jni_test.cc revision 1c83cbc4a817acbd7f9abb5b29a2d418a958e6a1 
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 <assert.h>
18#include <stdio.h>
19#include <pthread.h>
20#include <vector>
21
22#include "jni.h"
23
24#if defined(NDEBUG)
25#error test code compiled without NDEBUG
26#endif
27
28static JavaVM* jvm = NULL;
29
30extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *) {
31  assert(vm != NULL);
32  assert(jvm == NULL);
33  jvm = vm;
34  return JNI_VERSION_1_6;
35}
36
37static void* testFindClassOnAttachedNativeThread(void*) {
38  assert(jvm != NULL);
39
40  JNIEnv* env = NULL;
41  JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, NULL };
42  int attach_result = jvm->AttachCurrentThread(&env, &args);
43  assert(attach_result == 0);
44
45  jclass clazz = env->FindClass("Main");
46  assert(clazz != NULL);
47  assert(!env->ExceptionCheck());
48
49  jobjectArray array = env->NewObjectArray(0, clazz, NULL);
50  assert(array != NULL);
51  assert(!env->ExceptionCheck());
52
53  int detach_result = jvm->DetachCurrentThread();
54  assert(detach_result == 0);
55  return NULL;
56}
57
58// http://b/10994325
59extern "C" JNIEXPORT void JNICALL Java_Main_testFindClassOnAttachedNativeThread(JNIEnv*,
60                                                                                   jclass) {
61  pthread_t pthread;
62  int pthread_create_result = pthread_create(&pthread,
63                                             NULL,
64                                             testFindClassOnAttachedNativeThread,
65                                             NULL);
66  assert(pthread_create_result == 0);
67  int pthread_join_result = pthread_join(pthread, NULL);
68  assert(pthread_join_result == 0);
69}
70
71static void* testFindFieldOnAttachedNativeThread(void*) {
72  assert(jvm != NULL);
73
74  JNIEnv* env = NULL;
75  JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, NULL };
76  int attach_result = jvm->AttachCurrentThread(&env, &args);
77  assert(attach_result == 0);
78
79  jclass clazz = env->FindClass("Main");
80  assert(clazz != NULL);
81  assert(!env->ExceptionCheck());
82
83  jfieldID field = env->GetStaticFieldID(clazz, "testFindFieldOnAttachedNativeThreadField", "Z");
84  assert(field != NULL);
85  assert(!env->ExceptionCheck());
86
87  env->SetStaticBooleanField(clazz, field, JNI_TRUE);
88
89  int detach_result = jvm->DetachCurrentThread();
90  assert(detach_result == 0);
91  return NULL;
92}
93
94extern "C" JNIEXPORT void JNICALL Java_Main_testFindFieldOnAttachedNativeThreadNative(JNIEnv*,
95                                                                                         jclass) {
96  pthread_t pthread;
97  int pthread_create_result = pthread_create(&pthread,
98                                             NULL,
99                                             testFindFieldOnAttachedNativeThread,
100                                             NULL);
101  assert(pthread_create_result == 0);
102  int pthread_join_result = pthread_join(pthread, NULL);
103  assert(pthread_join_result == 0);
104}
105
106static void* testReflectFieldGetFromAttachedNativeThread(void*) {
107  assert(jvm != NULL);
108
109  JNIEnv* env = NULL;
110  JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, NULL };
111  int attach_result = jvm->AttachCurrentThread(&env, &args);
112  assert(attach_result == 0);
113
114  jclass clazz = env->FindClass("Main");
115  assert(clazz != NULL);
116  assert(!env->ExceptionCheck());
117
118  jclass class_clazz = env->FindClass("java/lang/Class");
119  assert(class_clazz != NULL);
120  assert(!env->ExceptionCheck());
121
122  jmethodID getFieldMetodId = env->GetMethodID(class_clazz, "getField",
123                                               "(Ljava/lang/String;)Ljava/lang/reflect/Field;");
124  assert(getFieldMetodId != NULL);
125  assert(!env->ExceptionCheck());
126
127  jstring field_name = env->NewStringUTF("testReflectFieldGetFromAttachedNativeThreadField");
128  assert(field_name != NULL);
129  assert(!env->ExceptionCheck());
130
131  jobject field = env->CallObjectMethod(clazz, getFieldMetodId, field_name);
132  assert(field != NULL);
133  assert(!env->ExceptionCheck());
134
135  jclass field_clazz = env->FindClass("java/lang/reflect/Field");
136  assert(field_clazz != NULL);
137  assert(!env->ExceptionCheck());
138
139  jmethodID getBooleanMetodId = env->GetMethodID(field_clazz, "getBoolean",
140                                                 "(Ljava/lang/Object;)Z");
141  assert(getBooleanMetodId != NULL);
142  assert(!env->ExceptionCheck());
143
144  jboolean value = env->CallBooleanMethod(field, getBooleanMetodId, /* ignored */ clazz);
145  assert(value == false);
146  assert(!env->ExceptionCheck());
147
148  int detach_result = jvm->DetachCurrentThread();
149  assert(detach_result == 0);
150  return NULL;
151}
152
153// http://b/15539150
154extern "C" JNIEXPORT void JNICALL Java_Main_testReflectFieldGetFromAttachedNativeThreadNative(
155    JNIEnv*, jclass) {
156  pthread_t pthread;
157  int pthread_create_result = pthread_create(&pthread,
158                                             NULL,
159                                             testReflectFieldGetFromAttachedNativeThread,
160                                             NULL);
161  assert(pthread_create_result == 0);
162  int pthread_join_result = pthread_join(pthread, NULL);
163  assert(pthread_join_result == 0);
164}
165
166
167// http://b/11243757
168extern "C" JNIEXPORT void JNICALL Java_Main_testCallStaticVoidMethodOnSubClassNative(JNIEnv* env,
169                                                                                        jclass) {
170  jclass super_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SuperClass");
171  assert(super_class != NULL);
172
173  jmethodID execute = env->GetStaticMethodID(super_class, "execute", "()V");
174  assert(execute != NULL);
175
176  jclass sub_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SubClass");
177  assert(sub_class != NULL);
178
179  env->CallStaticVoidMethod(sub_class, execute);
180}
181
182extern "C" JNIEXPORT jobject JNICALL Java_Main_testGetMirandaMethodNative(JNIEnv* env, jclass) {
183  jclass abstract_class = env->FindClass("Main$testGetMirandaMethod_MirandaAbstract");
184  assert(abstract_class != NULL);
185  jmethodID miranda_method = env->GetMethodID(abstract_class, "inInterface", "()Z");
186  assert(miranda_method != NULL);
187  return env->ToReflectedMethod(abstract_class, miranda_method, JNI_FALSE);
188}
189
190// https://code.google.com/p/android/issues/detail?id=63055
191extern "C" void JNICALL Java_Main_testZeroLengthByteBuffers(JNIEnv* env, jclass) {
192  std::vector<uint8_t> buffer(1);
193  jobject byte_buffer = env->NewDirectByteBuffer(&buffer[0], 0);
194  assert(byte_buffer != NULL);
195  assert(!env->ExceptionCheck());
196
197  assert(env->GetDirectBufferAddress(byte_buffer) == &buffer[0]);
198  assert(env->GetDirectBufferCapacity(byte_buffer) == 0);
199}
200
201constexpr size_t kByteReturnSize = 7;
202jbyte byte_returns[kByteReturnSize] = { 0, 1, 2, 127, -1, -2, -128 };
203
204extern "C" jbyte JNICALL Java_Main_byteMethod(JNIEnv* env, jclass klass, jbyte b1, jbyte b2,
205                                                    jbyte b3, jbyte b4, jbyte b5, jbyte b6,
206                                                    jbyte b7, jbyte b8, jbyte b9, jbyte b10) {
207  // We use b1 to drive the output.
208  assert(b2 == 2);
209  assert(b3 == -3);
210  assert(b4 == 4);
211  assert(b5 == -5);
212  assert(b6 == 6);
213  assert(b7 == -7);
214  assert(b8 == 8);
215  assert(b9 == -9);
216  assert(b10 == 10);
217
218  assert(0 <= b1);
219  assert(b1 < static_cast<jbyte>(kByteReturnSize));
220
221  return byte_returns[b1];
222}
223
224constexpr size_t kShortReturnSize = 9;
225jshort short_returns[kShortReturnSize] = { 0, 1, 2, 127, 32767, -1, -2, -128,
226    static_cast<jshort>(0x8000) };
227// The weird static_cast is because short int is only guaranteed down to -32767, not Java's -32768.
228
229extern "C" jshort JNICALL Java_Main_shortMethod(JNIEnv* env, jclass klass, jshort s1, jshort s2,
230                                                    jshort s3, jshort s4, jshort s5, jshort s6,
231                                                    jshort s7, jshort s8, jshort s9, jshort s10) {
232  // We use s1 to drive the output.
233  assert(s2 == 2);
234  assert(s3 == -3);
235  assert(s4 == 4);
236  assert(s5 == -5);
237  assert(s6 == 6);
238  assert(s7 == -7);
239  assert(s8 == 8);
240  assert(s9 == -9);
241  assert(s10 == 10);
242
243  assert(0 <= s1);
244  assert(s1 < static_cast<jshort>(kShortReturnSize));
245
246  return short_returns[s1];
247}
248
249extern "C" jboolean JNICALL Java_Main_booleanMethod(JNIEnv* env, jclass klass, jboolean b1,
250                                                       jboolean b2, jboolean b3, jboolean b4,
251                                                       jboolean b5, jboolean b6, jboolean b7,
252                                                       jboolean b8, jboolean b9, jboolean b10) {
253  // We use b1 to drive the output.
254  assert(b2 == JNI_TRUE);
255  assert(b3 == JNI_FALSE);
256  assert(b4 == JNI_TRUE);
257  assert(b5 == JNI_FALSE);
258  assert(b6 == JNI_TRUE);
259  assert(b7 == JNI_FALSE);
260  assert(b8 == JNI_TRUE);
261  assert(b9 == JNI_FALSE);
262  assert(b10 == JNI_TRUE);
263
264  assert(b1 == JNI_TRUE || b1 == JNI_FALSE);
265  return b1;
266}
267
268constexpr size_t kCharReturnSize = 8;
269jchar char_returns[kCharReturnSize] = { 0, 1, 2, 127, 255, 256, 15000, 34000 };
270
271extern "C" jchar JNICALL Java_Main_charMethod(JNIEnv* env, jclass klacc, jchar c1, jchar c2,
272                                                    jchar c3, jchar c4, jchar c5, jchar c6,
273                                                    jchar c7, jchar c8, jchar c9, jchar c10) {
274  // We use c1 to drive the output.
275  assert(c2 == 'a');
276  assert(c3 == 'b');
277  assert(c4 == 'c');
278  assert(c5 == '0');
279  assert(c6 == '1');
280  assert(c7 == '2');
281  assert(c8 == 1234);
282  assert(c9 == 2345);
283  assert(c10 == 3456);
284
285  assert(c1 < static_cast<jchar>(kCharReturnSize));
286
287  return char_returns[c1];
288}
289