1 /*
2 * Copyright (C) 2011 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 "object.h"
18
19 #include <stdint.h>
20 #include <stdio.h>
21 #include <memory>
22
23 #include "array-alloc-inl.h"
24 #include "array-inl.h"
25 #include "art_field-inl.h"
26 #include "art_method-inl.h"
27 #include "asm_support.h"
28 #include "base/pointer_size.h"
29 #include "class-alloc-inl.h"
30 #include "class-inl.h"
31 #include "class_linker-inl.h"
32 #include "class_linker.h"
33 #include "class_root-inl.h"
34 #include "common_runtime_test.h"
35 #include "dex/dex_file.h"
36 #include "entrypoints/entrypoint_utils-inl.h"
37 #include "gc/accounting/card_table-inl.h"
38 #include "gc/heap.h"
39 #include "handle_scope-inl.h"
40 #include "iftable-inl.h"
41 #include "obj_ptr.h"
42 #include "object-inl.h"
43 #include "object_array-alloc-inl.h"
44 #include "object_array-inl.h"
45 #include "scoped_thread_state_change-inl.h"
46 #include "string-inl.h"
47
48 namespace art HIDDEN {
49 namespace mirror {
50
51 class ObjectTest : public CommonRuntimeTest {
52 protected:
ObjectTest()53 ObjectTest() {
54 use_boot_image_ = true; // Make the Runtime creation cheaper.
55 }
56
AssertString(int32_t expected_utf16_length,const char * utf8_in,const char * utf16_expected_le,int32_t expected_hash)57 void AssertString(int32_t expected_utf16_length,
58 const char* utf8_in,
59 const char* utf16_expected_le,
60 int32_t expected_hash)
61 REQUIRES_SHARED(Locks::mutator_lock_) {
62 std::unique_ptr<uint16_t[]> utf16_expected(new uint16_t[expected_utf16_length]);
63 for (int32_t i = 0; i < expected_utf16_length; i++) {
64 uint16_t ch = (((utf16_expected_le[i*2 + 0] & 0xff) << 8) |
65 ((utf16_expected_le[i*2 + 1] & 0xff) << 0));
66 utf16_expected[i] = ch;
67 }
68
69 Thread* self = Thread::Current();
70 StackHandleScope<1> hs(self);
71 Handle<String> string(
72 hs.NewHandle(String::AllocFromModifiedUtf8(self, expected_utf16_length, utf8_in)));
73 ASSERT_EQ(expected_utf16_length, string->GetLength());
74 ASSERT_EQ(string->IsValueNull(), false);
75 // strlen is necessary because the 1-character string "\x00\x00" is interpreted as ""
76 ASSERT_TRUE(string->Equals(utf8_in) || (expected_utf16_length == 1 && strlen(utf8_in) == 0));
77 for (int32_t i = 0; i < expected_utf16_length; i++) {
78 EXPECT_EQ(utf16_expected[i], string->CharAt(i));
79 }
80 EXPECT_EQ(expected_hash, string->GetHashCode());
81 }
82
83 template <class T>
AllocObjectArray(Thread * self,size_t length)84 ObjPtr<mirror::ObjectArray<T>> AllocObjectArray(Thread* self, size_t length)
85 REQUIRES_SHARED(Locks::mutator_lock_) {
86 return mirror::ObjectArray<T>::Alloc(
87 self, GetClassRoot(ClassRoot::kObjectArrayClass, class_linker_), length);
88 }
89 };
90
91 // Keep constants in sync.
TEST_F(ObjectTest,Constants)92 TEST_F(ObjectTest, Constants) {
93 EXPECT_EQ(kObjectReferenceSize, sizeof(HeapReference<Object>));
94 EXPECT_EQ(kObjectHeaderSize, sizeof(Object));
95 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_32,
96 ArtMethod::EntryPointFromQuickCompiledCodeOffset(PointerSize::k32).
97 Int32Value());
98 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_64,
99 ArtMethod::EntryPointFromQuickCompiledCodeOffset(PointerSize::k64).
100 Int32Value());
101 }
102
TEST_F(ObjectTest,IsInSamePackage)103 TEST_F(ObjectTest, IsInSamePackage) {
104 // Matches
105 EXPECT_TRUE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/Class;"));
106 EXPECT_TRUE(Class::IsInSamePackage("LFoo;", "LBar;"));
107
108 // Mismatches
109 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/io/File;"));
110 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/reflect/Method;"));
111 }
112
TEST_F(ObjectTest,Clone)113 TEST_F(ObjectTest, Clone) {
114 ScopedObjectAccess soa(Thread::Current());
115 StackHandleScope<2> hs(soa.Self());
116 Handle<ObjectArray<Object>> a1(hs.NewHandle(AllocObjectArray<Object>(soa.Self(), 256)));
117 size_t s1 = a1->SizeOf();
118 ObjPtr<Object> clone = Object::Clone(a1, soa.Self());
119 EXPECT_EQ(s1, clone->SizeOf());
120 EXPECT_TRUE(clone->GetClass() == a1->GetClass());
121 }
122
TEST_F(ObjectTest,AllocObjectArray)123 TEST_F(ObjectTest, AllocObjectArray) {
124 ScopedObjectAccess soa(Thread::Current());
125 StackHandleScope<3> hs(soa.Self());
126 Handle<ObjectArray<Object>> oa(hs.NewHandle(AllocObjectArray<Object>(soa.Self(), 2)));
127 EXPECT_EQ(2, oa->GetLength());
128 EXPECT_TRUE(oa->Get(0) == nullptr);
129 EXPECT_TRUE(oa->Get(1) == nullptr);
130 oa->Set<false>(0, oa.Get());
131 EXPECT_TRUE(oa->Get(0) == oa.Get());
132 EXPECT_TRUE(oa->Get(1) == nullptr);
133 oa->Set<false>(1, oa.Get());
134 EXPECT_TRUE(oa->Get(0) == oa.Get());
135 EXPECT_TRUE(oa->Get(1) == oa.Get());
136
137 Handle<Class> aioobe = hs.NewHandle(
138 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
139
140 EXPECT_TRUE(oa->Get(-1) == nullptr);
141 EXPECT_TRUE(soa.Self()->IsExceptionPending());
142 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
143 soa.Self()->ClearException();
144
145 EXPECT_TRUE(oa->Get(2) == nullptr);
146 EXPECT_TRUE(soa.Self()->IsExceptionPending());
147 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
148 soa.Self()->ClearException();
149
150 ASSERT_TRUE(oa->GetClass() != nullptr);
151 Handle<mirror::Class> klass(hs.NewHandle(oa->GetClass()));
152 ASSERT_EQ(2U, klass->NumDirectInterfaces());
153 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;"),
154 klass->GetDirectInterface(0));
155 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"),
156 klass->GetDirectInterface(1));
157 }
158
TEST_F(ObjectTest,AllocArray)159 TEST_F(ObjectTest, AllocArray) {
160 ScopedObjectAccess soa(Thread::Current());
161 StackHandleScope<2> hs(soa.Self());
162 MutableHandle<Class> c = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
163 gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
164 MutableHandle<Array> a = hs.NewHandle(
165 Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
166 EXPECT_TRUE(c.Get() == a->GetClass());
167 EXPECT_EQ(1, a->GetLength());
168
169 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
170 a.Assign(Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
171 EXPECT_TRUE(c.Get() == a->GetClass());
172 EXPECT_EQ(1, a->GetLength());
173
174 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
175 a.Assign(Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
176 EXPECT_TRUE(c.Get() == a->GetClass());
177 EXPECT_EQ(1, a->GetLength());
178 }
179
TEST_F(ObjectTest,AllocArray_FillUsable)180 TEST_F(ObjectTest, AllocArray_FillUsable) {
181 ScopedObjectAccess soa(Thread::Current());
182 StackHandleScope<2> hs(soa.Self());
183 MutableHandle<Class> c = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[B"));
184 gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
185 MutableHandle<Array> a = hs.NewHandle(
186 Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
187 soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
188 EXPECT_TRUE(c.Get() == a->GetClass());
189 EXPECT_LE(1, a->GetLength());
190
191 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[I"));
192 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
193 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
194 EXPECT_TRUE(c.Get() == a->GetClass());
195 EXPECT_LE(2, a->GetLength());
196
197 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
198 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
199 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
200 EXPECT_TRUE(c.Get() == a->GetClass());
201 EXPECT_LE(2, a->GetLength());
202
203 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
204 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
205 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
206 EXPECT_TRUE(c.Get() == a->GetClass());
207 EXPECT_LE(2, a->GetLength());
208 }
209
210 template<typename ArrayT>
TestPrimitiveArray(ClassLinker * cl)211 void TestPrimitiveArray(ClassLinker* cl) {
212 ScopedObjectAccess soa(Thread::Current());
213 using T = typename ArrayT::ElementType;
214
215 StackHandleScope<2> hs(soa.Self());
216 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
217 EXPECT_EQ(2, a->GetLength());
218 EXPECT_EQ(0, a->Get(0));
219 EXPECT_EQ(0, a->Get(1));
220 a->Set(0, T(123));
221 EXPECT_EQ(T(123), a->Get(0));
222 EXPECT_EQ(0, a->Get(1));
223 a->Set(1, T(321));
224 EXPECT_EQ(T(123), a->Get(0));
225 EXPECT_EQ(T(321), a->Get(1));
226
227 Handle<Class> aioobe = hs.NewHandle(
228 cl->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
229
230 EXPECT_EQ(0, a->Get(-1));
231 EXPECT_TRUE(soa.Self()->IsExceptionPending());
232 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
233 soa.Self()->ClearException();
234
235 EXPECT_EQ(0, a->Get(2));
236 EXPECT_TRUE(soa.Self()->IsExceptionPending());
237 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
238 soa.Self()->ClearException();
239 }
240
TEST_F(ObjectTest,PrimitiveArray_Boolean_Alloc)241 TEST_F(ObjectTest, PrimitiveArray_Boolean_Alloc) {
242 TestPrimitiveArray<BooleanArray>(class_linker_);
243 }
TEST_F(ObjectTest,PrimitiveArray_Byte_Alloc)244 TEST_F(ObjectTest, PrimitiveArray_Byte_Alloc) {
245 TestPrimitiveArray<ByteArray>(class_linker_);
246 }
TEST_F(ObjectTest,PrimitiveArray_Char_Alloc)247 TEST_F(ObjectTest, PrimitiveArray_Char_Alloc) {
248 TestPrimitiveArray<CharArray>(class_linker_);
249 }
TEST_F(ObjectTest,PrimitiveArray_Int_Alloc)250 TEST_F(ObjectTest, PrimitiveArray_Int_Alloc) {
251 TestPrimitiveArray<IntArray>(class_linker_);
252 }
TEST_F(ObjectTest,PrimitiveArray_Long_Alloc)253 TEST_F(ObjectTest, PrimitiveArray_Long_Alloc) {
254 TestPrimitiveArray<LongArray>(class_linker_);
255 }
TEST_F(ObjectTest,PrimitiveArray_Short_Alloc)256 TEST_F(ObjectTest, PrimitiveArray_Short_Alloc) {
257 TestPrimitiveArray<ShortArray>(class_linker_);
258 }
259
TEST_F(ObjectTest,PointerArrayWriteRead)260 TEST_F(ObjectTest, PointerArrayWriteRead) {
261 ScopedObjectAccess soa(Thread::Current());
262 StackHandleScope<2> hs(soa.Self());
263
264 Handle<PointerArray> a32 =
265 hs.NewHandle(ObjPtr<PointerArray>::DownCast<Array>(IntArray::Alloc(soa.Self(), 1)));
266 ASSERT_TRUE(a32 != nullptr);
267 ASSERT_EQ(1, a32->GetLength());
268 EXPECT_EQ(0u, (a32->GetElementPtrSize<uint32_t, PointerSize::k32>(0u)));
269 EXPECT_EQ(0u, (a32->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k32>(0u)));
270 for (uint32_t value : { 0u, 1u, 0x7fffffffu, 0x80000000u, 0xffffffffu }) {
271 a32->SetElementPtrSize(0u, value, PointerSize::k32);
272 EXPECT_EQ(value, (a32->GetElementPtrSize<uint32_t, PointerSize::k32>(0u)));
273 EXPECT_EQ(value, (a32->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k32>(0u)));
274 // Check that the value matches also when retrieved as `uint64_t`.
275 // This is a regression test for unintended sign-extension. b/155780442
276 // (Using `uint64_t` rather than `uintptr_t`, so that the 32-bit test checks this too.)
277 EXPECT_EQ(value, (a32->GetElementPtrSize<uint64_t, PointerSize::k32>(0u)));
278 EXPECT_EQ(value, (a32->GetElementPtrSizeUnchecked<uint64_t, PointerSize::k32>(0u)));
279 }
280
281 Handle<PointerArray> a64 =
282 hs.NewHandle(ObjPtr<PointerArray>::DownCast<Array>(LongArray::Alloc(soa.Self(), 1)));
283 ASSERT_TRUE(a64 != nullptr);
284 ASSERT_EQ(1, a64->GetLength());
285 EXPECT_EQ(0u, (a64->GetElementPtrSize<uint32_t, PointerSize::k64>(0u)));
286 EXPECT_EQ(0u, (a64->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k64>(0u)));
287 for (uint64_t value : { UINT64_C(0),
288 UINT64_C(1),
289 UINT64_C(0x7fffffff),
290 UINT64_C(0x80000000),
291 UINT64_C(0xffffffff),
292 UINT64_C(0x100000000),
293 UINT64_C(0x7fffffffffffffff),
294 UINT64_C(0x8000000000000000),
295 UINT64_C(0xffffffffffffffff) }) {
296 a64->SetElementPtrSize(0u, value, PointerSize::k64);
297 EXPECT_EQ(value, (a64->GetElementPtrSize<uint64_t, PointerSize::k64>(0u)));
298 EXPECT_EQ(value, (a64->GetElementPtrSizeUnchecked<uint64_t, PointerSize::k64>(0u)));
299 }
300 }
301
TEST_F(ObjectTest,PrimitiveArray_Double_Alloc)302 TEST_F(ObjectTest, PrimitiveArray_Double_Alloc) {
303 using ArrayT = DoubleArray;
304 ScopedObjectAccess soa(Thread::Current());
305 using T = typename ArrayT::ElementType;
306
307 StackHandleScope<2> hs(soa.Self());
308 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
309 EXPECT_EQ(2, a->GetLength());
310 EXPECT_DOUBLE_EQ(0, a->Get(0));
311 EXPECT_DOUBLE_EQ(0, a->Get(1));
312 a->Set(0, T(123));
313 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
314 EXPECT_DOUBLE_EQ(0, a->Get(1));
315 a->Set(1, T(321));
316 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
317 EXPECT_DOUBLE_EQ(T(321), a->Get(1));
318
319 Handle<Class> aioobe = hs.NewHandle(
320 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
321
322 EXPECT_DOUBLE_EQ(0, a->Get(-1));
323 EXPECT_TRUE(soa.Self()->IsExceptionPending());
324 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
325 soa.Self()->ClearException();
326
327 EXPECT_DOUBLE_EQ(0, a->Get(2));
328 EXPECT_TRUE(soa.Self()->IsExceptionPending());
329 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
330 soa.Self()->ClearException();
331 }
332
TEST_F(ObjectTest,PrimitiveArray_Float_Alloc)333 TEST_F(ObjectTest, PrimitiveArray_Float_Alloc) {
334 using ArrayT = FloatArray;
335 ScopedObjectAccess soa(Thread::Current());
336 using T = typename ArrayT::ElementType;
337
338 StackHandleScope<2> hs(soa.Self());
339 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
340 EXPECT_FLOAT_EQ(2, a->GetLength());
341 EXPECT_FLOAT_EQ(0, a->Get(0));
342 EXPECT_FLOAT_EQ(0, a->Get(1));
343 a->Set(0, T(123));
344 EXPECT_FLOAT_EQ(T(123), a->Get(0));
345 EXPECT_FLOAT_EQ(0, a->Get(1));
346 a->Set(1, T(321));
347 EXPECT_FLOAT_EQ(T(123), a->Get(0));
348 EXPECT_FLOAT_EQ(T(321), a->Get(1));
349
350 Handle<Class> aioobe = hs.NewHandle(
351 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
352
353 EXPECT_FLOAT_EQ(0, a->Get(-1));
354 EXPECT_TRUE(soa.Self()->IsExceptionPending());
355 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
356 soa.Self()->ClearException();
357
358 EXPECT_FLOAT_EQ(0, a->Get(2));
359 EXPECT_TRUE(soa.Self()->IsExceptionPending());
360 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
361 soa.Self()->ClearException();
362 }
363
364
TEST_F(ObjectTest,CreateMultiArray)365 TEST_F(ObjectTest, CreateMultiArray) {
366 ScopedObjectAccess soa(Thread::Current());
367
368 StackHandleScope<4> hs(soa.Self());
369 Handle<Class> int_class(hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "I")));
370 Handle<Class> int_array_class = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
371 MutableHandle<IntArray> dims(hs.NewHandle(IntArray::Alloc(soa.Self(), 1)));
372 dims->Set<false>(0, 1);
373 MutableHandle<Array> multi = hs.NewHandle(Array::CreateMultiArray(soa.Self(), int_class, dims));
374 EXPECT_OBJ_PTR_EQ(int_array_class.Get(), multi->GetClass());
375 EXPECT_EQ(1, multi->GetLength());
376
377 dims->Set<false>(0, -1);
378 multi.Assign(Array::CreateMultiArray(soa.Self(), int_class, dims));
379 EXPECT_TRUE(soa.Self()->IsExceptionPending());
380 EXPECT_EQ(mirror::Class::PrettyDescriptor(soa.Self()->GetException()->GetClass()),
381 "java.lang.NegativeArraySizeException");
382 soa.Self()->ClearException();
383
384 dims.Assign(IntArray::Alloc(soa.Self(), 2));
385 for (int i = 1; i < 20; ++i) {
386 for (int j = 0; j < 20; ++j) {
387 dims->Set<false>(0, i);
388 dims->Set<false>(1, j);
389 multi.Assign(Array::CreateMultiArray(soa.Self(), int_class, dims));
390 ObjPtr<mirror::Class> expected_class = class_linker_->FindSystemClass(soa.Self(), "[[I");
391 EXPECT_OBJ_PTR_EQ(multi->GetClass(), expected_class);
392 EXPECT_EQ(i, multi->GetLength());
393 for (int k = 0; k < i; ++k) {
394 ObjPtr<Array> outer = multi->AsObjectArray<Array>()->Get(k);
395 EXPECT_OBJ_PTR_EQ(int_array_class.Get(), outer->GetClass());
396 EXPECT_EQ(j, outer->GetLength());
397 }
398 }
399 }
400 }
401
TEST_F(ObjectTest,StaticFieldFromCode)402 TEST_F(ObjectTest, StaticFieldFromCode) {
403 // pretend we are trying to access 'Static.s0' from StaticsFromCode.<clinit>
404 ScopedObjectAccess soa(Thread::Current());
405 jobject class_loader = LoadDex("StaticsFromCode");
406 const DexFile* dex_file = GetFirstDexFile(class_loader);
407
408 StackHandleScope<3> hs(soa.Self());
409 Handle<mirror::ClassLoader> loader(hs.NewHandle(soa.Decode<ClassLoader>(class_loader)));
410 Handle<Class> klass = hs.NewHandle(FindClass("LStaticsFromCode;", loader));
411 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
412 const dex::TypeId* klass_type_id = dex_file->FindTypeId("LStaticsFromCode;");
413 ASSERT_TRUE(klass_type_id != nullptr);
414
415 const dex::TypeId* type_type_id = dex_file->FindTypeId("Ljava/lang/Object;");
416 ASSERT_TRUE(type_type_id != nullptr);
417
418 const dex::StringId* name_str_id = dex_file->FindStringId("s0");
419 ASSERT_TRUE(name_str_id != nullptr);
420
421 const dex::FieldId* field_id = dex_file->FindFieldId(
422 *klass_type_id, *name_str_id, *type_type_id);
423 ASSERT_TRUE(field_id != nullptr);
424 uint32_t field_idx = dex_file->GetIndexForFieldId(*field_id);
425
426 ArtField* field = FindFieldFromCode<StaticObjectRead>(field_idx,
427 clinit,
428 Thread::Current(),
429 sizeof(HeapReference<Object>));
430 ObjPtr<Object> s0 = field->GetObj(klass.Get());
431 EXPECT_TRUE(s0 != nullptr) << field->PrettyField();
432
433 Handle<CharArray> char_array(hs.NewHandle(CharArray::Alloc(soa.Self(), 0)));
434 field->SetObj<false>(field->GetDeclaringClass(), char_array.Get());
435 EXPECT_OBJ_PTR_EQ(char_array.Get(), field->GetObj(klass.Get()));
436
437 field->SetObj<false>(field->GetDeclaringClass(), nullptr);
438 EXPECT_EQ(nullptr, field->GetObj(klass.Get()));
439
440 // TODO: more exhaustive tests of all 6 cases of ArtField::*FromCode
441 }
442
TEST_F(ObjectTest,String)443 TEST_F(ObjectTest, String) {
444 ScopedObjectAccess soa(Thread::Current());
445 // Test the empty string.
446 AssertString(0, "", "", 0);
447
448 // Test one-byte characters.
449 AssertString(1, " ", "\x00\x20", 0x20);
450 AssertString(1, "", "\x00\x00", 0);
451 AssertString(1, "\x7f", "\x00\x7f", 0x7f);
452 AssertString(2, "hi", "\x00\x68\x00\x69", (31 * 0x68) + 0x69);
453
454 // Test two-byte characters.
455 AssertString(1, "\xc2\x80", "\x00\x80", 0x80);
456 AssertString(1, "\xd9\xa6", "\x06\x66", 0x0666);
457 AssertString(1, "\xdf\xbf", "\x07\xff", 0x07ff);
458 AssertString(3, "h\xd9\xa6i", "\x00\x68\x06\x66\x00\x69",
459 (31 * ((31 * 0x68) + 0x0666)) + 0x69);
460
461 // Test three-byte characters.
462 AssertString(1, "\xe0\xa0\x80", "\x08\x00", 0x0800);
463 AssertString(1, "\xe1\x88\xb4", "\x12\x34", 0x1234);
464 AssertString(1, "\xef\xbf\xbf", "\xff\xff", 0xffff);
465 AssertString(3, "h\xe1\x88\xb4i", "\x00\x68\x12\x34\x00\x69",
466 (31 * ((31 * 0x68) + 0x1234)) + 0x69);
467
468 // Test four-byte characters.
469 AssertString(2, "\xf0\x9f\x8f\xa0", "\xd8\x3c\xdf\xe0", (31 * 0xd83c) + 0xdfe0);
470 AssertString(2, "\xf0\x9f\x9a\x80", "\xd8\x3d\xde\x80", (31 * 0xd83d) + 0xde80);
471 AssertString(4, "h\xf0\x9f\x9a\x80i", "\x00\x68\xd8\x3d\xde\x80\x00\x69",
472 (31 * (31 * (31 * 0x68 + 0xd83d) + 0xde80) + 0x69));
473 }
474
TEST_F(ObjectTest,StringEqualsUtf8)475 TEST_F(ObjectTest, StringEqualsUtf8) {
476 ScopedObjectAccess soa(Thread::Current());
477 StackHandleScope<2> hs(soa.Self());
478 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
479 EXPECT_TRUE(string->Equals("android"));
480 EXPECT_FALSE(string->Equals("Android"));
481 EXPECT_FALSE(string->Equals("ANDROID"));
482 EXPECT_FALSE(string->Equals(""));
483 EXPECT_FALSE(string->Equals("and"));
484 EXPECT_FALSE(string->Equals("androids"));
485
486 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
487 EXPECT_TRUE(empty->Equals(""));
488 EXPECT_FALSE(empty->Equals("a"));
489 }
490
TEST_F(ObjectTest,StringEquals)491 TEST_F(ObjectTest, StringEquals) {
492 ScopedObjectAccess soa(Thread::Current());
493 StackHandleScope<3> hs(soa.Self());
494 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
495 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
496 EXPECT_TRUE(string->Equals(string_2.Get()));
497 EXPECT_FALSE(string->Equals("Android"));
498 EXPECT_FALSE(string->Equals("ANDROID"));
499 EXPECT_FALSE(string->Equals(""));
500 EXPECT_FALSE(string->Equals("and"));
501 EXPECT_FALSE(string->Equals("androids"));
502
503 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
504 EXPECT_TRUE(empty->Equals(""));
505 EXPECT_FALSE(empty->Equals("a"));
506 }
507
TEST_F(ObjectTest,StringCompareTo)508 TEST_F(ObjectTest, StringCompareTo) {
509 ScopedObjectAccess soa(Thread::Current());
510 StackHandleScope<5> hs(soa.Self());
511 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
512 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
513 Handle<String> string_3(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "Android")));
514 Handle<String> string_4(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "and")));
515 Handle<String> string_5(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
516 EXPECT_EQ(0, string->CompareTo(string_2.Get()));
517 EXPECT_LT(0, string->CompareTo(string_3.Get()));
518 EXPECT_GT(0, string_3->CompareTo(string.Get()));
519 EXPECT_LT(0, string->CompareTo(string_4.Get()));
520 EXPECT_GT(0, string_4->CompareTo(string.Get()));
521 EXPECT_LT(0, string->CompareTo(string_5.Get()));
522 EXPECT_GT(0, string_5->CompareTo(string.Get()));
523 }
524
TEST_F(ObjectTest,StringLength)525 TEST_F(ObjectTest, StringLength) {
526 ScopedObjectAccess soa(Thread::Current());
527 StackHandleScope<1> hs(soa.Self());
528 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
529 EXPECT_EQ(string->GetLength(), 7);
530 EXPECT_EQ(string->GetModifiedUtf8Length(), 7);
531 }
532
TEST_F(ObjectTest,DescriptorCompare)533 TEST_F(ObjectTest, DescriptorCompare) {
534 // Two classloaders conflicts in compile_time_class_paths_.
535 ScopedObjectAccess soa(Thread::Current());
536
537 jobject jclass_loader_1 = LoadDex("ProtoCompare");
538 jobject jclass_loader_2 = LoadDex("ProtoCompare2");
539 StackHandleScope<4> hs(soa.Self());
540 Handle<ClassLoader> class_loader_1(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader_1)));
541 Handle<ClassLoader> class_loader_2(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader_2)));
542
543 Handle<Class> klass1 = hs.NewHandle(FindClass("LProtoCompare;", class_loader_1));
544 ASSERT_TRUE(klass1 != nullptr);
545 Handle<Class> klass2 = hs.NewHandle(FindClass("LProtoCompare2;", class_loader_2));
546 ASSERT_TRUE(klass2 != nullptr);
547
548 ArtMethod* m1_1 = klass1->GetVirtualMethod(0, kRuntimePointerSize);
549 EXPECT_STREQ(m1_1->GetName(), "m1");
550 ArtMethod* m2_1 = klass1->GetVirtualMethod(1, kRuntimePointerSize);
551 EXPECT_STREQ(m2_1->GetName(), "m2");
552 ArtMethod* m3_1 = klass1->GetVirtualMethod(2, kRuntimePointerSize);
553 EXPECT_STREQ(m3_1->GetName(), "m3");
554 ArtMethod* m4_1 = klass1->GetVirtualMethod(3, kRuntimePointerSize);
555 EXPECT_STREQ(m4_1->GetName(), "m4");
556
557 ArtMethod* m1_2 = klass2->GetVirtualMethod(0, kRuntimePointerSize);
558 EXPECT_STREQ(m1_2->GetName(), "m1");
559 ArtMethod* m2_2 = klass2->GetVirtualMethod(1, kRuntimePointerSize);
560 EXPECT_STREQ(m2_2->GetName(), "m2");
561 ArtMethod* m3_2 = klass2->GetVirtualMethod(2, kRuntimePointerSize);
562 EXPECT_STREQ(m3_2->GetName(), "m3");
563 ArtMethod* m4_2 = klass2->GetVirtualMethod(3, kRuntimePointerSize);
564 EXPECT_STREQ(m4_2->GetName(), "m4");
565 }
566
TEST_F(ObjectTest,StringHashCode)567 TEST_F(ObjectTest, StringHashCode) {
568 ScopedObjectAccess soa(Thread::Current());
569 StackHandleScope<3> hs(soa.Self());
570 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
571 Handle<String> A(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "A")));
572 Handle<String> ABC(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
573
574 EXPECT_EQ(0, empty->GetHashCode());
575 EXPECT_EQ(65, A->GetHashCode());
576 EXPECT_EQ(64578, ABC->GetHashCode());
577 }
578
TEST_F(ObjectTest,InstanceOf)579 TEST_F(ObjectTest, InstanceOf) {
580 ScopedObjectAccess soa(Thread::Current());
581 jobject jclass_loader = LoadDex("XandY");
582 StackHandleScope<10> hs(soa.Self());
583 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
584
585 Handle<Class> X = hs.NewHandle(FindClass("LX;", class_loader));
586 Handle<Class> Y = hs.NewHandle(FindClass("LY;", class_loader));
587 ASSERT_TRUE(X != nullptr);
588 ASSERT_TRUE(Y != nullptr);
589
590 Handle<Object> x(hs.NewHandle(X->AllocObject(soa.Self())));
591 Handle<Object> y(hs.NewHandle(Y->AllocObject(soa.Self())));
592 ASSERT_TRUE(x != nullptr);
593 ASSERT_TRUE(y != nullptr);
594
595 EXPECT_TRUE(x->InstanceOf(X.Get()));
596 EXPECT_FALSE(x->InstanceOf(Y.Get()));
597 EXPECT_TRUE(y->InstanceOf(X.Get()));
598 EXPECT_TRUE(y->InstanceOf(Y.Get()));
599
600 Handle<Class> java_lang_Class =
601 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Class;"));
602 Handle<Class> Object_array_class =
603 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
604
605 EXPECT_FALSE(java_lang_Class->InstanceOf(Object_array_class.Get()));
606 EXPECT_TRUE(Object_array_class->InstanceOf(java_lang_Class.Get()));
607
608 // All array classes implement Cloneable and Serializable.
609 Handle<Object> array =
610 hs.NewHandle<Object>(ObjectArray<Object>::Alloc(soa.Self(), Object_array_class.Get(), 1));
611 Handle<Class> java_lang_Cloneable =
612 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;"));
613 Handle<Class> java_io_Serializable =
614 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"));
615 EXPECT_TRUE(array->InstanceOf(java_lang_Cloneable.Get()));
616 EXPECT_TRUE(array->InstanceOf(java_io_Serializable.Get()));
617 }
618
TEST_F(ObjectTest,IsAssignableFrom)619 TEST_F(ObjectTest, IsAssignableFrom) {
620 ScopedObjectAccess soa(Thread::Current());
621 jobject jclass_loader = LoadDex("XandY");
622 StackHandleScope<5> hs(soa.Self());
623 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
624 Handle<Class> X = hs.NewHandle(FindClass("LX;", class_loader));
625 Handle<Class> Y = hs.NewHandle(FindClass("LY;", class_loader));
626
627 EXPECT_TRUE(X->IsAssignableFrom(X.Get()));
628 EXPECT_TRUE(X->IsAssignableFrom(Y.Get()));
629 EXPECT_FALSE(Y->IsAssignableFrom(X.Get()));
630 EXPECT_TRUE(Y->IsAssignableFrom(Y.Get()));
631
632 // class final String implements CharSequence, ..
633 Handle<Class> string =
634 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;"));
635 Handle<Class> charseq =
636 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/CharSequence;"));
637 // Can String be assigned to CharSequence without a cast?
638 EXPECT_TRUE(charseq->IsAssignableFrom(string.Get()));
639 // Can CharSequence be assigned to String without a cast?
640 EXPECT_FALSE(string->IsAssignableFrom(charseq.Get()));
641
642 // Primitive types are only assignable to themselves
643 const char* prims = "ZBCSIJFD";
644 std::vector<ObjPtr<Class>> prim_types(strlen(prims));
645 for (size_t i = 0; i < strlen(prims); i++) {
646 prim_types[i] = class_linker_->FindPrimitiveClass(prims[i]);
647 }
648 for (size_t i = 0; i < strlen(prims); i++) {
649 for (size_t j = 0; i < strlen(prims); i++) {
650 if (i == j) {
651 EXPECT_TRUE(prim_types[i]->IsAssignableFrom(prim_types[j]));
652 } else {
653 EXPECT_FALSE(prim_types[i]->IsAssignableFrom(prim_types[j]));
654 }
655 }
656 }
657 }
658
TEST_F(ObjectTest,IsAssignableFromArray)659 TEST_F(ObjectTest, IsAssignableFromArray) {
660 ScopedObjectAccess soa(Thread::Current());
661 jobject jclass_loader = LoadDex("XandY");
662 StackHandleScope<14> hs(soa.Self());
663 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
664 Handle<Class> X = hs.NewHandle(FindClass("LX;", class_loader));
665 Handle<Class> Y = hs.NewHandle(FindClass("LY;", class_loader));
666 ASSERT_TRUE(X != nullptr);
667 ASSERT_TRUE(Y != nullptr);
668
669 Handle<Class> YA = hs.NewHandle(FindClass("[LY;", class_loader));
670 Handle<Class> YAA = hs.NewHandle(FindClass("[[LY;", class_loader));
671 ASSERT_TRUE(YA != nullptr);
672 ASSERT_TRUE(YAA != nullptr);
673
674 Handle<Class> XAA = hs.NewHandle(FindClass("[[LX;", class_loader));
675 ASSERT_TRUE(XAA != nullptr);
676
677 Handle<Class> O = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
678 Handle<Class> OA =
679 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
680 Handle<Class> OAA =
681 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
682 Handle<Class> OAAA =
683 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[[Ljava/lang/Object;"));
684 ASSERT_TRUE(O != nullptr);
685 ASSERT_TRUE(OA != nullptr);
686 ASSERT_TRUE(OAA != nullptr);
687 ASSERT_TRUE(OAAA != nullptr);
688
689 Handle<Class> S =
690 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"));
691 Handle<Class> SA =
692 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/io/Serializable;"));
693 Handle<Class> SAA =
694 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/io/Serializable;"));
695 ASSERT_TRUE(S != nullptr);
696 ASSERT_TRUE(SA != nullptr);
697 ASSERT_TRUE(SAA != nullptr);
698
699 Handle<Class> IA = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
700 ASSERT_TRUE(IA != nullptr);
701
702 EXPECT_TRUE(YAA->IsAssignableFrom(YAA.Get())); // identity
703 EXPECT_TRUE(XAA->IsAssignableFrom(YAA.Get())); // element superclass
704 EXPECT_FALSE(YAA->IsAssignableFrom(XAA.Get()));
705 EXPECT_FALSE(Y->IsAssignableFrom(YAA.Get()));
706 EXPECT_FALSE(YA->IsAssignableFrom(YAA.Get()));
707 EXPECT_TRUE(O->IsAssignableFrom(YAA.Get())); // everything is an Object
708 EXPECT_TRUE(OA->IsAssignableFrom(YAA.Get()));
709 EXPECT_TRUE(OAA->IsAssignableFrom(YAA.Get()));
710 EXPECT_TRUE(S->IsAssignableFrom(YAA.Get())); // all arrays are Serializable
711 EXPECT_TRUE(SA->IsAssignableFrom(YAA.Get()));
712 EXPECT_FALSE(SAA->IsAssignableFrom(YAA.Get())); // unless Y was Serializable
713
714 EXPECT_FALSE(IA->IsAssignableFrom(OA.Get()));
715 EXPECT_FALSE(OA->IsAssignableFrom(IA.Get()));
716 EXPECT_TRUE(O->IsAssignableFrom(IA.Get()));
717 }
718
TEST_F(ObjectTest,FindInstanceField)719 TEST_F(ObjectTest, FindInstanceField) {
720 ScopedObjectAccess soa(Thread::Current());
721 StackHandleScope<1> hs(soa.Self());
722 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
723 ASSERT_TRUE(s != nullptr);
724 ObjPtr<Class> c = s->GetClass();
725 ASSERT_TRUE(c != nullptr);
726
727 // Wrong type.
728 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "J") == nullptr);
729 EXPECT_TRUE(c->FindInstanceField("count", "J") == nullptr);
730
731 // Wrong name.
732 EXPECT_TRUE(c->FindDeclaredInstanceField("Count", "I") == nullptr);
733 EXPECT_TRUE(c->FindInstanceField("Count", "I") == nullptr);
734
735 // Right name and type.
736 ArtField* f1 = c->FindDeclaredInstanceField("count", "I");
737 ArtField* f2 = c->FindInstanceField("count", "I");
738 EXPECT_TRUE(f1 != nullptr);
739 EXPECT_TRUE(f2 != nullptr);
740 EXPECT_EQ(f1, f2);
741
742 // TODO: check that s.count == 3.
743
744 // Ensure that we handle superclass fields correctly...
745 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/StringBuilder;");
746 ASSERT_TRUE(c != nullptr);
747 // No StringBuilder.count...
748 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "I") == nullptr);
749 // ...but there is an AbstractStringBuilder.count.
750 EXPECT_TRUE(c->FindInstanceField("count", "I") != nullptr);
751 }
752
TEST_F(ObjectTest,FindStaticField)753 TEST_F(ObjectTest, FindStaticField) {
754 ScopedObjectAccess soa(Thread::Current());
755 StackHandleScope<4> hs(soa.Self());
756 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
757 ASSERT_TRUE(s != nullptr);
758 Handle<Class> c(hs.NewHandle(s->GetClass()));
759 ASSERT_TRUE(c != nullptr);
760
761 // Wrong type.
762 EXPECT_TRUE(c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "I") == nullptr);
763 EXPECT_TRUE(c->FindStaticField("CASE_INSENSITIVE_ORDER", "I") == nullptr);
764
765 // Wrong name.
766 EXPECT_TRUE(c->FindDeclaredStaticField(
767 "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == nullptr);
768 EXPECT_TRUE(c->FindStaticField("cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == nullptr);
769
770 // Right name and type.
771 ArtField* f1 = c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
772 ArtField* f2 = c->FindStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
773 EXPECT_TRUE(f1 != nullptr);
774 EXPECT_TRUE(f2 != nullptr);
775 EXPECT_EQ(f1, f2);
776
777 // TODO: test static fields via superclasses.
778 // TODO: test static fields via interfaces.
779 // TODO: test that interfaces trump superclasses.
780 }
781
TEST_F(ObjectTest,IdentityHashCode)782 TEST_F(ObjectTest, IdentityHashCode) {
783 // Regression test for b/19046417 which had an infinite loop if the
784 // (seed & LockWord::kHashMask) == 0. seed 0 triggered the infinite loop since we did the check
785 // before the CAS which resulted in the same seed the next loop iteration.
786 mirror::Object::SetHashCodeSeed(0);
787 int32_t hash_code = mirror::Object::GenerateIdentityHashCode();
788 EXPECT_NE(hash_code, 0);
789 }
790
TEST_F(ObjectTest,ObjectPointer)791 TEST_F(ObjectTest, ObjectPointer) {
792 ScopedObjectAccess soa(Thread::Current());
793 jobject jclass_loader = LoadDex("XandY");
794 StackHandleScope<2> hs(soa.Self());
795 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
796 Handle<mirror::Class> h_X = hs.NewHandle(FindClass("LX;", class_loader));
797
798 if (kObjPtrPoisoning) {
799 ObjPtr<mirror::Object> null_ptr;
800 EXPECT_TRUE(null_ptr.IsNull());
801 EXPECT_TRUE(null_ptr.IsValid());
802 EXPECT_TRUE(null_ptr.Ptr() == nullptr);
803 EXPECT_TRUE(null_ptr == nullptr);
804 EXPECT_TRUE(null_ptr == null_ptr);
805 EXPECT_FALSE(null_ptr != null_ptr);
806 EXPECT_FALSE(null_ptr != nullptr);
807 null_ptr.AssertValid();
808 ObjPtr<Class> X(h_X.Get());
809 EXPECT_TRUE(!X.IsNull());
810 EXPECT_TRUE(X.IsValid());
811 EXPECT_TRUE(X.Ptr() != nullptr);
812 EXPECT_OBJ_PTR_EQ(h_X.Get(), X);
813 // FindClass may cause thread suspension, it should invalidate X.
814 ObjPtr<Class> Y = FindClass("LY;", class_loader);
815 EXPECT_TRUE(!Y.IsNull());
816 EXPECT_TRUE(Y.IsValid());
817 EXPECT_TRUE(Y.Ptr() != nullptr);
818
819 // Should IsNull be safe to call on null ObjPtr? I'll allow it for now.
820 EXPECT_TRUE(!X.IsNull());
821 EXPECT_TRUE(!X.IsValid());
822 // Make X valid again by copying out of handle.
823 X.Assign(h_X.Get());
824 EXPECT_TRUE(!X.IsNull());
825 EXPECT_TRUE(X.IsValid());
826 EXPECT_OBJ_PTR_EQ(h_X.Get(), X);
827
828 // Allow thread suspension to invalidate Y.
829 soa.Self()->AllowThreadSuspension();
830 EXPECT_TRUE(!Y.IsNull());
831 EXPECT_TRUE(!Y.IsValid());
832 } else {
833 // Test unpoisoned.
834 ObjPtr<mirror::Object> unpoisoned;
835 EXPECT_TRUE(unpoisoned.IsNull());
836 EXPECT_TRUE(unpoisoned.IsValid());
837 EXPECT_TRUE(unpoisoned.Ptr() == nullptr);
838 EXPECT_TRUE(unpoisoned == nullptr);
839 EXPECT_TRUE(unpoisoned == unpoisoned);
840 EXPECT_FALSE(unpoisoned != unpoisoned);
841 EXPECT_FALSE(unpoisoned != nullptr);
842
843 unpoisoned = h_X.Get();
844 EXPECT_FALSE(unpoisoned.IsNull());
845 EXPECT_TRUE(unpoisoned == h_X.Get());
846 EXPECT_OBJ_PTR_EQ(unpoisoned, h_X.Get());
847 }
848 }
849
TEST_F(ObjectTest,PrettyTypeOf)850 TEST_F(ObjectTest, PrettyTypeOf) {
851 ScopedObjectAccess soa(Thread::Current());
852 EXPECT_EQ("null", mirror::Object::PrettyTypeOf(nullptr));
853
854 StackHandleScope<2> hs(soa.Self());
855 Handle<mirror::String> s(hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "")));
856 EXPECT_EQ("java.lang.String", mirror::Object::PrettyTypeOf(s.Get()));
857
858 Handle<mirror::ShortArray> a(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 2)));
859 EXPECT_EQ("short[]", mirror::Object::PrettyTypeOf(a.Get()));
860
861 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
862 ASSERT_TRUE(c != nullptr);
863 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
864 EXPECT_EQ("java.lang.String[]", mirror::Object::PrettyTypeOf(o));
865 EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Object::PrettyTypeOf(o->GetClass()));
866 }
867
868 } // namespace mirror
869 } // namespace art
870