| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/assert.h" |
| #include "vm/memory_region.h" |
| #include "vm/unit_test.h" |
| |
| namespace dart { |
| |
| static void* NewRegion(uword size) { |
| void* pointer = new uint8_t[size]; |
| return pointer; |
| } |
| |
| |
| static void DeleteRegion(const MemoryRegion& region) { |
| delete[] reinterpret_cast<uint8_t*>(region.pointer()); |
| } |
| |
| |
| UNIT_TEST_CASE(NullRegion) { |
| static const uword kSize = 512; |
| MemoryRegion region(NULL, kSize); |
| EXPECT(region.pointer() == NULL); |
| EXPECT_EQ(kSize, region.size()); |
| } |
| |
| |
| UNIT_TEST_CASE(NewRegion) { |
| static const uword kSize = 1024; |
| MemoryRegion region(NewRegion(kSize), kSize); |
| EXPECT_EQ(kSize, region.size()); |
| EXPECT(region.pointer() != NULL); |
| |
| region.Store<int32_t>(0, 42); |
| EXPECT_EQ(42, region.Load<int32_t>(0)); |
| |
| DeleteRegion(region); |
| } |
| |
| |
| UNIT_TEST_CASE(Subregion) { |
| static const uword kSize = 1024; |
| static const uword kSubOffset = 128; |
| static const uword kSubSize = 512; |
| MemoryRegion region(NewRegion(kSize), kSize); |
| MemoryRegion sub_region; |
| sub_region.Subregion(region, kSubOffset, kSubSize); |
| EXPECT_EQ(kSubSize, sub_region.size()); |
| EXPECT(sub_region.pointer() != NULL); |
| EXPECT(sub_region.start() == region.start() + kSubOffset); |
| |
| region.Store<int32_t>(0, 42); |
| sub_region.Store<int32_t>(0, 100); |
| EXPECT_EQ(42, region.Load<int32_t>(0)); |
| EXPECT_EQ(100, region.Load<int32_t>(kSubOffset)); |
| |
| DeleteRegion(region); |
| } |
| |
| |
| UNIT_TEST_CASE(ExtendedRegion) { |
| static const uword kSize = 1024; |
| static const uword kSubSize = 512; |
| static const uword kExtendSize = 512; |
| MemoryRegion region(NewRegion(kSize), kSize); |
| MemoryRegion sub_region; |
| sub_region.Subregion(region, 0, kSubSize); |
| MemoryRegion extended_region; |
| extended_region.Extend(sub_region, kExtendSize); |
| EXPECT_EQ(kSize, extended_region.size()); |
| EXPECT(extended_region.pointer() == region.pointer()); |
| EXPECT(extended_region.pointer() == sub_region.pointer()); |
| |
| extended_region.Store<int32_t>(0, 42); |
| EXPECT_EQ(42, extended_region.Load<int32_t>(0)); |
| |
| DeleteRegion(region); |
| } |
| |
| } // namespace dart |