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