIC_BUILD
106 JNIEXPORT jint JNICALL Agent_OnLoad_hs103t002(JavaVM *jvm, char *options, void *reserved) {
107 return Agent_Initialize(jvm, options, reserved);
108 }
109 JNIEXPORT jint JNICALL Agent_OnAttach_hs103t002(JavaVM *jvm, char *options, void *reserved) {
110 return Agent_Initialize(jvm, options, reserved);
111 }
112 JNIEXPORT jint JNI_OnLoad_hs103t002(JavaVM *jvm, char *options, void *reserved) {
113 return JNI_VERSION_1_8;
114 }
115 #endif
116
117 jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
118 jint rc;
119
120 nsk_printf("Agent:: VM.. Started..\n");
121
122 rc = vm->GetEnv((void **)&jvmti, JVMTI_VERSION_1_1);
123 if (rc != JNI_OK ) {
124 nsk_printf("Agent:: Could not load JVMTI interface \n");
125 return JNI_ERR;
126 } else {
127 jvmtiCapabilities caps;
128 if (nsk_jvmti_parseOptions(options) == NSK_FALSE ) {
129 nsk_printf("# error agent Failed to parse options \n");
130 return JNI_ERR;
131 }
132 memset(&caps, 0, sizeof(caps));
133 caps.can_redefine_classes = 1;
134 jvmti->AddCapabilities(&caps);
135 }
136 return JNI_OK;
137 }
138
139 JNIEXPORT jboolean JNICALL
140 Java_nsk_jvmti_scenarios_hotswap_HS103_hs103t002_hs103t002_startAgentThread(JNIEnv * jni, jclass cls) {
141 jvmtiError err ;
142 jthread thread;
143 jclass clas;
144 jmethodID method;
145 const char * threadName = "Agent Thread";
146 jobject name;
147
148 nsk_printf("hs103t002_startAgentThread\n");
149
150 name = jni->NewStringUTF(threadName);
151 clas = jni->FindClass("java/lang/Thread");
152
153 if (!NSK_JNI_VERIFY(jni, (method = NSK_CPP_STUB4(GetMethodID,
154 jni, clas, "<init>","(Ljava/lang/String;)V")) != NULL)) {
155 NSK_CPP_STUB2(FatalError, jni,
156 "failed to get ID for the java method\n");
157 }
158
159 thread = (jthread) jni->NewObject(clas,method,name);
160 testAgentThread = jni->NewGlobalRef(thread);
161 err = JVMTI_ERROR_NONE;
162 err = jvmti->RunAgentThread(testAgentThread, &doRedefineInNativeThread, NULL,
163 JVMTI_THREAD_NORM_PRIORITY);
164 if (err == JVMTI_ERROR_INVALID_PRIORITY) {
165 nsk_printf(" JVMTI_ERROR_INVALID_PRIORITY ..\n");
166 return JNI_ERR;
167 } else if ( err == JVMTI_ERROR_INVALID_THREAD) {
168 nsk_printf(" JVMTI_ERROR_INVALID_THREAD ..\n");
169 return JNI_ERR;
170 } else if (err == JVMTI_ERROR_NULL_POINTER) {
171 nsk_printf(" JVMTI_ERROR_NULL_POINTER ..\n");
172 return JNI_ERR;
173 } else {
174 nsk_printf(" Agent Thread Created.. \n");
175 }
176 return JNI_OK;
177 }
178
179 }