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/*
* Copyright (C) 2014 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
*
* 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.
*/
#ifndef ART_COMPILER_COMPILER_H_
#define ART_COMPILER_COMPILER_H_
#include "dex_file.h"
#include "os.h"
namespace art {
class ArtMethod;
class Backend;
struct CompilationUnit;
class CompilerDriver;
class CompiledMethod;
class OatWriter;
class Compiler {
public:
enum Kind {
kQuick,
kOptimizing
};
static Compiler* Create(CompilerDriver* driver, Kind kind);
virtual void Init() = 0;
virtual void UnInit() const = 0;
virtual bool CanCompileMethod(uint32_t method_idx, const DexFile& dex_file, CompilationUnit* cu)
const = 0;
virtual CompiledMethod* Compile(const DexFile::CodeItem* code_item,
uint32_t access_flags,
InvokeType invoke_type,
uint16_t class_def_idx,
uint32_t method_idx,
jobject class_loader,
const DexFile& dex_file) const = 0;
virtual CompiledMethod* JniCompile(uint32_t access_flags,
uint32_t method_idx,
const DexFile& dex_file) const = 0;
virtual uintptr_t GetEntryPointOf(ArtMethod* method) const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) = 0;
uint64_t GetMaximumCompilationTimeBeforeWarning() const {
return maximum_compilation_time_before_warning_;
}
virtual void InitCompilationUnit(CompilationUnit& cu) const = 0;
virtual ~Compiler() {}
/*
* @brief Generate and return Dwarf CFI initialization, if supported by the
* backend.
* @param driver CompilerDriver for this compile.
* @returns nullptr if not supported by backend or a vector of bytes for CFI DWARF
* information.
* @note This is used for backtrace information in generated code.
*/
virtual std::vector<uint8_t>* GetCallFrameInformationInitialization(const CompilerDriver& driver)
const {
UNUSED(driver);
return nullptr;
}
// Returns whether the method to compile is such a pathological case that
// it's not worth compiling.
static bool IsPathologicalCase(const DexFile::CodeItem& code_item,
uint32_t method_idx,
const DexFile& dex_file);
protected:
explicit Compiler(CompilerDriver* driver, uint64_t warning) :
driver_(driver), maximum_compilation_time_before_warning_(warning) {
}
CompilerDriver* GetCompilerDriver() const {
return driver_;
}
private:
CompilerDriver* const driver_;
const uint64_t maximum_compilation_time_before_warning_;
DISALLOW_COPY_AND_ASSIGN(Compiler);
};
} // namespace art
#endif // ART_COMPILER_COMPILER_H_
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