blob: 06e16e40d26fe902cab01af98438a1026ecce058 [file] [log] [blame]
* Copyright (C) 2015 The Android Open Source Project
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include <set>
#include <unordered_map>
#include <unordered_set>
#include "base/bit_vector.h"
#include "base/mutex.h"
#include "dex/invoke_type.h"
#include "dex/method_reference.h"
#include "handle.h"
#include "quicken_info.h"
namespace art {
class CompiledMethod;
class CompilerDriver;
class DexCompilationUnit;
class DexFile;
namespace dex {
struct CodeItem;
} // namespace dex
namespace mirror {
class ClassLoader;
} // namespace mirror
namespace optimizer {
class DexToDexCompiler {
enum class CompilationLevel {
kDontDexToDexCompile, // Only meaning wrt image time interpretation.
kOptimize // Perform peep-hole optimizations.
explicit DexToDexCompiler(CompilerDriver* driver);
CompiledMethod* CompileMethod(const dex::CodeItem* code_item,
uint32_t access_flags,
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
Handle<mirror::ClassLoader> class_loader,
const DexFile& dex_file,
const CompilationLevel compilation_level) WARN_UNUSED;
void MarkForCompilation(Thread* self,
const MethodReference& method_ref);
void ClearState();
// Unquicken all methods that have conflicting quicken info. This is not done during the
// quickening process to avoid race conditions.
void UnquickenConflictingMethods();
CompilerDriver* GetDriver() {
return driver_;
bool ShouldCompileMethod(const MethodReference& ref);
// Return the number of code items to quicken.
size_t NumCodeItemsToQuicken(Thread* self) const;
void SetDexFiles(const std::vector<const DexFile*>& dex_files);
// Holds the state for compiling a single method.
struct CompilationState;
// Quicken state for a code item, may be referenced by multiple methods.
struct QuickenState {
std::vector<MethodReference> methods_;
std::vector<uint8_t> quicken_data_;
bool optimized_return_void_ = false;
bool conflict_ = false;
BitVector* GetOrAddBitVectorForDex(const DexFile* dex_file) REQUIRES(lock_);
CompilerDriver* const driver_;
// State for adding methods (should this be in its own class?).
const DexFile* active_dex_file_ = nullptr;
BitVector* active_bit_vector_ = nullptr;
// Lock that guards duplicate code items and the bitmap.
mutable Mutex lock_;
// Record what method references are going to get quickened.
std::unordered_map<const DexFile*, BitVector> should_quicken_;
// Guarded by lock_ during writing, accessed without a lock during quickening.
// This is safe because no thread is adding to the shared code items during the quickening phase.
std::unordered_set<const dex::CodeItem*> shared_code_items_;
// Blacklisted code items are unquickened in UnquickenConflictingMethods.
std::unordered_map<const dex::CodeItem*, QuickenState> shared_code_item_quicken_info_
// Number of added code items.
size_t num_code_items_ GUARDED_BY(lock_) = 0u;
std::ostream& operator<<(std::ostream& os, const DexToDexCompiler::CompilationLevel& rhs);
} // namespace optimizer
} // namespace art