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 = jni->GetStaticMethodID(testClass, "setRedefinitionFailed", "()V")) != NULL))
61 {
62 jni->FatalError("TEST FAILED: while getting setRedefinitionFailed()\n");
63 }
64
65 if (!NSK_JNI_VERIFY(jni, (
66 setRedefinitionDone = jni->GetStaticMethodID(testClass, "setRedefinitionDone", "()V")) != NULL))
67 {
68 jni->FatalError("TEST FAILED: while getting setRedefinitionDone()\n");
69 }
70
71 nsk_printf("doRedefineInNativeThread\n");
72 cla = jni->FindClass(SEARCH_NAME);
73 nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, sizeof(fileName)/sizeof(char));
74 for(i = 0; i < 30; i++) {
75 nsk_printf(" Inside the redefine method..\n");
76 if ( nsk_jvmti_redefineClass(jvmti, cla,fileName) == NSK_TRUE) {
77 nsk_printf("\nMyClass :: Successfully redefined..\n");
78 } else {
79 nsk_printf("\nMyClass :: Failed to redefine ..\n");
80
81 if (!NSK_JNI_VERIFY_VOID(jni, jni->CallStaticVoidMethod(testClass, setRedefinitionFailed)))
82 {
83 jni->FatalError("TEST FAILED: while calling setRedefinitionFailed()\n");
84 }
85 }
86 }
87
88 if (!NSK_JNI_VERIFY_VOID(jni, jni->CallStaticVoidMethod(testClass, setRedefinitionDone)))
89 {
90 jni->FatalError("TEST FAILED: while calling setRedefinitionDone()\n");
91 }
92
93 nsk_printf(" All 30 redefinitions are done..\n");
94 }
95
96
97 #ifdef STATIC_BUILD
98 JNIEXPORT jint JNICALL Agent_OnLoad_hs103t002(JavaVM *jvm, char *options, void *reserved) {
99 return Agent_Initialize(jvm, options, reserved);
100 }
101 JNIEXPORT jint JNICALL Agent_OnAttach_hs103t002(JavaVM *jvm, char *options, void *reserved) {
102 return Agent_Initialize(jvm, options, reserved);
103 }
104 JNIEXPORT jint JNI_OnLoad_hs103t002(JavaVM *jvm, char *options, void *reserved) {
105 return JNI_VERSION_1_8;
106 }
107 #endif
108
109 jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
110 jint rc;
111
112 nsk_printf("Agent:: VM.. Started..\n");
113
114 rc = vm->GetEnv((void **)&jvmti, JVMTI_VERSION_1_1);
115 if (rc != JNI_OK ) {
116 nsk_printf("Agent:: Could not load JVMTI interface \n");
117 return JNI_ERR;
118 } else {
119 jvmtiCapabilities caps;
120 if (nsk_jvmti_parseOptions(options) == NSK_FALSE ) {
121 nsk_printf("# error agent Failed to parse options \n");
122 return JNI_ERR;
123 }
124 memset(&caps, 0, sizeof(caps));
125 caps.can_redefine_classes = 1;
126 jvmti->AddCapabilities(&caps);
127 }
128 return JNI_OK;
129 }
130
131 JNIEXPORT jboolean JNICALL
132 Java_nsk_jvmti_scenarios_hotswap_HS103_hs103t002_hs103t002_startAgentThread(JNIEnv * jni, jclass cls) {
133 jvmtiError err ;
134 jthread thread;
135 jclass clas;
136 jmethodID method;
137 const char * threadName = "Agent Thread";
138 jobject name;
139
140 nsk_printf("hs103t002_startAgentThread\n");
141
142 name = jni->NewStringUTF(threadName);
143 clas = jni->FindClass("java/lang/Thread");
144
145 if (!NSK_JNI_VERIFY(jni, (method = jni->GetMethodID(clas, "<init>", "(Ljava/lang/String;)V")) != NULL)) {
146 jni->FatalError("failed to get ID for the java method\n");
147 }
148
149 thread = (jthread) jni->NewObject(clas,method,name);
150 testAgentThread = jni->NewGlobalRef(thread);
151 err = JVMTI_ERROR_NONE;
152 err = jvmti->RunAgentThread(testAgentThread, &doRedefineInNativeThread, NULL,
153 JVMTI_THREAD_NORM_PRIORITY);
154 if (err == JVMTI_ERROR_INVALID_PRIORITY) {
155 nsk_printf(" JVMTI_ERROR_INVALID_PRIORITY ..\n");
156 return JNI_ERR;
157 } else if ( err == JVMTI_ERROR_INVALID_THREAD) {
158 nsk_printf(" JVMTI_ERROR_INVALID_THREAD ..\n");
159 return JNI_ERR;
160 } else if (err == JVMTI_ERROR_NULL_POINTER) {
161 nsk_printf(" JVMTI_ERROR_NULL_POINTER ..\n");
162 return JNI_ERR;
163 } else {
164 nsk_printf(" Agent Thread Created.. \n");
165 }
166 return JNI_OK;
167 }
168
169 }