heap_test.cc revision 3481ba2c4e4f3aa80d8c6d50a9f85dacb56b508b 
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-inl.h"
25#include "scoped_thread_state_change.h"
26
27namespace art {
28namespace gc {
29
30class HeapTest : public CommonRuntimeTest {};
31
32TEST_F(HeapTest, ClearGrowthLimit) {
33  Heap* heap = Runtime::Current()->GetHeap();
34  int64_t max_memory_before = heap->GetMaxMemory();
35  int64_t total_memory_before = heap->GetTotalMemory();
36  heap->ClearGrowthLimit();
37  int64_t max_memory_after = heap->GetMaxMemory();
38  int64_t total_memory_after = heap->GetTotalMemory();
39  EXPECT_GE(max_memory_after, max_memory_before);
40  EXPECT_GE(total_memory_after, total_memory_before);
41}
42
43TEST_F(HeapTest, GarbageCollectClassLinkerInit) {
44  {
45    ScopedObjectAccess soa(Thread::Current());
46    // garbage is created during ClassLinker::Init
47
48    StackHandleScope<1> hs(soa.Self());
49    Handle<mirror::Class> c(
50        hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;")));
51    for (size_t i = 0; i < 1024; ++i) {
52      StackHandleScope<1> hs2(soa.Self());
53      Handle<mirror::ObjectArray<mirror::Object>> array(hs2.NewHandle(
54          mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), c.Get(), 2048)));
55      for (size_t j = 0; j < 2048; ++j) {
56        mirror::String* string = mirror::String::AllocFromModifiedUtf8(soa.Self(), "hello, world!");
57        // handle scope operator -> deferences the handle scope before running the method.
58        array->Set<false>(j, string);
59      }
60    }
61  }
62  Runtime::Current()->GetHeap()->CollectGarbage(false);
63}
64
65TEST_F(HeapTest, HeapBitmapCapacityTest) {
66  uint8_t* heap_begin = reinterpret_cast<uint8_t*>(0x1000);
67  const size_t heap_capacity = kObjectAlignment * (sizeof(intptr_t) * 8 + 1);
68  std::unique_ptr<accounting::ContinuousSpaceBitmap> bitmap(
69      accounting::ContinuousSpaceBitmap::Create("test bitmap", heap_begin, heap_capacity));
70  mirror::Object* fake_end_of_heap_object =
71      reinterpret_cast<mirror::Object*>(&heap_begin[heap_capacity - kObjectAlignment]);
72  bitmap->Set(fake_end_of_heap_object);
73}
74
75class ZygoteHeapTest : public CommonRuntimeTest {
76  void SetUpRuntimeOptions(RuntimeOptions* options) {
77    CommonRuntimeTest::SetUpRuntimeOptions(options);
78    options->push_back(std::make_pair("-Xzygote", nullptr));
79  }
80};
81
82TEST_F(ZygoteHeapTest, PreZygoteFork) {
83  // Exercise Heap::PreZygoteFork() to check it does not crash.
84  Runtime::Current()->GetHeap()->PreZygoteFork();
85}
86
87}  // namespace gc
88}  // namespace art
89