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 "jvmti.h"
27 #include "agent_common.h"
28 #include "jni_tools.h"
29 #include "jvmti_tools.h"
30
31 extern "C" {
32
33
34 /* ============================================================================= */
35
36 static jlong timeout = 0;
37 static jvmtiEnv *jvmti_2;
38
39 #define STATUS_FAIL 97
40 #define EVENTS_COUNT 2
41
42 static jvmtiEvent events[EVENTS_COUNT] = {
43 JVMTI_EVENT_VM_INIT,
44 JVMTI_EVENT_VM_DEATH
45 };
46
47 /* storage data */
48
49 #define STORAGE_DATA_SIZE 1024
50 #define STORAGE_DATA_CHAR 'X'
51
52 typedef struct _StorageStructure {
53 char data[STORAGE_DATA_SIZE];
54 } StorageStructure;
55
56 static StorageStructure storageData;
57 static StorageStructure* initialStorage = &storageData;
58
59
60 /* ============================================================================= */
61
62 /** Fill storage data with given char */
63 static void fillEnvStorage(StorageStructure* storage) {
64 NSK_DISPLAY2("Fill storage data with char %c for size: %d bytes\n",
65 (char)STORAGE_DATA_CHAR, (int)STORAGE_DATA_SIZE);
66 memset(storage->data, STORAGE_DATA_CHAR, STORAGE_DATA_SIZE);
67 NSK_DISPLAY0(" ... ok\n");
68 }
69
70 /**
71 * Check JVMTI environment local storage.
72 * @returns NSK_FALSE if any error occured.
73 */
74 static int checkEnvStorage(jvmtiEnv* jvmti, const char where[]) {
75 void* storage = NULL;
76
77 NSK_DISPLAY0("Calling GetEnvironmentLocalStorage():");
78 if (!NSK_JVMTI_VERIFY(
79 NSK_CPP_STUB2(GetEnvironmentLocalStorage, jvmti, &storage))) {
80 return NSK_FALSE;
81 }
82 NSK_DISPLAY1(" ... got storage: 0x%p\n", (void*)storage);
83
84 if (storage != NULL) {
85 NSK_COMPLAIN2("GetEnvironmentLocalStorage() returned NOT NULL storage in %s:\n"
86 "# storage pointer: 0x%p\n",
87 where, (void*)storage);
88 return NSK_FALSE;
89 }
90
91 return NSK_TRUE;
92 }
93
94 /* ============================================================================= */
95
96 /** Agent algorithm. */
97 static void JNICALL
98 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
99 NSK_DISPLAY0("Wait for debugee to become ready\n");
100 if (!nsk_jvmti_waitForSync(timeout))
101 return;
102
103 NSK_DISPLAY0("CASE #3: Check local storage in agent thread for second JVMTI env.\n");
104 if (!checkEnvStorage(jvmti, "agent thread")) {
105 nsk_jvmti_setFailStatus();
106 }
107
108 NSK_DISPLAY0("Let debugee to finish\n");
109 if (!nsk_jvmti_resumeSync())
110 return;
111 }
112
113 jthread getEnvThread(JNIEnv *env) {
114 jclass thrClass;
115 jmethodID cid;
116 jthread res;
117
118 thrClass = NSK_CPP_STUB2(FindClass, env, "java/lang/Thread");
119 cid = NSK_CPP_STUB4(GetMethodID, env, thrClass, "<init>", "()V");
120 res = NSK_CPP_STUB3(NewObject, env, thrClass, cid);
121 return res;
122 }
123
124 /* ============================================================================= */
125
126 /**
127 * Callback for VM_INIT event.
128 */
129 JNIEXPORT void JNICALL
130 callbackVMInit(jvmtiEnv* jvmti, JNIEnv* jni, jthread thread) {
131
132 NSK_DISPLAY0("CASE #2: Check local storage in VM_INIT callback for second JVMTI env.\n");
133 if (!checkEnvStorage(jvmti, "VM_INIT callback")) {
134 nsk_jvmti_setFailStatus();
135 }
136
137 NSK_DISPLAY0("Set agentProc for second JVMTI env.\n");
138 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
139 nsk_jvmti_setFailStatus();
140 }
141
142 /**
143 * Callback for VM_DEATH event.
144 */
145 JNIEXPORT void JNICALL
146 callbackVMDeath(jvmtiEnv* jvmti, JNIEnv* jni) {
147 int success = NSK_TRUE;
148
149 NSK_DISPLAY0("CASE #4: Check local storage in VM_DEATH callback for second JVMTI env.\n");
150 success = checkEnvStorage(jvmti, "VM_DEATH callback");
151
152 NSK_DISPLAY1("Disable events: %d events\n", EVENTS_COUNT);
153 if (!nsk_jvmti_enableEvents(JVMTI_DISABLE, EVENTS_COUNT, events, NULL)) {
154 success = NSK_FALSE;
155 } else {
156 NSK_DISPLAY0(" ... disabled\n");
157 }
158
159 if (!success) {
160 NSK_DISPLAY1("Exit with FAIL exit status: %d\n", STATUS_FAIL);
161 NSK_BEFORE_TRACE(exit(STATUS_FAIL));
162 }
163 }
164
165 /* ============================================================================= */
166
167 /** Agent library initialization. */
168 #ifdef STATIC_BUILD
169 JNIEXPORT jint JNICALL Agent_OnLoad_gf06t001(JavaVM *jvm, char *options, void *reserved) {
170 return Agent_Initialize(jvm, options, reserved);
171 }
172 JNIEXPORT jint JNICALL Agent_OnAttach_gf06t001(JavaVM *jvm, char *options, void *reserved) {
173 return Agent_Initialize(jvm, options, reserved);
174 }
175 JNIEXPORT jint JNI_OnLoad_gf06t001(JavaVM *jvm, char *options, void *reserved) {
176 return JNI_VERSION_1_8;
177 }
178 #endif
179 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
180 jint res;
181 jvmtiEnv* jvmti_1 = NULL;
182
183 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
184 return JNI_ERR;
185
186 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
187
188 NSK_DISPLAY0("Create first JVMTI env.\n");
189 res = jvm->GetEnv((void **) &jvmti_1, JVMTI_VERSION_1_1);
190 if (res < 0) {
191 NSK_COMPLAIN0("Wrong result of a valid call to GetEnv!\n");
192 return JNI_ERR;
193 }
194
195 NSK_DISPLAY1("Set local storage in JVM_OnLoad() for first JVMTI env: 0x%p\n", (void*)initialStorage);
196 if (!NSK_JVMTI_VERIFY(
197 NSK_CPP_STUB2(SetEnvironmentLocalStorage, jvmti_1, initialStorage))) {
198 return JNI_ERR;
199 }
200 NSK_DISPLAY0(" ... ok\n");
201
202 /* Create second environment */
203 if (!NSK_VERIFY((jvmti_2 =
204 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
205 return JNI_ERR;
206
207 /* Set callbacks for second environment */
208 {
209 jvmtiEventCallbacks eventCallbacks;
210
211 memset(&eventCallbacks, 0, sizeof(eventCallbacks));
212 eventCallbacks.VMInit = callbackVMInit;
213 eventCallbacks.VMDeath = callbackVMDeath;
214 if (!NSK_JVMTI_VERIFY(
215 NSK_CPP_STUB3(SetEventCallbacks, jvmti_2,
216 &eventCallbacks, sizeof(eventCallbacks)))) {
217 return JNI_ERR;
218 }
219
220 }
221
222
223 NSK_DISPLAY1("Prepare storage data at pointer: 0x%p\n", initialStorage);
224 fillEnvStorage(initialStorage);
225
226 NSK_DISPLAY0("CASE #1: Check local storage in JVM_OnLoad() for second JVMTI env.\n");
227 if (!checkEnvStorage(jvmti_2, "JVM_OnLoad()")) {
228 nsk_jvmti_setFailStatus();
229 }
230
231 NSK_DISPLAY1("Enable events: %d events\n", EVENTS_COUNT);
232 if (nsk_jvmti_enableEvents(JVMTI_ENABLE, EVENTS_COUNT, events, NULL)) {
233 NSK_DISPLAY0(" ... enabled\n");
234 }
235
236 return JNI_OK;
237 }
238
239 /* ============================================================================= */
240
241 }