2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include "jni_internal.h"
19 #include "art_method-inl.h"
20 #include "common_compiler_test.h"
21 #include "indirect_reference_table.h"
22 #include "java_vm_ext.h"
23 #include "jni_env_ext.h"
24 #include "mirror/string-inl.h"
25 #include "scoped_thread_state_change.h"
26 #include "ScopedLocalRef.h"
30 // TODO: Convert to CommonRuntimeTest. Currently MakeExecutable is used.
31 class JniInternalTest : public CommonCompilerTest {
33 virtual void SetUp() {
34 CommonCompilerTest::SetUp();
36 vm_ = Runtime::Current()->GetJavaVM();
38 // Turn on -verbose:jni for the JNI tests.
39 // gLogVerbosity.jni = true;
41 vm_->AttachCurrentThread(&env_, nullptr);
43 ScopedLocalRef<jclass> aioobe(env_,
44 env_->FindClass("java/lang/ArrayIndexOutOfBoundsException"));
45 CHECK(aioobe.get() != nullptr);
46 aioobe_ = reinterpret_cast<jclass>(env_->NewGlobalRef(aioobe.get()));
48 ScopedLocalRef<jclass> ase(env_, env_->FindClass("java/lang/ArrayStoreException"));
49 CHECK(ase.get() != nullptr);
50 ase_ = reinterpret_cast<jclass>(env_->NewGlobalRef(ase.get()));
52 ScopedLocalRef<jclass> sioobe(env_,
53 env_->FindClass("java/lang/StringIndexOutOfBoundsException"));
54 CHECK(sioobe.get() != nullptr);
55 sioobe_ = reinterpret_cast<jclass>(env_->NewGlobalRef(sioobe.get()));
58 void ExpectException(jclass exception_class) {
59 ScopedObjectAccess soa(env_);
60 EXPECT_TRUE(env_->ExceptionCheck())
61 << PrettyDescriptor(soa.Decode<mirror::Class*>(exception_class));
62 jthrowable exception = env_->ExceptionOccurred();
63 EXPECT_NE(nullptr, exception);
64 env_->ExceptionClear();
65 EXPECT_TRUE(env_->IsInstanceOf(exception, exception_class));
68 void CleanUpJniEnv() {
69 if (aioobe_ != nullptr) {
70 env_->DeleteGlobalRef(aioobe_);
73 if (ase_ != nullptr) {
74 env_->DeleteGlobalRef(ase_);
77 if (sioobe_ != nullptr) {
78 env_->DeleteGlobalRef(sioobe_);
83 virtual void TearDown() OVERRIDE {
85 CommonCompilerTest::TearDown();
88 jclass GetPrimitiveClass(char descriptor) {
89 ScopedObjectAccess soa(env_);
90 mirror::Class* c = class_linker_->FindPrimitiveClass(descriptor);
92 return soa.AddLocalReference<jclass>(c);
95 void ExpectClassFound(const char* name) {
96 EXPECT_NE(env_->FindClass(name), nullptr) << name;
97 EXPECT_FALSE(env_->ExceptionCheck()) << name;
100 void ExpectClassNotFound(const char* name, bool check_jni, const char* check_jni_msg,
101 CheckJniAbortCatcher* abort_catcher) {
102 EXPECT_EQ(env_->FindClass(name), nullptr) << name;
103 if (!check_jni || check_jni_msg == nullptr) {
104 EXPECT_TRUE(env_->ExceptionCheck()) << name;
105 env_->ExceptionClear();
107 abort_catcher->Check(check_jni_msg);
111 void FindClassTest(bool check_jni) {
112 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
113 CheckJniAbortCatcher check_jni_abort_catcher;
115 // Null argument is always an abort.
116 env_->FindClass(nullptr);
117 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
120 // Reference types...
121 ExpectClassFound("java/lang/String");
122 // ...for arrays too, where you must include "L;".
123 ExpectClassFound("[Ljava/lang/String;");
124 // Primitive arrays are okay too, if the primitive type is valid.
125 ExpectClassFound("[C");
127 // But primitive types aren't allowed...
128 ExpectClassNotFound("C", check_jni, nullptr, &check_jni_abort_catcher);
129 ExpectClassNotFound("V", check_jni, nullptr, &check_jni_abort_catcher);
130 ExpectClassNotFound("K", check_jni, nullptr, &check_jni_abort_catcher);
133 // Check JNI will reject invalid class names as aborts but without pending exceptions.
134 EXPECT_EQ(env_->FindClass("java.lang.String"), nullptr);
135 EXPECT_FALSE(env_->ExceptionCheck());
136 check_jni_abort_catcher.Check("illegal class name 'java.lang.String'");
138 EXPECT_EQ(env_->FindClass("[Ljava.lang.String;"), nullptr);
139 EXPECT_FALSE(env_->ExceptionCheck());
140 check_jni_abort_catcher.Check("illegal class name '[Ljava.lang.String;'");
142 // Without check JNI we're tolerant and replace '.' with '/'.
143 ExpectClassFound("java.lang.String");
144 ExpectClassFound("[Ljava.lang.String;");
147 ExpectClassNotFound("Ljava.lang.String;", check_jni, "illegal class name 'Ljava.lang.String;'",
148 &check_jni_abort_catcher);
149 ExpectClassNotFound("[java.lang.String", check_jni, "illegal class name '[java.lang.String'",
150 &check_jni_abort_catcher);
152 // You can't include the "L;" in a JNI class descriptor.
153 ExpectClassNotFound("Ljava/lang/String;", check_jni, "illegal class name 'Ljava/lang/String;'",
154 &check_jni_abort_catcher);
156 // But you must include it for an array of any reference type.
157 ExpectClassNotFound("[java/lang/String", check_jni, "illegal class name '[java/lang/String'",
158 &check_jni_abort_catcher);
160 ExpectClassNotFound("[K", check_jni, "illegal class name '[K'", &check_jni_abort_catcher);
162 // Void arrays aren't allowed.
163 ExpectClassNotFound("[V", check_jni, "illegal class name '[V'", &check_jni_abort_catcher);
165 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
168 void GetFieldIdBadArgumentTest(bool check_jni) {
169 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
170 CheckJniAbortCatcher check_jni_abort_catcher;
172 jclass c = env_->FindClass("java/lang/String");
173 ASSERT_NE(c, nullptr);
175 jfieldID fid = env_->GetFieldID(nullptr, "count", "I");
176 EXPECT_EQ(nullptr, fid);
177 check_jni_abort_catcher.Check(check_jni ? "GetFieldID received NULL jclass"
178 : "java_class == null");
179 fid = env_->GetFieldID(c, nullptr, "I");
180 EXPECT_EQ(nullptr, fid);
181 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
183 fid = env_->GetFieldID(c, "count", nullptr);
184 EXPECT_EQ(nullptr, fid);
185 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
188 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
191 void GetStaticFieldIdBadArgumentTest(bool check_jni) {
192 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
193 CheckJniAbortCatcher check_jni_abort_catcher;
195 jclass c = env_->FindClass("java/lang/String");
196 ASSERT_NE(c, nullptr);
198 jfieldID fid = env_->GetStaticFieldID(nullptr, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
199 EXPECT_EQ(nullptr, fid);
200 check_jni_abort_catcher.Check(check_jni ? "GetStaticFieldID received NULL jclass"
201 : "java_class == null");
202 fid = env_->GetStaticFieldID(c, nullptr, "Ljava/util/Comparator;");
203 EXPECT_EQ(nullptr, fid);
204 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
206 fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", nullptr);
207 EXPECT_EQ(nullptr, fid);
208 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
211 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
214 void GetMethodIdBadArgumentTest(bool check_jni) {
215 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
216 CheckJniAbortCatcher check_jni_abort_catcher;
218 jmethodID method = env_->GetMethodID(nullptr, "<init>", "(Ljava/lang/String;)V");
219 EXPECT_EQ(nullptr, method);
220 check_jni_abort_catcher.Check(check_jni ? "GetMethodID received NULL jclass"
221 : "java_class == null");
222 jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
223 ASSERT_TRUE(jlnsme != nullptr);
224 method = env_->GetMethodID(jlnsme, nullptr, "(Ljava/lang/String;)V");
225 EXPECT_EQ(nullptr, method);
226 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
228 method = env_->GetMethodID(jlnsme, "<init>", nullptr);
229 EXPECT_EQ(nullptr, method);
230 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
233 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
236 void GetStaticMethodIdBadArgumentTest(bool check_jni) {
237 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
238 CheckJniAbortCatcher check_jni_abort_catcher;
240 jmethodID method = env_->GetStaticMethodID(nullptr, "valueOf", "(I)Ljava/lang/String;");
241 EXPECT_EQ(nullptr, method);
242 check_jni_abort_catcher.Check(check_jni ? "GetStaticMethodID received NULL jclass"
243 : "java_class == null");
244 jclass jlstring = env_->FindClass("java/lang/String");
245 method = env_->GetStaticMethodID(jlstring, nullptr, "(I)Ljava/lang/String;");
246 EXPECT_EQ(nullptr, method);
247 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
249 method = env_->GetStaticMethodID(jlstring, "valueOf", nullptr);
250 EXPECT_EQ(nullptr, method);
251 check_jni_abort_catcher.Check(check_jni ? "non-nullable const char* was NULL"
254 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
257 void GetFromReflectedField_ToReflectedFieldBadArgumentTest(bool check_jni) {
258 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
259 CheckJniAbortCatcher check_jni_abort_catcher;
261 jclass c = env_->FindClass("java/lang/String");
262 ASSERT_NE(c, nullptr);
263 jfieldID fid = env_->GetFieldID(c, "count", "I");
264 ASSERT_NE(fid, nullptr);
266 // Check class argument for null argument, not checked in non-check JNI.
267 jobject field = env_->ToReflectedField(nullptr, fid, JNI_FALSE);
269 EXPECT_EQ(field, nullptr);
270 check_jni_abort_catcher.Check("ToReflectedField received NULL jclass");
272 EXPECT_NE(field, nullptr);
275 field = env_->ToReflectedField(c, nullptr, JNI_FALSE);
276 EXPECT_EQ(field, nullptr);
277 check_jni_abort_catcher.Check(check_jni ? "jfieldID was NULL"
280 fid = env_->FromReflectedField(nullptr);
281 ASSERT_EQ(fid, nullptr);
282 check_jni_abort_catcher.Check(check_jni ? "expected non-null java.lang.reflect.Field"
283 : "jlr_field == null");
285 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
288 void GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(bool check_jni) {
289 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
290 CheckJniAbortCatcher check_jni_abort_catcher;
292 jclass c = env_->FindClass("java/lang/String");
293 ASSERT_NE(c, nullptr);
294 jmethodID mid = env_->GetMethodID(c, "<init>", "()V");
295 ASSERT_NE(mid, nullptr);
297 // Check class argument for null argument, not checked in non-check JNI.
298 jobject method = env_->ToReflectedMethod(nullptr, mid, JNI_FALSE);
300 EXPECT_EQ(method, nullptr);
301 check_jni_abort_catcher.Check("ToReflectedMethod received NULL jclass");
303 EXPECT_NE(method, nullptr);
306 method = env_->ToReflectedMethod(c, nullptr, JNI_FALSE);
307 EXPECT_EQ(method, nullptr);
308 check_jni_abort_catcher.Check(check_jni ? "jmethodID was NULL"
310 mid = env_->FromReflectedMethod(method);
311 ASSERT_EQ(mid, nullptr);
312 check_jni_abort_catcher.Check(check_jni ? "expected non-null method" : "jlr_method == null");
314 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
317 void RegisterAndUnregisterNativesBadArguments(bool check_jni,
318 CheckJniAbortCatcher* check_jni_abort_catcher) {
319 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
320 // Passing a class of null is a failure.
322 JNINativeMethod methods[] = { };
323 EXPECT_EQ(env_->RegisterNatives(nullptr, methods, 0), JNI_ERR);
324 check_jni_abort_catcher->Check(check_jni ? "RegisterNatives received NULL jclass"
325 : "java_class == null");
328 // Passing methods as null is a failure.
329 jclass jlobject = env_->FindClass("java/lang/Object");
330 EXPECT_EQ(env_->RegisterNatives(jlobject, nullptr, 1), JNI_ERR);
331 check_jni_abort_catcher->Check("methods == null");
333 // Unregisters null is a failure.
334 EXPECT_EQ(env_->UnregisterNatives(nullptr), JNI_ERR);
335 check_jni_abort_catcher->Check(check_jni ? "UnregisterNatives received NULL jclass"
336 : "java_class == null");
338 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
342 void GetPrimitiveArrayElementsOfWrongType(bool check_jni) {
343 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
344 CheckJniAbortCatcher jni_abort_catcher;
346 jbooleanArray array = env_->NewBooleanArray(10);
348 EXPECT_EQ(env_->GetByteArrayElements(reinterpret_cast<jbyteArray>(array), &is_copy), nullptr);
349 jni_abort_catcher.Check(
350 check_jni ? "incompatible array type boolean[] expected byte[]"
351 : "attempt to get byte primitive array elements with an object of type boolean[]");
352 EXPECT_EQ(env_->GetShortArrayElements(reinterpret_cast<jshortArray>(array), &is_copy), nullptr);
353 jni_abort_catcher.Check(
354 check_jni ? "incompatible array type boolean[] expected short[]"
355 : "attempt to get short primitive array elements with an object of type boolean[]");
356 EXPECT_EQ(env_->GetCharArrayElements(reinterpret_cast<jcharArray>(array), &is_copy), nullptr);
357 jni_abort_catcher.Check(
358 check_jni ? "incompatible array type boolean[] expected char[]"
359 : "attempt to get char primitive array elements with an object of type boolean[]");
360 EXPECT_EQ(env_->GetIntArrayElements(reinterpret_cast<jintArray>(array), &is_copy), nullptr);
361 jni_abort_catcher.Check(
362 check_jni ? "incompatible array type boolean[] expected int[]"
363 : "attempt to get int primitive array elements with an object of type boolean[]");
364 EXPECT_EQ(env_->GetLongArrayElements(reinterpret_cast<jlongArray>(array), &is_copy), nullptr);
365 jni_abort_catcher.Check(
366 check_jni ? "incompatible array type boolean[] expected long[]"
367 : "attempt to get long primitive array elements with an object of type boolean[]");
368 EXPECT_EQ(env_->GetFloatArrayElements(reinterpret_cast<jfloatArray>(array), &is_copy), nullptr);
369 jni_abort_catcher.Check(
370 check_jni ? "incompatible array type boolean[] expected float[]"
371 : "attempt to get float primitive array elements with an object of type boolean[]");
372 EXPECT_EQ(env_->GetDoubleArrayElements(reinterpret_cast<jdoubleArray>(array), &is_copy), nullptr);
373 jni_abort_catcher.Check(
374 check_jni ? "incompatible array type boolean[] expected double[]"
375 : "attempt to get double primitive array elements with an object of type boolean[]");
376 jbyteArray array2 = env_->NewByteArray(10);
377 EXPECT_EQ(env_->GetBooleanArrayElements(reinterpret_cast<jbooleanArray>(array2), &is_copy),
379 jni_abort_catcher.Check(
380 check_jni ? "incompatible array type byte[] expected boolean[]"
381 : "attempt to get boolean primitive array elements with an object of type byte[]");
382 jobject object = env_->NewStringUTF("Test String");
383 EXPECT_EQ(env_->GetBooleanArrayElements(reinterpret_cast<jbooleanArray>(object), &is_copy),
385 jni_abort_catcher.Check(
386 check_jni ? "jarray argument has non-array type: java.lang.String"
387 : "attempt to get boolean primitive array elements with an object of type java.lang.String");
389 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
392 void ReleasePrimitiveArrayElementsOfWrongType(bool check_jni) {
393 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
394 CheckJniAbortCatcher jni_abort_catcher;
396 jbooleanArray array = env_->NewBooleanArray(10);
397 ASSERT_TRUE(array != nullptr);
399 jboolean* elements = env_->GetBooleanArrayElements(array, &is_copy);
400 ASSERT_TRUE(elements != nullptr);
401 env_->ReleaseByteArrayElements(reinterpret_cast<jbyteArray>(array),
402 reinterpret_cast<jbyte*>(elements), 0);
403 jni_abort_catcher.Check(
404 check_jni ? "incompatible array type boolean[] expected byte[]"
405 : "attempt to release byte primitive array elements with an object of type boolean[]");
406 env_->ReleaseShortArrayElements(reinterpret_cast<jshortArray>(array),
407 reinterpret_cast<jshort*>(elements), 0);
408 jni_abort_catcher.Check(
409 check_jni ? "incompatible array type boolean[] expected short[]"
410 : "attempt to release short primitive array elements with an object of type boolean[]");
411 env_->ReleaseCharArrayElements(reinterpret_cast<jcharArray>(array),
412 reinterpret_cast<jchar*>(elements), 0);
413 jni_abort_catcher.Check(
414 check_jni ? "incompatible array type boolean[] expected char[]"
415 : "attempt to release char primitive array elements with an object of type boolean[]");
416 env_->ReleaseIntArrayElements(reinterpret_cast<jintArray>(array),
417 reinterpret_cast<jint*>(elements), 0);
418 jni_abort_catcher.Check(
419 check_jni ? "incompatible array type boolean[] expected int[]"
420 : "attempt to release int primitive array elements with an object of type boolean[]");
421 env_->ReleaseLongArrayElements(reinterpret_cast<jlongArray>(array),
422 reinterpret_cast<jlong*>(elements), 0);
423 jni_abort_catcher.Check(
424 check_jni ? "incompatible array type boolean[] expected long[]"
425 : "attempt to release long primitive array elements with an object of type boolean[]");
426 env_->ReleaseFloatArrayElements(reinterpret_cast<jfloatArray>(array),
427 reinterpret_cast<jfloat*>(elements), 0);
428 jni_abort_catcher.Check(
429 check_jni ? "incompatible array type boolean[] expected float[]"
430 : "attempt to release float primitive array elements with an object of type boolean[]");
431 env_->ReleaseDoubleArrayElements(reinterpret_cast<jdoubleArray>(array),
432 reinterpret_cast<jdouble*>(elements), 0);
433 jni_abort_catcher.Check(
434 check_jni ? "incompatible array type boolean[] expected double[]"
435 : "attempt to release double primitive array elements with an object of type boolean[]");
437 // Don't leak the elements array.
438 env_->ReleaseBooleanArrayElements(array, elements, 0);
441 jbyteArray array = env_->NewByteArray(10);
443 jbyte* elements = env_->GetByteArrayElements(array, &is_copy);
445 env_->ReleaseBooleanArrayElements(reinterpret_cast<jbooleanArray>(array),
446 reinterpret_cast<jboolean*>(elements), 0);
447 jni_abort_catcher.Check(
448 check_jni ? "incompatible array type byte[] expected boolean[]"
449 : "attempt to release boolean primitive array elements with an object of type byte[]");
450 jobject object = env_->NewStringUTF("Test String");
451 env_->ReleaseBooleanArrayElements(reinterpret_cast<jbooleanArray>(object),
452 reinterpret_cast<jboolean*>(elements), 0);
453 jni_abort_catcher.Check(
454 check_jni ? "jarray argument has non-array type: java.lang.String"
455 : "attempt to release boolean primitive array elements with an object of type "
458 // Don't leak the elements array.
459 env_->ReleaseByteArrayElements(array, elements, 0);
461 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
464 void GetReleasePrimitiveArrayCriticalOfWrongType(bool check_jni) {
465 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
466 CheckJniAbortCatcher jni_abort_catcher;
468 jobject object = env_->NewStringUTF("Test String");
470 void* elements = env_->GetPrimitiveArrayCritical(reinterpret_cast<jarray>(object), &is_copy);
471 jni_abort_catcher.Check(check_jni ? "jarray argument has non-array type: java.lang.String"
472 : "expected primitive array, given java.lang.String");
473 env_->ReleasePrimitiveArrayCritical(reinterpret_cast<jarray>(object), elements, 0);
474 jni_abort_catcher.Check(check_jni ? "jarray argument has non-array type: java.lang.String"
475 : "expected primitive array, given java.lang.String");
477 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
480 void GetPrimitiveArrayRegionElementsOfWrongType(bool check_jni) {
481 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
482 CheckJniAbortCatcher jni_abort_catcher;
483 constexpr size_t kLength = 10;
484 jbooleanArray array = env_->NewBooleanArray(kLength);
485 ASSERT_TRUE(array != nullptr);
486 jboolean elements[kLength];
487 env_->GetByteArrayRegion(reinterpret_cast<jbyteArray>(array), 0, kLength,
488 reinterpret_cast<jbyte*>(elements));
489 jni_abort_catcher.Check(
490 check_jni ? "incompatible array type boolean[] expected byte[]"
491 : "attempt to get region of byte primitive array elements with an object of type boolean[]");
492 env_->GetShortArrayRegion(reinterpret_cast<jshortArray>(array), 0, kLength,
493 reinterpret_cast<jshort*>(elements));
494 jni_abort_catcher.Check(
495 check_jni ? "incompatible array type boolean[] expected short[]"
496 : "attempt to get region of short primitive array elements with an object of type boolean[]");
497 env_->GetCharArrayRegion(reinterpret_cast<jcharArray>(array), 0, kLength,
498 reinterpret_cast<jchar*>(elements));
499 jni_abort_catcher.Check(
500 check_jni ? "incompatible array type boolean[] expected char[]"
501 : "attempt to get region of char primitive array elements with an object of type boolean[]");
502 env_->GetIntArrayRegion(reinterpret_cast<jintArray>(array), 0, kLength,
503 reinterpret_cast<jint*>(elements));
504 jni_abort_catcher.Check(
505 check_jni ? "incompatible array type boolean[] expected int[]"
506 : "attempt to get region of int primitive array elements with an object of type boolean[]");
507 env_->GetLongArrayRegion(reinterpret_cast<jlongArray>(array), 0, kLength,
508 reinterpret_cast<jlong*>(elements));
509 jni_abort_catcher.Check(
510 check_jni ? "incompatible array type boolean[] expected long[]"
511 : "attempt to get region of long primitive array elements with an object of type boolean[]");
512 env_->GetFloatArrayRegion(reinterpret_cast<jfloatArray>(array), 0, kLength,
513 reinterpret_cast<jfloat*>(elements));
514 jni_abort_catcher.Check(
515 check_jni ? "incompatible array type boolean[] expected float[]"
516 : "attempt to get region of float primitive array elements with an object of type boolean[]");
517 env_->GetDoubleArrayRegion(reinterpret_cast<jdoubleArray>(array), 0, kLength,
518 reinterpret_cast<jdouble*>(elements));
519 jni_abort_catcher.Check(
520 check_jni ? "incompatible array type boolean[] expected double[]"
521 : "attempt to get region of double primitive array elements with an object of type boolean[]");
522 jbyteArray array2 = env_->NewByteArray(10);
523 env_->GetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(array2), 0, kLength,
524 reinterpret_cast<jboolean*>(elements));
525 jni_abort_catcher.Check(
526 check_jni ? "incompatible array type byte[] expected boolean[]"
527 : "attempt to get region of boolean primitive array elements with an object of type byte[]");
528 jobject object = env_->NewStringUTF("Test String");
529 env_->GetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(object), 0, kLength,
530 reinterpret_cast<jboolean*>(elements));
531 jni_abort_catcher.Check(check_jni ? "jarray argument has non-array type: java.lang.String"
532 : "attempt to get region of boolean primitive array elements with an object of type "
535 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
538 void SetPrimitiveArrayRegionElementsOfWrongType(bool check_jni) {
539 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
540 CheckJniAbortCatcher jni_abort_catcher;
541 constexpr size_t kLength = 10;
542 jbooleanArray array = env_->NewBooleanArray(kLength);
543 ASSERT_TRUE(array != nullptr);
544 jboolean elements[kLength];
545 env_->SetByteArrayRegion(reinterpret_cast<jbyteArray>(array), 0, kLength,
546 reinterpret_cast<jbyte*>(elements));
547 jni_abort_catcher.Check(
548 check_jni ? "incompatible array type boolean[] expected byte[]"
549 : "attempt to set region of byte primitive array elements with an object of type boolean[]");
550 env_->SetShortArrayRegion(reinterpret_cast<jshortArray>(array), 0, kLength,
551 reinterpret_cast<jshort*>(elements));
552 jni_abort_catcher.Check(
553 check_jni ? "incompatible array type boolean[] expected short[]"
554 : "attempt to set region of short primitive array elements with an object of type boolean[]");
555 env_->SetCharArrayRegion(reinterpret_cast<jcharArray>(array), 0, kLength,
556 reinterpret_cast<jchar*>(elements));
557 jni_abort_catcher.Check(
558 check_jni ? "incompatible array type boolean[] expected char[]"
559 : "attempt to set region of char primitive array elements with an object of type boolean[]");
560 env_->SetIntArrayRegion(reinterpret_cast<jintArray>(array), 0, kLength,
561 reinterpret_cast<jint*>(elements));
562 jni_abort_catcher.Check(
563 check_jni ? "incompatible array type boolean[] expected int[]"
564 : "attempt to set region of int primitive array elements with an object of type boolean[]");
565 env_->SetLongArrayRegion(reinterpret_cast<jlongArray>(array), 0, kLength,
566 reinterpret_cast<jlong*>(elements));
567 jni_abort_catcher.Check(
568 check_jni ? "incompatible array type boolean[] expected long[]"
569 : "attempt to set region of long primitive array elements with an object of type boolean[]");
570 env_->SetFloatArrayRegion(reinterpret_cast<jfloatArray>(array), 0, kLength,
571 reinterpret_cast<jfloat*>(elements));
572 jni_abort_catcher.Check(
573 check_jni ? "incompatible array type boolean[] expected float[]"
574 : "attempt to set region of float primitive array elements with an object of type boolean[]");
575 env_->SetDoubleArrayRegion(reinterpret_cast<jdoubleArray>(array), 0, kLength,
576 reinterpret_cast<jdouble*>(elements));
577 jni_abort_catcher.Check(
578 check_jni ? "incompatible array type boolean[] expected double[]"
579 : "attempt to set region of double primitive array elements with an object of type boolean[]");
580 jbyteArray array2 = env_->NewByteArray(10);
581 env_->SetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(array2), 0, kLength,
582 reinterpret_cast<jboolean*>(elements));
583 jni_abort_catcher.Check(
584 check_jni ? "incompatible array type byte[] expected boolean[]"
585 : "attempt to set region of boolean primitive array elements with an object of type byte[]");
586 jobject object = env_->NewStringUTF("Test String");
587 env_->SetBooleanArrayRegion(reinterpret_cast<jbooleanArray>(object), 0, kLength,
588 reinterpret_cast<jboolean*>(elements));
589 jni_abort_catcher.Check(check_jni ? "jarray argument has non-array type: java.lang.String"
590 : "attempt to set region of boolean primitive array elements with an object of type "
592 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
595 void NewObjectArrayBadArguments(bool check_jni) {
596 bool old_check_jni = vm_->SetCheckJniEnabled(check_jni);
597 CheckJniAbortCatcher jni_abort_catcher;
599 jclass element_class = env_->FindClass("java/lang/String");
600 ASSERT_NE(element_class, nullptr);
602 env_->NewObjectArray(-1, element_class, nullptr);
603 jni_abort_catcher.Check(check_jni ? "negative jsize: -1" : "negative array length: -1");
605 env_->NewObjectArray(std::numeric_limits<jint>::min(), element_class, nullptr);
606 jni_abort_catcher.Check(check_jni ? "negative jsize: -2147483648"
607 : "negative array length: -2147483648");
609 EXPECT_EQ(check_jni, vm_->SetCheckJniEnabled(old_check_jni));
612 void SetUpForTest(bool direct, const char* method_name, const char* method_sig,
613 void* native_fnptr) {
614 // Initialize class loader and set generic JNI entrypoint.
615 // Note: this code is adapted from the jni_compiler_test, and taken with minimal modifications.
616 if (!runtime_->IsStarted()) {
618 ScopedObjectAccess soa(Thread::Current());
619 class_loader_ = LoadDex("MyClassNatives");
620 StackHandleScope<1> hs(soa.Self());
621 Handle<mirror::ClassLoader> loader(
622 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(class_loader_)));
623 mirror::Class* c = class_linker_->FindClass(soa.Self(), "LMyClassNatives;", loader);
624 const auto pointer_size = class_linker_->GetImagePointerSize();
625 ArtMethod* method = direct ? c->FindDirectMethod(method_name, method_sig, pointer_size) :
626 c->FindVirtualMethod(method_name, method_sig, pointer_size);
627 ASSERT_TRUE(method != nullptr) << method_name << " " << method_sig;
628 method->SetEntryPointFromQuickCompiledCode(class_linker_->GetRuntimeQuickGenericJniStub());
631 Thread::Current()->TransitionFromSuspendedToRunnable();
632 bool started = runtime_->Start();
635 // JNI operations after runtime start.
636 env_ = Thread::Current()->GetJniEnv();
637 jklass_ = env_->FindClass("MyClassNatives");
638 ASSERT_TRUE(jklass_ != nullptr) << method_name << " " << method_sig;
641 jmethod_ = env_->GetStaticMethodID(jklass_, method_name, method_sig);
643 jmethod_ = env_->GetMethodID(jklass_, method_name, method_sig);
645 ASSERT_TRUE(jmethod_ != nullptr) << method_name << " " << method_sig;
647 if (native_fnptr != nullptr) {
648 JNINativeMethod methods[] = { { method_name, method_sig, native_fnptr } };
649 ASSERT_EQ(JNI_OK, env_->RegisterNatives(jklass_, methods, 1))
650 << method_name << " " << method_sig;
652 env_->UnregisterNatives(jklass_);
655 jmethodID constructor = env_->GetMethodID(jklass_, "<init>", "()V");
656 jobj_ = env_->NewObject(jklass_, constructor);
657 ASSERT_TRUE(jobj_ != nullptr) << method_name << " " << method_sig;
668 jobject class_loader_;
672 TEST_F(JniInternalTest, AllocObject) {
673 jclass c = env_->FindClass("java/lang/String");
674 ASSERT_NE(c, nullptr);
675 jobject o = env_->AllocObject(c);
676 ASSERT_NE(o, nullptr);
678 // We have an instance of the class we asked for...
679 ASSERT_TRUE(env_->IsInstanceOf(o, c));
680 // ...whose fields haven't been initialized because
681 // we didn't call a constructor.
682 ASSERT_EQ(0, env_->GetIntField(o, env_->GetFieldID(c, "count", "I")));
685 TEST_F(JniInternalTest, GetVersion) {
686 ASSERT_EQ(JNI_VERSION_1_6, env_->GetVersion());
689 TEST_F(JniInternalTest, FindClass) {
690 // This tests leads to warnings in the log.
691 ScopedLogSeverity sls(LogSeverity::ERROR);
693 FindClassTest(false);
697 TEST_F(JniInternalTest, GetFieldID) {
698 jclass jlnsfe = env_->FindClass("java/lang/NoSuchFieldError");
699 ASSERT_NE(jlnsfe, nullptr);
700 jclass c = env_->FindClass("java/lang/String");
701 ASSERT_NE(c, nullptr);
704 jfieldID fid = env_->GetFieldID(c, "count", "J");
705 EXPECT_EQ(nullptr, fid);
706 ExpectException(jlnsfe);
708 // Wrong type where type doesn't exist.
709 fid = env_->GetFieldID(c, "count", "Lrod/jane/freddy;");
710 EXPECT_EQ(nullptr, fid);
711 ExpectException(jlnsfe);
714 fid = env_->GetFieldID(c, "Count", "I");
715 EXPECT_EQ(nullptr, fid);
716 ExpectException(jlnsfe);
718 // Good declared field lookup.
719 fid = env_->GetFieldID(c, "count", "I");
720 EXPECT_NE(nullptr, fid);
721 EXPECT_FALSE(env_->ExceptionCheck());
723 // Good superclass field lookup.
724 c = env_->FindClass("java/lang/StringBuilder");
725 fid = env_->GetFieldID(c, "count", "I");
726 EXPECT_NE(nullptr, fid);
727 EXPECT_NE(fid, nullptr);
728 EXPECT_FALSE(env_->ExceptionCheck());
731 fid = env_->GetFieldID(c, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
732 EXPECT_EQ(nullptr, fid);
733 ExpectException(jlnsfe);
736 GetFieldIdBadArgumentTest(false);
737 GetFieldIdBadArgumentTest(true);
740 TEST_F(JniInternalTest, GetStaticFieldID) {
741 jclass jlnsfe = env_->FindClass("java/lang/NoSuchFieldError");
742 ASSERT_NE(jlnsfe, nullptr);
743 jclass c = env_->FindClass("java/lang/String");
744 ASSERT_NE(c, nullptr);
747 jfieldID fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "J");
748 EXPECT_EQ(nullptr, fid);
749 ExpectException(jlnsfe);
751 // Wrong type where type doesn't exist.
752 fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "Lrod/jane/freddy;");
753 EXPECT_EQ(nullptr, fid);
754 ExpectException(jlnsfe);
757 fid = env_->GetStaticFieldID(c, "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
758 EXPECT_EQ(nullptr, fid);
759 ExpectException(jlnsfe);
761 // Good declared field lookup.
762 fid = env_->GetStaticFieldID(c, "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
763 EXPECT_NE(nullptr, fid);
764 EXPECT_NE(fid, nullptr);
765 EXPECT_FALSE(env_->ExceptionCheck());
768 fid = env_->GetStaticFieldID(c, "count", "I");
769 EXPECT_EQ(nullptr, fid);
770 ExpectException(jlnsfe);
773 GetStaticFieldIdBadArgumentTest(false);
774 GetStaticFieldIdBadArgumentTest(true);
777 TEST_F(JniInternalTest, GetMethodID) {
778 jclass jlobject = env_->FindClass("java/lang/Object");
779 jclass jlstring = env_->FindClass("java/lang/String");
780 jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
781 jclass jncrbc = env_->FindClass("java/nio/channels/ReadableByteChannel");
783 // Sanity check that no exceptions are pending.
784 ASSERT_FALSE(env_->ExceptionCheck());
786 // Check that java.lang.Object.foo() doesn't exist and NoSuchMethodError is
787 // a pending exception.
788 jmethodID method = env_->GetMethodID(jlobject, "foo", "()V");
789 EXPECT_EQ(nullptr, method);
790 ExpectException(jlnsme);
792 // Check that java.lang.Object.equals() does exist.
793 method = env_->GetMethodID(jlobject, "equals", "(Ljava/lang/Object;)Z");
794 EXPECT_NE(nullptr, method);
795 EXPECT_FALSE(env_->ExceptionCheck());
797 // Check that GetMethodID for java.lang.String.valueOf(int) fails as the
799 method = env_->GetMethodID(jlstring, "valueOf", "(I)Ljava/lang/String;");
800 EXPECT_EQ(nullptr, method);
801 ExpectException(jlnsme);
803 // Check that GetMethodID for java.lang.NoSuchMethodError.<init>(String) finds the constructor.
804 method = env_->GetMethodID(jlnsme, "<init>", "(Ljava/lang/String;)V");
805 EXPECT_NE(nullptr, method);
806 EXPECT_FALSE(env_->ExceptionCheck());
808 // Check that GetMethodID can find a interface method inherited from another interface.
809 method = env_->GetMethodID(jncrbc, "close", "()V");
810 EXPECT_NE(nullptr, method);
811 EXPECT_FALSE(env_->ExceptionCheck());
814 GetMethodIdBadArgumentTest(false);
815 GetMethodIdBadArgumentTest(true);
818 TEST_F(JniInternalTest, CallVoidMethodNullReceiver) {
819 jclass jlobject = env_->FindClass("java/lang/Object");
822 // Check that GetMethodID for java.lang.NoSuchMethodError.<init>(String) finds the constructor.
823 method = env_->GetMethodID(jlobject, "<init>", "()V");
824 EXPECT_NE(nullptr, method);
825 EXPECT_FALSE(env_->ExceptionCheck());
827 // Null object to CallVoidMethod.
828 CheckJniAbortCatcher check_jni_abort_catcher;
829 env_->CallVoidMethod(nullptr, method);
830 check_jni_abort_catcher.Check("null");
833 TEST_F(JniInternalTest, GetStaticMethodID) {
834 jclass jlobject = env_->FindClass("java/lang/Object");
835 jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
837 // Sanity check that no exceptions are pending
838 ASSERT_FALSE(env_->ExceptionCheck());
840 // Check that java.lang.Object.foo() doesn't exist and NoSuchMethodError is
841 // a pending exception
842 jmethodID method = env_->GetStaticMethodID(jlobject, "foo", "()V");
843 EXPECT_EQ(nullptr, method);
844 ExpectException(jlnsme);
846 // Check that GetStaticMethodID for java.lang.Object.equals(Object) fails as
847 // the method is not static
848 method = env_->GetStaticMethodID(jlobject, "equals", "(Ljava/lang/Object;)Z");
849 EXPECT_EQ(nullptr, method);
850 ExpectException(jlnsme);
852 // Check that java.lang.String.valueOf(int) does exist
853 jclass jlstring = env_->FindClass("java/lang/String");
854 method = env_->GetStaticMethodID(jlstring, "valueOf", "(I)Ljava/lang/String;");
855 EXPECT_NE(nullptr, method);
856 EXPECT_FALSE(env_->ExceptionCheck());
859 GetStaticMethodIdBadArgumentTest(false);
860 GetStaticMethodIdBadArgumentTest(true);
863 TEST_F(JniInternalTest, FromReflectedField_ToReflectedField) {
864 jclass jlrField = env_->FindClass("java/lang/reflect/Field");
865 jclass c = env_->FindClass("java/lang/String");
866 ASSERT_NE(c, nullptr);
867 jfieldID fid = env_->GetFieldID(c, "count", "I");
868 ASSERT_NE(fid, nullptr);
869 // Turn the fid into a java.lang.reflect.Field...
870 jobject field = env_->ToReflectedField(c, fid, JNI_FALSE);
871 for (size_t i = 0; i <= kLocalsMax; ++i) {
872 // Regression test for b/18396311, ToReflectedField leaking local refs causing a local
873 // reference table overflows with 512 references to ArtField
874 env_->DeleteLocalRef(env_->ToReflectedField(c, fid, JNI_FALSE));
876 ASSERT_NE(c, nullptr);
877 ASSERT_TRUE(env_->IsInstanceOf(field, jlrField));
878 // ...and back again.
879 jfieldID fid2 = env_->FromReflectedField(field);
880 ASSERT_NE(fid2, nullptr);
881 // Make sure we can actually use it.
882 jstring s = env_->NewStringUTF("poop");
883 ASSERT_EQ(4, env_->GetIntField(s, fid2));
886 GetFromReflectedField_ToReflectedFieldBadArgumentTest(false);
887 GetFromReflectedField_ToReflectedFieldBadArgumentTest(true);
890 TEST_F(JniInternalTest, FromReflectedMethod_ToReflectedMethod) {
891 jclass jlrMethod = env_->FindClass("java/lang/reflect/Method");
892 ASSERT_NE(jlrMethod, nullptr);
893 jclass jlrConstructor = env_->FindClass("java/lang/reflect/Constructor");
894 ASSERT_NE(jlrConstructor, nullptr);
895 jclass c = env_->FindClass("java/lang/String");
896 ASSERT_NE(c, nullptr);
898 jmethodID mid = env_->GetMethodID(c, "<init>", "()V");
899 ASSERT_NE(mid, nullptr);
900 // Turn the mid into a java.lang.reflect.Constructor...
901 jobject method = env_->ToReflectedMethod(c, mid, JNI_FALSE);
902 for (size_t i = 0; i <= kLocalsMax; ++i) {
903 // Regression test for b/18396311, ToReflectedMethod leaking local refs causing a local
904 // reference table overflows with 512 references to ArtMethod
905 env_->DeleteLocalRef(env_->ToReflectedMethod(c, mid, JNI_FALSE));
907 ASSERT_NE(method, nullptr);
908 ASSERT_TRUE(env_->IsInstanceOf(method, jlrConstructor));
909 // ...and back again.
910 jmethodID mid2 = env_->FromReflectedMethod(method);
911 ASSERT_NE(mid2, nullptr);
912 // Make sure we can actually use it.
913 jstring s = reinterpret_cast<jstring>(env_->AllocObject(c));
914 ASSERT_NE(s, nullptr);
915 env_->CallVoidMethod(s, mid2);
916 ASSERT_EQ(JNI_FALSE, env_->ExceptionCheck());
917 env_->ExceptionClear();
919 mid = env_->GetMethodID(c, "length", "()I");
920 ASSERT_NE(mid, nullptr);
921 // Turn the mid into a java.lang.reflect.Method...
922 method = env_->ToReflectedMethod(c, mid, JNI_FALSE);
923 ASSERT_NE(method, nullptr);
924 ASSERT_TRUE(env_->IsInstanceOf(method, jlrMethod));
925 // ...and back again.
926 mid2 = env_->FromReflectedMethod(method);
927 ASSERT_NE(mid2, nullptr);
928 // Make sure we can actually use it.
929 s = env_->NewStringUTF("poop");
930 ASSERT_NE(s, nullptr);
931 ASSERT_EQ(4, env_->CallIntMethod(s, mid2));
934 GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(false);
935 GetFromReflectedMethod_ToReflectedMethodBadArgumentTest(true);
938 static void BogusMethod() {
939 // You can't pass null function pointers to RegisterNatives.
942 TEST_F(JniInternalTest, RegisterAndUnregisterNatives) {
943 jclass jlobject = env_->FindClass("java/lang/Object");
944 jclass jlnsme = env_->FindClass("java/lang/NoSuchMethodError");
945 void* native_function = reinterpret_cast<void*>(BogusMethod);
947 // Sanity check that no exceptions are pending.
948 ASSERT_FALSE(env_->ExceptionCheck());
950 // The following can print errors to the log we'd like to ignore.
952 ScopedLogSeverity sls(LogSeverity::FATAL);
953 // Check that registering method without name causes a NoSuchMethodError.
955 JNINativeMethod methods[] = { { nullptr, "()V", native_function } };
956 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
958 ExpectException(jlnsme);
960 // Check that registering method without signature causes a NoSuchMethodError.
962 JNINativeMethod methods[] = { { "notify", nullptr, native_function } };
963 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
965 ExpectException(jlnsme);
967 // Check that registering method without function causes a NoSuchMethodError.
969 JNINativeMethod methods[] = { { "notify", "()V", nullptr } };
970 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
972 ExpectException(jlnsme);
974 // Check that registering to a non-existent java.lang.Object.foo() causes a NoSuchMethodError.
976 JNINativeMethod methods[] = { { "foo", "()V", native_function } };
977 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
979 ExpectException(jlnsme);
981 // Check that registering non-native methods causes a NoSuchMethodError.
983 JNINativeMethod methods[] = { { "equals", "(Ljava/lang/Object;)Z", native_function } };
984 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_ERR);
986 ExpectException(jlnsme);
989 // Check that registering native methods is successful.
991 JNINativeMethod methods[] = { { "notify", "()V", native_function } };
992 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 1), JNI_OK);
994 EXPECT_FALSE(env_->ExceptionCheck());
995 EXPECT_EQ(env_->UnregisterNatives(jlobject), JNI_OK);
997 // Check that registering no methods isn't a failure.
999 JNINativeMethod methods[] = { };
1000 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, 0), JNI_OK);
1002 EXPECT_FALSE(env_->ExceptionCheck());
1003 EXPECT_EQ(env_->UnregisterNatives(jlobject), JNI_OK);
1005 // Check that registering a -ve number of methods is a failure.
1006 CheckJniAbortCatcher check_jni_abort_catcher;
1007 for (int i = -10; i < 0; ++i) {
1008 JNINativeMethod methods[] = { };
1009 EXPECT_EQ(env_->RegisterNatives(jlobject, methods, i), JNI_ERR);
1010 check_jni_abort_catcher.Check("negative method count: ");
1012 EXPECT_FALSE(env_->ExceptionCheck());
1014 // Unregistering a class with no natives is a warning.
1015 EXPECT_EQ(env_->UnregisterNatives(jlnsme), JNI_OK);
1017 RegisterAndUnregisterNativesBadArguments(false, &check_jni_abort_catcher);
1018 RegisterAndUnregisterNativesBadArguments(true, &check_jni_abort_catcher);
1021 #define EXPECT_PRIMITIVE_ARRAY(new_fn, \
1025 release_elements_fn, \
1027 expected_class_descriptor) \
1031 CheckJniAbortCatcher jni_abort_catcher; \
1032 down_cast<JNIEnvExt*>(env_)->SetCheckJniEnabled(false); \
1033 /* Allocate an negative sized array and check it has the right failure type. */ \
1034 EXPECT_EQ(env_->new_fn(-1), nullptr); \
1035 jni_abort_catcher.Check("negative array length: -1"); \
1036 EXPECT_EQ(env_->new_fn(std::numeric_limits<jint>::min()), nullptr); \
1037 jni_abort_catcher.Check("negative array length: -2147483648"); \
1038 /* Pass the array as null. */ \
1039 EXPECT_EQ(0, env_->GetArrayLength(nullptr)); \
1040 jni_abort_catcher.Check("java_array == null"); \
1041 env_->get_region_fn(nullptr, 0, 0, nullptr); \
1042 jni_abort_catcher.Check("java_array == null"); \
1043 env_->set_region_fn(nullptr, 0, 0, nullptr); \
1044 jni_abort_catcher.Check("java_array == null"); \
1045 env_->get_elements_fn(nullptr, nullptr); \
1046 jni_abort_catcher.Check("java_array == null"); \
1047 env_->release_elements_fn(nullptr, nullptr, 0); \
1048 jni_abort_catcher.Check("java_array == null"); \
1049 /* Pass the elements for region as null. */ \
1050 scalar_type ## Array a = env_->new_fn(size); \
1051 env_->get_region_fn(a, 0, size, nullptr); \
1052 jni_abort_catcher.Check("buf == null"); \
1053 env_->set_region_fn(a, 0, size, nullptr); \
1054 jni_abort_catcher.Check("buf == null"); \
1055 down_cast<JNIEnvExt*>(env_)->SetCheckJniEnabled(true); \
1057 /* Allocate an array and check it has the right type and length. */ \
1058 scalar_type ## Array a = env_->new_fn(size); \
1059 EXPECT_NE(a, nullptr); \
1060 EXPECT_TRUE(env_->IsInstanceOf(a, env_->FindClass(expected_class_descriptor))); \
1061 EXPECT_EQ(size, env_->GetArrayLength(a)); \
1063 /* GetPrimitiveArrayRegion/SetPrimitiveArrayRegion */ \
1064 /* AIOOBE for negative start offset. */ \
1065 env_->get_region_fn(a, -1, 1, nullptr); \
1066 ExpectException(aioobe_); \
1067 env_->set_region_fn(a, -1, 1, nullptr); \
1068 ExpectException(aioobe_); \
1070 /* AIOOBE for negative length. */ \
1071 env_->get_region_fn(a, 0, -1, nullptr); \
1072 ExpectException(aioobe_); \
1073 env_->set_region_fn(a, 0, -1, nullptr); \
1074 ExpectException(aioobe_); \
1076 /* AIOOBE for buffer overrun. */ \
1077 env_->get_region_fn(a, size - 1, size, nullptr); \
1078 ExpectException(aioobe_); \
1079 env_->set_region_fn(a, size - 1, size, nullptr); \
1080 ExpectException(aioobe_); \
1082 /* Regression test against integer overflow in range check. */ \
1083 env_->get_region_fn(a, 0x7fffffff, 0x7fffffff, nullptr); \
1084 ExpectException(aioobe_); \
1085 env_->set_region_fn(a, 0x7fffffff, 0x7fffffff, nullptr); \
1086 ExpectException(aioobe_); \
1088 /* It's okay for the buffer to be null as long as the length is 0. */ \
1089 env_->get_region_fn(a, 2, 0, nullptr); \
1090 /* Even if the offset is invalid... */ \
1091 env_->get_region_fn(a, 123, 0, nullptr); \
1092 ExpectException(aioobe_); \
1094 /* It's okay for the buffer to be null as long as the length is 0. */ \
1095 env_->set_region_fn(a, 2, 0, nullptr); \
1096 /* Even if the offset is invalid... */ \
1097 env_->set_region_fn(a, 123, 0, nullptr); \
1098 ExpectException(aioobe_); \
1100 /* Prepare a couple of buffers. */ \
1101 std::unique_ptr<scalar_type[]> src_buf(new scalar_type[size]); \
1102 std::unique_ptr<scalar_type[]> dst_buf(new scalar_type[size]); \
1103 for (jsize i = 0; i < size; ++i) { src_buf[i] = scalar_type(i); } \
1104 for (jsize i = 0; i < size; ++i) { dst_buf[i] = scalar_type(-1); } \
1106 /* Copy all of src_buf onto the heap. */ \
1107 env_->set_region_fn(a, 0, size, &src_buf[0]); \
1108 /* Copy back only part. */ \
1109 env_->get_region_fn(a, 1, size - 2, &dst_buf[1]); \
1110 EXPECT_NE(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
1111 << "short copy equal"; \
1112 /* Copy the missing pieces. */ \
1113 env_->get_region_fn(a, 0, 1, &dst_buf[0]); \
1114 env_->get_region_fn(a, size - 1, 1, &dst_buf[size - 1]); \
1115 EXPECT_EQ(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
1116 << "fixed copy not equal"; \
1117 /* Copy back the whole array. */ \
1118 env_->get_region_fn(a, 0, size, &dst_buf[0]); \
1119 EXPECT_EQ(memcmp(&src_buf[0], &dst_buf[0], size * sizeof(scalar_type)), 0) \
1120 << "full copy not equal"; \
1121 /* GetPrimitiveArrayCritical */ \
1122 void* v = env_->GetPrimitiveArrayCritical(a, nullptr); \
1123 EXPECT_EQ(memcmp(&src_buf[0], v, size * sizeof(scalar_type)), 0) \
1124 << "GetPrimitiveArrayCritical not equal"; \
1125 env_->ReleasePrimitiveArrayCritical(a, v, 0); \
1126 /* GetXArrayElements */ \
1127 scalar_type* xs = env_->get_elements_fn(a, nullptr); \
1128 EXPECT_EQ(memcmp(&src_buf[0], xs, size * sizeof(scalar_type)), 0) \
1129 << # get_elements_fn " not equal"; \
1130 env_->release_elements_fn(a, xs, 0); \
1132 TEST_F(JniInternalTest, BooleanArrays) {
1133 EXPECT_PRIMITIVE_ARRAY(NewBooleanArray, GetBooleanArrayRegion, SetBooleanArrayRegion,
1134 GetBooleanArrayElements, ReleaseBooleanArrayElements, jboolean, "[Z");
1136 TEST_F(JniInternalTest, ByteArrays) {
1137 EXPECT_PRIMITIVE_ARRAY(NewByteArray, GetByteArrayRegion, SetByteArrayRegion,
1138 GetByteArrayElements, ReleaseByteArrayElements, jbyte, "[B");
1140 TEST_F(JniInternalTest, CharArrays) {
1141 EXPECT_PRIMITIVE_ARRAY(NewCharArray, GetCharArrayRegion, SetCharArrayRegion,
1142 GetCharArrayElements, ReleaseCharArrayElements, jchar, "[C");
1144 TEST_F(JniInternalTest, DoubleArrays) {
1145 EXPECT_PRIMITIVE_ARRAY(NewDoubleArray, GetDoubleArrayRegion, SetDoubleArrayRegion,
1146 GetDoubleArrayElements, ReleaseDoubleArrayElements, jdouble, "[D");
1148 TEST_F(JniInternalTest, FloatArrays) {
1149 EXPECT_PRIMITIVE_ARRAY(NewFloatArray, GetFloatArrayRegion, SetFloatArrayRegion,
1150 GetFloatArrayElements, ReleaseFloatArrayElements, jfloat, "[F");
1152 TEST_F(JniInternalTest, IntArrays) {
1153 EXPECT_PRIMITIVE_ARRAY(NewIntArray, GetIntArrayRegion, SetIntArrayRegion,
1154 GetIntArrayElements, ReleaseIntArrayElements, jint, "[I");
1156 TEST_F(JniInternalTest, LongArrays) {
1157 EXPECT_PRIMITIVE_ARRAY(NewLongArray, GetLongArrayRegion, SetLongArrayRegion,
1158 GetLongArrayElements, ReleaseLongArrayElements, jlong, "[J");
1160 TEST_F(JniInternalTest, ShortArrays) {
1161 EXPECT_PRIMITIVE_ARRAY(NewShortArray, GetShortArrayRegion, SetShortArrayRegion,
1162 GetShortArrayElements, ReleaseShortArrayElements, jshort, "[S");
1165 TEST_F(JniInternalTest, GetPrimitiveArrayElementsOfWrongType) {
1166 GetPrimitiveArrayElementsOfWrongType(false);
1167 GetPrimitiveArrayElementsOfWrongType(true);
1170 TEST_F(JniInternalTest, ReleasePrimitiveArrayElementsOfWrongType) {
1171 ReleasePrimitiveArrayElementsOfWrongType(false);
1172 ReleasePrimitiveArrayElementsOfWrongType(true);
1175 TEST_F(JniInternalTest, GetReleasePrimitiveArrayCriticalOfWrongType) {
1176 GetReleasePrimitiveArrayCriticalOfWrongType(false);
1177 GetReleasePrimitiveArrayCriticalOfWrongType(true);
1180 TEST_F(JniInternalTest, GetPrimitiveArrayRegionElementsOfWrongType) {
1181 GetPrimitiveArrayRegionElementsOfWrongType(false);
1182 GetPrimitiveArrayRegionElementsOfWrongType(true);
1185 TEST_F(JniInternalTest, SetPrimitiveArrayRegionElementsOfWrongType) {
1186 SetPrimitiveArrayRegionElementsOfWrongType(false);
1187 SetPrimitiveArrayRegionElementsOfWrongType(true);
1190 TEST_F(JniInternalTest, NewObjectArray) {
1191 jclass element_class = env_->FindClass("java/lang/String");
1192 ASSERT_NE(element_class, nullptr);
1193 jclass array_class = env_->FindClass("[Ljava/lang/String;");
1194 ASSERT_NE(array_class, nullptr);
1196 jobjectArray a = env_->NewObjectArray(0, element_class, nullptr);
1197 EXPECT_NE(a, nullptr);
1198 EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
1199 EXPECT_EQ(0, env_->GetArrayLength(a));
1201 a = env_->NewObjectArray(1, element_class, nullptr);
1202 EXPECT_NE(a, nullptr);
1203 EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
1204 EXPECT_EQ(1, env_->GetArrayLength(a));
1205 EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 0), nullptr));
1207 // Negative array length checks.
1208 NewObjectArrayBadArguments(false);
1209 NewObjectArrayBadArguments(true);
1212 TEST_F(JniInternalTest, NewObjectArrayWithPrimitiveClasses) {
1213 const char* primitive_descriptors = "VZBSCIJFD";
1214 const char* primitive_names[] = {
1215 "void", "boolean", "byte", "short", "char", "int", "long", "float", "double"
1217 ASSERT_EQ(strlen(primitive_descriptors), arraysize(primitive_names));
1219 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1220 CheckJniAbortCatcher jni_abort_catcher;
1221 for (size_t i = 0; i < strlen(primitive_descriptors); ++i) {
1222 env_->NewObjectArray(0, nullptr, nullptr);
1223 jni_abort_catcher.Check("element_jclass == null");
1224 jclass primitive_class = GetPrimitiveClass(primitive_descriptors[i]);
1225 env_->NewObjectArray(1, primitive_class, nullptr);
1226 std::string error_msg(StringPrintf("not an object type: %s", primitive_names[i]));
1227 jni_abort_catcher.Check(error_msg.c_str());
1229 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1230 for (size_t i = 0; i < strlen(primitive_descriptors); ++i) {
1231 env_->NewObjectArray(0, nullptr, nullptr);
1232 jni_abort_catcher.Check("NewObjectArray received NULL jclass");
1233 jclass primitive_class = GetPrimitiveClass(primitive_descriptors[i]);
1234 env_->NewObjectArray(1, primitive_class, nullptr);
1235 std::string error_msg(StringPrintf("not an object type: %s", primitive_names[i]));
1236 jni_abort_catcher.Check(error_msg.c_str());
1238 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1241 TEST_F(JniInternalTest, NewObjectArrayWithInitialValue) {
1242 jclass element_class = env_->FindClass("java/lang/String");
1243 ASSERT_NE(element_class, nullptr);
1244 jclass array_class = env_->FindClass("[Ljava/lang/String;");
1245 ASSERT_NE(array_class, nullptr);
1247 jstring s = env_->NewStringUTF("poop");
1248 jobjectArray a = env_->NewObjectArray(2, element_class, s);
1249 EXPECT_NE(a, nullptr);
1250 EXPECT_TRUE(env_->IsInstanceOf(a, array_class));
1251 EXPECT_EQ(2, env_->GetArrayLength(a));
1252 EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 0), s));
1253 EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(a, 1), s));
1255 // Attempt to incorrect create an array of strings with initial value of string arrays.
1256 CheckJniAbortCatcher jni_abort_catcher;
1257 env_->NewObjectArray(2, element_class, a);
1258 jni_abort_catcher.Check("cannot assign object of type 'java.lang.String[]' to array with element "
1259 "type of 'java.lang.String'");
1262 TEST_F(JniInternalTest, GetArrayLength) {
1263 // Already tested in NewObjectArray/NewPrimitiveArray except for null.
1264 CheckJniAbortCatcher jni_abort_catcher;
1265 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1266 EXPECT_EQ(0, env_->GetArrayLength(nullptr));
1267 jni_abort_catcher.Check("java_array == null");
1268 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1269 EXPECT_EQ(JNI_ERR, env_->GetArrayLength(nullptr));
1270 jni_abort_catcher.Check("jarray was NULL");
1271 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1274 TEST_F(JniInternalTest, GetObjectClass) {
1275 jclass string_class = env_->FindClass("java/lang/String");
1276 ASSERT_NE(string_class, nullptr);
1277 jclass class_class = env_->FindClass("java/lang/Class");
1278 ASSERT_NE(class_class, nullptr);
1280 jstring s = env_->NewStringUTF("poop");
1281 jclass c = env_->GetObjectClass(s);
1282 ASSERT_TRUE(env_->IsSameObject(string_class, c));
1284 jclass c2 = env_->GetObjectClass(c);
1285 ASSERT_TRUE(env_->IsSameObject(class_class, env_->GetObjectClass(c2)));
1287 // Null as object should fail.
1288 CheckJniAbortCatcher jni_abort_catcher;
1289 EXPECT_EQ(env_->GetObjectClass(nullptr), nullptr);
1290 jni_abort_catcher.Check("java_object == null");
1293 TEST_F(JniInternalTest, GetSuperclass) {
1294 jclass object_class = env_->FindClass("java/lang/Object");
1295 ASSERT_NE(object_class, nullptr);
1296 jclass string_class = env_->FindClass("java/lang/String");
1297 ASSERT_NE(string_class, nullptr);
1298 jclass runnable_interface = env_->FindClass("java/lang/Runnable");
1299 ASSERT_NE(runnable_interface, nullptr);
1300 ASSERT_TRUE(env_->IsSameObject(object_class, env_->GetSuperclass(string_class)));
1301 ASSERT_EQ(env_->GetSuperclass(object_class), nullptr);
1302 ASSERT_EQ(env_->GetSuperclass(runnable_interface), nullptr);
1304 // Null as class should fail.
1305 CheckJniAbortCatcher jni_abort_catcher;
1306 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1307 EXPECT_EQ(env_->GetSuperclass(nullptr), nullptr);
1308 jni_abort_catcher.Check("java_class == null");
1309 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1310 EXPECT_EQ(env_->GetSuperclass(nullptr), nullptr);
1311 jni_abort_catcher.Check("GetSuperclass received NULL jclass");
1312 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1315 TEST_F(JniInternalTest, IsAssignableFrom) {
1316 jclass object_class = env_->FindClass("java/lang/Object");
1317 ASSERT_NE(object_class, nullptr);
1318 jclass string_class = env_->FindClass("java/lang/String");
1319 ASSERT_NE(string_class, nullptr);
1321 // A superclass is assignable from an instance of its
1322 // subclass but not vice versa.
1323 ASSERT_TRUE(env_->IsAssignableFrom(string_class, object_class));
1324 ASSERT_FALSE(env_->IsAssignableFrom(object_class, string_class));
1326 jclass charsequence_interface = env_->FindClass("java/lang/CharSequence");
1327 ASSERT_NE(charsequence_interface, nullptr);
1329 // An interface is assignable from an instance of an implementing
1330 // class but not vice versa.
1331 ASSERT_TRUE(env_->IsAssignableFrom(string_class, charsequence_interface));
1332 ASSERT_FALSE(env_->IsAssignableFrom(charsequence_interface, string_class));
1334 // Check that arrays are covariant.
1335 jclass string_array_class = env_->FindClass("[Ljava/lang/String;");
1336 ASSERT_NE(string_array_class, nullptr);
1337 jclass object_array_class = env_->FindClass("[Ljava/lang/Object;");
1338 ASSERT_NE(object_array_class, nullptr);
1339 ASSERT_TRUE(env_->IsAssignableFrom(string_array_class, object_array_class));
1340 ASSERT_FALSE(env_->IsAssignableFrom(object_array_class, string_array_class));
1342 // Primitive types are tested in 004-JniTest.
1344 // Null as either class should fail.
1345 CheckJniAbortCatcher jni_abort_catcher;
1346 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1347 EXPECT_EQ(env_->IsAssignableFrom(nullptr, string_class), JNI_FALSE);
1348 jni_abort_catcher.Check("java_class1 == null");
1349 EXPECT_EQ(env_->IsAssignableFrom(object_class, nullptr), JNI_FALSE);
1350 jni_abort_catcher.Check("java_class2 == null");
1351 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1352 EXPECT_EQ(env_->IsAssignableFrom(nullptr, string_class), JNI_FALSE);
1353 jni_abort_catcher.Check("IsAssignableFrom received NULL jclass");
1354 EXPECT_EQ(env_->IsAssignableFrom(object_class, nullptr), JNI_FALSE);
1355 jni_abort_catcher.Check("IsAssignableFrom received NULL jclass");
1356 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1359 TEST_F(JniInternalTest, GetObjectRefType) {
1360 jclass local = env_->FindClass("java/lang/Object");
1361 ASSERT_TRUE(local != nullptr);
1362 EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(local));
1364 jobject global = env_->NewGlobalRef(local);
1365 EXPECT_EQ(JNIGlobalRefType, env_->GetObjectRefType(global));
1367 jweak weak_global = env_->NewWeakGlobalRef(local);
1368 EXPECT_EQ(JNIWeakGlobalRefType, env_->GetObjectRefType(weak_global));
1371 CheckJniAbortCatcher jni_abort_catcher;
1372 jobject invalid = reinterpret_cast<jobject>(this);
1373 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(invalid));
1374 jni_abort_catcher.Check("use of invalid jobject");
1377 // TODO: invoke a native method and test that its arguments are considered local references.
1379 // Null as pointer should not fail and return invalid-ref. b/18820997
1380 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(nullptr));
1382 // TODO: Null as reference should return the original type.
1383 // This requires running a GC so a non-null object gets freed.
1386 TEST_F(JniInternalTest, StaleWeakGlobal) {
1387 jclass java_lang_Class = env_->FindClass("java/lang/Class");
1388 ASSERT_NE(java_lang_Class, nullptr);
1389 jobjectArray local_ref = env_->NewObjectArray(1, java_lang_Class, nullptr);
1390 ASSERT_NE(local_ref, nullptr);
1391 jweak weak_global = env_->NewWeakGlobalRef(local_ref);
1392 ASSERT_NE(weak_global, nullptr);
1393 env_->DeleteLocalRef(local_ref);
1394 Runtime::Current()->GetHeap()->CollectGarbage(false); // GC should clear the weak global.
1395 jobject new_global_ref = env_->NewGlobalRef(weak_global);
1396 EXPECT_EQ(new_global_ref, nullptr);
1397 jobject new_local_ref = env_->NewLocalRef(weak_global);
1398 EXPECT_EQ(new_local_ref, nullptr);
1401 TEST_F(JniInternalTest, NewStringUTF) {
1402 EXPECT_EQ(env_->NewStringUTF(nullptr), nullptr);
1405 s = env_->NewStringUTF("");
1406 EXPECT_NE(s, nullptr);
1407 EXPECT_EQ(0, env_->GetStringLength(s));
1408 EXPECT_EQ(0, env_->GetStringUTFLength(s));
1409 s = env_->NewStringUTF("hello");
1410 EXPECT_NE(s, nullptr);
1411 EXPECT_EQ(5, env_->GetStringLength(s));
1412 EXPECT_EQ(5, env_->GetStringUTFLength(s));
1414 // Encoded surrogate pair.
1415 s = env_->NewStringUTF("\xed\xa0\x81\xed\xb0\x80");
1416 EXPECT_NE(s, nullptr);
1417 EXPECT_EQ(2, env_->GetStringLength(s));
1419 // The surrogate pair gets encoded into a 4 byte UTF sequence..
1420 EXPECT_EQ(4, env_->GetStringUTFLength(s));
1421 const char* chars = env_->GetStringUTFChars(s, nullptr);
1422 EXPECT_STREQ("\xf0\x90\x90\x80", chars);
1423 env_->ReleaseStringUTFChars(s, chars);
1425 // .. but is stored as is in the utf-16 representation.
1426 const jchar* jchars = env_->GetStringChars(s, nullptr);
1427 EXPECT_EQ(0xd801, jchars[0]);
1428 EXPECT_EQ(0xdc00, jchars[1]);
1429 env_->ReleaseStringChars(s, jchars);
1431 // 4 byte UTF sequence appended to an encoded surrogate pair.
1432 s = env_->NewStringUTF("\xed\xa0\x81\xed\xb0\x80 \xf0\x9f\x8f\xa0");
1433 EXPECT_NE(s, nullptr);
1435 // The 4 byte sequence {0xf0, 0x9f, 0x8f, 0xa0} is converted into a surrogate
1436 // pair {0xd83c, 0xdfe0}.
1437 EXPECT_EQ(5, env_->GetStringLength(s));
1438 jchars = env_->GetStringChars(s, nullptr);
1439 // The first surrogate pair, encoded as such in the input.
1440 EXPECT_EQ(0xd801, jchars[0]);
1441 EXPECT_EQ(0xdc00, jchars[1]);
1442 // The second surrogate pair, from the 4 byte UTF sequence in the input.
1443 EXPECT_EQ(0xd83c, jchars[3]);
1444 EXPECT_EQ(0xdfe0, jchars[4]);
1445 env_->ReleaseStringChars(s, jchars);
1447 EXPECT_EQ(9, env_->GetStringUTFLength(s));
1448 chars = env_->GetStringUTFChars(s, nullptr);
1449 EXPECT_STREQ("\xf0\x90\x90\x80 \xf0\x9f\x8f\xa0", chars);
1450 env_->ReleaseStringUTFChars(s, chars);
1452 // A string with 1, 2, 3 and 4 byte UTF sequences with spaces
1454 s = env_->NewStringUTF("\x24 \xc2\xa2 \xe2\x82\xac \xf0\x9f\x8f\xa0");
1455 EXPECT_NE(s, nullptr);
1456 EXPECT_EQ(8, env_->GetStringLength(s));
1457 EXPECT_EQ(13, env_->GetStringUTFLength(s));
1460 TEST_F(JniInternalTest, NewString) {
1461 jchar chars[] = { 'h', 'i' };
1463 s = env_->NewString(chars, 0);
1464 EXPECT_NE(s, nullptr);
1465 EXPECT_EQ(0, env_->GetStringLength(s));
1466 EXPECT_EQ(0, env_->GetStringUTFLength(s));
1467 s = env_->NewString(chars, 2);
1468 EXPECT_NE(s, nullptr);
1469 EXPECT_EQ(2, env_->GetStringLength(s));
1470 EXPECT_EQ(2, env_->GetStringUTFLength(s));
1472 // TODO: check some non-ASCII strings.
1475 TEST_F(JniInternalTest, NewStringNullCharsZeroLength) {
1476 jstring s = env_->NewString(nullptr, 0);
1477 EXPECT_NE(s, nullptr);
1478 EXPECT_EQ(0, env_->GetStringLength(s));
1481 TEST_F(JniInternalTest, NewStringNullCharsNonzeroLength) {
1482 CheckJniAbortCatcher jni_abort_catcher;
1483 env_->NewString(nullptr, 1);
1484 jni_abort_catcher.Check("chars == null && char_count > 0");
1487 TEST_F(JniInternalTest, NewStringNegativeLength) {
1488 CheckJniAbortCatcher jni_abort_catcher;
1489 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1490 env_->NewString(nullptr, -1);
1491 jni_abort_catcher.Check("char_count < 0: -1");
1492 env_->NewString(nullptr, std::numeric_limits<jint>::min());
1493 jni_abort_catcher.Check("char_count < 0: -2147483648");
1494 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1495 env_->NewString(nullptr, -1);
1496 jni_abort_catcher.Check("negative jsize: -1");
1497 env_->NewString(nullptr, std::numeric_limits<jint>::min());
1498 jni_abort_catcher.Check("negative jsize: -2147483648");
1499 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1502 TEST_F(JniInternalTest, GetStringLength_GetStringUTFLength) {
1503 // Already tested in the NewString/NewStringUTF tests.
1506 TEST_F(JniInternalTest, GetStringRegion_GetStringUTFRegion) {
1507 jstring s = env_->NewStringUTF("hello");
1508 ASSERT_TRUE(s != nullptr);
1510 env_->GetStringRegion(s, -1, 0, nullptr);
1511 ExpectException(sioobe_);
1512 env_->GetStringRegion(s, 0, -1, nullptr);
1513 ExpectException(sioobe_);
1514 env_->GetStringRegion(s, 0, 10, nullptr);
1515 ExpectException(sioobe_);
1516 env_->GetStringRegion(s, 10, 1, nullptr);
1517 ExpectException(sioobe_);
1518 // Regression test against integer overflow in range check.
1519 env_->GetStringRegion(s, 0x7fffffff, 0x7fffffff, nullptr);
1520 ExpectException(sioobe_);
1522 jchar chars[4] = { 'x', 'x', 'x', 'x' };
1523 env_->GetStringRegion(s, 1, 2, &chars[1]);
1524 EXPECT_EQ('x', chars[0]);
1525 EXPECT_EQ('e', chars[1]);
1526 EXPECT_EQ('l', chars[2]);
1527 EXPECT_EQ('x', chars[3]);
1529 // It's okay for the buffer to be null as long as the length is 0.
1530 env_->GetStringRegion(s, 2, 0, nullptr);
1531 // Even if the offset is invalid...
1532 env_->GetStringRegion(s, 123, 0, nullptr);
1533 ExpectException(sioobe_);
1535 env_->GetStringUTFRegion(s, -1, 0, nullptr);
1536 ExpectException(sioobe_);
1537 env_->GetStringUTFRegion(s, 0, -1, nullptr);
1538 ExpectException(sioobe_);
1539 env_->GetStringUTFRegion(s, 0, 10, nullptr);
1540 ExpectException(sioobe_);
1541 env_->GetStringUTFRegion(s, 10, 1, nullptr);
1542 ExpectException(sioobe_);
1543 // Regression test against integer overflow in range check.
1544 env_->GetStringUTFRegion(s, 0x7fffffff, 0x7fffffff, nullptr);
1545 ExpectException(sioobe_);
1547 char bytes[4] = { 'x', 'x', 'x', 'x' };
1548 env_->GetStringUTFRegion(s, 1, 2, &bytes[1]);
1549 EXPECT_EQ('x', bytes[0]);
1550 EXPECT_EQ('e', bytes[1]);
1551 EXPECT_EQ('l', bytes[2]);
1552 EXPECT_EQ('x', bytes[3]);
1554 // It's okay for the buffer to be null as long as the length is 0.
1555 env_->GetStringUTFRegion(s, 2, 0, nullptr);
1556 // Even if the offset is invalid...
1557 env_->GetStringUTFRegion(s, 123, 0, nullptr);
1558 ExpectException(sioobe_);
1561 TEST_F(JniInternalTest, GetStringUTFChars_ReleaseStringUTFChars) {
1562 // Passing in a null jstring is ignored normally, but caught by -Xcheck:jni.
1563 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1565 CheckJniAbortCatcher check_jni_abort_catcher;
1566 EXPECT_EQ(env_->GetStringUTFChars(nullptr, nullptr), nullptr);
1569 CheckJniAbortCatcher check_jni_abort_catcher;
1570 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1571 EXPECT_EQ(env_->GetStringUTFChars(nullptr, nullptr), nullptr);
1572 check_jni_abort_catcher.Check("GetStringUTFChars received NULL jstring");
1573 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1576 jstring s = env_->NewStringUTF("hello");
1577 ASSERT_TRUE(s != nullptr);
1579 const char* utf = env_->GetStringUTFChars(s, nullptr);
1580 EXPECT_STREQ("hello", utf);
1581 env_->ReleaseStringUTFChars(s, utf);
1583 jboolean is_copy = JNI_FALSE;
1584 utf = env_->GetStringUTFChars(s, &is_copy);
1585 EXPECT_EQ(JNI_TRUE, is_copy);
1586 EXPECT_STREQ("hello", utf);
1587 env_->ReleaseStringUTFChars(s, utf);
1590 TEST_F(JniInternalTest, GetStringChars_ReleaseStringChars) {
1591 jstring s = env_->NewStringUTF("hello");
1592 ScopedObjectAccess soa(env_);
1593 mirror::String* s_m = soa.Decode<mirror::String*>(s);
1594 ASSERT_TRUE(s != nullptr);
1596 jchar expected[] = { 'h', 'e', 'l', 'l', 'o' };
1597 const jchar* chars = env_->GetStringChars(s, nullptr);
1598 EXPECT_EQ(expected[0], chars[0]);
1599 EXPECT_EQ(expected[1], chars[1]);
1600 EXPECT_EQ(expected[2], chars[2]);
1601 EXPECT_EQ(expected[3], chars[3]);
1602 EXPECT_EQ(expected[4], chars[4]);
1603 env_->ReleaseStringChars(s, chars);
1605 jboolean is_copy = JNI_FALSE;
1606 chars = env_->GetStringChars(s, &is_copy);
1607 if (Runtime::Current()->GetHeap()->IsMovableObject(s_m)) {
1608 EXPECT_EQ(JNI_TRUE, is_copy);
1610 EXPECT_EQ(JNI_FALSE, is_copy);
1612 EXPECT_EQ(expected[0], chars[0]);
1613 EXPECT_EQ(expected[1], chars[1]);
1614 EXPECT_EQ(expected[2], chars[2]);
1615 EXPECT_EQ(expected[3], chars[3]);
1616 EXPECT_EQ(expected[4], chars[4]);
1617 env_->ReleaseStringChars(s, chars);
1620 TEST_F(JniInternalTest, GetStringCritical_ReleaseStringCritical) {
1621 jstring s = env_->NewStringUTF("hello");
1622 ASSERT_TRUE(s != nullptr);
1624 jchar expected[] = { 'h', 'e', 'l', 'l', 'o' };
1625 const jchar* chars = env_->GetStringCritical(s, nullptr);
1626 EXPECT_EQ(expected[0], chars[0]);
1627 EXPECT_EQ(expected[1], chars[1]);
1628 EXPECT_EQ(expected[2], chars[2]);
1629 EXPECT_EQ(expected[3], chars[3]);
1630 EXPECT_EQ(expected[4], chars[4]);
1631 env_->ReleaseStringCritical(s, chars);
1633 jboolean is_copy = JNI_TRUE;
1634 chars = env_->GetStringCritical(s, &is_copy);
1635 EXPECT_EQ(JNI_FALSE, is_copy);
1636 EXPECT_EQ(expected[0], chars[0]);
1637 EXPECT_EQ(expected[1], chars[1]);
1638 EXPECT_EQ(expected[2], chars[2]);
1639 EXPECT_EQ(expected[3], chars[3]);
1640 EXPECT_EQ(expected[4], chars[4]);
1641 env_->ReleaseStringCritical(s, chars);
1644 TEST_F(JniInternalTest, GetObjectArrayElement_SetObjectArrayElement) {
1645 jclass java_lang_Class = env_->FindClass("java/lang/Class");
1646 ASSERT_TRUE(java_lang_Class != nullptr);
1648 jobjectArray array = env_->NewObjectArray(1, java_lang_Class, nullptr);
1649 EXPECT_NE(array, nullptr);
1650 EXPECT_EQ(env_->GetObjectArrayElement(array, 0), nullptr);
1651 env_->SetObjectArrayElement(array, 0, java_lang_Class);
1652 EXPECT_TRUE(env_->IsSameObject(env_->GetObjectArrayElement(array, 0), java_lang_Class));
1654 // ArrayIndexOutOfBounds for negative index.
1655 env_->SetObjectArrayElement(array, -1, java_lang_Class);
1656 ExpectException(aioobe_);
1658 // ArrayIndexOutOfBounds for too-large index.
1659 env_->SetObjectArrayElement(array, 1, java_lang_Class);
1660 ExpectException(aioobe_);
1662 // ArrayStoreException thrown for bad types.
1663 env_->SetObjectArrayElement(array, 0, env_->NewStringUTF("not a jclass!"));
1664 ExpectException(ase_);
1666 // Null as array should fail.
1667 CheckJniAbortCatcher jni_abort_catcher;
1668 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1669 EXPECT_EQ(nullptr, env_->GetObjectArrayElement(nullptr, 0));
1670 jni_abort_catcher.Check("java_array == null");
1671 env_->SetObjectArrayElement(nullptr, 0, nullptr);
1672 jni_abort_catcher.Check("java_array == null");
1673 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1674 EXPECT_EQ(nullptr, env_->GetObjectArrayElement(nullptr, 0));
1675 jni_abort_catcher.Check("jarray was NULL");
1676 env_->SetObjectArrayElement(nullptr, 0, nullptr);
1677 jni_abort_catcher.Check("jarray was NULL");
1678 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1681 #define EXPECT_STATIC_PRIMITIVE_FIELD(expect_eq, type, field_name, sig, value1, value2) \
1683 jfieldID fid = env_->GetStaticFieldID(c, field_name, sig); \
1684 EXPECT_NE(fid, nullptr); \
1685 env_->SetStatic ## type ## Field(c, fid, value1); \
1686 expect_eq(value1, env_->GetStatic ## type ## Field(c, fid)); \
1687 env_->SetStatic ## type ## Field(c, fid, value2); \
1688 expect_eq(value2, env_->GetStatic ## type ## Field(c, fid)); \
1690 bool old_check_jni = vm_->SetCheckJniEnabled(false); \
1692 CheckJniAbortCatcher jni_abort_catcher; \
1693 env_->GetStatic ## type ## Field(nullptr, fid); \
1694 env_->SetStatic ## type ## Field(nullptr, fid, value1); \
1696 CheckJniAbortCatcher jni_abort_catcher; \
1697 env_->GetStatic ## type ## Field(c, nullptr); \
1698 jni_abort_catcher.Check("fid == null"); \
1699 env_->SetStatic ## type ## Field(c, nullptr, value1); \
1700 jni_abort_catcher.Check("fid == null"); \
1702 EXPECT_FALSE(vm_->SetCheckJniEnabled(true)); \
1703 env_->GetStatic ## type ## Field(nullptr, fid); \
1704 jni_abort_catcher.Check("received NULL jclass"); \
1705 env_->SetStatic ## type ## Field(nullptr, fid, value1); \
1706 jni_abort_catcher.Check("received NULL jclass"); \
1707 env_->GetStatic ## type ## Field(c, nullptr); \
1708 jni_abort_catcher.Check("jfieldID was NULL"); \
1709 env_->SetStatic ## type ## Field(c, nullptr, value1); \
1710 jni_abort_catcher.Check("jfieldID was NULL"); \
1711 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni)); \
1714 #define EXPECT_PRIMITIVE_FIELD(expect_eq, instance, type, field_name, sig, value1, value2) \
1716 jfieldID fid = env_->GetFieldID(c, field_name, sig); \
1717 EXPECT_NE(fid, nullptr); \
1718 env_->Set ## type ## Field(instance, fid, value1); \
1719 expect_eq(value1, env_->Get ## type ## Field(instance, fid)); \
1720 env_->Set ## type ## Field(instance, fid, value2); \
1721 expect_eq(value2, env_->Get ## type ## Field(instance, fid)); \
1723 bool old_check_jni = vm_->SetCheckJniEnabled(false); \
1724 CheckJniAbortCatcher jni_abort_catcher; \
1725 env_->Get ## type ## Field(nullptr, fid); \
1726 jni_abort_catcher.Check("obj == null"); \
1727 env_->Set ## type ## Field(nullptr, fid, value1); \
1728 jni_abort_catcher.Check("obj == null"); \
1729 env_->Get ## type ## Field(instance, nullptr); \
1730 jni_abort_catcher.Check("fid == null"); \
1731 env_->Set ## type ## Field(instance, nullptr, value1); \
1732 jni_abort_catcher.Check("fid == null"); \
1733 EXPECT_FALSE(vm_->SetCheckJniEnabled(true)); \
1734 env_->Get ## type ## Field(nullptr, fid); \
1735 jni_abort_catcher.Check("field operation on NULL object:"); \
1736 env_->Set ## type ## Field(nullptr, fid, value1); \
1737 jni_abort_catcher.Check("field operation on NULL object:"); \
1738 env_->Get ## type ## Field(instance, nullptr); \
1739 jni_abort_catcher.Check("jfieldID was NULL"); \
1740 env_->Set ## type ## Field(instance, nullptr, value1); \
1741 jni_abort_catcher.Check("jfieldID was NULL"); \
1742 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni)); \
1746 TEST_F(JniInternalTest, GetPrimitiveField_SetPrimitiveField) {
1747 Thread::Current()->TransitionFromSuspendedToRunnable();
1748 LoadDex("AllFields");
1749 bool started = runtime_->Start();
1750 ASSERT_TRUE(started);
1752 jclass c = env_->FindClass("AllFields");
1753 ASSERT_NE(c, nullptr);
1754 jobject o = env_->AllocObject(c);
1755 ASSERT_NE(o, nullptr);
1757 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Boolean, "sZ", "Z", JNI_TRUE, JNI_FALSE);
1758 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Byte, "sB", "B", 1, 2);
1759 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Char, "sC", "C", 'a', 'b');
1760 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_DOUBLE_EQ, Double, "sD", "D", 1.0, 2.0);
1761 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_FLOAT_EQ, Float, "sF", "F", 1.0, 2.0);
1762 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Int, "sI", "I", 1, 2);
1763 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Long, "sJ", "J", 1, 2);
1764 EXPECT_STATIC_PRIMITIVE_FIELD(EXPECT_EQ, Short, "sS", "S", 1, 2);
1766 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Boolean, "iZ", "Z", JNI_TRUE, JNI_FALSE);
1767 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Byte, "iB", "B", 1, 2);
1768 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Char, "iC", "C", 'a', 'b');
1769 EXPECT_PRIMITIVE_FIELD(EXPECT_DOUBLE_EQ, o, Double, "iD", "D", 1.0, 2.0);
1770 EXPECT_PRIMITIVE_FIELD(EXPECT_FLOAT_EQ, o, Float, "iF", "F", 1.0, 2.0);
1771 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Int, "iI", "I", 1, 2);
1772 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Long, "iJ", "J", 1, 2);
1773 EXPECT_PRIMITIVE_FIELD(EXPECT_EQ, o, Short, "iS", "S", 1, 2);
1776 TEST_F(JniInternalTest, GetObjectField_SetObjectField) {
1777 Thread::Current()->TransitionFromSuspendedToRunnable();
1778 LoadDex("AllFields");
1781 jclass c = env_->FindClass("AllFields");
1782 ASSERT_NE(c, nullptr);
1783 jobject o = env_->AllocObject(c);
1784 ASSERT_NE(o, nullptr);
1786 jstring s1 = env_->NewStringUTF("hello");
1787 ASSERT_NE(s1, nullptr);
1788 jstring s2 = env_->NewStringUTF("world");
1789 ASSERT_NE(s2, nullptr);
1791 jfieldID s_fid = env_->GetStaticFieldID(c, "sObject", "Ljava/lang/Object;");
1792 ASSERT_NE(s_fid, nullptr);
1793 jfieldID i_fid = env_->GetFieldID(c, "iObject", "Ljava/lang/Object;");
1794 ASSERT_NE(i_fid, nullptr);
1796 env_->SetStaticObjectField(c, s_fid, s1);
1797 ASSERT_TRUE(env_->IsSameObject(s1, env_->GetStaticObjectField(c, s_fid)));
1798 env_->SetStaticObjectField(c, s_fid, s2);
1799 ASSERT_TRUE(env_->IsSameObject(s2, env_->GetStaticObjectField(c, s_fid)));
1801 env_->SetObjectField(o, i_fid, s1);
1802 ASSERT_TRUE(env_->IsSameObject(s1, env_->GetObjectField(o, i_fid)));
1803 env_->SetObjectField(o, i_fid, s2);
1804 ASSERT_TRUE(env_->IsSameObject(s2, env_->GetObjectField(o, i_fid)));
1807 TEST_F(JniInternalTest, NewLocalRef_nullptr) {
1808 EXPECT_EQ(env_->NewLocalRef(nullptr), nullptr);
1811 TEST_F(JniInternalTest, NewLocalRef) {
1812 jstring s = env_->NewStringUTF("");
1813 ASSERT_NE(s, nullptr);
1814 jobject o = env_->NewLocalRef(s);
1815 EXPECT_NE(o, nullptr);
1818 EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(o));
1821 TEST_F(JniInternalTest, DeleteLocalRef_nullptr) {
1822 env_->DeleteLocalRef(nullptr);
1825 TEST_F(JniInternalTest, DeleteLocalRef) {
1826 // This tests leads to warnings and errors in the log.
1827 ScopedLogSeverity sls(LogSeverity::FATAL);
1829 jstring s = env_->NewStringUTF("");
1830 ASSERT_NE(s, nullptr);
1831 env_->DeleteLocalRef(s);
1833 // Currently, deleting an already-deleted reference is just a CheckJNI warning.
1835 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1837 CheckJniAbortCatcher check_jni_abort_catcher;
1838 env_->DeleteLocalRef(s);
1840 CheckJniAbortCatcher check_jni_abort_catcher;
1841 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1842 env_->DeleteLocalRef(s);
1843 std::string expected(StringPrintf("use of deleted local reference %p", s));
1844 check_jni_abort_catcher.Check(expected.c_str());
1845 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1848 s = env_->NewStringUTF("");
1849 ASSERT_NE(s, nullptr);
1850 jobject o = env_->NewLocalRef(s);
1851 ASSERT_NE(o, nullptr);
1853 env_->DeleteLocalRef(s);
1854 env_->DeleteLocalRef(o);
1857 TEST_F(JniInternalTest, PushLocalFrame_10395422) {
1858 // The JNI specification is ambiguous about whether the given capacity is to be interpreted as a
1859 // maximum or as a minimum, but it seems like it's supposed to be a minimum, and that's how
1860 // Android historically treated it, and it's how the RI treats it. It's also the more useful
1862 ASSERT_EQ(JNI_OK, env_->PushLocalFrame(0));
1863 env_->PopLocalFrame(nullptr);
1865 // The following two tests will print errors to the log.
1866 ScopedLogSeverity sls(LogSeverity::FATAL);
1868 // Negative capacities are not allowed.
1869 ASSERT_EQ(JNI_ERR, env_->PushLocalFrame(-1));
1871 // And it's okay to have an upper limit. Ours is currently 512.
1872 ASSERT_EQ(JNI_ERR, env_->PushLocalFrame(8192));
1875 TEST_F(JniInternalTest, PushLocalFrame_PopLocalFrame) {
1876 // This tests leads to errors in the log.
1877 ScopedLogSeverity sls(LogSeverity::FATAL);
1879 jobject original = env_->NewStringUTF("");
1880 ASSERT_NE(original, nullptr);
1883 jobject inner1, inner2;
1884 ScopedObjectAccess soa(env_);
1886 ASSERT_EQ(JNI_OK, env_->PushLocalFrame(4));
1887 outer = env_->NewLocalRef(original);
1890 ASSERT_EQ(JNI_OK, env_->PushLocalFrame(4));
1891 inner1 = env_->NewLocalRef(outer);
1892 inner2 = env_->NewStringUTF("survivor");
1893 EXPECT_NE(env_->PopLocalFrame(inner2), nullptr);
1896 EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
1897 EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(outer));
1899 CheckJniAbortCatcher check_jni_abort_catcher;
1900 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
1901 check_jni_abort_catcher.Check("use of deleted local reference");
1904 // Our local reference for the survivor is invalid because the survivor
1905 // gets a new local reference...
1907 CheckJniAbortCatcher check_jni_abort_catcher;
1908 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
1909 check_jni_abort_catcher.Check("use of deleted local reference");
1912 EXPECT_EQ(env_->PopLocalFrame(nullptr), nullptr);
1914 EXPECT_EQ(JNILocalRefType, env_->GetObjectRefType(original));
1915 CheckJniAbortCatcher check_jni_abort_catcher;
1916 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(outer));
1917 check_jni_abort_catcher.Check("use of deleted local reference");
1918 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner1));
1919 check_jni_abort_catcher.Check("use of deleted local reference");
1920 EXPECT_EQ(JNIInvalidRefType, env_->GetObjectRefType(inner2));
1921 check_jni_abort_catcher.Check("use of deleted local reference");
1924 TEST_F(JniInternalTest, NewGlobalRef_nullptr) {
1925 EXPECT_EQ(env_->NewGlobalRef(nullptr), nullptr);
1928 TEST_F(JniInternalTest, NewGlobalRef) {
1929 jstring s = env_->NewStringUTF("");
1930 ASSERT_NE(s, nullptr);
1931 jobject o = env_->NewGlobalRef(s);
1932 EXPECT_NE(o, nullptr);
1935 EXPECT_EQ(env_->GetObjectRefType(o), JNIGlobalRefType);
1938 TEST_F(JniInternalTest, DeleteGlobalRef_nullptr) {
1939 env_->DeleteGlobalRef(nullptr);
1942 TEST_F(JniInternalTest, DeleteGlobalRef) {
1943 // This tests leads to warnings and errors in the log.
1944 ScopedLogSeverity sls(LogSeverity::FATAL);
1946 jstring s = env_->NewStringUTF("");
1947 ASSERT_NE(s, nullptr);
1949 jobject o = env_->NewGlobalRef(s);
1950 ASSERT_NE(o, nullptr);
1951 env_->DeleteGlobalRef(o);
1953 // Currently, deleting an already-deleted reference is just a CheckJNI warning.
1955 bool old_check_jni = vm_->SetCheckJniEnabled(false);
1957 CheckJniAbortCatcher check_jni_abort_catcher;
1958 env_->DeleteGlobalRef(o);
1960 CheckJniAbortCatcher check_jni_abort_catcher;
1961 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
1962 env_->DeleteGlobalRef(o);
1963 std::string expected(StringPrintf("use of deleted global reference %p", o));
1964 check_jni_abort_catcher.Check(expected.c_str());
1965 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
1968 jobject o1 = env_->NewGlobalRef(s);
1969 ASSERT_NE(o1, nullptr);
1970 jobject o2 = env_->NewGlobalRef(s);
1971 ASSERT_NE(o2, nullptr);
1973 env_->DeleteGlobalRef(o1);
1974 env_->DeleteGlobalRef(o2);
1977 TEST_F(JniInternalTest, NewWeakGlobalRef_nullptr) {
1978 EXPECT_EQ(env_->NewWeakGlobalRef(nullptr), nullptr);
1981 TEST_F(JniInternalTest, NewWeakGlobalRef) {
1982 jstring s = env_->NewStringUTF("");
1983 ASSERT_NE(s, nullptr);
1984 jobject o = env_->NewWeakGlobalRef(s);
1985 EXPECT_NE(o, nullptr);
1988 EXPECT_EQ(env_->GetObjectRefType(o), JNIWeakGlobalRefType);
1991 TEST_F(JniInternalTest, DeleteWeakGlobalRef_nullptr) {
1992 env_->DeleteWeakGlobalRef(nullptr);
1995 TEST_F(JniInternalTest, DeleteWeakGlobalRef) {
1996 // This tests leads to warnings and errors in the log.
1997 ScopedLogSeverity sls(LogSeverity::FATAL);
1999 jstring s = env_->NewStringUTF("");
2000 ASSERT_NE(s, nullptr);
2002 jobject o = env_->NewWeakGlobalRef(s);
2003 ASSERT_NE(o, nullptr);
2004 env_->DeleteWeakGlobalRef(o);
2006 // Currently, deleting an already-deleted reference is just a CheckJNI warning.
2008 bool old_check_jni = vm_->SetCheckJniEnabled(false);
2010 CheckJniAbortCatcher check_jni_abort_catcher;
2011 env_->DeleteWeakGlobalRef(o);
2013 CheckJniAbortCatcher check_jni_abort_catcher;
2014 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
2015 env_->DeleteWeakGlobalRef(o);
2016 std::string expected(StringPrintf("use of deleted weak global reference %p", o));
2017 check_jni_abort_catcher.Check(expected.c_str());
2018 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
2021 jobject o1 = env_->NewWeakGlobalRef(s);
2022 ASSERT_NE(o1, nullptr);
2023 jobject o2 = env_->NewWeakGlobalRef(s);
2024 ASSERT_NE(o2, nullptr);
2026 env_->DeleteWeakGlobalRef(o1);
2027 env_->DeleteWeakGlobalRef(o2);
2030 TEST_F(JniInternalTest, ExceptionDescribe) {
2031 // This checks how ExceptionDescribe handles call without exception.
2032 env_->ExceptionClear();
2033 env_->ExceptionDescribe();
2036 TEST_F(JniInternalTest, Throw) {
2037 jclass exception_class = env_->FindClass("java/lang/RuntimeException");
2038 ASSERT_TRUE(exception_class != nullptr);
2039 jthrowable exception = reinterpret_cast<jthrowable>(env_->AllocObject(exception_class));
2040 ASSERT_TRUE(exception != nullptr);
2042 EXPECT_EQ(JNI_OK, env_->Throw(exception));
2043 EXPECT_TRUE(env_->ExceptionCheck());
2044 jthrowable thrown_exception = env_->ExceptionOccurred();
2045 env_->ExceptionClear();
2046 EXPECT_TRUE(env_->IsSameObject(exception, thrown_exception));
2049 bool old_check_jni = vm_->SetCheckJniEnabled(false);
2050 EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
2051 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
2052 CheckJniAbortCatcher check_jni_abort_catcher;
2053 EXPECT_EQ(JNI_ERR, env_->Throw(nullptr));
2054 check_jni_abort_catcher.Check("Throw received NULL jthrowable");
2055 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
2058 TEST_F(JniInternalTest, ThrowNew) {
2059 jclass exception_class = env_->FindClass("java/lang/RuntimeException");
2060 ASSERT_TRUE(exception_class != nullptr);
2062 jthrowable thrown_exception;
2064 EXPECT_EQ(JNI_OK, env_->ThrowNew(exception_class, "hello world"));
2065 EXPECT_TRUE(env_->ExceptionCheck());
2066 thrown_exception = env_->ExceptionOccurred();
2067 env_->ExceptionClear();
2068 EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, exception_class));
2070 EXPECT_EQ(JNI_OK, env_->ThrowNew(exception_class, nullptr));
2071 EXPECT_TRUE(env_->ExceptionCheck());
2072 thrown_exception = env_->ExceptionOccurred();
2073 env_->ExceptionClear();
2074 EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, exception_class));
2077 bool old_check_jni = vm_->SetCheckJniEnabled(false);
2078 CheckJniAbortCatcher check_jni_abort_catcher;
2079 EXPECT_EQ(JNI_ERR, env_->ThrowNew(nullptr, nullptr));
2080 check_jni_abort_catcher.Check("c == null");
2081 EXPECT_FALSE(vm_->SetCheckJniEnabled(true));
2082 EXPECT_EQ(JNI_ERR, env_->ThrowNew(nullptr, nullptr));
2083 check_jni_abort_catcher.Check("ThrowNew received NULL jclass");
2084 EXPECT_TRUE(vm_->SetCheckJniEnabled(old_check_jni));
2087 TEST_F(JniInternalTest, NewDirectBuffer_GetDirectBufferAddress_GetDirectBufferCapacity) {
2089 Thread* self = Thread::Current();
2090 self->TransitionFromSuspendedToRunnable();
2091 MakeExecutable(nullptr, "java.lang.Class");
2092 MakeExecutable(nullptr, "java.lang.Object");
2093 MakeExecutable(nullptr, "java.nio.DirectByteBuffer");
2094 MakeExecutable(nullptr, "java.nio.Bits");
2095 MakeExecutable(nullptr, "java.nio.MappedByteBuffer");
2096 MakeExecutable(nullptr, "java.nio.ByteBuffer");
2097 MakeExecutable(nullptr, "java.nio.Buffer");
2098 // TODO: we only load a dex file here as starting the runtime relies upon it.
2099 const char* class_name = "StaticLeafMethods";
2100 LoadDex(class_name);
2101 bool started = runtime_->Start();
2102 ASSERT_TRUE(started);
2104 jclass buffer_class = env_->FindClass("java/nio/Buffer");
2105 ASSERT_NE(buffer_class, nullptr);
2108 jobject buffer = env_->NewDirectByteBuffer(bytes, sizeof(bytes));
2109 ASSERT_NE(buffer, nullptr);
2110 ASSERT_TRUE(env_->IsInstanceOf(buffer, buffer_class));
2111 ASSERT_EQ(env_->GetDirectBufferAddress(buffer), bytes);
2112 ASSERT_EQ(env_->GetDirectBufferCapacity(buffer), static_cast<jlong>(sizeof(bytes)));
2115 CheckJniAbortCatcher check_jni_abort_catcher;
2116 env_->NewDirectByteBuffer(bytes, static_cast<jlong>(INT_MAX) + 1);
2117 check_jni_abort_catcher.Check("in call to NewDirectByteBuffer");
2121 TEST_F(JniInternalTest, MonitorEnterExit) {
2122 // This will print some error messages. Suppress.
2123 ScopedLogSeverity sls(LogSeverity::FATAL);
2125 // Create an object to torture.
2126 jclass object_class = env_->FindClass("java/lang/Object");
2127 ASSERT_NE(object_class, nullptr);
2128 jobject object = env_->AllocObject(object_class);
2129 ASSERT_NE(object, nullptr);
2131 // Expected class of exceptions
2132 jclass imse_class = env_->FindClass("java/lang/IllegalMonitorStateException");
2133 ASSERT_NE(imse_class, nullptr);
2135 jthrowable thrown_exception;
2137 // Unlock of unowned monitor
2138 env_->MonitorExit(object);
2139 EXPECT_TRUE(env_->ExceptionCheck());
2140 thrown_exception = env_->ExceptionOccurred();
2141 env_->ExceptionClear();
2142 EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, imse_class));
2144 // Lock of unowned monitor
2145 env_->MonitorEnter(object);
2146 EXPECT_FALSE(env_->ExceptionCheck());
2148 env_->MonitorExit(object);
2149 EXPECT_FALSE(env_->ExceptionCheck());
2151 // Recursively lock a lot
2152 size_t max_recursive_lock = 1024;
2153 for (size_t i = 0; i < max_recursive_lock; i++) {
2154 env_->MonitorEnter(object);
2155 EXPECT_FALSE(env_->ExceptionCheck());
2157 // Recursively unlock a lot
2158 for (size_t i = 0; i < max_recursive_lock; i++) {
2159 env_->MonitorExit(object);
2160 EXPECT_FALSE(env_->ExceptionCheck());
2163 // Unlock of unowned monitor
2164 env_->MonitorExit(object);
2165 EXPECT_TRUE(env_->ExceptionCheck());
2166 thrown_exception = env_->ExceptionOccurred();
2167 env_->ExceptionClear();
2168 EXPECT_TRUE(env_->IsInstanceOf(thrown_exception, imse_class));
2170 // It's an error to call MonitorEnter or MonitorExit on null.
2172 CheckJniAbortCatcher check_jni_abort_catcher;
2173 env_->MonitorEnter(nullptr);
2174 check_jni_abort_catcher.Check("in call to MonitorEnter");
2175 env_->MonitorExit(nullptr);
2176 check_jni_abort_catcher.Check("in call to MonitorExit");
2180 void Java_MyClassNatives_foo_exit(JNIEnv* env, jobject thisObj) {
2181 // Release the monitor on self. This should trigger an abort.
2182 env->MonitorExit(thisObj);
2185 TEST_F(JniInternalTest, MonitorExitLockedInDifferentCall) {
2186 SetUpForTest(false, "foo", "()V", reinterpret_cast<void*>(&Java_MyClassNatives_foo_exit));
2187 ASSERT_NE(jobj_, nullptr);
2189 env_->MonitorEnter(jobj_);
2190 EXPECT_FALSE(env_->ExceptionCheck());
2192 CheckJniAbortCatcher check_jni_abort_catcher;
2193 env_->CallNonvirtualVoidMethod(jobj_, jklass_, jmethod_);
2194 check_jni_abort_catcher.Check("Unlocking monitor that wasn't locked here");
2197 void Java_MyClassNatives_foo_enter_no_exit(JNIEnv* env, jobject thisObj) {
2198 // Acquire but don't release the monitor on self. This should trigger an abort on return.
2199 env->MonitorEnter(thisObj);
2202 TEST_F(JniInternalTest, MonitorExitNotAllUnlocked) {
2206 reinterpret_cast<void*>(&Java_MyClassNatives_foo_enter_no_exit));
2207 ASSERT_NE(jobj_, nullptr);
2209 CheckJniAbortCatcher check_jni_abort_catcher;
2210 env_->CallNonvirtualVoidMethod(jobj_, jklass_, jmethod_);
2211 check_jni_abort_catcher.Check("Still holding a locked object on JNI end");
2214 static bool IsLocked(JNIEnv* env, jobject jobj) {
2215 ScopedObjectAccess soa(env);
2216 LockWord lock_word = soa.Decode<mirror::Object*>(jobj)->GetLockWord(true);
2217 switch (lock_word.GetState()) {
2218 case LockWord::kHashCode:
2219 case LockWord::kUnlocked:
2221 case LockWord::kThinLocked:
2223 case LockWord::kFatLocked:
2224 return lock_word.FatLockMonitor()->IsLocked();
2226 LOG(FATAL) << "Invalid monitor state " << lock_word.GetState();
2232 TEST_F(JniInternalTest, DetachThreadUnlockJNIMonitors) {
2233 // We need to lock an object, detach, reattach, and check the locks.
2235 // As re-attaching will create a different thread, we need to use a global
2236 // ref to keep the object around.
2238 // Create an object to torture.
2241 jclass object_class = env_->FindClass("java/lang/Object");
2242 ASSERT_NE(object_class, nullptr);
2243 jobject object = env_->AllocObject(object_class);
2244 ASSERT_NE(object, nullptr);
2245 global_ref = env_->NewGlobalRef(object);
2249 env_->MonitorEnter(global_ref);
2250 ASSERT_TRUE(IsLocked(env_, global_ref));
2252 // Detach and re-attach.
2253 jint detach_result = vm_->DetachCurrentThread();
2254 ASSERT_EQ(detach_result, JNI_OK);
2255 jint attach_result = vm_->AttachCurrentThread(&env_, nullptr);
2256 ASSERT_EQ(attach_result, JNI_OK);
2258 // Look at the global ref, check whether it's still locked.
2259 ASSERT_FALSE(IsLocked(env_, global_ref));
2261 // Delete the global ref.
2262 env_->DeleteGlobalRef(global_ref);
2265 // Test the offset computation of IndirectReferenceTable offsets. b/26071368.
2266 TEST_F(JniInternalTest, IndirectReferenceTableOffsets) {
2267 // The segment_state_ field is private, and we want to avoid friend declaration. So we'll check
2268 // by modifying memory.
2269 // The parameters don't really matter here.
2270 IndirectReferenceTable irt(5, 5, IndirectRefKind::kGlobal, true);
2271 uint32_t old_state = irt.GetSegmentState();
2273 // Write some new state directly. We invert parts of old_state to ensure a new value.
2274 uint32_t new_state = old_state ^ 0x07705005;
2275 ASSERT_NE(old_state, new_state);
2277 uint8_t* base = reinterpret_cast<uint8_t*>(&irt);
2278 int32_t segment_state_offset =
2279 IndirectReferenceTable::SegmentStateOffset(sizeof(void*)).Int32Value();
2280 *reinterpret_cast<uint32_t*>(base + segment_state_offset) = new_state;
2282 // Read and compare.
2283 EXPECT_EQ(new_state, irt.GetSegmentState());
2286 // Test the offset computation of JNIEnvExt offsets. b/26071368.
2287 TEST_F(JniInternalTest, JNIEnvExtOffsets) {
2288 EXPECT_EQ(OFFSETOF_MEMBER(JNIEnvExt, local_ref_cookie),
2289 JNIEnvExt::LocalRefCookieOffset(sizeof(void*)).Uint32Value());
2291 EXPECT_EQ(OFFSETOF_MEMBER(JNIEnvExt, self), JNIEnvExt::SelfOffset(sizeof(void*)).Uint32Value());
2293 // segment_state_ is private in the IndirectReferenceTable. So this test isn't as good as we'd
2295 uint32_t segment_state_now =
2296 OFFSETOF_MEMBER(JNIEnvExt, locals) +
2297 IndirectReferenceTable::SegmentStateOffset(sizeof(void*)).Uint32Value();
2298 uint32_t segment_state_computed = JNIEnvExt::SegmentStateOffset(sizeof(void*)).Uint32Value();
2299 EXPECT_EQ(segment_state_now, segment_state_computed);