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 "jni_tools.h"
27 #include "agent_common.h"
28 #include "jvmti_tools.h"
29
30 #define PASSED 0
31 #define STATUS_FAILED 2
32
33 extern "C" {
34
35 /* ========================================================================== */
36
37 /* scaffold objects */
38 static jlong timeout = 0;
39
40 /* event counts */
41 static int CompiledMethodLoadEventsCount = 0;
42 static int CompiledMethodUnloadEventsCount = 0;
43
44 /* ========================================================================== */
45
46 /** callback functions **/
47
48 static void JNICALL
49 CompiledMethodLoad(jvmtiEnv *jvmti_env, jmethodID method,
50 jint code_size, const void* code_addr, jint map_length,
51 const jvmtiAddrLocationMap* map, const void* compile_info) {
52 char *name = NULL;
53 char *signature = NULL;
54
55 CompiledMethodLoadEventsCount++;
56
57 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &signature, NULL))) {
58 nsk_jvmti_setFailStatus();
59 return;
60 }
61 NSK_DISPLAY3("CompiledMethodLoad event: %s%s (0x%p)\n",
62 name, signature, code_addr);
63 if (name != NULL)
64 jvmti_env->Deallocate((unsigned char*)name);
65 if (signature != NULL)
66 jvmti_env->Deallocate((unsigned char*)signature);
67 }
68
69 static void JNICALL
70 CompiledMethodUnload(jvmtiEnv *jvmti_env, jmethodID method,
71 const void* code_addr) {
72 char *name = NULL;
73 char *sig = NULL;
74 jvmtiError err;
75 CompiledMethodUnloadEventsCount++;
76
77 NSK_DISPLAY0("CompiledMethodUnload event received\n");
78 // Check for the case that the class has been unloaded
79 err = jvmti_env->GetMethodName(method, &name, &sig, NULL);
80 if (err == JVMTI_ERROR_NONE) {
81 NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
82 name, sig, code_addr);
83 jvmti_env->Deallocate((unsigned char*)name);
84 jvmti_env->Deallocate((unsigned char*)sig);
85 }
86 }
87
88 /* ========================================================================== */
89
90 /** Agent algorithm. */
91 static void JNICALL
92 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
93
94 if (!nsk_jvmti_waitForSync(timeout))
95 return;
96
97 NSK_DISPLAY1("CompiledMethodLoad events received: %d\n",
98 CompiledMethodLoadEventsCount);
99 if (CompiledMethodLoadEventsCount == 0) {
100 NSK_DISPLAY0("# WARNING: no CompiledMethodLoad events\n");
101 NSK_DISPLAY0("# (VM might not compile any methods at all)\n");
102 }
103
104 NSK_DISPLAY1("CompiledMethodUnload events received: %d\n",
105 CompiledMethodUnloadEventsCount);
106 if (CompiledMethodUnloadEventsCount == 0) {
107 NSK_DISPLAY0("# WARNING: no CompiledMethodUnload events\n");
108 NSK_DISPLAY0("# (VM might not compile any methods at all)\n");
109 }
110
111 if (!nsk_jvmti_resumeSync())
112 return;
113 }
114
115 /* ========================================================================== */
116
117 /** Agent library initialization. */
118 #ifdef STATIC_BUILD
119 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t006(JavaVM *jvm, char *options, void *reserved) {
120 return Agent_Initialize(jvm, options, reserved);
121 }
122 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t006(JavaVM *jvm, char *options, void *reserved) {
123 return Agent_Initialize(jvm, options, reserved);
124 }
125 JNIEXPORT jint JNI_OnLoad_ma10t006(JavaVM *jvm, char *options, void *reserved) {
126 return JNI_VERSION_1_8;
127 }
128 #endif
129 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
130 jvmtiEnv* jvmti = NULL;
131 jvmtiCapabilities caps;
132 jvmtiEventCallbacks callbacks;
133
134 NSK_DISPLAY0("Agent_OnLoad\n");
135
136 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
137 return JNI_ERR;
138
139 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
140
141 if (!NSK_VERIFY((jvmti =
142 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
143 return JNI_ERR;
144
145 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
146 return JNI_ERR;
147
148 memset(&caps, 0, sizeof(caps));
149 caps.can_generate_compiled_method_load_events = 1;
150 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
151 return JNI_ERR;
152 }
153
154 memset(&callbacks, 0, sizeof(callbacks));
155 callbacks.CompiledMethodLoad = &CompiledMethodLoad;
156 callbacks.CompiledMethodUnload = &CompiledMethodUnload;
157 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
158 return JNI_ERR;
159
160 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, NULL)))
161 return JNI_ERR;
162 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_UNLOAD, NULL)))
163 return JNI_ERR;
164
165 return JNI_OK;
166 }
167
168 /* ========================================================================== */
169
170 }