1 /*
2 * Copyright (c) 2003, 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 <string.h>
26 #include <jvmti.h>
27 #include "agent_common.h"
28
29 #include "nsk_tools.h"
30 #include "JVMTITools.h"
31 #include "jvmti_tools.h"
32
33 extern "C" {
34
35 #define STATUS_FAILED 2
36 #define PASSED 0
37
38 static volatile jint result = PASSED;
39 static volatile int compunload = 0;
40 static volatile int class_unloaded = 0;
41 static jvmtiEnv *jvmti = NULL;
42 static jvmtiEventCallbacks callbacks;
43 static jvmtiCapabilities caps;
44
45 /** callback functions **/
46 void JNICALL
47 VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) {
48 NSK_DISPLAY0("VMInit event received\n\n");
49
50 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GenerateEvents,
51 jvmti_env, JVMTI_EVENT_COMPILED_METHOD_LOAD))) {
52 NSK_COMPLAIN0("TEST FAILED: unable to generate events to represent the current state of the VM\n");
53 result = STATUS_FAILED;
54 }
55 }
56
57 void JNICALL
58 CompiledMethodLoad(jvmtiEnv *jvmti_env, jmethodID method, jint code_size,
59 const void* code_addr, jint map_length, const jvmtiAddrLocationMap* map,
60 const void* compile_info) {
61 char *name;
62 char *sig;
63 char *generic;
64
65 NSK_DISPLAY0("CompiledMethodLoad event received for:\n");
66
67 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
68 jvmti_env, method, &name, &sig, &generic))) {
69 result = STATUS_FAILED;
70 NSK_COMPLAIN0("TEST FAILURE: unable to obtain method info\n\n");
71 return;
72 }
73 NSK_DISPLAY4("\tmethod: name=\"%s\" signature=\"%s\"\n\tcompiled code size=%d\n\tnumber of address location map entries=%d\n\n",
74 name, sig, code_size, map_length);
75 }
76
77 void JNICALL
78 CompiledMethodUnload(jvmtiEnv *jvmti_env, jmethodID method,
79 const void* code_addr) {
80 char *name;
81 char *sig;
82 jvmtiPhase phase;
83 jvmtiError err;
84
85 compunload++;
86
87 /* jmethodID: Identifies a Java programming language method, initializer, or constructor.
88 * jmethodIDs returned by JVM TI functions and events may be safely stored. However, if
89 * the class is unloaded, they become invalid and must not be used. */
90
91 NSK_DISPLAY0("CompiledMethodUnload event received\n");
92 // Check for the case that the class has been unloaded
93 err = jvmti_env->GetMethodName(method, &name, &sig, NULL);
94 if (err == JVMTI_ERROR_NONE) {
95 NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
96 name, sig, code_addr);
97 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
98 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)sig);
99 } else {
100 // The class metadata has been completely unloaded so the name is not available.
101 NSK_DISPLAY0("for: \tmethod: name=<not available>\n");
102 }
103
104 // Count unloaded events
105 class_unloaded++;
106
107 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetPhase,
108 jvmti_env, &phase))) {
109 result = STATUS_FAILED;
110 NSK_COMPLAIN0("TEST FAILURE: unable to obtain phase of the VM execution\n");
111 return;
112 }
113
114 if (phase != JVMTI_PHASE_LIVE) {
115 result = STATUS_FAILED;
116 NSK_COMPLAIN1("TEST FAILED: CompiledMethodUnload event received during non-live phase %s\n",
117 TranslatePhase(phase));
118 }
119 else
120 NSK_DISPLAY0("CHECK PASSED: CompiledMethodUnload event received during the live phase as expected\n\n");
121 }
122 /************************/
123
124 JNIEXPORT jint JNICALL
125 Java_nsk_jvmti_CompiledMethodUnload_compmethunload001_check(
126 JNIEnv *env, jobject obj) {
127 if (!caps.can_generate_compiled_method_load_events)
128 return PASSED;
129
130 if (compunload == 0)
131 NSK_DISPLAY0("Warning: no CompiledMethodUnload events\n\tthe test has no results\n");
132
133 return result;
134 }
135
136 JNIEXPORT jint JNICALL
137 Java_nsk_jvmti_CompiledMethodUnload_compmethunload001_unloaded(
138 JNIEnv *env, jobject obj) {
139 if (!caps.can_generate_compiled_method_load_events)
140 return 1;
141
142 return class_unloaded;
143 }
144
145 #ifdef STATIC_BUILD
146 JNIEXPORT jint JNICALL Agent_OnLoad_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
147 return Agent_Initialize(jvm, options, reserved);
148 }
149 JNIEXPORT jint JNICALL Agent_OnAttach_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
150 return Agent_Initialize(jvm, options, reserved);
151 }
152 JNIEXPORT jint JNI_OnLoad_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
153 return JNI_VERSION_1_8;
154 }
155 #endif
156 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
157 /* init framework and parse options */
158 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
159 return JNI_ERR;
160
161 /* create JVMTI environment */
162 if (!NSK_VERIFY((jvmti =
163 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
164 return JNI_ERR;
165
166 /* add capability to generate compiled method events */
167 memset(&caps, 0, sizeof(jvmtiCapabilities));
168 caps.can_generate_compiled_method_load_events = 1;
169 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,
170 jvmti, &caps)))
171 return JNI_ERR;
172
173 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,
174 jvmti, &caps)))
175 return JNI_ERR;
176
177 if (!caps.can_generate_compiled_method_load_events)
178 NSK_DISPLAY0("Warning: generation of compiled method events is not implemented\n");
179
180 /* set event callback */
181 NSK_DISPLAY0("setting event callbacks ...\n");
182 (void) memset(&callbacks, 0, sizeof(callbacks));
183 callbacks.VMInit = &VMInit;
184 callbacks.CompiledMethodLoad = &CompiledMethodLoad;
185 callbacks.CompiledMethodUnload = &CompiledMethodUnload;
186 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
187 jvmti, &callbacks, sizeof(callbacks))))
188 return JNI_ERR;
189
190 NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
191 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
192 jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, NULL)))
193 return JNI_ERR;
194 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
195 jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, NULL)))
196 return JNI_ERR;
197 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
198 jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_UNLOAD, NULL)))
199 return JNI_ERR;
200 NSK_DISPLAY0("enabling the events done\n\n");
201
202 return JNI_OK;
203 }
204
205 }