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516 lines
18 KiB
516 lines
18 KiB
/*
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* Copyright (C) 2009 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 "indirect_reference_table-inl.h"
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#include "android-base/stringprintf.h"
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#include "class_linker-inl.h"
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#include "common_runtime_test.h"
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#include "mirror/class-alloc-inl.h"
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#include "mirror/object-inl.h"
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#include "scoped_thread_state_change-inl.h"
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namespace art {
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using android::base::StringPrintf;
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class IndirectReferenceTableTest : public CommonRuntimeTest {};
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static void CheckDump(IndirectReferenceTable* irt, size_t num_objects, size_t num_unique)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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std::ostringstream oss;
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irt->Dump(oss);
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if (num_objects == 0) {
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EXPECT_EQ(oss.str().find("java.lang.Object"), std::string::npos) << oss.str();
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} else if (num_objects == 1) {
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EXPECT_NE(oss.str().find("1 of java.lang.Object"), std::string::npos) << oss.str();
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} else {
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EXPECT_NE(oss.str().find(StringPrintf("%zd of java.lang.Object (%zd unique instances)",
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num_objects, num_unique)),
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std::string::npos)
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<< "\n Expected number of objects: " << num_objects
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<< "\n Expected unique objects: " << num_unique << "\n"
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<< oss.str();
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}
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}
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TEST_F(IndirectReferenceTableTest, BasicTest) {
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// This will lead to error messages in the log.
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ScopedLogSeverity sls(LogSeverity::FATAL);
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ScopedObjectAccess soa(Thread::Current());
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static const size_t kTableMax = 20;
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std::string error_msg;
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IndirectReferenceTable irt(kTableMax,
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kGlobal,
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IndirectReferenceTable::ResizableCapacity::kNo,
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&error_msg);
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ASSERT_TRUE(irt.IsValid()) << error_msg;
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StackHandleScope<5> 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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ASSERT_TRUE(c != nullptr);
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Handle<mirror::Object> obj0 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj0 != nullptr);
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Handle<mirror::Object> obj1 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj1 != nullptr);
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Handle<mirror::Object> obj2 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj2 != nullptr);
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Handle<mirror::Object> obj3 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj3 != nullptr);
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const IRTSegmentState cookie = kIRTFirstSegment;
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CheckDump(&irt, 0, 0);
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IndirectRef iref0 = (IndirectRef) 0x11110;
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EXPECT_FALSE(irt.Remove(cookie, iref0)) << "unexpectedly successful removal";
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// Add three, check, remove in the order in which they were added.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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CheckDump(&irt, 1, 1);
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IndirectRef iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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CheckDump(&irt, 2, 2);
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IndirectRef iref2 = irt.Add(cookie, obj2.Get(), &error_msg);
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EXPECT_TRUE(iref2 != nullptr);
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CheckDump(&irt, 3, 3);
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EXPECT_OBJ_PTR_EQ(obj0.Get(), irt.Get(iref0));
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EXPECT_OBJ_PTR_EQ(obj1.Get(), irt.Get(iref1));
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EXPECT_OBJ_PTR_EQ(obj2.Get(), irt.Get(iref2));
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EXPECT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 2, 2);
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EXPECT_TRUE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 1, 1);
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EXPECT_TRUE(irt.Remove(cookie, iref2));
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CheckDump(&irt, 0, 0);
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// Table should be empty now.
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EXPECT_EQ(0U, irt.Capacity());
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// Check that the entry off the end of the list is not valid.
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// (CheckJNI shall abort for such entries.)
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EXPECT_FALSE(irt.IsValidReference(iref0, &error_msg));
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// Add three, remove in the opposite order.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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iref2 = irt.Add(cookie, obj2.Get(), &error_msg);
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EXPECT_TRUE(iref2 != nullptr);
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CheckDump(&irt, 3, 3);
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ASSERT_TRUE(irt.Remove(cookie, iref2));
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CheckDump(&irt, 2, 2);
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ASSERT_TRUE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 0, 0);
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// Table should be empty now.
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ASSERT_EQ(0U, irt.Capacity());
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// Add three, remove middle / middle / bottom / top. (Second attempt
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// to remove middle should fail.)
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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iref2 = irt.Add(cookie, obj2.Get(), &error_msg);
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EXPECT_TRUE(iref2 != nullptr);
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CheckDump(&irt, 3, 3);
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ASSERT_EQ(3U, irt.Capacity());
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ASSERT_TRUE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 2, 2);
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ASSERT_FALSE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 2, 2);
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// Check that the reference to the hole is not valid.
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EXPECT_FALSE(irt.IsValidReference(iref1, &error_msg));
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ASSERT_TRUE(irt.Remove(cookie, iref2));
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 0, 0);
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// Table should be empty now.
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ASSERT_EQ(0U, irt.Capacity());
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// Add four entries. Remove #1, add new entry, verify that table size
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// is still 4 (i.e. holes are getting filled). Remove #1 and #3, verify
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// that we delete one and don't hole-compact the other.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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iref2 = irt.Add(cookie, obj2.Get(), &error_msg);
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EXPECT_TRUE(iref2 != nullptr);
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IndirectRef iref3 = irt.Add(cookie, obj3.Get(), &error_msg);
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EXPECT_TRUE(iref3 != nullptr);
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CheckDump(&irt, 4, 4);
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ASSERT_TRUE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 3, 3);
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iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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ASSERT_EQ(4U, irt.Capacity()) << "hole not filled";
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CheckDump(&irt, 4, 4);
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ASSERT_TRUE(irt.Remove(cookie, iref1));
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CheckDump(&irt, 3, 3);
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ASSERT_TRUE(irt.Remove(cookie, iref3));
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CheckDump(&irt, 2, 2);
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ASSERT_EQ(3U, irt.Capacity()) << "should be 3 after two deletions";
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ASSERT_TRUE(irt.Remove(cookie, iref2));
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 0, 0);
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ASSERT_EQ(0U, irt.Capacity()) << "not empty after split remove";
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// Add an entry, remove it, add a new entry, and try to use the original
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// iref. They have the same slot number but are for different objects.
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// With the extended checks in place, this should fail.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 0, 0);
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iref1 = irt.Add(cookie, obj1.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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CheckDump(&irt, 1, 1);
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ASSERT_FALSE(irt.Remove(cookie, iref0)) << "mismatched del succeeded";
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref1)) << "switched del failed";
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ASSERT_EQ(0U, irt.Capacity()) << "switching del not empty";
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CheckDump(&irt, 0, 0);
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// Same as above, but with the same object. A more rigorous checker
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// (e.g. with slot serialization) will catch this.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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CheckDump(&irt, 0, 0);
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iref1 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref1 != nullptr);
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CheckDump(&irt, 1, 1);
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if (iref0 != iref1) {
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// Try 0, should not work.
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ASSERT_FALSE(irt.Remove(cookie, iref0)) << "temporal del succeeded";
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}
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ASSERT_TRUE(irt.Remove(cookie, iref1)) << "temporal cleanup failed";
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ASSERT_EQ(0U, irt.Capacity()) << "temporal del not empty";
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CheckDump(&irt, 0, 0);
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// Stale reference is not valid.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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EXPECT_TRUE(iref0 != nullptr);
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CheckDump(&irt, 1, 1);
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ASSERT_TRUE(irt.Remove(cookie, iref0));
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EXPECT_FALSE(irt.IsValidReference(iref0, &error_msg)) << "stale lookup succeeded";
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CheckDump(&irt, 0, 0);
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// Test table resizing.
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// These ones fit...
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static const size_t kTableInitial = kTableMax / 2;
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IndirectRef manyRefs[kTableInitial];
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for (size_t i = 0; i < kTableInitial; i++) {
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manyRefs[i] = irt.Add(cookie, obj0.Get(), &error_msg);
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ASSERT_TRUE(manyRefs[i] != nullptr) << "Failed adding " << i;
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CheckDump(&irt, i + 1, 1);
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}
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// ...this one causes overflow.
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iref0 = irt.Add(cookie, obj0.Get(), &error_msg);
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ASSERT_TRUE(iref0 != nullptr);
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ASSERT_EQ(kTableInitial + 1, irt.Capacity());
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CheckDump(&irt, kTableInitial + 1, 1);
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for (size_t i = 0; i < kTableInitial; i++) {
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ASSERT_TRUE(irt.Remove(cookie, manyRefs[i])) << "failed removing " << i;
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CheckDump(&irt, kTableInitial - i, 1);
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}
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// Because of removal order, should have 11 entries, 10 of them holes.
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ASSERT_EQ(kTableInitial + 1, irt.Capacity());
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ASSERT_TRUE(irt.Remove(cookie, iref0)) << "multi-remove final failed";
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ASSERT_EQ(0U, irt.Capacity()) << "multi-del not empty";
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CheckDump(&irt, 0, 0);
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}
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TEST_F(IndirectReferenceTableTest, Holes) {
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// Test the explicitly named cases from the IRT implementation:
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//
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// 1) Segment with holes (current_num_holes_ > 0), push new segment, add/remove reference
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// 2) Segment with holes (current_num_holes_ > 0), pop segment, add/remove reference
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// 3) Segment with holes (current_num_holes_ > 0), push new segment, pop segment, add/remove
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// reference
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// 4) Empty segment, push new segment, create a hole, pop a segment, add/remove a reference
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// 5) Base segment, push new segment, create a hole, pop a segment, push new segment, add/remove
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// reference
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ScopedObjectAccess soa(Thread::Current());
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static const size_t kTableMax = 10;
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StackHandleScope<6> hs(soa.Self());
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Handle<mirror::Class> c = hs.NewHandle(
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class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
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ASSERT_TRUE(c != nullptr);
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Handle<mirror::Object> obj0 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj0 != nullptr);
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Handle<mirror::Object> obj1 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj1 != nullptr);
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Handle<mirror::Object> obj2 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj2 != nullptr);
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Handle<mirror::Object> obj3 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj3 != nullptr);
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Handle<mirror::Object> obj4 = hs.NewHandle(c->AllocObject(soa.Self()));
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ASSERT_TRUE(obj4 != nullptr);
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std::string error_msg;
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// 1) Segment with holes (current_num_holes_ > 0), push new segment, add/remove reference.
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{
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IndirectReferenceTable irt(kTableMax,
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kGlobal,
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IndirectReferenceTable::ResizableCapacity::kNo,
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&error_msg);
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ASSERT_TRUE(irt.IsValid()) << error_msg;
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const IRTSegmentState cookie0 = kIRTFirstSegment;
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CheckDump(&irt, 0, 0);
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IndirectRef iref0 = irt.Add(cookie0, obj0.Get(), &error_msg);
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IndirectRef iref1 = irt.Add(cookie0, obj1.Get(), &error_msg);
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IndirectRef iref2 = irt.Add(cookie0, obj2.Get(), &error_msg);
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EXPECT_TRUE(irt.Remove(cookie0, iref1));
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// New segment.
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const IRTSegmentState cookie1 = irt.GetSegmentState();
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IndirectRef iref3 = irt.Add(cookie1, obj3.Get(), &error_msg);
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// Must not have filled the previous hole.
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EXPECT_EQ(irt.Capacity(), 4u);
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EXPECT_FALSE(irt.IsValidReference(iref1, &error_msg));
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CheckDump(&irt, 3, 3);
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UNUSED(iref0, iref1, iref2, iref3);
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}
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// 2) Segment with holes (current_num_holes_ > 0), pop segment, add/remove reference
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{
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IndirectReferenceTable irt(kTableMax,
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kGlobal,
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IndirectReferenceTable::ResizableCapacity::kNo,
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&error_msg);
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ASSERT_TRUE(irt.IsValid()) << error_msg;
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const IRTSegmentState cookie0 = kIRTFirstSegment;
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CheckDump(&irt, 0, 0);
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IndirectRef iref0 = irt.Add(cookie0, obj0.Get(), &error_msg);
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// New segment.
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const IRTSegmentState cookie1 = irt.GetSegmentState();
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IndirectRef iref1 = irt.Add(cookie1, obj1.Get(), &error_msg);
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IndirectRef iref2 = irt.Add(cookie1, obj2.Get(), &error_msg);
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IndirectRef iref3 = irt.Add(cookie1, obj3.Get(), &error_msg);
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EXPECT_TRUE(irt.Remove(cookie1, iref2));
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// Pop segment.
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irt.SetSegmentState(cookie1);
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IndirectRef iref4 = irt.Add(cookie1, obj4.Get(), &error_msg);
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EXPECT_EQ(irt.Capacity(), 2u);
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EXPECT_FALSE(irt.IsValidReference(iref2, &error_msg));
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CheckDump(&irt, 2, 2);
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UNUSED(iref0, iref1, iref2, iref3, iref4);
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}
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// 3) Segment with holes (current_num_holes_ > 0), push new segment, pop segment, add/remove
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// reference.
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{
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IndirectReferenceTable irt(kTableMax,
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kGlobal,
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IndirectReferenceTable::ResizableCapacity::kNo,
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&error_msg);
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ASSERT_TRUE(irt.IsValid()) << error_msg;
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const IRTSegmentState cookie0 = kIRTFirstSegment;
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CheckDump(&irt, 0, 0);
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IndirectRef iref0 = irt.Add(cookie0, obj0.Get(), &error_msg);
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// New segment.
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const IRTSegmentState cookie1 = irt.GetSegmentState();
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IndirectRef iref1 = irt.Add(cookie1, obj1.Get(), &error_msg);
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IndirectRef iref2 = irt.Add(cookie1, obj2.Get(), &error_msg);
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EXPECT_TRUE(irt.Remove(cookie1, iref1));
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// New segment.
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const IRTSegmentState cookie2 = irt.GetSegmentState();
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IndirectRef iref3 = irt.Add(cookie2, obj3.Get(), &error_msg);
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// Pop segment.
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irt.SetSegmentState(cookie2);
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IndirectRef iref4 = irt.Add(cookie1, obj4.Get(), &error_msg);
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EXPECT_EQ(irt.Capacity(), 3u);
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EXPECT_FALSE(irt.IsValidReference(iref1, &error_msg));
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CheckDump(&irt, 3, 3);
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UNUSED(iref0, iref1, iref2, iref3, iref4);
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}
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// 4) Empty segment, push new segment, create a hole, pop a segment, add/remove a reference.
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{
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IndirectReferenceTable irt(kTableMax,
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kGlobal,
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IndirectReferenceTable::ResizableCapacity::kNo,
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&error_msg);
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ASSERT_TRUE(irt.IsValid()) << error_msg;
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const IRTSegmentState cookie0 = kIRTFirstSegment;
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CheckDump(&irt, 0, 0);
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IndirectRef iref0 = irt.Add(cookie0, obj0.Get(), &error_msg);
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// New segment.
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const IRTSegmentState cookie1 = irt.GetSegmentState();
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IndirectRef iref1 = irt.Add(cookie1, obj1.Get(), &error_msg);
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EXPECT_TRUE(irt.Remove(cookie1, iref1));
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// Emptied segment, push new one.
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const IRTSegmentState cookie2 = irt.GetSegmentState();
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IndirectRef iref2 = irt.Add(cookie1, obj1.Get(), &error_msg);
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IndirectRef iref3 = irt.Add(cookie1, obj2.Get(), &error_msg);
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IndirectRef iref4 = irt.Add(cookie1, obj3.Get(), &error_msg);
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EXPECT_TRUE(irt.Remove(cookie1, iref3));
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// Pop segment.
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UNUSED(cookie2);
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irt.SetSegmentState(cookie1);
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IndirectRef iref5 = irt.Add(cookie1, obj4.Get(), &error_msg);
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EXPECT_EQ(irt.Capacity(), 2u);
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|
EXPECT_FALSE(irt.IsValidReference(iref3, &error_msg));
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|
CheckDump(&irt, 2, 2);
|
|
|
|
UNUSED(iref0, iref1, iref2, iref3, iref4, iref5);
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|
}
|
|
|
|
// 5) Base segment, push new segment, create a hole, pop a segment, push new segment, add/remove
|
|
// reference
|
|
{
|
|
IndirectReferenceTable irt(kTableMax,
|
|
kGlobal,
|
|
IndirectReferenceTable::ResizableCapacity::kNo,
|
|
&error_msg);
|
|
ASSERT_TRUE(irt.IsValid()) << error_msg;
|
|
|
|
const IRTSegmentState cookie0 = kIRTFirstSegment;
|
|
|
|
CheckDump(&irt, 0, 0);
|
|
|
|
IndirectRef iref0 = irt.Add(cookie0, obj0.Get(), &error_msg);
|
|
|
|
// New segment.
|
|
const IRTSegmentState cookie1 = irt.GetSegmentState();
|
|
|
|
IndirectRef iref1 = irt.Add(cookie1, obj1.Get(), &error_msg);
|
|
IndirectRef iref2 = irt.Add(cookie1, obj1.Get(), &error_msg);
|
|
IndirectRef iref3 = irt.Add(cookie1, obj2.Get(), &error_msg);
|
|
|
|
EXPECT_TRUE(irt.Remove(cookie1, iref2));
|
|
|
|
// Pop segment.
|
|
irt.SetSegmentState(cookie1);
|
|
|
|
// Push segment.
|
|
const IRTSegmentState cookie1_second = irt.GetSegmentState();
|
|
UNUSED(cookie1_second);
|
|
|
|
IndirectRef iref4 = irt.Add(cookie1, obj3.Get(), &error_msg);
|
|
|
|
EXPECT_EQ(irt.Capacity(), 2u);
|
|
EXPECT_FALSE(irt.IsValidReference(iref3, &error_msg));
|
|
CheckDump(&irt, 2, 2);
|
|
|
|
UNUSED(iref0, iref1, iref2, iref3, iref4);
|
|
}
|
|
}
|
|
|
|
TEST_F(IndirectReferenceTableTest, Resize) {
|
|
ScopedObjectAccess soa(Thread::Current());
|
|
static const size_t kTableMax = 512;
|
|
|
|
StackHandleScope<2> hs(soa.Self());
|
|
Handle<mirror::Class> c = hs.NewHandle(
|
|
class_linker_->FindSystemClass(soa.Self(), "Ljava/lang/Object;"));
|
|
ASSERT_TRUE(c != nullptr);
|
|
Handle<mirror::Object> obj0 = hs.NewHandle(c->AllocObject(soa.Self()));
|
|
ASSERT_TRUE(obj0 != nullptr);
|
|
|
|
std::string error_msg;
|
|
IndirectReferenceTable irt(kTableMax,
|
|
kLocal,
|
|
IndirectReferenceTable::ResizableCapacity::kYes,
|
|
&error_msg);
|
|
ASSERT_TRUE(irt.IsValid()) << error_msg;
|
|
|
|
CheckDump(&irt, 0, 0);
|
|
const IRTSegmentState cookie = kIRTFirstSegment;
|
|
|
|
for (size_t i = 0; i != kTableMax + 1; ++i) {
|
|
irt.Add(cookie, obj0.Get(), &error_msg);
|
|
}
|
|
|
|
EXPECT_EQ(irt.Capacity(), kTableMax + 1);
|
|
}
|
|
|
|
} // namespace art
|