1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <stdio.h>
18
19 #include <mutex>
20 #include <vector>
21
22 #include "android-base/macros.h"
23 #include "android-base/stringprintf.h"
24
25 #include "jni.h"
26 #include "jvmti.h"
27
28 // Test infrastructure
29 #include "jni_helper.h"
30 #include "jvmti_helper.h"
31 #include "scoped_local_ref.h"
32 #include "scoped_utf_chars.h"
33 #include "test_env.h"
34
35 namespace art {
36 namespace Test912ArtClasses {
37
38 static void EnableEvents(JNIEnv* env,
39 jboolean enable,
40 decltype(jvmtiEventCallbacks().ClassLoad) class_load,
41 decltype(jvmtiEventCallbacks().ClassPrepare) class_prepare) {
42 if (enable == JNI_FALSE) {
43 jvmtiError ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
44 JVMTI_EVENT_CLASS_LOAD,
45 nullptr);
46 if (JvmtiErrorToException(env, jvmti_env, ret)) {
47 return;
48 }
49 ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
50 JVMTI_EVENT_CLASS_PREPARE,
51 nullptr);
52 JvmtiErrorToException(env, jvmti_env, ret);
53 return;
54 }
55
56 jvmtiEventCallbacks callbacks;
57 memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
58 callbacks.ClassLoad = class_load;
59 callbacks.ClassPrepare = class_prepare;
60 jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
61 if (JvmtiErrorToException(env, jvmti_env, ret)) {
62 return;
63 }
64
65 ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
66 JVMTI_EVENT_CLASS_LOAD,
67 nullptr);
68 if (JvmtiErrorToException(env, jvmti_env, ret)) {
69 return;
70 }
71 ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
72 JVMTI_EVENT_CLASS_PREPARE,
73 nullptr);
74 JvmtiErrorToException(env, jvmti_env, ret);
75 }
76
77 struct ClassLoadSeen {
ClassLoadSeenCallbackart::Test912ArtClasses::ClassLoadSeen78 static void JNICALL ClassLoadSeenCallback(jvmtiEnv* jenv ATTRIBUTE_UNUSED,
79 JNIEnv* jni_env ATTRIBUTE_UNUSED,
80 jthread thread ATTRIBUTE_UNUSED,
81 jclass klass ATTRIBUTE_UNUSED) {
82 saw_event = true;
83 }
84
85 static bool saw_event;
86 };
87 bool ClassLoadSeen::saw_event = false;
88
Java_art_Test912Art_enableClassLoadSeenEvents(JNIEnv * env,jclass Main_klass ATTRIBUTE_UNUSED,jboolean b)89 extern "C" JNIEXPORT void JNICALL Java_art_Test912Art_enableClassLoadSeenEvents(
90 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jboolean b) {
91 EnableEvents(env, b, ClassLoadSeen::ClassLoadSeenCallback, nullptr);
92 }
93
Java_art_Test912Art_hadLoadEvent(JNIEnv * env ATTRIBUTE_UNUSED,jclass Main_klass ATTRIBUTE_UNUSED)94 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test912Art_hadLoadEvent(
95 JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED) {
96 return ClassLoadSeen::saw_event ? JNI_TRUE : JNI_FALSE;
97 }
98
Java_art_Test912Art_isLoadedClass(JNIEnv * env,jclass Main_klass ATTRIBUTE_UNUSED,jstring class_name)99 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test912Art_isLoadedClass(
100 JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jstring class_name) {
101 ScopedUtfChars name(env, class_name);
102
103 jint class_count;
104 jclass* classes;
105 jvmtiError res = jvmti_env->GetLoadedClasses(&class_count, &classes);
106 if (JvmtiErrorToException(env, jvmti_env, res)) {
107 return JNI_FALSE;
108 }
109
110 bool found = false;
111 for (jint i = 0; !found && i < class_count; ++i) {
112 char* sig;
113 jvmtiError res2 = jvmti_env->GetClassSignature(classes[i], &sig, nullptr);
114 if (JvmtiErrorToException(env, jvmti_env, res2)) {
115 return JNI_FALSE;
116 }
117
118 found = strcmp(name.c_str(), sig) == 0;
119
120 CheckJvmtiError(jvmti_env, jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(sig)));
121 }
122
123 CheckJvmtiError(jvmti_env, jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(classes)));
124
125 return found;
126 }
127
128 // We use the implementations from runtime_state.cc.
129
130 extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitCompiled(JNIEnv* env,
131 jclass,
132 jclass cls,
133 jstring method_name);
134 extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasJit(JNIEnv*, jclass);
135
Java_art_Test912Art_ensureJitCompiled(JNIEnv * env,jclass klass,jclass test_class,jstring name)136 extern "C" JNIEXPORT void JNICALL Java_art_Test912Art_ensureJitCompiled(
137 JNIEnv* env, jclass klass, jclass test_class, jstring name) {
138 Java_Main_ensureJitCompiled(env, klass, test_class, name);
139 }
140
Java_art_Test912Art_hasJit(JNIEnv * env,jclass klass)141 extern "C" JNIEXPORT jboolean JNICALL Java_art_Test912Art_hasJit(JNIEnv* env, jclass klass) {
142 return Java_Main_hasJit(env, klass);
143 }
144
145 } // namespace Test912ArtClasses
146 } // namespace art
147