276 lines
13 KiB
C++
276 lines
13 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <algorithm>
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#include "base/metrics/metrics.h"
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#include "class_linker-inl.h"
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#include "common_runtime_test.h"
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#include "gc/accounting/card_table-inl.h"
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#include "gc/accounting/space_bitmap-inl.h"
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#include "handle_scope-inl.h"
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#include "mirror/class-inl.h"
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#include "mirror/object-inl.h"
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#include "mirror/object_array-alloc-inl.h"
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#include "mirror/object_array-inl.h"
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#include "scoped_thread_state_change-inl.h"
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namespace art {
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namespace gc {
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class HeapTest : public CommonRuntimeTest {
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public:
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HeapTest() {
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use_boot_image_ = true; // Make the Runtime creation cheaper.
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}
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void SetUp() override {
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MemMap::Init();
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std::string error_msg;
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// Reserve the preferred address to force the heap to use another one for testing.
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reserved_ = MemMap::MapAnonymous("ReserveMap",
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gc::Heap::kPreferredAllocSpaceBegin,
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16 * KB,
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PROT_READ,
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/*low_4gb=*/ true,
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/*reuse=*/ false,
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/*reservation=*/ nullptr,
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&error_msg);
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// There is no guarantee that reserved_ will be valid (due to ASLR). See b/175018342.
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CommonRuntimeTest::SetUp();
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}
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private:
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MemMap reserved_;
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};
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TEST_F(HeapTest, ClearGrowthLimit) {
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Heap* heap = Runtime::Current()->GetHeap();
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int64_t max_memory_before = heap->GetMaxMemory();
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int64_t total_memory_before = heap->GetTotalMemory();
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heap->ClearGrowthLimit();
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int64_t max_memory_after = heap->GetMaxMemory();
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int64_t total_memory_after = heap->GetTotalMemory();
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EXPECT_GE(max_memory_after, max_memory_before);
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EXPECT_GE(total_memory_after, total_memory_before);
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}
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TEST_F(HeapTest, GarbageCollectClassLinkerInit) {
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{
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ScopedObjectAccess soa(Thread::Current());
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// garbage is created during ClassLinker::Init
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::Class> c(
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hs.NewHandle(class_linker_->FindSystemClass(soa.Self(), "[Ljava/lang/Object;")));
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for (size_t i = 0; i < 1024; ++i) {
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StackHandleScope<1> hs2(soa.Self());
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Handle<mirror::ObjectArray<mirror::Object>> array(hs2.NewHandle(
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mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), c.Get(), 2048)));
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for (size_t j = 0; j < 2048; ++j) {
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ObjPtr<mirror::String> string =
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mirror::String::AllocFromModifiedUtf8(soa.Self(), "hello, world!");
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// handle scope operator -> deferences the handle scope before running the method.
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array->Set<false>(j, string);
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}
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}
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}
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Runtime::Current()->GetHeap()->CollectGarbage(/* clear_soft_references= */ false);
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}
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TEST_F(HeapTest, HeapBitmapCapacityTest) {
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uint8_t* heap_begin = reinterpret_cast<uint8_t*>(0x1000);
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const size_t heap_capacity = kObjectAlignment * (sizeof(intptr_t) * 8 + 1);
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accounting::ContinuousSpaceBitmap bitmap(
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accounting::ContinuousSpaceBitmap::Create("test bitmap", heap_begin, heap_capacity));
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mirror::Object* fake_end_of_heap_object =
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reinterpret_cast<mirror::Object*>(&heap_begin[heap_capacity - kObjectAlignment]);
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bitmap.Set(fake_end_of_heap_object);
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}
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TEST_F(HeapTest, DumpGCPerformanceOnShutdown) {
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Runtime::Current()->GetHeap()->CollectGarbage(/* clear_soft_references= */ false);
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Runtime::Current()->SetDumpGCPerformanceOnShutdown(true);
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}
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bool AnyIsFalse(bool x, bool y) { return !x || !y; }
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TEST_F(HeapTest, GCMetrics) {
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// Allocate a few string objects (to be collected), then trigger garbage
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// collection, and check that GC metrics are updated (where applicable).
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{
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constexpr const size_t kNumObj = 128;
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ScopedObjectAccess soa(Thread::Current());
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StackHandleScope<kNumObj> hs(soa.Self());
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for (size_t i = 0u; i < kNumObj; ++i) {
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Handle<mirror::String> string [[maybe_unused]] (
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hs.NewHandle(mirror::String::AllocFromModifiedUtf8(soa.Self(), "test")));
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}
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}
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Heap* heap = Runtime::Current()->GetHeap();
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heap->CollectGarbage(/* clear_soft_references= */ false);
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// ART Metrics.
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metrics::ArtMetrics* metrics = Runtime::Current()->GetMetrics();
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// ART full-heap GC metrics.
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metrics::MetricsBase<int64_t>* full_gc_collection_time = metrics->FullGcCollectionTime();
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metrics::MetricsBase<uint64_t>* full_gc_count = metrics->FullGcCount();
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metrics::MetricsBase<uint64_t>* full_gc_count_delta = metrics->FullGcCountDelta();
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metrics::MetricsBase<int64_t>* full_gc_throughput = metrics->FullGcThroughput();
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metrics::MetricsBase<int64_t>* full_gc_tracing_throughput = metrics->FullGcTracingThroughput();
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metrics::MetricsBase<uint64_t>* full_gc_throughput_avg = metrics->FullGcThroughputAvg();
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metrics::MetricsBase<uint64_t>* full_gc_tracing_throughput_avg =
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metrics->FullGcTracingThroughputAvg();
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metrics::MetricsBase<uint64_t>* full_gc_scanned_bytes = metrics->FullGcScannedBytes();
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metrics::MetricsBase<uint64_t>* full_gc_scanned_bytes_delta = metrics->FullGcScannedBytesDelta();
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metrics::MetricsBase<uint64_t>* full_gc_freed_bytes = metrics->FullGcFreedBytes();
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metrics::MetricsBase<uint64_t>* full_gc_freed_bytes_delta = metrics->FullGcFreedBytesDelta();
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metrics::MetricsBase<uint64_t>* full_gc_duration = metrics->FullGcDuration();
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metrics::MetricsBase<uint64_t>* full_gc_duration_delta = metrics->FullGcDurationDelta();
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// ART young-generation GC metrics.
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metrics::MetricsBase<int64_t>* young_gc_collection_time = metrics->YoungGcCollectionTime();
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metrics::MetricsBase<uint64_t>* young_gc_count = metrics->YoungGcCount();
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metrics::MetricsBase<uint64_t>* young_gc_count_delta = metrics->YoungGcCountDelta();
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metrics::MetricsBase<int64_t>* young_gc_throughput = metrics->YoungGcThroughput();
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metrics::MetricsBase<int64_t>* young_gc_tracing_throughput = metrics->YoungGcTracingThroughput();
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metrics::MetricsBase<uint64_t>* young_gc_throughput_avg = metrics->YoungGcThroughputAvg();
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metrics::MetricsBase<uint64_t>* young_gc_tracing_throughput_avg =
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metrics->YoungGcTracingThroughputAvg();
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metrics::MetricsBase<uint64_t>* young_gc_scanned_bytes = metrics->YoungGcScannedBytes();
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metrics::MetricsBase<uint64_t>* young_gc_scanned_bytes_delta =
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metrics->YoungGcScannedBytesDelta();
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metrics::MetricsBase<uint64_t>* young_gc_freed_bytes = metrics->YoungGcFreedBytes();
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metrics::MetricsBase<uint64_t>* young_gc_freed_bytes_delta = metrics->YoungGcFreedBytesDelta();
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metrics::MetricsBase<uint64_t>* young_gc_duration = metrics->YoungGcDuration();
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metrics::MetricsBase<uint64_t>* young_gc_duration_delta = metrics->YoungGcDurationDelta();
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CollectorType fg_collector_type = heap->GetForegroundCollectorType();
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if (fg_collector_type == kCollectorTypeCC || fg_collector_type == kCollectorTypeCMC) {
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// Only the Concurrent Copying and Concurrent Mark-Compact collectors enable
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// GC metrics at the moment.
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if (heap->GetUseGenerationalCC()) {
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// Check that full-heap and/or young-generation GC metrics are non-null
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// after trigerring the collection.
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EXPECT_PRED2(
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AnyIsFalse, full_gc_collection_time->IsNull(), young_gc_collection_time->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_count->IsNull(), young_gc_count->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_count_delta->IsNull(), young_gc_count_delta->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_throughput->IsNull(), young_gc_throughput->IsNull());
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EXPECT_PRED2(
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AnyIsFalse, full_gc_tracing_throughput->IsNull(), young_gc_tracing_throughput->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_throughput_avg->IsNull(), young_gc_throughput_avg->IsNull());
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EXPECT_PRED2(AnyIsFalse,
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full_gc_tracing_throughput_avg->IsNull(),
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young_gc_tracing_throughput_avg->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_scanned_bytes->IsNull(), young_gc_scanned_bytes->IsNull());
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EXPECT_PRED2(AnyIsFalse,
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full_gc_scanned_bytes_delta->IsNull(),
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young_gc_scanned_bytes_delta->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_freed_bytes->IsNull(), young_gc_freed_bytes->IsNull());
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EXPECT_PRED2(
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AnyIsFalse, full_gc_freed_bytes_delta->IsNull(), young_gc_freed_bytes_delta->IsNull());
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// We have observed that sometimes the GC duration (both for full-heap and
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// young-generation collections) is null (b/271112044). Temporarily
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// suspend the following checks while we investigate.
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//
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// TODO(b/271112044): Investigate and adjust these expectations and/or the
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// corresponding metric logic.
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#if 0
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EXPECT_PRED2(AnyIsFalse, full_gc_duration->IsNull(), young_gc_duration->IsNull());
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EXPECT_PRED2(AnyIsFalse, full_gc_duration_delta->IsNull(), young_gc_duration_delta->IsNull());
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#endif
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} else {
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// Check that only full-heap GC metrics are non-null after trigerring the collection.
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EXPECT_FALSE(full_gc_collection_time->IsNull());
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EXPECT_FALSE(full_gc_count->IsNull());
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EXPECT_FALSE(full_gc_count_delta->IsNull());
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EXPECT_FALSE(full_gc_throughput->IsNull());
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EXPECT_FALSE(full_gc_tracing_throughput->IsNull());
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EXPECT_FALSE(full_gc_throughput_avg->IsNull());
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EXPECT_FALSE(full_gc_tracing_throughput_avg->IsNull());
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EXPECT_FALSE(full_gc_scanned_bytes->IsNull());
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EXPECT_FALSE(full_gc_scanned_bytes_delta->IsNull());
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EXPECT_FALSE(full_gc_freed_bytes->IsNull());
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EXPECT_FALSE(full_gc_freed_bytes_delta->IsNull());
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EXPECT_FALSE(full_gc_duration->IsNull());
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EXPECT_FALSE(full_gc_duration_delta->IsNull());
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EXPECT_TRUE(young_gc_collection_time->IsNull());
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EXPECT_TRUE(young_gc_count->IsNull());
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EXPECT_TRUE(young_gc_count_delta->IsNull());
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EXPECT_TRUE(young_gc_throughput->IsNull());
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EXPECT_TRUE(young_gc_tracing_throughput->IsNull());
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EXPECT_TRUE(young_gc_throughput_avg->IsNull());
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EXPECT_TRUE(young_gc_tracing_throughput_avg->IsNull());
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EXPECT_TRUE(young_gc_scanned_bytes->IsNull());
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EXPECT_TRUE(young_gc_scanned_bytes_delta->IsNull());
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EXPECT_TRUE(young_gc_freed_bytes->IsNull());
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EXPECT_TRUE(young_gc_freed_bytes_delta->IsNull());
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EXPECT_TRUE(young_gc_duration->IsNull());
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EXPECT_TRUE(young_gc_duration_delta->IsNull());
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}
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} else {
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// Check that all metrics are null after trigerring the collection.
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EXPECT_TRUE(full_gc_collection_time->IsNull());
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EXPECT_TRUE(full_gc_count->IsNull());
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EXPECT_TRUE(full_gc_count_delta->IsNull());
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EXPECT_TRUE(full_gc_throughput->IsNull());
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EXPECT_TRUE(full_gc_tracing_throughput->IsNull());
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EXPECT_TRUE(full_gc_throughput_avg->IsNull());
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EXPECT_TRUE(full_gc_tracing_throughput_avg->IsNull());
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EXPECT_TRUE(full_gc_scanned_bytes->IsNull());
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EXPECT_TRUE(full_gc_scanned_bytes_delta->IsNull());
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EXPECT_TRUE(full_gc_freed_bytes->IsNull());
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EXPECT_TRUE(full_gc_freed_bytes_delta->IsNull());
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EXPECT_TRUE(full_gc_duration->IsNull());
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EXPECT_TRUE(full_gc_duration_delta->IsNull());
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EXPECT_TRUE(young_gc_collection_time->IsNull());
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EXPECT_TRUE(young_gc_count->IsNull());
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EXPECT_TRUE(young_gc_count_delta->IsNull());
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EXPECT_TRUE(young_gc_throughput->IsNull());
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EXPECT_TRUE(young_gc_tracing_throughput->IsNull());
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EXPECT_TRUE(young_gc_throughput_avg->IsNull());
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EXPECT_TRUE(young_gc_tracing_throughput_avg->IsNull());
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EXPECT_TRUE(young_gc_scanned_bytes->IsNull());
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EXPECT_TRUE(young_gc_scanned_bytes_delta->IsNull());
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EXPECT_TRUE(young_gc_freed_bytes->IsNull());
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EXPECT_TRUE(young_gc_freed_bytes_delta->IsNull());
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EXPECT_TRUE(young_gc_duration->IsNull());
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EXPECT_TRUE(young_gc_duration_delta->IsNull());
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}
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}
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class ZygoteHeapTest : public CommonRuntimeTest {
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public:
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ZygoteHeapTest() {
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use_boot_image_ = true; // Make the Runtime creation cheaper.
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}
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void SetUpRuntimeOptions(RuntimeOptions* options) override {
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CommonRuntimeTest::SetUpRuntimeOptions(options);
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options->push_back(std::make_pair("-Xzygote", nullptr));
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}
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};
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TEST_F(ZygoteHeapTest, PreZygoteFork) {
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// Exercise Heap::PreZygoteFork() to check it does not crash.
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Runtime::Current()->GetHeap()->PreZygoteFork();
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}
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} // namespace gc
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} // namespace art
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