heap_test.cc revision 700a402244a1a423da4f3ba8032459f4b65fa18f 
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 "common_runtime_test.h"
18#include "gc/accounting/card_table-inl.h"
19#include "gc/accounting/space_bitmap-inl.h"
20#include "mirror/class-inl.h"
21#include "mirror/object-inl.h"
22#include "mirror/object_array-inl.h"
23#include "handle_scope-inl.h"
24
25namespace art {
26namespace gc {
27
28class HeapTest : public CommonRuntimeTest {};
29
30TEST_F(HeapTest, ClearGrowthLimit) {
31  Heap* heap = Runtime::Current()->GetHeap();
32  int64_t max_memory_before = heap->GetMaxMemory();
33  int64_t total_memory_before = heap->GetTotalMemory();
34  heap->ClearGrowthLimit();
35  int64_t max_memory_after = heap->GetMaxMemory();
36  int64_t total_memory_after = heap->GetTotalMemory();
37  EXPECT_GE(max_memory_after, max_memory_before);
38  EXPECT_GE(total_memory_after, total_memory_before);
39}
40
41TEST_F(HeapTest, GarbageCollectClassLinkerInit) {
42  {
43    ScopedObjectAccess soa(Thread::Current());
44    // garbage is created during ClassLinker::Init
45
46    StackHandleScope<1> hs(soa.Self());
47    Handle<mirror::Class> c(
48        hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;")));
49    for (size_t i = 0; i < 1024; ++i) {
50      StackHandleScope<1> hs(soa.Self());
51      Handle<mirror::ObjectArray<mirror::Object>> array(hs.NewHandle(
52          mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), c.Get(), 2048)));
53      for (size_t j = 0; j < 2048; ++j) {
54        mirror::String* string = mirror::String::AllocFromModifiedUtf8(soa.Self(), "hello, world!");
55        // handle scope operator -> deferences the handle scope before running the method.
56        array->Set<false>(j, string);
57      }
58    }
59  }
60  Runtime::Current()->GetHeap()->CollectGarbage(false);
61}
62
63TEST_F(HeapTest, HeapBitmapCapacityTest) {
64  byte* heap_begin = reinterpret_cast<byte*>(0x1000);
65  const size_t heap_capacity = kObjectAlignment * (sizeof(intptr_t) * 8 + 1);
66  std::unique_ptr<accounting::ContinuousSpaceBitmap> bitmap(
67      accounting::ContinuousSpaceBitmap::Create("test bitmap", heap_begin, heap_capacity));
68  mirror::Object* fake_end_of_heap_object =
69      reinterpret_cast<mirror::Object*>(&heap_begin[heap_capacity - kObjectAlignment]);
70  bitmap->Set(fake_end_of_heap_object);
71}
72
73}  // namespace gc
74}  // namespace art
75