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 <pthread.h>
18
19 #include <cstdio>
20 #include <iostream>
21 #include <vector>
22
23 #include <android-base/logging.h>
24
25 #include "art_method-inl.h"
26 #include "base/runtime_debug.h"
27 #include "jni.h"
28
29 namespace art {
30
31 static JavaVM* jvm = nullptr;
32
33 static jint Java_Main_intFastNativeMethod(JNIEnv*, jclass, jint a, jint b, jint c);
34 static jint Java_Main_intCriticalNativeMethod(jint a, jint b, jint c);
35
36 static JNINativeMethod sMainMethods[] = {
37 {"intFastNativeMethod", "(III)I", reinterpret_cast<void*>(Java_Main_intFastNativeMethod) },
38 {"intCriticalNativeMethod", "(III)I", reinterpret_cast<void*>(Java_Main_intCriticalNativeMethod) },
39 };
40
JNI_OnLoad(JavaVM * vm,void *)41 extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void*) {
42 CHECK(vm != nullptr);
43 CHECK(jvm == nullptr);
44 jvm = vm;
45 std::cout << "JNI_OnLoad called" << std::endl;
46
47 return JNI_VERSION_1_6;
48 }
49
JNI_OnUnload(JavaVM *,void *)50 extern "C" JNIEXPORT void JNI_OnUnload(JavaVM*, void*) {
51 // std::cout since LOG(INFO) adds extra stuff like pid.
52 std::cout << "JNI_OnUnload called" << std::endl;
53 // Clear jvm for CHECK in test 004-JniTest.
54 jvm = nullptr;
55 }
56
AttachHelper(void * arg)57 static void* AttachHelper(void* arg) {
58 CHECK(jvm != nullptr);
59
60 JNIEnv* env = nullptr;
61 JavaVMAttachArgs args = { JNI_VERSION_1_6, __FUNCTION__, nullptr };
62 int attach_result = jvm->AttachCurrentThread(&env, &args);
63 CHECK_EQ(attach_result, 0);
64
65 using Fn = void(*)(JNIEnv*);
66 Fn fn = reinterpret_cast<Fn>(arg);
67 fn(env);
68
69 int detach_result = jvm->DetachCurrentThread();
70 CHECK_EQ(detach_result, 0);
71 return nullptr;
72 }
73
PthreadHelper(void (* fn)(JNIEnv *))74 static void PthreadHelper(void (*fn)(JNIEnv*)) {
75 pthread_t pthread;
76 int pthread_create_result = pthread_create(&pthread, nullptr, AttachHelper,
77 reinterpret_cast<void*>(fn));
78 CHECK_EQ(pthread_create_result, 0);
79 int pthread_join_result = pthread_join(pthread, nullptr);
80 CHECK_EQ(pthread_join_result, 0);
81 }
82
testFindClassOnAttachedNativeThread(JNIEnv * env)83 static void testFindClassOnAttachedNativeThread(JNIEnv* env) {
84 jclass clazz = env->FindClass("Main");
85 CHECK(clazz != nullptr);
86 CHECK(!env->ExceptionCheck());
87
88 jobjectArray array = env->NewObjectArray(0, clazz, nullptr);
89 CHECK(array != nullptr);
90 CHECK(!env->ExceptionCheck());
91 }
92
Java_Main_testUTFRegion(JNIEnv * env,jclass,jstring null_str)93 extern "C" JNIEXPORT void JNICALL Java_Main_testUTFRegion(JNIEnv* env, jclass, jstring null_str) {
94 jstring foo_str = env->NewStringUTF("FOOBAR");
95 jstring emoji_str = env->NewStringUTF("SKI ⛷ SKI");
96 char buf[1024];
97 memset(buf, 'Y', sizeof(buf));
98 buf[1023] = '\0';
99
100 env->GetStringUTFRegion(foo_str, 3, 1, buf);
101 buf[1023] = '\0';
102 CHECK_EQ(strcmp("B", buf), 0) << buf;
103
104 // Null char on 0 len region
105 env->GetStringUTFRegion(foo_str, 3, 0, buf);
106 buf[1023] = '\0';
107 CHECK_EQ(strcmp("", buf), 0) << buf;
108
109 // No SEGV
110 env->GetStringUTFRegion(foo_str, 3, 0, nullptr);
111
112 env->GetStringUTFRegion(null_str, 1, 1, buf);
113 buf[1023] = '\0';
114 std::array<uint8_t, 3> nullbuf{ 0xc0, 0x80, 0x00 };
115 CHECK_EQ(memcmp(nullbuf.data(), buf, 3), 0);
116
117 env->GetStringUTFRegion(emoji_str, 1, 6, buf);
118 buf[1023] = '\0';
119 CHECK_EQ(strcmp("KI ⛷ S", buf), 0);
120 }
121
Java_Main_getFieldSubclass(JNIEnv * env,jclass,jobject f_obj,jclass sub)122 extern "C" JNIEXPORT jint JNICALL Java_Main_getFieldSubclass(JNIEnv* env,
123 jclass,
124 jobject f_obj,
125 jclass sub) {
126 jfieldID f = env->FromReflectedField(f_obj);
127 return env->GetStaticIntField(sub, f);
128 }
129
130 // http://b/10994325
Java_Main_testFindClassOnAttachedNativeThread(JNIEnv *,jclass)131 extern "C" JNIEXPORT void JNICALL Java_Main_testFindClassOnAttachedNativeThread(JNIEnv*, jclass) {
132 PthreadHelper(&testFindClassOnAttachedNativeThread);
133 }
134
testFindFieldOnAttachedNativeThread(JNIEnv * env)135 static void testFindFieldOnAttachedNativeThread(JNIEnv* env) {
136 jclass clazz = env->FindClass("Main");
137 CHECK(clazz != nullptr);
138 CHECK(!env->ExceptionCheck());
139
140 jfieldID field = env->GetStaticFieldID(clazz, "testFindFieldOnAttachedNativeThreadField", "Z");
141 CHECK(field != nullptr);
142 CHECK(!env->ExceptionCheck());
143
144 env->SetStaticBooleanField(clazz, field, JNI_TRUE);
145 }
146
Java_Main_testFindFieldOnAttachedNativeThreadNative(JNIEnv *,jclass)147 extern "C" JNIEXPORT void JNICALL Java_Main_testFindFieldOnAttachedNativeThreadNative(JNIEnv*,
148 jclass) {
149 PthreadHelper(&testFindFieldOnAttachedNativeThread);
150 }
151
testReflectFieldGetFromAttachedNativeThread(JNIEnv * env)152 static void testReflectFieldGetFromAttachedNativeThread(JNIEnv* env) {
153 jclass clazz = env->FindClass("Main");
154 CHECK(clazz != nullptr);
155 CHECK(!env->ExceptionCheck());
156
157 jclass class_clazz = env->FindClass("java/lang/Class");
158 CHECK(class_clazz != nullptr);
159 CHECK(!env->ExceptionCheck());
160
161 jmethodID getFieldMetodId = env->GetMethodID(class_clazz, "getField",
162 "(Ljava/lang/String;)Ljava/lang/reflect/Field;");
163 CHECK(getFieldMetodId != nullptr);
164 CHECK(!env->ExceptionCheck());
165
166 jstring field_name = env->NewStringUTF("testReflectFieldGetFromAttachedNativeThreadField");
167 CHECK(field_name != nullptr);
168 CHECK(!env->ExceptionCheck());
169
170 jobject field = env->CallObjectMethod(clazz, getFieldMetodId, field_name);
171 CHECK(field != nullptr);
172 CHECK(!env->ExceptionCheck());
173
174 jclass field_clazz = env->FindClass("java/lang/reflect/Field");
175 CHECK(field_clazz != nullptr);
176 CHECK(!env->ExceptionCheck());
177
178 jmethodID getBooleanMetodId = env->GetMethodID(field_clazz, "getBoolean",
179 "(Ljava/lang/Object;)Z");
180 CHECK(getBooleanMetodId != nullptr);
181 CHECK(!env->ExceptionCheck());
182
183 jboolean value = env->CallBooleanMethod(field, getBooleanMetodId, /* ignored */ clazz);
184 CHECK(value == false);
185 CHECK(!env->ExceptionCheck());
186 }
187
188 // http://b/15539150
Java_Main_testReflectFieldGetFromAttachedNativeThreadNative(JNIEnv *,jclass)189 extern "C" JNIEXPORT void JNICALL Java_Main_testReflectFieldGetFromAttachedNativeThreadNative(
190 JNIEnv*, jclass) {
191 PthreadHelper(&testReflectFieldGetFromAttachedNativeThread);
192 }
193
194
195 // http://b/11243757
Java_Main_testCallStaticVoidMethodOnSubClassNative(JNIEnv * env,jclass)196 extern "C" JNIEXPORT void JNICALL Java_Main_testCallStaticVoidMethodOnSubClassNative(JNIEnv* env,
197 jclass) {
198 jclass super_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SuperClass");
199 CHECK(super_class != nullptr);
200
201 jmethodID execute = env->GetStaticMethodID(super_class, "execute", "()V");
202 CHECK(execute != nullptr);
203
204 jclass sub_class = env->FindClass("Main$testCallStaticVoidMethodOnSubClass_SubClass");
205 CHECK(sub_class != nullptr);
206
207 env->CallStaticVoidMethod(sub_class, execute);
208 }
209
Java_Main_testGetMirandaMethodNative(JNIEnv * env,jclass)210 extern "C" JNIEXPORT jobject JNICALL Java_Main_testGetMirandaMethodNative(JNIEnv* env, jclass) {
211 jclass abstract_class = env->FindClass("Main$testGetMirandaMethod_MirandaAbstract");
212 CHECK(abstract_class != nullptr);
213 jmethodID miranda_method = env->GetMethodID(abstract_class, "inInterface", "()Z");
214 CHECK(miranda_method != nullptr);
215 return env->ToReflectedMethod(abstract_class, miranda_method, JNI_FALSE);
216 }
217
218 // https://code.google.com/p/android/issues/detail?id=63055
Java_Main_testZeroLengthByteBuffers(JNIEnv * env,jclass)219 extern "C" void JNICALL Java_Main_testZeroLengthByteBuffers(JNIEnv* env, jclass) {
220 std::vector<uint8_t> buffer(1);
221 jobject byte_buffer = env->NewDirectByteBuffer(&buffer[0], 0);
222 CHECK(byte_buffer != nullptr);
223 CHECK(!env->ExceptionCheck());
224
225 CHECK_EQ(env->GetDirectBufferAddress(byte_buffer), &buffer[0]);
226 CHECK_EQ(env->GetDirectBufferCapacity(byte_buffer), 0);
227 }
228
229 constexpr size_t kByteReturnSize = 7;
230 jbyte byte_returns[kByteReturnSize] = { 0, 1, 2, 127, -1, -2, -128 };
231
Java_Main_byteMethod(JNIEnv *,jclass,jbyte b1,jbyte b2,jbyte b3,jbyte b4,jbyte b5,jbyte b6,jbyte b7,jbyte b8,jbyte b9,jbyte b10)232 extern "C" jbyte JNICALL Java_Main_byteMethod(JNIEnv*, jclass, jbyte b1, jbyte b2,
233 jbyte b3, jbyte b4, jbyte b5, jbyte b6,
234 jbyte b7, jbyte b8, jbyte b9, jbyte b10) {
235 // We use b1 to drive the output.
236 CHECK_EQ(b2, 2);
237 CHECK_EQ(b3, -3);
238 CHECK_EQ(b4, 4);
239 CHECK_EQ(b5, -5);
240 CHECK_EQ(b6, 6);
241 CHECK_EQ(b7, -7);
242 CHECK_EQ(b8, 8);
243 CHECK_EQ(b9, -9);
244 CHECK_EQ(b10, 10);
245
246 CHECK_LE(0, b1);
247 CHECK_LT(b1, static_cast<jbyte>(kByteReturnSize));
248
249 return byte_returns[b1];
250 }
251
252 constexpr size_t kShortReturnSize = 9;
253 jshort short_returns[kShortReturnSize] = { 0, 1, 2, 127, 32767, -1, -2, -128,
254 static_cast<jshort>(0x8000) };
255 // The weird static_cast is because short int is only guaranteed down to -32767, not Java's -32768.
256
Java_Main_shortMethod(JNIEnv *,jclass,jshort s1,jshort s2,jshort s3,jshort s4,jshort s5,jshort s6,jshort s7,jshort s8,jshort s9,jshort s10)257 extern "C" jshort JNICALL Java_Main_shortMethod(JNIEnv*, jclass, jshort s1, jshort s2,
258 jshort s3, jshort s4, jshort s5, jshort s6,
259 jshort s7, jshort s8, jshort s9, jshort s10) {
260 // We use s1 to drive the output.
261 CHECK_EQ(s2, 2);
262 CHECK_EQ(s3, -3);
263 CHECK_EQ(s4, 4);
264 CHECK_EQ(s5, -5);
265 CHECK_EQ(s6, 6);
266 CHECK_EQ(s7, -7);
267 CHECK_EQ(s8, 8);
268 CHECK_EQ(s9, -9);
269 CHECK_EQ(s10, 10);
270
271 CHECK_LE(0, s1);
272 CHECK_LT(s1, static_cast<jshort>(kShortReturnSize));
273
274 return short_returns[s1];
275 }
276
Java_Main_booleanMethod(JNIEnv *,jclass,jboolean b1,jboolean b2,jboolean b3,jboolean b4,jboolean b5,jboolean b6,jboolean b7,jboolean b8,jboolean b9,jboolean b10)277 extern "C" jboolean JNICALL Java_Main_booleanMethod(JNIEnv*, jclass, jboolean b1,
278 jboolean b2, jboolean b3, jboolean b4,
279 jboolean b5, jboolean b6, jboolean b7,
280 jboolean b8, jboolean b9, jboolean b10) {
281 // We use b1 to drive the output.
282 CHECK_EQ(b2, JNI_TRUE);
283 CHECK_EQ(b3, JNI_FALSE);
284 CHECK_EQ(b4, JNI_TRUE);
285 CHECK_EQ(b5, JNI_FALSE);
286 CHECK_EQ(b6, JNI_TRUE);
287 CHECK_EQ(b7, JNI_FALSE);
288 CHECK_EQ(b8, JNI_TRUE);
289 CHECK_EQ(b9, JNI_FALSE);
290 CHECK_EQ(b10, JNI_TRUE);
291
292 CHECK(b1 == JNI_TRUE || b1 == JNI_FALSE);
293 return b1;
294 }
295
296 constexpr size_t kCharReturnSize = 8;
297 jchar char_returns[kCharReturnSize] = { 0, 1, 2, 127, 255, 256, 15000, 34000 };
298
Java_Main_charMethod(JNIEnv *,jclass,jchar c1,jchar c2,jchar c3,jchar c4,jchar c5,jchar c6,jchar c7,jchar c8,jchar c9,jchar c10)299 extern "C" jchar JNICALL Java_Main_charMethod(JNIEnv*, jclass, jchar c1, jchar c2,
300 jchar c3, jchar c4, jchar c5, jchar c6, jchar c7,
301 jchar c8, jchar c9, jchar c10) {
302 // We use c1 to drive the output.
303 CHECK_EQ(c2, 'a');
304 CHECK_EQ(c3, 'b');
305 CHECK_EQ(c4, 'c');
306 CHECK_EQ(c5, '0');
307 CHECK_EQ(c6, '1');
308 CHECK_EQ(c7, '2');
309 CHECK_EQ(c8, 1234);
310 CHECK_EQ(c9, 2345);
311 CHECK_EQ(c10, 3456);
312
313 CHECK_LT(c1, static_cast<jchar>(kCharReturnSize));
314
315 return char_returns[c1];
316 }
317
Java_Main_removeLocalObject(JNIEnv * env,jclass,jclass o)318 extern "C" JNIEXPORT void JNICALL Java_Main_removeLocalObject(JNIEnv* env, jclass, jclass o) {
319 // Delete the arg to see if it crashes.
320 env->DeleteLocalRef(o);
321 }
322
Java_Main_nativeIsAssignableFrom(JNIEnv * env,jclass,jclass from,jclass to)323 extern "C" JNIEXPORT jboolean JNICALL Java_Main_nativeIsAssignableFrom(JNIEnv* env, jclass,
324 jclass from, jclass to) {
325 return env->IsAssignableFrom(from, to);
326 }
327
testShallowGetCallingClassLoader(JNIEnv * env)328 static void testShallowGetCallingClassLoader(JNIEnv* env) {
329 // Test direct call.
330 {
331 jclass vmstack_clazz = env->FindClass("dalvik/system/VMStack");
332 CHECK(vmstack_clazz != nullptr);
333 CHECK(!env->ExceptionCheck());
334
335 jmethodID getCallingClassLoaderMethodId = env->GetStaticMethodID(vmstack_clazz,
336 "getCallingClassLoader",
337 "()Ljava/lang/ClassLoader;");
338 CHECK(getCallingClassLoaderMethodId != nullptr);
339 CHECK(!env->ExceptionCheck());
340
341 jobject class_loader = env->CallStaticObjectMethod(vmstack_clazz,
342 getCallingClassLoaderMethodId);
343 CHECK(class_loader == nullptr);
344 CHECK(!env->ExceptionCheck());
345 }
346
347 // Test one-level call. Use System.loadLibrary().
348 {
349 jclass system_clazz = env->FindClass("java/lang/System");
350 CHECK(system_clazz != nullptr);
351 CHECK(!env->ExceptionCheck());
352
353 jmethodID loadLibraryMethodId = env->GetStaticMethodID(system_clazz, "loadLibrary",
354 "(Ljava/lang/String;)V");
355 CHECK(loadLibraryMethodId != nullptr);
356 CHECK(!env->ExceptionCheck());
357
358 // Create a string object.
359 jobject library_string = env->NewStringUTF("non_existing_library");
360 CHECK(library_string != nullptr);
361 CHECK(!env->ExceptionCheck());
362
363 env->CallStaticVoidMethod(system_clazz, loadLibraryMethodId, library_string);
364 CHECK(env->ExceptionCheck());
365
366 // We expect UnsatisfiedLinkError.
367 jthrowable thrown = env->ExceptionOccurred();
368 env->ExceptionClear();
369
370 jclass unsatisfied_link_error_clazz = env->FindClass("java/lang/UnsatisfiedLinkError");
371 jclass thrown_class = env->GetObjectClass(thrown);
372 CHECK(env->IsSameObject(unsatisfied_link_error_clazz, thrown_class));
373 }
374 }
375
376 // http://b/16867274
Java_Main_nativeTestShallowGetCallingClassLoader(JNIEnv *,jclass)377 extern "C" JNIEXPORT void JNICALL Java_Main_nativeTestShallowGetCallingClassLoader(JNIEnv*,
378 jclass) {
379 PthreadHelper(&testShallowGetCallingClassLoader);
380 }
381
testShallowGetStackClass2(JNIEnv * env)382 static void testShallowGetStackClass2(JNIEnv* env) {
383 jclass vmstack_clazz = env->FindClass("dalvik/system/VMStack");
384 CHECK(vmstack_clazz != nullptr);
385 CHECK(!env->ExceptionCheck());
386
387 // Test direct call.
388 {
389 jmethodID getStackClass2MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass2",
390 "()Ljava/lang/Class;");
391 CHECK(getStackClass2MethodId != nullptr);
392 CHECK(!env->ExceptionCheck());
393
394 jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass2MethodId);
395 CHECK(caller_class == nullptr);
396 CHECK(!env->ExceptionCheck());
397 }
398
399 // Test one-level call. Use VMStack.getStackClass1().
400 {
401 jmethodID getStackClass1MethodId = env->GetStaticMethodID(vmstack_clazz, "getStackClass1",
402 "()Ljava/lang/Class;");
403 CHECK(getStackClass1MethodId != nullptr);
404 CHECK(!env->ExceptionCheck());
405
406 jobject caller_class = env->CallStaticObjectMethod(vmstack_clazz, getStackClass1MethodId);
407 CHECK(caller_class == nullptr);
408 CHECK(!env->ExceptionCheck());
409 }
410
411 // For better testing we would need to compile against libcore and have a two-deep stack
412 // ourselves.
413 }
414
Java_Main_nativeTestShallowGetStackClass2(JNIEnv *,jclass)415 extern "C" JNIEXPORT void JNICALL Java_Main_nativeTestShallowGetStackClass2(JNIEnv*, jclass) {
416 PthreadHelper(&testShallowGetStackClass2);
417 }
418
419 class JniCallNonvirtualVoidMethodTest {
420 public:
JniCallNonvirtualVoidMethodTest(JNIEnv * env)421 explicit JniCallNonvirtualVoidMethodTest(JNIEnv* env)
422 : env_(env),
423 check_jni_ri_(true),
424 check_jni_android_(true),
425 super_(GetClass("JniCallNonvirtualTest")),
426 sub_(GetClass("JniCallNonvirtualTestSubclass")),
427 super_constructor_(GetMethodID(super_, true, "<init>")),
428 super_static_(GetMethodID(super_, false, "staticMethod")),
429 super_nonstatic_(GetMethodID(super_, true, "nonstaticMethod")),
430 sub_constructor_(GetMethodID(sub_, true, "<init>")),
431 sub_static_(GetMethodID(sub_, false, "staticMethod")),
432 sub_nonstatic_(GetMethodID(sub_, true, "nonstaticMethod")),
433 super_field_(GetFieldID(super_, "nonstaticMethodSuperCalled")),
434 sub_field_(GetFieldID(super_, "nonstaticMethodSubCalled")) {}
435
Test()436 void Test() {
437 TestStaticCallNonvirtualMethod();
438 TestNewObject();
439 TestnonstaticCallNonvirtualMethod();
440 }
441
442 JNIEnv* const env_;
443
444 bool const check_jni_ri_;
445 bool const check_jni_android_;
446
447 jclass const super_;
448 jclass const sub_;
449
450 jmethodID const super_constructor_;
451 jmethodID const super_static_;
452 jmethodID const super_nonstatic_;
453 jmethodID const sub_constructor_;
454 jmethodID const sub_static_;
455 jmethodID const sub_nonstatic_;
456
457 jfieldID const super_field_;
458 jfieldID const sub_field_;
459
460 private:
GetClass(const char * class_name)461 jclass GetClass(const char* class_name) {
462 jclass c = env_->FindClass(class_name);
463 if (env_->ExceptionCheck()) {
464 env_->ExceptionDescribe();
465 env_->FatalError(__FUNCTION__);
466 }
467 CHECK(!env_->ExceptionCheck());
468 CHECK(c != nullptr);
469 return c;
470 }
471
GetMethodID(jclass c,bool nonstatic,const char * method_name)472 jmethodID GetMethodID(jclass c, bool nonstatic, const char* method_name) {
473 jmethodID m = ((nonstatic) ?
474 env_->GetMethodID(c, method_name, "()V") :
475 env_->GetStaticMethodID(c, method_name, "()V"));
476 if (env_->ExceptionCheck()) {
477 env_->ExceptionDescribe();
478 env_->FatalError(__FUNCTION__);
479 }
480 CHECK(m != nullptr);
481 return m;
482 }
483
CallConstructor(jclass c,jmethodID m)484 jobject CallConstructor(jclass c, jmethodID m) {
485 jobject o = env_->NewObject(c, m);
486 if (env_->ExceptionCheck()) {
487 env_->ExceptionDescribe();
488 env_->FatalError(__FUNCTION__);
489 }
490 CHECK(o != nullptr);
491 return o;
492 }
493
CallMethod(jobject o,jclass c,jmethodID m,bool nonstatic,const char * test_case)494 void CallMethod(jobject o, jclass c, jmethodID m, bool nonstatic, const char* test_case) {
495 printf("RUNNING %s\n", test_case);
496 env_->CallNonvirtualVoidMethod(o, c, m);
497 bool exception_check = env_->ExceptionCheck();
498 if (c == nullptr || !nonstatic) {
499 if (!exception_check) {
500 printf("FAILED %s due to missing exception\n", test_case);
501 env_->FatalError("Expected NullPointerException with null jclass");
502 }
503 env_->ExceptionClear();
504 } else if (exception_check) {
505 printf("FAILED %s due to pending exception\n", test_case);
506 env_->ExceptionDescribe();
507 env_->FatalError(test_case);
508 }
509 printf("PASSED %s\n", test_case);
510 }
511
GetFieldID(jclass c,const char * field_name)512 jfieldID GetFieldID(jclass c, const char* field_name) {
513 jfieldID m = env_->GetFieldID(c, field_name, "Z");
514 if (env_->ExceptionCheck()) {
515 env_->ExceptionDescribe();
516 env_->FatalError(__FUNCTION__);
517 }
518 CHECK(m != nullptr);
519 return m;
520 }
521
GetBooleanField(jobject o,jfieldID f)522 jboolean GetBooleanField(jobject o, jfieldID f) {
523 jboolean b = env_->GetBooleanField(o, f);
524 if (env_->ExceptionCheck()) {
525 env_->ExceptionDescribe();
526 env_->FatalError(__FUNCTION__);
527 }
528 return b;
529 }
530
TestStaticCallNonvirtualMethod()531 void TestStaticCallNonvirtualMethod() {
532 if (!check_jni_ri_&& !check_jni_android_) {
533 CallMethod(nullptr, nullptr, super_static_, false, "null object, null class, super static");
534 }
535 if (!check_jni_android_) {
536 CallMethod(nullptr, super_, super_static_, false, "null object, super class, super static");
537 }
538 if (!check_jni_android_) {
539 CallMethod(nullptr, sub_, super_static_, false, "null object, sub class, super static");
540 }
541
542 if (!check_jni_ri_ && !check_jni_android_) {
543 CallMethod(nullptr, nullptr, sub_static_, false, "null object, null class, sub static");
544 }
545 if (!check_jni_android_) {
546 CallMethod(nullptr, sub_, sub_static_, false, "null object, super class, sub static");
547 }
548 if (!check_jni_android_) {
549 CallMethod(nullptr, super_, sub_static_, false, "null object, super class, sub static");
550 }
551 }
552
TestNewObject()553 void TestNewObject() {
554 jobject super_super = CallConstructor(super_, super_constructor_);
555 jobject super_sub = CallConstructor(super_, sub_constructor_);
556 jobject sub_super = CallConstructor(sub_, super_constructor_);
557 jobject sub_sub = CallConstructor(sub_, sub_constructor_);
558
559 CHECK(env_->IsInstanceOf(super_super, super_));
560 CHECK(!env_->IsInstanceOf(super_super, sub_));
561
562 // Note that even though we called (and ran) the subclass
563 // constructor, we are not the subclass.
564 CHECK(env_->IsInstanceOf(super_sub, super_));
565 CHECK(!env_->IsInstanceOf(super_sub, sub_));
566
567 // Note that even though we called the superclass constructor, we
568 // are still the subclass.
569 CHECK(env_->IsInstanceOf(sub_super, super_));
570 CHECK(env_->IsInstanceOf(sub_super, sub_));
571
572 CHECK(env_->IsInstanceOf(sub_sub, super_));
573 CHECK(env_->IsInstanceOf(sub_sub, sub_));
574 }
575
TestnonstaticCallNonvirtualMethod(bool super_object,bool super_class,bool super_method,const char * test_case)576 void TestnonstaticCallNonvirtualMethod(bool super_object, bool super_class, bool super_method, const char* test_case) {
577 if (check_jni_android_) {
578 if (super_object && !super_method) {
579 return; // We don't allow a call with sub class method on the super class instance.
580 }
581 if (super_class && !super_method) {
582 return; // We don't allow a call with the sub class method with the super class argument.
583 }
584 }
585 jobject o = ((super_object) ?
586 CallConstructor(super_, super_constructor_) :
587 CallConstructor(sub_, sub_constructor_));
588 jclass c = (super_class) ? super_ : sub_;
589 jmethodID m = (super_method) ? super_nonstatic_ : sub_nonstatic_;
590 CallMethod(o, c, m, true, test_case);
591 jboolean super_field = GetBooleanField(o, super_field_);
592 jboolean sub_field = GetBooleanField(o, sub_field_);
593 CHECK_EQ(super_field, super_method);
594 CHECK_NE(sub_field, super_method);
595 }
596
TestnonstaticCallNonvirtualMethod()597 void TestnonstaticCallNonvirtualMethod() {
598 TestnonstaticCallNonvirtualMethod(true, true, true, "super object, super class, super nonstatic");
599 TestnonstaticCallNonvirtualMethod(true, false, true, "super object, sub class, super nonstatic");
600 TestnonstaticCallNonvirtualMethod(true, false, false, "super object, sub class, sub nonstatic");
601 TestnonstaticCallNonvirtualMethod(true, true, false, "super object, super class, sub nonstatic");
602
603 TestnonstaticCallNonvirtualMethod(false, true, true, "sub object, super class, super nonstatic");
604 TestnonstaticCallNonvirtualMethod(false, false, true, "sub object, sub class, super nonstatic");
605 TestnonstaticCallNonvirtualMethod(false, false, false, "sub object, sub class, sub nonstatic");
606 TestnonstaticCallNonvirtualMethod(false, true, false, "sub object, super class, sub nonstatic");
607 }
608 };
609
Java_Main_testCallNonvirtual(JNIEnv * env,jclass)610 extern "C" void JNICALL Java_Main_testCallNonvirtual(JNIEnv* env, jclass) {
611 JniCallNonvirtualVoidMethodTest(env).Test();
612 }
613
Java_Main_testNewStringObject(JNIEnv * env,jclass)614 extern "C" JNIEXPORT void JNICALL Java_Main_testNewStringObject(JNIEnv* env, jclass) {
615 jclass c = env->FindClass("java/lang/String");
616 CHECK(c != nullptr);
617
618 jmethodID mid1 = env->GetMethodID(c, "<init>", "()V");
619 CHECK(mid1 != nullptr);
620 CHECK(!env->ExceptionCheck());
621 jmethodID mid2 = env->GetMethodID(c, "<init>", "([B)V");
622 CHECK(mid2 != nullptr);
623 CHECK(!env->ExceptionCheck());
624 jmethodID mid3 = env->GetMethodID(c, "<init>", "([C)V");
625 CHECK(mid3 != nullptr);
626 CHECK(!env->ExceptionCheck());
627 jmethodID mid4 = env->GetMethodID(c, "<init>", "(Ljava/lang/String;)V");
628 CHECK(mid4 != nullptr);
629 CHECK(!env->ExceptionCheck());
630
631 const char* test_array = "Test";
632 int byte_array_length = strlen(test_array);
633 jbyteArray byte_array = env->NewByteArray(byte_array_length);
634 env->SetByteArrayRegion(byte_array, 0, byte_array_length, reinterpret_cast<const jbyte*>(test_array));
635
636 // Test NewObject
637 jstring s = reinterpret_cast<jstring>(env->NewObject(c, mid2, byte_array));
638 CHECK(s != nullptr);
639 CHECK_EQ(env->GetStringLength(s), byte_array_length);
640 CHECK_EQ(env->GetStringUTFLength(s), byte_array_length);
641 const char* chars = env->GetStringUTFChars(s, nullptr);
642 CHECK_EQ(strcmp(test_array, chars), 0);
643 env->ReleaseStringUTFChars(s, chars);
644
645 // Test AllocObject and Call(Nonvirtual)VoidMethod
646 jstring s1 = reinterpret_cast<jstring>(env->AllocObject(c));
647 CHECK(s1 != nullptr);
648 jstring s2 = reinterpret_cast<jstring>(env->AllocObject(c));
649 CHECK(s2 != nullptr);
650 jstring s3 = reinterpret_cast<jstring>(env->AllocObject(c));
651 CHECK(s3 != nullptr);
652 jstring s4 = reinterpret_cast<jstring>(env->AllocObject(c));
653 CHECK(s4 != nullptr);
654
655 jcharArray char_array = env->NewCharArray(5);
656 jstring string_arg = env->NewStringUTF("helloworld");
657
658 // With Var Args
659 env->CallVoidMethod(s1, mid1);
660 env->CallNonvirtualVoidMethod(s2, c, mid2, byte_array);
661
662 // With JValues
663 jvalue args3[1];
664 args3[0].l = char_array;
665 jvalue args4[1];
666 args4[0].l = string_arg;
667 env->CallVoidMethodA(s3, mid3, args3);
668 env->CallNonvirtualVoidMethodA(s4, c, mid4, args4);
669
670 // Test with global and weak global references
671 jstring s5 = reinterpret_cast<jstring>(env->AllocObject(c));
672 CHECK(s5 != nullptr);
673 s5 = reinterpret_cast<jstring>(env->NewGlobalRef(s5));
674 jstring s6 = reinterpret_cast<jstring>(env->AllocObject(c));
675 CHECK(s6 != nullptr);
676 s6 = reinterpret_cast<jstring>(env->NewWeakGlobalRef(s6));
677
678 env->CallVoidMethod(s5, mid1);
679 env->CallNonvirtualVoidMethod(s6, c, mid2, byte_array);
680 CHECK_EQ(env->GetStringLength(s5), 0);
681 CHECK_EQ(env->GetStringLength(s6), byte_array_length);
682 const char* chars6 = env->GetStringUTFChars(s6, nullptr);
683 CHECK_EQ(strcmp(test_array, chars6), 0);
684 env->ReleaseStringUTFChars(s6, chars6);
685 }
686
Java_Main_testGetMethodID(JNIEnv * env,jclass,jclass c)687 extern "C" JNIEXPORT jlong JNICALL Java_Main_testGetMethodID(JNIEnv* env, jclass, jclass c) {
688 return reinterpret_cast<jlong>(env->GetMethodID(c, "a", "()V"));
689 }
690
Java_Main_enterJniCriticalSection(JNIEnv * env,jclass,jint arraySize,jbyteArray array0,jbyteArray array1)691 extern "C" JNIEXPORT void JNICALL Java_Main_enterJniCriticalSection(JNIEnv* env, jclass,
692 jint arraySize,
693 jbyteArray array0,
694 jbyteArray array1) {
695 for (int i = 0; i < 50000; ++i) {
696 char* data0 = reinterpret_cast<char*>(env->GetPrimitiveArrayCritical(array0, nullptr));
697 char* data1 = reinterpret_cast<char*>(env->GetPrimitiveArrayCritical(array1, nullptr));
698 bool up = i % 2 == 0;
699 for (int j = 0; j < arraySize; ++j) {
700 if (up) {
701 data1[j] = data0[j] + 1;
702 } else {
703 data0[j] = data1[j] + 1;
704 }
705 }
706 env->ReleasePrimitiveArrayCritical(array1, data1, 0);
707 env->ReleasePrimitiveArrayCritical(array0, data0, 0);
708 }
709 }
710
711 class JniCallDefaultMethodsTest {
712 public:
JniCallDefaultMethodsTest(JNIEnv * env)713 explicit JniCallDefaultMethodsTest(JNIEnv* env)
714 : env_(env), concrete_class_(env_->FindClass("ConcreteClass")) {
715 CHECK(!env_->ExceptionCheck());
716 CHECK(concrete_class_ != nullptr);
717 }
718
Test()719 void Test() {
720 TestCalls("ConcreteClass", { "JniCallNonOverridenDefaultMethod",
721 "JniCallOverridenDefaultMethod",
722 "JniCallOverridenDefaultMethodWithSuper",
723 "JniCallOverridenAbstractMethod",
724 "JniCallConflictDefaultMethod",
725 "JniCallSoftConflictMethod" });
726 TestCalls("DefaultInterface", { "JniCallNonOverridenDefaultMethod",
727 "JniCallOverridenDefaultMethod",
728 "JniCallOverridenAbstractMethod",
729 "JniCallConflictDefaultMethod",
730 "JniCallSoftConflictMethod" });
731 TestCalls("AbstractInterface", { "JniCallSoftConflictMethod" });
732 TestCalls("ConflictInterface", { "JniCallConflictDefaultMethod" });
733 }
734
735 private:
TestCalls(const char * declaring_class,const std::vector<const char * > & methods)736 void TestCalls(const char* declaring_class, const std::vector<const char*>& methods) {
737 jmethodID new_method = env_->GetMethodID(concrete_class_, "<init>", "()V");
738 jobject obj = env_->NewObject(concrete_class_, new_method);
739 CHECK(!env_->ExceptionCheck());
740 CHECK(obj != nullptr);
741 jclass decl_class = env_->FindClass(declaring_class);
742 CHECK(!env_->ExceptionCheck());
743 CHECK(decl_class != nullptr);
744 for (const char* method : methods) {
745 jmethodID method_id = env_->GetMethodID(decl_class, method, "()V");
746 CHECK(!env_->ExceptionCheck());
747 printf("Calling method %s->%s on object of type ConcreteClass\n", declaring_class, method);
748 env_->CallVoidMethod(obj, method_id);
749 if (env_->ExceptionCheck()) {
750 jthrowable thrown = env_->ExceptionOccurred();
751 env_->ExceptionClear();
752 jmethodID to_string = env_->GetMethodID(
753 env_->FindClass("java/lang/Object"), "toString", "()Ljava/lang/String;");
754 jstring exception_string = (jstring) env_->CallObjectMethod(thrown, to_string);
755 CHECK(!env_->ExceptionCheck());
756 const char* exception_string_utf8 = env_->GetStringUTFChars(exception_string, nullptr);
757 CHECK(!env_->ExceptionCheck());
758 CHECK(exception_string_utf8 != nullptr);
759 printf("EXCEPTION OCCURED: %s\n", exception_string_utf8);
760 env_->ReleaseStringUTFChars(exception_string, exception_string_utf8);
761 }
762 }
763 }
764
765 JNIEnv* env_;
766 jclass concrete_class_;
767 };
768
Java_Main_testCallDefaultMethods(JNIEnv * env)769 extern "C" JNIEXPORT void JNICALL Java_Main_testCallDefaultMethods(JNIEnv* env) {
770 JniCallDefaultMethodsTest(env).Test();
771 }
772
InvokeSpecificMethod(JNIEnv * env,jobject obj,const char * method)773 static void InvokeSpecificMethod(JNIEnv* env, jobject obj, const char* method) {
774 jclass lambda_class = env->FindClass("LambdaInterface");
775 CHECK(!env->ExceptionCheck());
776 CHECK(lambda_class != nullptr);
777 jmethodID method_id = env->GetMethodID(lambda_class, method, "()V");
778 CHECK(!env->ExceptionCheck());
779 env->CallVoidMethod(obj, method_id);
780 CHECK(!env->ExceptionCheck());
781 }
782
Java_Main_testInvokeLambdaDefaultMethod(JNIEnv * e,jclass,jobject l)783 extern "C" JNIEXPORT void JNICALL Java_Main_testInvokeLambdaDefaultMethod(
784 JNIEnv* e, jclass, jobject l) {
785 InvokeSpecificMethod(e, l, "sayHiTwice");
786 }
787
Java_Main_testInvokeLambdaMethod(JNIEnv * e,jclass,jobject l)788 extern "C" JNIEXPORT void JNICALL Java_Main_testInvokeLambdaMethod(JNIEnv* e, jclass, jobject l) {
789 InvokeSpecificMethod(e, l, "sayHi");
790 }
791
792 // Register on-demand because many tests share this JNI library and
793 // we can't unconditionally register them.
Java_Main_registerNativesJniTest(JNIEnv * e,jclass kls)794 extern "C" JNIEXPORT jboolean JNICALL Java_Main_registerNativesJniTest(JNIEnv* e, jclass kls) {
795 const size_t numMethods = sizeof(sMainMethods)/sizeof(JNINativeMethod);
796
797 if (e->RegisterNatives(kls, sMainMethods, numMethods) < 0) {
798 std::cerr << "RegisterNatives failed for 'Main'" << std::endl;
799 return JNI_FALSE;
800 }
801
802 return JNI_TRUE;
803 }
804
805 // Annotated with @FastNative in Java code. Doesn't need to be explicitly registered with "!".
806 // NOTE: Has to be registered explicitly to avoid mutator lock check failures.
Java_Main_intFastNativeMethod(JNIEnv *,jclass,jint a,jint b,jint c)807 static jint Java_Main_intFastNativeMethod(JNIEnv*, jclass, jint a, jint b, jint c) {
808 return a + b + c;
809 }
810
811 // Annotated with @CriticalNative in Java code. Doesn't need to be explicitly registered with "!".
812 // NOTE: Has to be registered explicitly to avoid mutator lock check failures.
Java_Main_intCriticalNativeMethod(jint a,jint b,jint c)813 static jint Java_Main_intCriticalNativeMethod(jint a, jint b, jint c) {
814 // Note that unlike a "Fast Native" method this excludes JNIEnv and the jclass parameters.
815 return a + b + c;
816 }
817
Java_Main_lookupClinit(JNIEnv * env,jclass,jclass kls)818 extern "C" JNIEXPORT jobject JNICALL Java_Main_lookupClinit(JNIEnv* env, jclass, jclass kls) {
819 jmethodID clinit_id = env->GetStaticMethodID(kls, "<clinit>", "()V");
820
821 if (clinit_id != nullptr) {
822 jobject obj = env->ToReflectedMethod(kls, clinit_id, /*isStatic*/ true);
823 CHECK(obj != nullptr);
824 return obj;
825 } else {
826 return nullptr;
827 }
828 }
829
Java_Main_isSlowDebug(JNIEnv *,jclass)830 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isSlowDebug(JNIEnv*, jclass) {
831 // Return whether slow-debug is on. Only relevant for debug builds.
832 if (kIsDebugBuild) {
833 // Register a fake flag and get the default value it should be initialized with.
834 static bool fake_flag = false;
835 fake_flag = RegisterRuntimeDebugFlag(&fake_flag);
836
837 return fake_flag ? JNI_TRUE : JNI_FALSE;
838 }
839 // To pass the Java-side test, just so "on" for release builds.
840 return JNI_TRUE;
841 }
842
843 } // namespace art
844
845