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/enums.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 {
49 namespace mirror {
50
51 class ObjectTest : public CommonRuntimeTest {
52 protected:
AssertString(int32_t expected_utf16_length,const char * utf8_in,const char * utf16_expected_le,int32_t expected_hash)53 void AssertString(int32_t expected_utf16_length,
54 const char* utf8_in,
55 const char* utf16_expected_le,
56 int32_t expected_hash)
57 REQUIRES_SHARED(Locks::mutator_lock_) {
58 std::unique_ptr<uint16_t[]> utf16_expected(new uint16_t[expected_utf16_length]);
59 for (int32_t i = 0; i < expected_utf16_length; i++) {
60 uint16_t ch = (((utf16_expected_le[i*2 + 0] & 0xff) << 8) |
61 ((utf16_expected_le[i*2 + 1] & 0xff) << 0));
62 utf16_expected[i] = ch;
63 }
64
65 Thread* self = Thread::Current();
66 StackHandleScope<1> hs(self);
67 Handle<String> string(
68 hs.NewHandle(String::AllocFromModifiedUtf8(self, expected_utf16_length, utf8_in)));
69 ASSERT_EQ(expected_utf16_length, string->GetLength());
70 ASSERT_EQ(string->IsValueNull(), false);
71 // strlen is necessary because the 1-character string "\x00\x00" is interpreted as ""
72 ASSERT_TRUE(string->Equals(utf8_in) || (expected_utf16_length == 1 && strlen(utf8_in) == 0));
73 for (int32_t i = 0; i < expected_utf16_length; i++) {
74 EXPECT_EQ(utf16_expected[i], string->CharAt(i));
75 }
76 EXPECT_EQ(expected_hash, string->GetHashCode());
77 }
78
79 template <class T>
AllocObjectArray(Thread * self,size_t length)80 ObjPtr<mirror::ObjectArray<T>> AllocObjectArray(Thread* self, size_t length)
81 REQUIRES_SHARED(Locks::mutator_lock_) {
82 return mirror::ObjectArray<T>::Alloc(
83 self, GetClassRoot(ClassRoot::kObjectArrayClass, class_linker_), length);
84 }
85 };
86
87 // Keep constants in sync.
TEST_F(ObjectTest,Constants)88 TEST_F(ObjectTest, Constants) {
89 EXPECT_EQ(kObjectReferenceSize, sizeof(HeapReference<Object>));
90 EXPECT_EQ(kObjectHeaderSize, sizeof(Object));
91 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_32,
92 ArtMethod::EntryPointFromQuickCompiledCodeOffset(PointerSize::k32).
93 Int32Value());
94 EXPECT_EQ(ART_METHOD_QUICK_CODE_OFFSET_64,
95 ArtMethod::EntryPointFromQuickCompiledCodeOffset(PointerSize::k64).
96 Int32Value());
97 }
98
TEST_F(ObjectTest,IsInSamePackage)99 TEST_F(ObjectTest, IsInSamePackage) {
100 // Matches
101 EXPECT_TRUE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/Class;"));
102 EXPECT_TRUE(Class::IsInSamePackage("LFoo;", "LBar;"));
103
104 // Mismatches
105 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/io/File;"));
106 EXPECT_FALSE(Class::IsInSamePackage("Ljava/lang/Object;", "Ljava/lang/reflect/Method;"));
107 }
108
TEST_F(ObjectTest,Clone)109 TEST_F(ObjectTest, Clone) {
110 ScopedObjectAccess soa(Thread::Current());
111 StackHandleScope<2> hs(soa.Self());
112 Handle<ObjectArray<Object>> a1(hs.NewHandle(AllocObjectArray<Object>(soa.Self(), 256)));
113 size_t s1 = a1->SizeOf();
114 ObjPtr<Object> clone = Object::Clone(a1, soa.Self());
115 EXPECT_EQ(s1, clone->SizeOf());
116 EXPECT_TRUE(clone->GetClass() == a1->GetClass());
117 }
118
TEST_F(ObjectTest,AllocObjectArray)119 TEST_F(ObjectTest, AllocObjectArray) {
120 ScopedObjectAccess soa(Thread::Current());
121 StackHandleScope<3> hs(soa.Self());
122 Handle<ObjectArray<Object>> oa(hs.NewHandle(AllocObjectArray<Object>(soa.Self(), 2)));
123 EXPECT_EQ(2, oa->GetLength());
124 EXPECT_TRUE(oa->Get(0) == nullptr);
125 EXPECT_TRUE(oa->Get(1) == nullptr);
126 oa->Set<false>(0, oa.Get());
127 EXPECT_TRUE(oa->Get(0) == oa.Get());
128 EXPECT_TRUE(oa->Get(1) == nullptr);
129 oa->Set<false>(1, oa.Get());
130 EXPECT_TRUE(oa->Get(0) == oa.Get());
131 EXPECT_TRUE(oa->Get(1) == oa.Get());
132
133 Handle<Class> aioobe = hs.NewHandle(
134 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
135
136 EXPECT_TRUE(oa->Get(-1) == nullptr);
137 EXPECT_TRUE(soa.Self()->IsExceptionPending());
138 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
139 soa.Self()->ClearException();
140
141 EXPECT_TRUE(oa->Get(2) == nullptr);
142 EXPECT_TRUE(soa.Self()->IsExceptionPending());
143 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
144 soa.Self()->ClearException();
145
146 ASSERT_TRUE(oa->GetClass() != nullptr);
147 Handle<mirror::Class> klass(hs.NewHandle(oa->GetClass()));
148 ASSERT_EQ(2U, klass->NumDirectInterfaces());
149 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;"),
150 mirror::Class::GetDirectInterface(soa.Self(), klass.Get(), 0));
151 EXPECT_OBJ_PTR_EQ(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"),
152 mirror::Class::GetDirectInterface(soa.Self(), klass.Get(), 1));
153 }
154
TEST_F(ObjectTest,AllocArray)155 TEST_F(ObjectTest, AllocArray) {
156 ScopedObjectAccess soa(Thread::Current());
157 StackHandleScope<2> hs(soa.Self());
158 MutableHandle<Class> c = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
159 gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
160 MutableHandle<Array> a = hs.NewHandle(
161 Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
162 EXPECT_TRUE(c.Get() == a->GetClass());
163 EXPECT_EQ(1, a->GetLength());
164
165 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
166 a.Assign(Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
167 EXPECT_TRUE(c.Get() == a->GetClass());
168 EXPECT_EQ(1, a->GetLength());
169
170 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
171 a.Assign(Array::Alloc(soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
172 EXPECT_TRUE(c.Get() == a->GetClass());
173 EXPECT_EQ(1, a->GetLength());
174 }
175
TEST_F(ObjectTest,AllocArray_FillUsable)176 TEST_F(ObjectTest, AllocArray_FillUsable) {
177 ScopedObjectAccess soa(Thread::Current());
178 StackHandleScope<2> hs(soa.Self());
179 MutableHandle<Class> c = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[B"));
180 gc::AllocatorType allocator_type = Runtime::Current()->GetHeap()->GetCurrentAllocator();
181 MutableHandle<Array> a = hs.NewHandle(
182 Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
183 soa.Self(), c.Get(), 1, c->GetComponentSizeShift(), allocator_type));
184 EXPECT_TRUE(c.Get() == a->GetClass());
185 EXPECT_LE(1, a->GetLength());
186
187 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[I"));
188 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
189 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
190 EXPECT_TRUE(c.Get() == a->GetClass());
191 EXPECT_LE(2, a->GetLength());
192
193 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
194 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
195 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
196 EXPECT_TRUE(c.Get() == a->GetClass());
197 EXPECT_LE(2, a->GetLength());
198
199 c.Assign(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
200 a.Assign(Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>(
201 soa.Self(), c.Get(), 2, c->GetComponentSizeShift(), allocator_type));
202 EXPECT_TRUE(c.Get() == a->GetClass());
203 EXPECT_LE(2, a->GetLength());
204 }
205
206 template<typename ArrayT>
TestPrimitiveArray(ClassLinker * cl)207 void TestPrimitiveArray(ClassLinker* cl) {
208 ScopedObjectAccess soa(Thread::Current());
209 using T = typename ArrayT::ElementType;
210
211 StackHandleScope<2> hs(soa.Self());
212 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
213 EXPECT_EQ(2, a->GetLength());
214 EXPECT_EQ(0, a->Get(0));
215 EXPECT_EQ(0, a->Get(1));
216 a->Set(0, T(123));
217 EXPECT_EQ(T(123), a->Get(0));
218 EXPECT_EQ(0, a->Get(1));
219 a->Set(1, T(321));
220 EXPECT_EQ(T(123), a->Get(0));
221 EXPECT_EQ(T(321), a->Get(1));
222
223 Handle<Class> aioobe = hs.NewHandle(
224 cl->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
225
226 EXPECT_EQ(0, a->Get(-1));
227 EXPECT_TRUE(soa.Self()->IsExceptionPending());
228 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
229 soa.Self()->ClearException();
230
231 EXPECT_EQ(0, a->Get(2));
232 EXPECT_TRUE(soa.Self()->IsExceptionPending());
233 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
234 soa.Self()->ClearException();
235 }
236
TEST_F(ObjectTest,PrimitiveArray_Boolean_Alloc)237 TEST_F(ObjectTest, PrimitiveArray_Boolean_Alloc) {
238 TestPrimitiveArray<BooleanArray>(class_linker_);
239 }
TEST_F(ObjectTest,PrimitiveArray_Byte_Alloc)240 TEST_F(ObjectTest, PrimitiveArray_Byte_Alloc) {
241 TestPrimitiveArray<ByteArray>(class_linker_);
242 }
TEST_F(ObjectTest,PrimitiveArray_Char_Alloc)243 TEST_F(ObjectTest, PrimitiveArray_Char_Alloc) {
244 TestPrimitiveArray<CharArray>(class_linker_);
245 }
TEST_F(ObjectTest,PrimitiveArray_Int_Alloc)246 TEST_F(ObjectTest, PrimitiveArray_Int_Alloc) {
247 TestPrimitiveArray<IntArray>(class_linker_);
248 }
TEST_F(ObjectTest,PrimitiveArray_Long_Alloc)249 TEST_F(ObjectTest, PrimitiveArray_Long_Alloc) {
250 TestPrimitiveArray<LongArray>(class_linker_);
251 }
TEST_F(ObjectTest,PrimitiveArray_Short_Alloc)252 TEST_F(ObjectTest, PrimitiveArray_Short_Alloc) {
253 TestPrimitiveArray<ShortArray>(class_linker_);
254 }
255
TEST_F(ObjectTest,PointerArrayWriteRead)256 TEST_F(ObjectTest, PointerArrayWriteRead) {
257 ScopedObjectAccess soa(Thread::Current());
258 StackHandleScope<2> hs(soa.Self());
259
260 Handle<PointerArray> a32 =
261 hs.NewHandle(ObjPtr<PointerArray>::DownCast<Array>(IntArray::Alloc(soa.Self(), 1)));
262 ASSERT_TRUE(a32 != nullptr);
263 ASSERT_EQ(1, a32->GetLength());
264 EXPECT_EQ(0u, (a32->GetElementPtrSize<uint32_t, PointerSize::k32>(0u)));
265 EXPECT_EQ(0u, (a32->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k32>(0u)));
266 for (uint32_t value : { 0u, 1u, 0x7fffffffu, 0x80000000u, 0xffffffffu }) {
267 a32->SetElementPtrSize(0u, value, PointerSize::k32);
268 EXPECT_EQ(value, (a32->GetElementPtrSize<uint32_t, PointerSize::k32>(0u)));
269 EXPECT_EQ(value, (a32->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k32>(0u)));
270 // Check that the value matches also when retrieved as `uint64_t`.
271 // This is a regression test for unintended sign-extension. b/155780442
272 // (Using `uint64_t` rather than `uintptr_t`, so that the 32-bit test checks this too.)
273 EXPECT_EQ(value, (a32->GetElementPtrSize<uint64_t, PointerSize::k32>(0u)));
274 EXPECT_EQ(value, (a32->GetElementPtrSizeUnchecked<uint64_t, PointerSize::k32>(0u)));
275 }
276
277 Handle<PointerArray> a64 =
278 hs.NewHandle(ObjPtr<PointerArray>::DownCast<Array>(LongArray::Alloc(soa.Self(), 1)));
279 ASSERT_TRUE(a64 != nullptr);
280 ASSERT_EQ(1, a64->GetLength());
281 EXPECT_EQ(0u, (a64->GetElementPtrSize<uint32_t, PointerSize::k64>(0u)));
282 EXPECT_EQ(0u, (a64->GetElementPtrSizeUnchecked<uint32_t, PointerSize::k64>(0u)));
283 for (uint64_t value : { UINT64_C(0),
284 UINT64_C(1),
285 UINT64_C(0x7fffffff),
286 UINT64_C(0x80000000),
287 UINT64_C(0xffffffff),
288 UINT64_C(0x100000000),
289 UINT64_C(0x7fffffffffffffff),
290 UINT64_C(0x8000000000000000),
291 UINT64_C(0xffffffffffffffff) }) {
292 a64->SetElementPtrSize(0u, value, PointerSize::k64);
293 EXPECT_EQ(value, (a64->GetElementPtrSize<uint64_t, PointerSize::k64>(0u)));
294 EXPECT_EQ(value, (a64->GetElementPtrSizeUnchecked<uint64_t, PointerSize::k64>(0u)));
295 }
296 }
297
TEST_F(ObjectTest,PrimitiveArray_Double_Alloc)298 TEST_F(ObjectTest, PrimitiveArray_Double_Alloc) {
299 using ArrayT = DoubleArray;
300 ScopedObjectAccess soa(Thread::Current());
301 using T = typename ArrayT::ElementType;
302
303 StackHandleScope<2> hs(soa.Self());
304 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
305 EXPECT_EQ(2, a->GetLength());
306 EXPECT_DOUBLE_EQ(0, a->Get(0));
307 EXPECT_DOUBLE_EQ(0, a->Get(1));
308 a->Set(0, T(123));
309 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
310 EXPECT_DOUBLE_EQ(0, a->Get(1));
311 a->Set(1, T(321));
312 EXPECT_DOUBLE_EQ(T(123), a->Get(0));
313 EXPECT_DOUBLE_EQ(T(321), a->Get(1));
314
315 Handle<Class> aioobe = hs.NewHandle(
316 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
317
318 EXPECT_DOUBLE_EQ(0, a->Get(-1));
319 EXPECT_TRUE(soa.Self()->IsExceptionPending());
320 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
321 soa.Self()->ClearException();
322
323 EXPECT_DOUBLE_EQ(0, a->Get(2));
324 EXPECT_TRUE(soa.Self()->IsExceptionPending());
325 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
326 soa.Self()->ClearException();
327 }
328
TEST_F(ObjectTest,PrimitiveArray_Float_Alloc)329 TEST_F(ObjectTest, PrimitiveArray_Float_Alloc) {
330 using ArrayT = FloatArray;
331 ScopedObjectAccess soa(Thread::Current());
332 using T = typename ArrayT::ElementType;
333
334 StackHandleScope<2> hs(soa.Self());
335 Handle<ArrayT> a = hs.NewHandle(ArrayT::Alloc(soa.Self(), 2));
336 EXPECT_FLOAT_EQ(2, a->GetLength());
337 EXPECT_FLOAT_EQ(0, a->Get(0));
338 EXPECT_FLOAT_EQ(0, a->Get(1));
339 a->Set(0, T(123));
340 EXPECT_FLOAT_EQ(T(123), a->Get(0));
341 EXPECT_FLOAT_EQ(0, a->Get(1));
342 a->Set(1, T(321));
343 EXPECT_FLOAT_EQ(T(123), a->Get(0));
344 EXPECT_FLOAT_EQ(T(321), a->Get(1));
345
346 Handle<Class> aioobe = hs.NewHandle(
347 class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/ArrayIndexOutOfBoundsException;"));
348
349 EXPECT_FLOAT_EQ(0, a->Get(-1));
350 EXPECT_TRUE(soa.Self()->IsExceptionPending());
351 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
352 soa.Self()->ClearException();
353
354 EXPECT_FLOAT_EQ(0, a->Get(2));
355 EXPECT_TRUE(soa.Self()->IsExceptionPending());
356 EXPECT_OBJ_PTR_EQ(aioobe.Get(), soa.Self()->GetException()->GetClass());
357 soa.Self()->ClearException();
358 }
359
360
TEST_F(ObjectTest,CreateMultiArray)361 TEST_F(ObjectTest, CreateMultiArray) {
362 ScopedObjectAccess soa(Thread::Current());
363
364 StackHandleScope<4> hs(soa.Self());
365 Handle<Class> int_class(hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "I")));
366 Handle<Class> int_array_class = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
367 MutableHandle<IntArray> dims(hs.NewHandle(IntArray::Alloc(soa.Self(), 1)));
368 dims->Set<false>(0, 1);
369 MutableHandle<Array> multi = hs.NewHandle(Array::CreateMultiArray(soa.Self(), int_class, dims));
370 EXPECT_OBJ_PTR_EQ(int_array_class.Get(), multi->GetClass());
371 EXPECT_EQ(1, multi->GetLength());
372
373 dims->Set<false>(0, -1);
374 multi.Assign(Array::CreateMultiArray(soa.Self(), int_class, dims));
375 EXPECT_TRUE(soa.Self()->IsExceptionPending());
376 EXPECT_EQ(mirror::Class::PrettyDescriptor(soa.Self()->GetException()->GetClass()),
377 "java.lang.NegativeArraySizeException");
378 soa.Self()->ClearException();
379
380 dims.Assign(IntArray::Alloc(soa.Self(), 2));
381 for (int i = 1; i < 20; ++i) {
382 for (int j = 0; j < 20; ++j) {
383 dims->Set<false>(0, i);
384 dims->Set<false>(1, j);
385 multi.Assign(Array::CreateMultiArray(soa.Self(), int_class, dims));
386 ObjPtr<mirror::Class> expected_class = class_linker_->FindSystemClass(soa.Self(), "[[I");
387 EXPECT_OBJ_PTR_EQ(multi->GetClass(), expected_class);
388 EXPECT_EQ(i, multi->GetLength());
389 for (int k = 0; k < i; ++k) {
390 ObjPtr<Array> outer = multi->AsObjectArray<Array>()->Get(k);
391 EXPECT_OBJ_PTR_EQ(int_array_class.Get(), outer->GetClass());
392 EXPECT_EQ(j, outer->GetLength());
393 }
394 }
395 }
396 }
397
TEST_F(ObjectTest,StaticFieldFromCode)398 TEST_F(ObjectTest, StaticFieldFromCode) {
399 // pretend we are trying to access 'Static.s0' from StaticsFromCode.<clinit>
400 ScopedObjectAccess soa(Thread::Current());
401 jobject class_loader = LoadDex("StaticsFromCode");
402 const DexFile* dex_file = GetFirstDexFile(class_loader);
403
404 StackHandleScope<3> hs(soa.Self());
405 Handle<mirror::ClassLoader> loader(hs.NewHandle(soa.Decode<ClassLoader>(class_loader)));
406 Handle<Class> klass =
407 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LStaticsFromCode;", loader));
408 ArtMethod* clinit = klass->FindClassInitializer(kRuntimePointerSize);
409 const dex::TypeId* klass_type_id = dex_file->FindTypeId("LStaticsFromCode;");
410 ASSERT_TRUE(klass_type_id != nullptr);
411
412 const dex::TypeId* type_type_id = dex_file->FindTypeId("Ljava/lang/Object;");
413 ASSERT_TRUE(type_type_id != nullptr);
414
415 const dex::StringId* name_str_id = dex_file->FindStringId("s0");
416 ASSERT_TRUE(name_str_id != nullptr);
417
418 const dex::FieldId* field_id = dex_file->FindFieldId(
419 *klass_type_id, *name_str_id, *type_type_id);
420 ASSERT_TRUE(field_id != nullptr);
421 uint32_t field_idx = dex_file->GetIndexForFieldId(*field_id);
422
423 ArtField* field = FindFieldFromCode<StaticObjectRead, true>(field_idx, clinit, Thread::Current(),
424 sizeof(HeapReference<Object>));
425 ObjPtr<Object> s0 = field->GetObj(klass.Get());
426 EXPECT_TRUE(s0 != nullptr);
427
428 Handle<CharArray> char_array(hs.NewHandle(CharArray::Alloc(soa.Self(), 0)));
429 field->SetObj<false>(field->GetDeclaringClass(), char_array.Get());
430 EXPECT_OBJ_PTR_EQ(char_array.Get(), field->GetObj(klass.Get()));
431
432 field->SetObj<false>(field->GetDeclaringClass(), nullptr);
433 EXPECT_EQ(nullptr, field->GetObj(klass.Get()));
434
435 // TODO: more exhaustive tests of all 6 cases of ArtField::*FromCode
436 }
437
TEST_F(ObjectTest,String)438 TEST_F(ObjectTest, String) {
439 ScopedObjectAccess soa(Thread::Current());
440 // Test the empty string.
441 AssertString(0, "", "", 0);
442
443 // Test one-byte characters.
444 AssertString(1, " ", "\x00\x20", 0x20);
445 AssertString(1, "", "\x00\x00", 0);
446 AssertString(1, "\x7f", "\x00\x7f", 0x7f);
447 AssertString(2, "hi", "\x00\x68\x00\x69", (31 * 0x68) + 0x69);
448
449 // Test two-byte characters.
450 AssertString(1, "\xc2\x80", "\x00\x80", 0x80);
451 AssertString(1, "\xd9\xa6", "\x06\x66", 0x0666);
452 AssertString(1, "\xdf\xbf", "\x07\xff", 0x07ff);
453 AssertString(3, "h\xd9\xa6i", "\x00\x68\x06\x66\x00\x69",
454 (31 * ((31 * 0x68) + 0x0666)) + 0x69);
455
456 // Test three-byte characters.
457 AssertString(1, "\xe0\xa0\x80", "\x08\x00", 0x0800);
458 AssertString(1, "\xe1\x88\xb4", "\x12\x34", 0x1234);
459 AssertString(1, "\xef\xbf\xbf", "\xff\xff", 0xffff);
460 AssertString(3, "h\xe1\x88\xb4i", "\x00\x68\x12\x34\x00\x69",
461 (31 * ((31 * 0x68) + 0x1234)) + 0x69);
462
463 // Test four-byte characters.
464 AssertString(2, "\xf0\x9f\x8f\xa0", "\xd8\x3c\xdf\xe0", (31 * 0xd83c) + 0xdfe0);
465 AssertString(2, "\xf0\x9f\x9a\x80", "\xd8\x3d\xde\x80", (31 * 0xd83d) + 0xde80);
466 AssertString(4, "h\xf0\x9f\x9a\x80i", "\x00\x68\xd8\x3d\xde\x80\x00\x69",
467 (31 * (31 * (31 * 0x68 + 0xd83d) + 0xde80) + 0x69));
468 }
469
TEST_F(ObjectTest,StringEqualsUtf8)470 TEST_F(ObjectTest, StringEqualsUtf8) {
471 ScopedObjectAccess soa(Thread::Current());
472 StackHandleScope<2> hs(soa.Self());
473 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
474 EXPECT_TRUE(string->Equals("android"));
475 EXPECT_FALSE(string->Equals("Android"));
476 EXPECT_FALSE(string->Equals("ANDROID"));
477 EXPECT_FALSE(string->Equals(""));
478 EXPECT_FALSE(string->Equals("and"));
479 EXPECT_FALSE(string->Equals("androids"));
480
481 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
482 EXPECT_TRUE(empty->Equals(""));
483 EXPECT_FALSE(empty->Equals("a"));
484 }
485
TEST_F(ObjectTest,StringEquals)486 TEST_F(ObjectTest, StringEquals) {
487 ScopedObjectAccess soa(Thread::Current());
488 StackHandleScope<3> hs(soa.Self());
489 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
490 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
491 EXPECT_TRUE(string->Equals(string_2.Get()));
492 EXPECT_FALSE(string->Equals("Android"));
493 EXPECT_FALSE(string->Equals("ANDROID"));
494 EXPECT_FALSE(string->Equals(""));
495 EXPECT_FALSE(string->Equals("and"));
496 EXPECT_FALSE(string->Equals("androids"));
497
498 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
499 EXPECT_TRUE(empty->Equals(""));
500 EXPECT_FALSE(empty->Equals("a"));
501 }
502
TEST_F(ObjectTest,StringCompareTo)503 TEST_F(ObjectTest, StringCompareTo) {
504 ScopedObjectAccess soa(Thread::Current());
505 StackHandleScope<5> hs(soa.Self());
506 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
507 Handle<String> string_2(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
508 Handle<String> string_3(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "Android")));
509 Handle<String> string_4(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "and")));
510 Handle<String> string_5(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
511 EXPECT_EQ(0, string->CompareTo(string_2.Get()));
512 EXPECT_LT(0, string->CompareTo(string_3.Get()));
513 EXPECT_GT(0, string_3->CompareTo(string.Get()));
514 EXPECT_LT(0, string->CompareTo(string_4.Get()));
515 EXPECT_GT(0, string_4->CompareTo(string.Get()));
516 EXPECT_LT(0, string->CompareTo(string_5.Get()));
517 EXPECT_GT(0, string_5->CompareTo(string.Get()));
518 }
519
TEST_F(ObjectTest,StringLength)520 TEST_F(ObjectTest, StringLength) {
521 ScopedObjectAccess soa(Thread::Current());
522 StackHandleScope<1> hs(soa.Self());
523 Handle<String> string(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "android")));
524 EXPECT_EQ(string->GetLength(), 7);
525 EXPECT_EQ(string->GetUtfLength(), 7);
526 }
527
TEST_F(ObjectTest,DescriptorCompare)528 TEST_F(ObjectTest, DescriptorCompare) {
529 // Two classloaders conflicts in compile_time_class_paths_.
530 ScopedObjectAccess soa(Thread::Current());
531 ClassLinker* linker = class_linker_;
532
533 jobject jclass_loader_1 = LoadDex("ProtoCompare");
534 jobject jclass_loader_2 = LoadDex("ProtoCompare2");
535 StackHandleScope<4> hs(soa.Self());
536 Handle<ClassLoader> class_loader_1(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader_1)));
537 Handle<ClassLoader> class_loader_2(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader_2)));
538
539 Handle<Class> klass1 =
540 hs.NewHandle(linker->FindClass(soa.Self(), "LProtoCompare;", class_loader_1));
541 ASSERT_TRUE(klass1 != nullptr);
542 Handle<Class> klass2 =
543 hs.NewHandle(linker->FindClass(soa.Self(), "LProtoCompare2;", class_loader_2));
544 ASSERT_TRUE(klass2 != nullptr);
545
546 ArtMethod* m1_1 = klass1->GetVirtualMethod(0, kRuntimePointerSize);
547 EXPECT_STREQ(m1_1->GetName(), "m1");
548 ArtMethod* m2_1 = klass1->GetVirtualMethod(1, kRuntimePointerSize);
549 EXPECT_STREQ(m2_1->GetName(), "m2");
550 ArtMethod* m3_1 = klass1->GetVirtualMethod(2, kRuntimePointerSize);
551 EXPECT_STREQ(m3_1->GetName(), "m3");
552 ArtMethod* m4_1 = klass1->GetVirtualMethod(3, kRuntimePointerSize);
553 EXPECT_STREQ(m4_1->GetName(), "m4");
554
555 ArtMethod* m1_2 = klass2->GetVirtualMethod(0, kRuntimePointerSize);
556 EXPECT_STREQ(m1_2->GetName(), "m1");
557 ArtMethod* m2_2 = klass2->GetVirtualMethod(1, kRuntimePointerSize);
558 EXPECT_STREQ(m2_2->GetName(), "m2");
559 ArtMethod* m3_2 = klass2->GetVirtualMethod(2, kRuntimePointerSize);
560 EXPECT_STREQ(m3_2->GetName(), "m3");
561 ArtMethod* m4_2 = klass2->GetVirtualMethod(3, kRuntimePointerSize);
562 EXPECT_STREQ(m4_2->GetName(), "m4");
563 }
564
TEST_F(ObjectTest,StringHashCode)565 TEST_F(ObjectTest, StringHashCode) {
566 ScopedObjectAccess soa(Thread::Current());
567 StackHandleScope<3> hs(soa.Self());
568 Handle<String> empty(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "")));
569 Handle<String> A(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "A")));
570 Handle<String> ABC(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
571
572 EXPECT_EQ(0, empty->GetHashCode());
573 EXPECT_EQ(65, A->GetHashCode());
574 EXPECT_EQ(64578, ABC->GetHashCode());
575 }
576
TEST_F(ObjectTest,InstanceOf)577 TEST_F(ObjectTest, InstanceOf) {
578 ScopedObjectAccess soa(Thread::Current());
579 jobject jclass_loader = LoadDex("XandY");
580 StackHandleScope<10> hs(soa.Self());
581 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
582
583 Handle<Class> X = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LX;", class_loader));
584 Handle<Class> Y = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LY;", class_loader));
585 ASSERT_TRUE(X != nullptr);
586 ASSERT_TRUE(Y != nullptr);
587
588 Handle<Object> x(hs.NewHandle(X->AllocObject(soa.Self())));
589 Handle<Object> y(hs.NewHandle(Y->AllocObject(soa.Self())));
590 ASSERT_TRUE(x != nullptr);
591 ASSERT_TRUE(y != nullptr);
592
593 EXPECT_TRUE(x->InstanceOf(X.Get()));
594 EXPECT_FALSE(x->InstanceOf(Y.Get()));
595 EXPECT_TRUE(y->InstanceOf(X.Get()));
596 EXPECT_TRUE(y->InstanceOf(Y.Get()));
597
598 Handle<Class> java_lang_Class =
599 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Class;"));
600 Handle<Class> Object_array_class =
601 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
602
603 EXPECT_FALSE(java_lang_Class->InstanceOf(Object_array_class.Get()));
604 EXPECT_TRUE(Object_array_class->InstanceOf(java_lang_Class.Get()));
605
606 // All array classes implement Cloneable and Serializable.
607 Handle<Object> array =
608 hs.NewHandle<Object>(ObjectArray<Object>::Alloc(soa.Self(), Object_array_class.Get(), 1));
609 Handle<Class> java_lang_Cloneable =
610 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Cloneable;"));
611 Handle<Class> java_io_Serializable =
612 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"));
613 EXPECT_TRUE(array->InstanceOf(java_lang_Cloneable.Get()));
614 EXPECT_TRUE(array->InstanceOf(java_io_Serializable.Get()));
615 }
616
TEST_F(ObjectTest,IsAssignableFrom)617 TEST_F(ObjectTest, IsAssignableFrom) {
618 ScopedObjectAccess soa(Thread::Current());
619 jobject jclass_loader = LoadDex("XandY");
620 StackHandleScope<5> hs(soa.Self());
621 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
622 Handle<Class> X = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LX;", class_loader));
623 Handle<Class> Y = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LY;", class_loader));
624
625 EXPECT_TRUE(X->IsAssignableFrom(X.Get()));
626 EXPECT_TRUE(X->IsAssignableFrom(Y.Get()));
627 EXPECT_FALSE(Y->IsAssignableFrom(X.Get()));
628 EXPECT_TRUE(Y->IsAssignableFrom(Y.Get()));
629
630 // class final String implements CharSequence, ..
631 Handle<Class> string =
632 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/String;"));
633 Handle<Class> charseq =
634 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/CharSequence;"));
635 // Can String be assigned to CharSequence without a cast?
636 EXPECT_TRUE(charseq->IsAssignableFrom(string.Get()));
637 // Can CharSequence be assigned to String without a cast?
638 EXPECT_FALSE(string->IsAssignableFrom(charseq.Get()));
639
640 // Primitive types are only assignable to themselves
641 const char* prims = "ZBCSIJFD";
642 std::vector<ObjPtr<Class>> prim_types(strlen(prims));
643 for (size_t i = 0; i < strlen(prims); i++) {
644 prim_types[i] = class_linker_->FindPrimitiveClass(prims[i]);
645 }
646 for (size_t i = 0; i < strlen(prims); i++) {
647 for (size_t j = 0; i < strlen(prims); i++) {
648 if (i == j) {
649 EXPECT_TRUE(prim_types[i]->IsAssignableFrom(prim_types[j]));
650 } else {
651 EXPECT_FALSE(prim_types[i]->IsAssignableFrom(prim_types[j]));
652 }
653 }
654 }
655 }
656
TEST_F(ObjectTest,IsAssignableFromArray)657 TEST_F(ObjectTest, IsAssignableFromArray) {
658 ScopedObjectAccess soa(Thread::Current());
659 jobject jclass_loader = LoadDex("XandY");
660 StackHandleScope<14> hs(soa.Self());
661 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
662 Handle<Class> X = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LX;", class_loader));
663 Handle<Class> Y = hs.NewHandle(class_linker_->FindClass(soa.Self(), "LY;", class_loader));
664 ASSERT_TRUE(X != nullptr);
665 ASSERT_TRUE(Y != nullptr);
666
667 Handle<Class> YA = hs.NewHandle(class_linker_->FindClass(soa.Self(), "[LY;", class_loader));
668 Handle<Class> YAA = hs.NewHandle(class_linker_->FindClass(soa.Self(), "[[LY;", class_loader));
669 ASSERT_TRUE(YA != nullptr);
670 ASSERT_TRUE(YAA != nullptr);
671
672 Handle<Class> XAA = hs.NewHandle(class_linker_->FindClass(soa.Self(), "[[LX;", class_loader));
673 ASSERT_TRUE(XAA != nullptr);
674
675 Handle<Class> O = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
676 Handle<Class> OA =
677 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;"));
678 Handle<Class> OAA =
679 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/lang/Object;"));
680 Handle<Class> OAAA =
681 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[[Ljava/lang/Object;"));
682 ASSERT_TRUE(O != nullptr);
683 ASSERT_TRUE(OA != nullptr);
684 ASSERT_TRUE(OAA != nullptr);
685 ASSERT_TRUE(OAAA != nullptr);
686
687 Handle<Class> S =
688 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "Ljava/io/Serializable;"));
689 Handle<Class> SA =
690 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/io/Serializable;"));
691 Handle<Class> SAA =
692 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[[Ljava/io/Serializable;"));
693 ASSERT_TRUE(S != nullptr);
694 ASSERT_TRUE(SA != nullptr);
695 ASSERT_TRUE(SAA != nullptr);
696
697 Handle<Class> IA = hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[I"));
698 ASSERT_TRUE(IA != nullptr);
699
700 EXPECT_TRUE(YAA->IsAssignableFrom(YAA.Get())); // identity
701 EXPECT_TRUE(XAA->IsAssignableFrom(YAA.Get())); // element superclass
702 EXPECT_FALSE(YAA->IsAssignableFrom(XAA.Get()));
703 EXPECT_FALSE(Y->IsAssignableFrom(YAA.Get()));
704 EXPECT_FALSE(YA->IsAssignableFrom(YAA.Get()));
705 EXPECT_TRUE(O->IsAssignableFrom(YAA.Get())); // everything is an Object
706 EXPECT_TRUE(OA->IsAssignableFrom(YAA.Get()));
707 EXPECT_TRUE(OAA->IsAssignableFrom(YAA.Get()));
708 EXPECT_TRUE(S->IsAssignableFrom(YAA.Get())); // all arrays are Serializable
709 EXPECT_TRUE(SA->IsAssignableFrom(YAA.Get()));
710 EXPECT_FALSE(SAA->IsAssignableFrom(YAA.Get())); // unless Y was Serializable
711
712 EXPECT_FALSE(IA->IsAssignableFrom(OA.Get()));
713 EXPECT_FALSE(OA->IsAssignableFrom(IA.Get()));
714 EXPECT_TRUE(O->IsAssignableFrom(IA.Get()));
715 }
716
TEST_F(ObjectTest,FindInstanceField)717 TEST_F(ObjectTest, FindInstanceField) {
718 ScopedObjectAccess soa(Thread::Current());
719 StackHandleScope<1> hs(soa.Self());
720 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
721 ASSERT_TRUE(s != nullptr);
722 ObjPtr<Class> c = s->GetClass();
723 ASSERT_TRUE(c != nullptr);
724
725 // Wrong type.
726 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "J") == nullptr);
727 EXPECT_TRUE(c->FindInstanceField("count", "J") == nullptr);
728
729 // Wrong name.
730 EXPECT_TRUE(c->FindDeclaredInstanceField("Count", "I") == nullptr);
731 EXPECT_TRUE(c->FindInstanceField("Count", "I") == nullptr);
732
733 // Right name and type.
734 ArtField* f1 = c->FindDeclaredInstanceField("count", "I");
735 ArtField* f2 = c->FindInstanceField("count", "I");
736 EXPECT_TRUE(f1 != nullptr);
737 EXPECT_TRUE(f2 != nullptr);
738 EXPECT_EQ(f1, f2);
739
740 // TODO: check that s.count == 3.
741
742 // Ensure that we handle superclass fields correctly...
743 c = class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/StringBuilder;");
744 ASSERT_TRUE(c != nullptr);
745 // No StringBuilder.count...
746 EXPECT_TRUE(c->FindDeclaredInstanceField("count", "I") == nullptr);
747 // ...but there is an AbstractStringBuilder.count.
748 EXPECT_TRUE(c->FindInstanceField("count", "I") != nullptr);
749 }
750
TEST_F(ObjectTest,FindStaticField)751 TEST_F(ObjectTest, FindStaticField) {
752 ScopedObjectAccess soa(Thread::Current());
753 StackHandleScope<4> hs(soa.Self());
754 Handle<String> s(hs.NewHandle(String::AllocFromModifiedUtf8(soa.Self(), "ABC")));
755 ASSERT_TRUE(s != nullptr);
756 Handle<Class> c(hs.NewHandle(s->GetClass()));
757 ASSERT_TRUE(c != nullptr);
758
759 // Wrong type.
760 EXPECT_TRUE(c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "I") == nullptr);
761 EXPECT_TRUE(mirror::Class::FindStaticField(
762 soa.Self(), c.Get(), "CASE_INSENSITIVE_ORDER", "I") == nullptr);
763
764 // Wrong name.
765 EXPECT_TRUE(c->FindDeclaredStaticField(
766 "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == nullptr);
767 EXPECT_TRUE(
768 mirror::Class::FindStaticField(
769 soa.Self(), c.Get(), "cASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;") == nullptr);
770
771 // Right name and type.
772 ArtField* f1 = c->FindDeclaredStaticField("CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
773 ArtField* f2 = mirror::Class::FindStaticField(
774 soa.Self(), c.Get(), "CASE_INSENSITIVE_ORDER", "Ljava/util/Comparator;");
775 EXPECT_TRUE(f1 != nullptr);
776 EXPECT_TRUE(f2 != nullptr);
777 EXPECT_EQ(f1, f2);
778
779 // TODO: test static fields via superclasses.
780 // TODO: test static fields via interfaces.
781 // TODO: test that interfaces trump superclasses.
782 }
783
TEST_F(ObjectTest,IdentityHashCode)784 TEST_F(ObjectTest, IdentityHashCode) {
785 // Regression test for b/19046417 which had an infinite loop if the
786 // (seed & LockWord::kHashMask) == 0. seed 0 triggered the infinite loop since we did the check
787 // before the CAS which resulted in the same seed the next loop iteration.
788 mirror::Object::SetHashCodeSeed(0);
789 int32_t hash_code = mirror::Object::GenerateIdentityHashCode();
790 EXPECT_NE(hash_code, 0);
791 }
792
TEST_F(ObjectTest,ObjectPointer)793 TEST_F(ObjectTest, ObjectPointer) {
794 ScopedObjectAccess soa(Thread::Current());
795 jobject jclass_loader = LoadDex("XandY");
796 StackHandleScope<2> hs(soa.Self());
797 Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
798 Handle<mirror::Class> h_X(
799 hs.NewHandle(class_linker_->FindClass(soa.Self(), "LX;", class_loader)));
800
801 if (kObjPtrPoisoning) {
802 ObjPtr<mirror::Object> null_ptr;
803 EXPECT_TRUE(null_ptr.IsNull());
804 EXPECT_TRUE(null_ptr.IsValid());
805 EXPECT_TRUE(null_ptr.Ptr() == nullptr);
806 EXPECT_TRUE(null_ptr == nullptr);
807 EXPECT_TRUE(null_ptr == null_ptr);
808 EXPECT_FALSE(null_ptr != null_ptr);
809 EXPECT_FALSE(null_ptr != nullptr);
810 null_ptr.AssertValid();
811 ObjPtr<Class> X(h_X.Get());
812 EXPECT_TRUE(!X.IsNull());
813 EXPECT_TRUE(X.IsValid());
814 EXPECT_TRUE(X.Ptr() != nullptr);
815 EXPECT_OBJ_PTR_EQ(h_X.Get(), X);
816 // FindClass may cause thread suspension, it should invalidate X.
817 ObjPtr<Class> Y(class_linker_->FindClass(soa.Self(), "LY;", class_loader));
818 EXPECT_TRUE(!Y.IsNull());
819 EXPECT_TRUE(Y.IsValid());
820 EXPECT_TRUE(Y.Ptr() != nullptr);
821
822 // Should IsNull be safe to call on null ObjPtr? I'll allow it for now.
823 EXPECT_TRUE(!X.IsNull());
824 EXPECT_TRUE(!X.IsValid());
825 // Make X valid again by copying out of handle.
826 X.Assign(h_X.Get());
827 EXPECT_TRUE(!X.IsNull());
828 EXPECT_TRUE(X.IsValid());
829 EXPECT_OBJ_PTR_EQ(h_X.Get(), X);
830
831 // Allow thread suspension to invalidate Y.
832 soa.Self()->AllowThreadSuspension();
833 EXPECT_TRUE(!Y.IsNull());
834 EXPECT_TRUE(!Y.IsValid());
835 } else {
836 // Test unpoisoned.
837 ObjPtr<mirror::Object> unpoisoned;
838 EXPECT_TRUE(unpoisoned.IsNull());
839 EXPECT_TRUE(unpoisoned.IsValid());
840 EXPECT_TRUE(unpoisoned.Ptr() == nullptr);
841 EXPECT_TRUE(unpoisoned == nullptr);
842 EXPECT_TRUE(unpoisoned == unpoisoned);
843 EXPECT_FALSE(unpoisoned != unpoisoned);
844 EXPECT_FALSE(unpoisoned != nullptr);
845
846 unpoisoned = h_X.Get();
847 EXPECT_FALSE(unpoisoned.IsNull());
848 EXPECT_TRUE(unpoisoned == h_X.Get());
849 EXPECT_OBJ_PTR_EQ(unpoisoned, h_X.Get());
850 }
851 }
852
TEST_F(ObjectTest,PrettyTypeOf)853 TEST_F(ObjectTest, PrettyTypeOf) {
854 ScopedObjectAccess soa(Thread::Current());
855 EXPECT_EQ("null", mirror::Object::PrettyTypeOf(nullptr));
856
857 StackHandleScope<2> hs(soa.Self());
858 Handle<mirror::String> s(hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "")));
859 EXPECT_EQ("java.lang.String", mirror::Object::PrettyTypeOf(s.Get()));
860
861 Handle<mirror::ShortArray> a(hs.NewHandle(mirror::ShortArray::Alloc(soa.Self(), 2)));
862 EXPECT_EQ("short[]", mirror::Object::PrettyTypeOf(a.Get()));
863
864 ObjPtr<mirror::Class> c = class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/String;");
865 ASSERT_TRUE(c != nullptr);
866 ObjPtr<mirror::Object> o = mirror::ObjectArray<mirror::String>::Alloc(soa.Self(), c, 0);
867 EXPECT_EQ("java.lang.String[]", mirror::Object::PrettyTypeOf(o));
868 EXPECT_EQ("java.lang.Class<java.lang.String[]>", mirror::Object::PrettyTypeOf(o->GetClass()));
869 }
870
871 } // namespace mirror
872 } // namespace art
873