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(NSK_CPP_STUB5(GetMethodName,
58 jvmti_env, method, &name, &signature, NULL))) {
59 nsk_jvmti_setFailStatus();
60 return;
61 }
62 NSK_DISPLAY3("CompiledMethodLoad event: %s%s (0x%p)\n",
63 name, signature, code_addr);
64 if (name != NULL)
65 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
66 if (signature != NULL)
67 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
68 }
69
70 static void JNICALL
71 CompiledMethodUnload(jvmtiEnv *jvmti_env, jmethodID method,
72 const void* code_addr) {
73 char *name = NULL;
74 char *sig = NULL;
75 jvmtiError err;
76 CompiledMethodUnloadEventsCount++;
77
78 NSK_DISPLAY0("CompiledMethodUnload event received\n");
79 // Check for the case that the class has been unloaded
80 err = jvmti_env->GetMethodName(method, &name, &sig, NULL);
81 if (err == JVMTI_ERROR_NONE) {
82 NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
83 name, sig, code_addr);
84 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
85 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)sig);
86 }
87 }
88
89 /* ========================================================================== */
90
91 /** Agent algorithm. */
92 static void JNICALL
93 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
94
95 if (!nsk_jvmti_waitForSync(timeout))
96 return;
97
98 NSK_DISPLAY1("CompiledMethodLoad events received: %d\n",
99 CompiledMethodLoadEventsCount);
100 if (CompiledMethodLoadEventsCount == 0) {
101 NSK_DISPLAY0("# WARNING: no CompiledMethodLoad events\n");
102 NSK_DISPLAY0("# (VM might not compile any methods at all)\n");
103 }
104
105 NSK_DISPLAY1("CompiledMethodUnload events received: %d\n",
106 CompiledMethodUnloadEventsCount);
107 if (CompiledMethodUnloadEventsCount == 0) {
108 NSK_DISPLAY0("# WARNING: no CompiledMethodUnload events\n");
109 NSK_DISPLAY0("# (VM might not compile any methods at all)\n");
110 }
111
112 if (!nsk_jvmti_resumeSync())
113 return;
114 }
115
116 /* ========================================================================== */
117
118 /** Agent library initialization. */
119 #ifdef STATIC_BUILD
120 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t006(JavaVM *jvm, char *options, void *reserved) {
121 return Agent_Initialize(jvm, options, reserved);
122 }
123 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t006(JavaVM *jvm, char *options, void *reserved) {
124 return Agent_Initialize(jvm, options, reserved);
125 }
126 JNIEXPORT jint JNI_OnLoad_ma10t006(JavaVM *jvm, char *options, void *reserved) {
127 return JNI_VERSION_1_8;
128 }
129 #endif
130 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
131 jvmtiEnv* jvmti = NULL;
132 jvmtiCapabilities caps;
133 jvmtiEventCallbacks callbacks;
134
135 NSK_DISPLAY0("Agent_OnLoad\n");
136
137 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
138 return JNI_ERR;
139
140 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
141
142 if (!NSK_VERIFY((jvmti =
143 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
144 return JNI_ERR;
145
146 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
147 return JNI_ERR;
148
149 memset(&caps, 0, sizeof(caps));
150 caps.can_generate_compiled_method_load_events = 1;
151 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
152 return JNI_ERR;
153 }
154
155 memset(&callbacks, 0, sizeof(callbacks));
156 callbacks.CompiledMethodLoad = &CompiledMethodLoad;
157 callbacks.CompiledMethodUnload = &CompiledMethodUnload;
158 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
159 return JNI_ERR;
160
161 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
162 jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, NULL)))
163 return JNI_ERR;
164 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
165 jvmti, JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_UNLOAD, NULL)))
166 return JNI_ERR;
167
168 return JNI_OK;
169 }
170
171 /* ========================================================================== */
172
173 }