| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not read this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "gtest/gtest.h" |
| #include "nodes.h" |
| #include "primitive.h" |
| |
| namespace art { |
| |
| /** |
| * Tests for the SideEffects class. |
| */ |
| |
| // |
| // Helper methods. |
| // |
| |
| void testWriteAndReadSanity(SideEffects write, SideEffects read) { |
| EXPECT_FALSE(write.DoesNothing()); |
| EXPECT_FALSE(read.DoesNothing()); |
| |
| EXPECT_TRUE(write.DoesAnyWrite()); |
| EXPECT_FALSE(write.DoesAnyRead()); |
| EXPECT_FALSE(read.DoesAnyWrite()); |
| EXPECT_TRUE(read.DoesAnyRead()); |
| |
| // All-dependences. |
| SideEffects all = SideEffects::All(); |
| EXPECT_TRUE(all.MayDependOn(write)); |
| EXPECT_FALSE(write.MayDependOn(all)); |
| EXPECT_FALSE(all.MayDependOn(read)); |
| EXPECT_TRUE(read.MayDependOn(all)); |
| |
| // None-dependences. |
| SideEffects none = SideEffects::None(); |
| EXPECT_FALSE(none.MayDependOn(write)); |
| EXPECT_FALSE(write.MayDependOn(none)); |
| EXPECT_FALSE(none.MayDependOn(read)); |
| EXPECT_FALSE(read.MayDependOn(none)); |
| } |
| |
| void testWriteAndReadDependence(SideEffects write, SideEffects read) { |
| testWriteAndReadSanity(write, read); |
| |
| // Dependence only in one direction. |
| EXPECT_FALSE(write.MayDependOn(read)); |
| EXPECT_TRUE(read.MayDependOn(write)); |
| } |
| |
| void testNoWriteAndReadDependence(SideEffects write, SideEffects read) { |
| testWriteAndReadSanity(write, read); |
| |
| // No dependence in any direction. |
| EXPECT_FALSE(write.MayDependOn(read)); |
| EXPECT_FALSE(read.MayDependOn(write)); |
| } |
| |
| // |
| // Actual tests. |
| // |
| |
| TEST(SideEffectsTest, All) { |
| SideEffects all = SideEffects::All(); |
| EXPECT_TRUE(all.DoesAnyWrite()); |
| EXPECT_TRUE(all.DoesAnyRead()); |
| EXPECT_FALSE(all.DoesNothing()); |
| EXPECT_TRUE(all.DoesAllReadWrite()); |
| } |
| |
| TEST(SideEffectsTest, None) { |
| SideEffects none = SideEffects::None(); |
| EXPECT_FALSE(none.DoesAnyWrite()); |
| EXPECT_FALSE(none.DoesAnyRead()); |
| EXPECT_TRUE(none.DoesNothing()); |
| EXPECT_FALSE(none.DoesAllReadWrite()); |
| } |
| |
| TEST(SideEffectsTest, DependencesAndNoDependences) { |
| // Apply test to each individual primitive type. |
| for (Primitive::Type type = Primitive::kPrimNot; |
| type < Primitive::kPrimVoid; |
| type = Primitive::Type(type + 1)) { |
| // Same primitive type and access type: proper write/read dep. |
| testWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(type, false), |
| SideEffects::FieldReadOfType(type, false)); |
| testWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(type), |
| SideEffects::ArrayReadOfType(type)); |
| // Same primitive type but different access type: no write/read dep. |
| testNoWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(type, false), |
| SideEffects::ArrayReadOfType(type)); |
| testNoWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(type), |
| SideEffects::FieldReadOfType(type, false)); |
| } |
| } |
| |
| TEST(SideEffectsTest, NoDependences) { |
| // Different primitive type, same access type: no write/read dep. |
| testNoWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(Primitive::kPrimInt, false), |
| SideEffects::FieldReadOfType(Primitive::kPrimDouble, false)); |
| testNoWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(Primitive::kPrimInt), |
| SideEffects::ArrayReadOfType(Primitive::kPrimDouble)); |
| // Everything different: no write/read dep. |
| testNoWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(Primitive::kPrimInt, false), |
| SideEffects::ArrayReadOfType(Primitive::kPrimDouble)); |
| testNoWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(Primitive::kPrimInt), |
| SideEffects::FieldReadOfType(Primitive::kPrimDouble, false)); |
| } |
| |
| TEST(SideEffectsTest, VolatileDependences) { |
| SideEffects volatile_write = |
| SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ true); |
| SideEffects any_write = |
| SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ false); |
| SideEffects volatile_read = |
| SideEffects::FieldReadOfType(Primitive::kPrimByte, /* is_volatile */ true); |
| SideEffects any_read = |
| SideEffects::FieldReadOfType(Primitive::kPrimByte, /* is_volatile */ false); |
| |
| EXPECT_FALSE(volatile_write.MayDependOn(any_read)); |
| EXPECT_TRUE(any_read.MayDependOn(volatile_write)); |
| EXPECT_TRUE(volatile_write.MayDependOn(any_write)); |
| EXPECT_FALSE(any_write.MayDependOn(volatile_write)); |
| |
| EXPECT_FALSE(volatile_read.MayDependOn(any_read)); |
| EXPECT_TRUE(any_read.MayDependOn(volatile_read)); |
| EXPECT_TRUE(volatile_read.MayDependOn(any_write)); |
| EXPECT_FALSE(any_write.MayDependOn(volatile_read)); |
| } |
| |
| TEST(SideEffectsTest, SameWidthTypes) { |
| // Type I/F. |
| testWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(Primitive::kPrimInt, /* is_volatile */ false), |
| SideEffects::FieldReadOfType(Primitive::kPrimFloat, /* is_volatile */ false)); |
| testWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(Primitive::kPrimInt), |
| SideEffects::ArrayReadOfType(Primitive::kPrimFloat)); |
| // Type L/D. |
| testWriteAndReadDependence( |
| SideEffects::FieldWriteOfType(Primitive::kPrimLong, /* is_volatile */ false), |
| SideEffects::FieldReadOfType(Primitive::kPrimDouble, /* is_volatile */ false)); |
| testWriteAndReadDependence( |
| SideEffects::ArrayWriteOfType(Primitive::kPrimLong), |
| SideEffects::ArrayReadOfType(Primitive::kPrimDouble)); |
| } |
| |
| TEST(SideEffectsTest, AllWritesAndReads) { |
| SideEffects s = SideEffects::None(); |
| // Keep taking the union of different writes and reads. |
| for (Primitive::Type type = Primitive::kPrimNot; |
| type < Primitive::kPrimVoid; |
| type = Primitive::Type(type + 1)) { |
| s = s.Union(SideEffects::FieldWriteOfType(type, /* is_volatile */ false)); |
| s = s.Union(SideEffects::ArrayWriteOfType(type)); |
| s = s.Union(SideEffects::FieldReadOfType(type, /* is_volatile */ false)); |
| s = s.Union(SideEffects::ArrayReadOfType(type)); |
| } |
| EXPECT_TRUE(s.DoesAllReadWrite()); |
| } |
| |
| TEST(SideEffectsTest, GC) { |
| SideEffects can_trigger_gc = SideEffects::CanTriggerGC(); |
| SideEffects depends_on_gc = SideEffects::DependsOnGC(); |
| SideEffects all_changes = SideEffects::AllChanges(); |
| SideEffects all_dependencies = SideEffects::AllDependencies(); |
| |
| EXPECT_TRUE(depends_on_gc.MayDependOn(can_trigger_gc)); |
| EXPECT_TRUE(depends_on_gc.Union(can_trigger_gc).MayDependOn(can_trigger_gc)); |
| EXPECT_FALSE(can_trigger_gc.MayDependOn(depends_on_gc)); |
| |
| EXPECT_TRUE(depends_on_gc.MayDependOn(all_changes)); |
| EXPECT_TRUE(depends_on_gc.Union(can_trigger_gc).MayDependOn(all_changes)); |
| EXPECT_FALSE(can_trigger_gc.MayDependOn(all_changes)); |
| |
| EXPECT_TRUE(all_changes.Includes(can_trigger_gc)); |
| EXPECT_FALSE(all_changes.Includes(depends_on_gc)); |
| EXPECT_TRUE(all_dependencies.Includes(depends_on_gc)); |
| EXPECT_FALSE(all_dependencies.Includes(can_trigger_gc)); |
| } |
| |
| TEST(SideEffectsTest, BitStrings) { |
| EXPECT_STREQ( |
| "|||||||", |
| SideEffects::None().ToString().c_str()); |
| EXPECT_STREQ( |
| "|GC|DFJISCBZL|DFJISCBZL|GC|DFJISCBZL|DFJISCBZL|", |
| SideEffects::All().ToString().c_str()); |
| EXPECT_STREQ( |
| "|||||DFJISCBZL|DFJISCBZL|", |
| SideEffects::AllWrites().ToString().c_str()); |
| EXPECT_STREQ( |
| "||DFJISCBZL|DFJISCBZL||||", |
| SideEffects::AllReads().ToString().c_str()); |
| EXPECT_STREQ( |
| "||||||L|", |
| SideEffects::FieldWriteOfType(Primitive::kPrimNot, false).ToString().c_str()); |
| EXPECT_STREQ( |
| "|||||Z||", |
| SideEffects::ArrayWriteOfType(Primitive::kPrimBoolean).ToString().c_str()); |
| EXPECT_STREQ( |
| "|||B||||", |
| SideEffects::FieldReadOfType(Primitive::kPrimByte, false).ToString().c_str()); |
| EXPECT_STREQ( |
| "||DJ|||||", // note: DJ alias |
| SideEffects::ArrayReadOfType(Primitive::kPrimDouble).ToString().c_str()); |
| SideEffects s = SideEffects::None(); |
| s = s.Union(SideEffects::FieldWriteOfType(Primitive::kPrimChar, /* is_volatile */ false)); |
| s = s.Union(SideEffects::FieldWriteOfType(Primitive::kPrimLong, /* is_volatile */ false)); |
| s = s.Union(SideEffects::ArrayWriteOfType(Primitive::kPrimShort)); |
| s = s.Union(SideEffects::FieldReadOfType(Primitive::kPrimInt, /* is_volatile */ false)); |
| s = s.Union(SideEffects::ArrayReadOfType(Primitive::kPrimFloat)); |
| s = s.Union(SideEffects::ArrayReadOfType(Primitive::kPrimDouble)); |
| EXPECT_STREQ( |
| "||DFJI|FI||S|DJC|", // note: DJ/FI alias. |
| s.ToString().c_str()); |
| } |
| |
| } // namespace art |
