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// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/heap/cppgc/heap-statistics-collector.h"
#include "include/cppgc/heap-statistics.h"
#include "src/base/macros.h"
#include "src/heap/cppgc/globals.h"
#include "test/unittests/heap/cppgc/tests.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cppgc {
namespace internal {
class HeapStatisticsCollectorTest : public testing::TestWithHeap {};
TEST_F(HeapStatisticsCollectorTest, EmptyHeapBriefStatisitcs) {
HeapStatistics brief_stats = Heap::From(GetHeap())->CollectStatistics(
HeapStatistics::DetailLevel::kBrief);
EXPECT_EQ(HeapStatistics::DetailLevel::kBrief, brief_stats.detail_level);
EXPECT_EQ(0u, brief_stats.used_size_bytes);
EXPECT_EQ(0u, brief_stats.used_size_bytes);
EXPECT_TRUE(brief_stats.space_stats.empty());
}
TEST_F(HeapStatisticsCollectorTest, EmptyHeapDetailedStatisitcs) {
HeapStatistics detailed_stats = Heap::From(GetHeap())->CollectStatistics(
HeapStatistics::DetailLevel::kDetailed);
EXPECT_EQ(HeapStatistics::DetailLevel::kDetailed,
detailed_stats.detail_level);
EXPECT_EQ(0u, detailed_stats.used_size_bytes);
EXPECT_EQ(0u, detailed_stats.used_size_bytes);
EXPECT_EQ(RawHeap::kNumberOfRegularSpaces, detailed_stats.space_stats.size());
for (HeapStatistics::SpaceStatistics& space_stats :
detailed_stats.space_stats) {
EXPECT_EQ(0u, space_stats.used_size_bytes);
EXPECT_EQ(0u, space_stats.used_size_bytes);
EXPECT_TRUE(space_stats.page_stats.empty());
if (space_stats.name == "LargePageSpace") {
// Large page space has no free list.
EXPECT_TRUE(space_stats.free_list_stats.bucket_size.empty());
EXPECT_TRUE(space_stats.free_list_stats.free_count.empty());
EXPECT_TRUE(space_stats.free_list_stats.free_size.empty());
} else {
EXPECT_EQ(kPageSizeLog2, space_stats.free_list_stats.bucket_size.size());
EXPECT_EQ(kPageSizeLog2, space_stats.free_list_stats.free_count.size());
EXPECT_EQ(kPageSizeLog2, space_stats.free_list_stats.free_size.size());
}
}
}
namespace {
template <size_t Size>
class GCed : public GarbageCollected<GCed<Size>> {
public:
void Trace(Visitor*) const {}
private:
char array_[Size];
};
} // namespace
TEST_F(HeapStatisticsCollectorTest, NonEmptyNormalPage) {
MakeGarbageCollected<GCed<1>>(GetHeap()->GetAllocationHandle());
static constexpr size_t used_size =
RoundUp<kAllocationGranularity>(1 + sizeof(HeapObjectHeader));
HeapStatistics detailed_stats = Heap::From(GetHeap())->CollectStatistics(
HeapStatistics::DetailLevel::kDetailed);
EXPECT_EQ(HeapStatistics::DetailLevel::kDetailed,
detailed_stats.detail_level);
EXPECT_EQ(kPageSize, detailed_stats.physical_size_bytes);
EXPECT_EQ(used_size, detailed_stats.used_size_bytes);
EXPECT_EQ(RawHeap::kNumberOfRegularSpaces, detailed_stats.space_stats.size());
bool found_non_empty_space = false;
for (const HeapStatistics::SpaceStatistics& space_stats :
detailed_stats.space_stats) {
if (space_stats.page_stats.empty()) {
EXPECT_EQ(0u, space_stats.physical_size_bytes);
EXPECT_EQ(0u, space_stats.used_size_bytes);
continue;
}
EXPECT_NE("LargePageSpace", space_stats.name);
EXPECT_FALSE(found_non_empty_space);
found_non_empty_space = true;
EXPECT_EQ(kPageSize, space_stats.physical_size_bytes);
EXPECT_EQ(used_size, space_stats.used_size_bytes);
EXPECT_EQ(1u, space_stats.page_stats.size());
EXPECT_EQ(kPageSize, space_stats.page_stats.back().physical_size_bytes);
EXPECT_EQ(used_size, space_stats.page_stats.back().used_size_bytes);
}
EXPECT_TRUE(found_non_empty_space);
}
TEST_F(HeapStatisticsCollectorTest, NonEmptyLargePage) {
MakeGarbageCollected<GCed<kLargeObjectSizeThreshold>>(
GetHeap()->GetAllocationHandle());
static constexpr size_t used_size = RoundUp<kAllocationGranularity>(
kLargeObjectSizeThreshold + sizeof(HeapObjectHeader));
static constexpr size_t physical_size =
RoundUp<kAllocationGranularity>(used_size + sizeof(LargePage));
HeapStatistics detailed_stats = Heap::From(GetHeap())->CollectStatistics(
HeapStatistics::DetailLevel::kDetailed);
EXPECT_EQ(HeapStatistics::DetailLevel::kDetailed,
detailed_stats.detail_level);
EXPECT_EQ(physical_size, detailed_stats.physical_size_bytes);
EXPECT_EQ(used_size, detailed_stats.used_size_bytes);
EXPECT_EQ(RawHeap::kNumberOfRegularSpaces, detailed_stats.space_stats.size());
bool found_non_empty_space = false;
for (const HeapStatistics::SpaceStatistics& space_stats :
detailed_stats.space_stats) {
if (space_stats.page_stats.empty()) {
EXPECT_EQ(0u, space_stats.physical_size_bytes);
EXPECT_EQ(0u, space_stats.used_size_bytes);
continue;
}
EXPECT_EQ("LargePageSpace", space_stats.name);
EXPECT_FALSE(found_non_empty_space);
found_non_empty_space = true;
EXPECT_EQ(physical_size, space_stats.physical_size_bytes);
EXPECT_EQ(used_size, space_stats.used_size_bytes);
EXPECT_EQ(1u, space_stats.page_stats.size());
EXPECT_EQ(physical_size, space_stats.page_stats.back().physical_size_bytes);
EXPECT_EQ(used_size, space_stats.page_stats.back().used_size_bytes);
}
EXPECT_TRUE(found_non_empty_space);
}
} // namespace internal
} // namespace cppgc
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