1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <string.h>
#include <jvmti.h>
#include "agent_common.hpp"
#include "nsk_tools.hpp"
#include "JVMTITools.hpp"
#include "jvmti_tools.hpp"
extern "C" {
#define STATUS_FAILED 2
#define PASSED 0
static volatile jint result = PASSED;
static volatile int compunload = 0;
static volatile int class_unloaded = 0;
static jvmtiEnv *jvmti = nullptr;
static jvmtiEventCallbacks callbacks;
static jvmtiCapabilities caps;
/** callback functions **/
void JNICALL
VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) {
NSK_DISPLAY0("VMInit event received\n\n");
if (!NSK_JVMTI_VERIFY(jvmti_env->GenerateEvents(JVMTI_EVENT_COMPILED_METHOD_LOAD))) {
NSK_COMPLAIN0("TEST FAILED: unable to generate events to represent the current state of the VM\n");
result = STATUS_FAILED;
}
}
void JNICALL
CompiledMethodLoad(jvmtiEnv *jvmti_env, jmethodID method, jint code_size,
const void* code_addr, jint map_length, const jvmtiAddrLocationMap* map,
const void* compile_info) {
char *name;
char *sig;
char *generic;
NSK_DISPLAY0("CompiledMethodLoad event received for:\n");
if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &sig, &generic))) {
result = STATUS_FAILED;
NSK_COMPLAIN0("TEST FAILURE: unable to obtain method info\n\n");
return;
}
NSK_DISPLAY4("\tmethod: name=\"%s\" signature=\"%s\"\n\tcompiled code size=%d\n\tnumber of address location map entries=%d\n\n",
name, sig, code_size, map_length);
}
void JNICALL
CompiledMethodUnload(jvmtiEnv *jvmti_env, jmethodID method,
const void* code_addr) {
char *name;
char *sig;
jvmtiPhase phase;
jvmtiError err;
compunload++;
/* jmethodID: Identifies a Java programming language method, initializer, or constructor.
* jmethodIDs returned by JVM TI functions and events may be safely stored. However, if
* the class is unloaded, they become invalid and must not be used. */
NSK_DISPLAY0("CompiledMethodUnload event received\n");
// Check for the case that the class has been unloaded
err = jvmti_env->GetMethodName(method, &name, &sig, nullptr);
if (err == JVMTI_ERROR_NONE) {
NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
name, sig, code_addr);
jvmti_env->Deallocate((unsigned char*)name);
jvmti_env->Deallocate((unsigned char*)sig);
} else {
// The class metadata has been completely unloaded so the name is not available.
NSK_DISPLAY0("for: \tmethod: name=<not available>\n");
}
// Count unloaded events
class_unloaded++;
if (!NSK_JVMTI_VERIFY(jvmti_env->GetPhase(&phase))) {
result = STATUS_FAILED;
NSK_COMPLAIN0("TEST FAILURE: unable to obtain phase of the VM execution\n");
return;
}
if (phase != JVMTI_PHASE_START && phase != JVMTI_PHASE_LIVE) {
result = STATUS_FAILED;
NSK_COMPLAIN1("TEST FAILED: CompiledMethodUnload event received during wrong phase %s\n",
TranslatePhase(phase));
}
else
NSK_DISPLAY0("CHECK PASSED: CompiledMethodUnload event received during the start or live phase as expected\n\n");
}
/************************/
JNIEXPORT jint JNICALL
Java_nsk_jvmti_CompiledMethodUnload_compmethunload001_check(
JNIEnv *env, jobject obj) {
if (!caps.can_generate_compiled_method_load_events)
return PASSED;
if (compunload == 0)
NSK_DISPLAY0("Warning: no CompiledMethodUnload events\n\tthe test has no results\n");
return result;
}
JNIEXPORT jint JNICALL
Java_nsk_jvmti_CompiledMethodUnload_compmethunload001_unloaded(
JNIEnv *env, jobject obj) {
if (!caps.can_generate_compiled_method_load_events)
return 1;
return class_unloaded;
}
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_compmethunload001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
/* init framework and parse options */
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
return JNI_ERR;
/* create JVMTI environment */
if (!NSK_VERIFY((jvmti =
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != nullptr))
return JNI_ERR;
/* add capability to generate compiled method events */
memset(&caps, 0, sizeof(jvmtiCapabilities));
caps.can_generate_compiled_method_load_events = 1;
if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
return JNI_ERR;
if (!caps.can_generate_compiled_method_load_events)
NSK_DISPLAY0("Warning: generation of compiled method events is not implemented\n");
/* set event callback */
NSK_DISPLAY0("setting event callbacks ...\n");
(void) memset(&callbacks, 0, sizeof(callbacks));
callbacks.VMInit = &VMInit;
callbacks.CompiledMethodLoad = &CompiledMethodLoad;
callbacks.CompiledMethodUnload = &CompiledMethodUnload;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
return JNI_ERR;
NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_INIT, nullptr)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, nullptr)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_UNLOAD, nullptr)))
return JNI_ERR;
NSK_DISPLAY0("enabling the events done\n\n");
return JNI_OK;
}
}
|
