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
77 CompiledMethodUnloadEventsCount++;
78
79 NSK_DISPLAY0("CompiledMethodUnload event received\n");
80 // Check for the case that the class has been unloaded
81 err = jvmti_env->GetMethodName(method, &name, &sig, NULL);
82 if (err == JVMTI_ERROR_NONE) {
83 NSK_DISPLAY3("for: \tmethod: name=\"%s\" signature=\"%s\"\n\tnative address=0x%p\n",
84 name, sig, code_addr);
85 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
86 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)sig);
87 }
88 }
89
90 /* ========================================================================== */
91
92 /** Agent algorithm. */
93 static void JNICALL
94 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
95
96 if (!nsk_jvmti_waitForSync(timeout))
97 return;
98
99 NSK_DISPLAY1("CompiledMethodLoad events received: %d\n",
100 CompiledMethodLoadEventsCount);
101 if (!NSK_VERIFY(CompiledMethodLoadEventsCount == 0))
102 nsk_jvmti_setFailStatus();
103
104 NSK_DISPLAY1("CompiledMethodUnload events received: %d\n",
105 CompiledMethodUnloadEventsCount);
106 if (!NSK_VERIFY(CompiledMethodUnloadEventsCount == 0))
107 nsk_jvmti_setFailStatus();
108
109 if (!nsk_jvmti_resumeSync())
110 return;
111 }
112
113 /* ========================================================================== */
114
115 /** Agent library initialization. */
116 #ifdef STATIC_BUILD
117 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t006a(JavaVM *jvm, char *options, void *reserved) {
118 return Agent_Initialize(jvm, options, reserved);
119 }
120 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t006a(JavaVM *jvm, char *options, void *reserved) {
121 return Agent_Initialize(jvm, options, reserved);
122 }
123 JNIEXPORT jint JNI_OnLoad_ma10t006a(JavaVM *jvm, char *options, void *reserved) {
124 return JNI_VERSION_1_8;
125 }
126 #endif
127 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
128 jvmtiEnv* jvmti = NULL;
129 jvmtiCapabilities caps;
130 jvmtiEventCallbacks callbacks;
131
132 NSK_DISPLAY0("Agent_OnLoad\n");
133
134 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
135 return JNI_ERR;
136
137 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
138
139 if (!NSK_VERIFY((jvmti =
140 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
141 return JNI_ERR;
142
143 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
144 return JNI_ERR;
145
146 memset(&caps, 0, sizeof(caps));
147 caps.can_generate_compiled_method_load_events = 1;
148 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
149 return JNI_ERR;
150 }
151
152 memset(&callbacks, 0, sizeof(callbacks));
153 callbacks.CompiledMethodLoad = &CompiledMethodLoad;
154 callbacks.CompiledMethodUnload = &CompiledMethodUnload;
155 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
156 return JNI_ERR;
157
158 return JNI_OK;
159 }
160
161 /* ========================================================================== */
162
163 }