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 "class_linker-inl.h"
18 #include "common_runtime_test.h"
19 #include "gc/accounting/card_table-inl.h"
20 #include "gc/accounting/space_bitmap-inl.h"
21 #include "handle_scope-inl.h"
22 #include "mirror/class-inl.h"
23 #include "mirror/object-inl.h"
24 #include "mirror/object_array-alloc-inl.h"
25 #include "mirror/object_array-inl.h"
26 #include "scoped_thread_state_change-inl.h"
27
28 namespace art {
29 namespace gc {
30
31 class HeapTest : public CommonRuntimeTest {
32 public:
SetUp()33 void SetUp() override {
34 MemMap::Init();
35 std::string error_msg;
36 // Reserve the preferred address to force the heap to use another one for testing.
37 reserved_ = MemMap::MapAnonymous("ReserveMap",
38 gc::Heap::kPreferredAllocSpaceBegin,
39 16 * KB,
40 PROT_READ,
41 /*low_4gb=*/ true,
42 /*reuse=*/ false,
43 /*reservation=*/ nullptr,
44 &error_msg);
45 ASSERT_TRUE(reserved_.IsValid()) << error_msg;
46 CommonRuntimeTest::SetUp();
47 }
48
49 private:
50 MemMap reserved_;
51 };
52
TEST_F(HeapTest,ClearGrowthLimit)53 TEST_F(HeapTest, ClearGrowthLimit) {
54 Heap* heap = Runtime::Current()->GetHeap();
55 int64_t max_memory_before = heap->GetMaxMemory();
56 int64_t total_memory_before = heap->GetTotalMemory();
57 heap->ClearGrowthLimit();
58 int64_t max_memory_after = heap->GetMaxMemory();
59 int64_t total_memory_after = heap->GetTotalMemory();
60 EXPECT_GE(max_memory_after, max_memory_before);
61 EXPECT_GE(total_memory_after, total_memory_before);
62 }
63
TEST_F(HeapTest,GarbageCollectClassLinkerInit)64 TEST_F(HeapTest, GarbageCollectClassLinkerInit) {
65 {
66 ScopedObjectAccess soa(Thread::Current());
67 // garbage is created during ClassLinker::Init
68
69 StackHandleScope<1> hs(soa.Self());
70 Handle<mirror::Class> c(
71 hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;")));
72 for (size_t i = 0; i < 1024; ++i) {
73 StackHandleScope<1> hs2(soa.Self());
74 Handle<mirror::ObjectArray<mirror::Object>> array(hs2.NewHandle(
75 mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), c.Get(), 2048)));
76 for (size_t j = 0; j < 2048; ++j) {
77 ObjPtr<mirror::String> string =
78 mirror::String::AllocFromModifiedUtf8(soa.Self(), "hello, world!");
79 // handle scope operator -> deferences the handle scope before running the method.
80 array->Set<false>(j, string);
81 }
82 }
83 }
84 Runtime::Current()->GetHeap()->CollectGarbage(/* clear_soft_references= */ false);
85 }
86
TEST_F(HeapTest,HeapBitmapCapacityTest)87 TEST_F(HeapTest, HeapBitmapCapacityTest) {
88 uint8_t* heap_begin = reinterpret_cast<uint8_t*>(0x1000);
89 const size_t heap_capacity = kObjectAlignment * (sizeof(intptr_t) * 8 + 1);
90 accounting::ContinuousSpaceBitmap bitmap(
91 accounting::ContinuousSpaceBitmap::Create("test bitmap", heap_begin, heap_capacity));
92 mirror::Object* fake_end_of_heap_object =
93 reinterpret_cast<mirror::Object*>(&heap_begin[heap_capacity - kObjectAlignment]);
94 bitmap.Set(fake_end_of_heap_object);
95 }
96
TEST_F(HeapTest,DumpGCPerformanceOnShutdown)97 TEST_F(HeapTest, DumpGCPerformanceOnShutdown) {
98 Runtime::Current()->GetHeap()->CollectGarbage(/* clear_soft_references= */ false);
99 Runtime::Current()->SetDumpGCPerformanceOnShutdown(true);
100 }
101
102 class ZygoteHeapTest : public CommonRuntimeTest {
SetUpRuntimeOptions(RuntimeOptions * options)103 void SetUpRuntimeOptions(RuntimeOptions* options) override {
104 CommonRuntimeTest::SetUpRuntimeOptions(options);
105 options->push_back(std::make_pair("-Xzygote", nullptr));
106 }
107 };
108
TEST_F(ZygoteHeapTest,PreZygoteFork)109 TEST_F(ZygoteHeapTest, PreZygoteFork) {
110 // Exercise Heap::PreZygoteFork() to check it does not crash.
111 Runtime::Current()->GetHeap()->PreZygoteFork();
112 }
113
114 } // namespace gc
115 } // namespace art
116