| /* |
| * Copyright 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. |
| */ |
| |
| #include "jit_compiler.h" |
| |
| #include "android-base/stringprintf.h" |
| |
| #include "arch/instruction_set.h" |
| #include "arch/instruction_set_features.h" |
| #include "art_method-inl.h" |
| #include "base/logging.h" // For VLOG |
| #include "base/stringpiece.h" |
| #include "base/systrace.h" |
| #include "base/time_utils.h" |
| #include "base/timing_logger.h" |
| #include "base/unix_file/fd_file.h" |
| #include "debug/elf_debug_writer.h" |
| #include "driver/compiler_driver.h" |
| #include "driver/compiler_options.h" |
| #include "jit/debugger_interface.h" |
| #include "jit/jit.h" |
| #include "jit/jit_code_cache.h" |
| #include "oat_file-inl.h" |
| #include "oat_quick_method_header.h" |
| #include "object_lock.h" |
| #include "optimizing/register_allocator.h" |
| #include "thread_list.h" |
| |
| namespace art { |
| namespace jit { |
| |
| JitCompiler* JitCompiler::Create() { |
| return new JitCompiler(); |
| } |
| |
| extern "C" void* jit_load(bool* generate_debug_info) { |
| VLOG(jit) << "loading jit compiler"; |
| auto* const jit_compiler = JitCompiler::Create(); |
| CHECK(jit_compiler != nullptr); |
| *generate_debug_info = jit_compiler->GetCompilerOptions()->GetGenerateDebugInfo(); |
| VLOG(jit) << "Done loading jit compiler"; |
| return jit_compiler; |
| } |
| |
| extern "C" void jit_unload(void* handle) { |
| DCHECK(handle != nullptr); |
| delete reinterpret_cast<JitCompiler*>(handle); |
| } |
| |
| extern "C" bool jit_compile_method( |
| void* handle, ArtMethod* method, Thread* self, bool osr) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| auto* jit_compiler = reinterpret_cast<JitCompiler*>(handle); |
| DCHECK(jit_compiler != nullptr); |
| return jit_compiler->CompileMethod(self, method, osr); |
| } |
| |
| extern "C" void jit_types_loaded(void* handle, mirror::Class** types, size_t count) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| auto* jit_compiler = reinterpret_cast<JitCompiler*>(handle); |
| DCHECK(jit_compiler != nullptr); |
| if (jit_compiler->GetCompilerOptions()->GetGenerateDebugInfo()) { |
| const ArrayRef<mirror::Class*> types_array(types, count); |
| std::vector<uint8_t> elf_file = debug::WriteDebugElfFileForClasses( |
| kRuntimeISA, jit_compiler->GetCompilerDriver()->GetInstructionSetFeatures(), types_array); |
| MutexLock mu(Thread::Current(), *Locks::native_debug_interface_lock_); |
| // We never free debug info for types, so we don't need to provide a handle |
| // (which would have been otherwise used as identifier to remove it later). |
| AddNativeDebugInfoForJit(nullptr /* handle */, elf_file); |
| } |
| } |
| |
| JitCompiler::JitCompiler() { |
| compiler_options_.reset(new CompilerOptions()); |
| // Special case max code units for inlining, whose default is "unset" (implictly |
| // meaning no limit). Do this before parsing the actuall passed options. |
| compiler_options_->SetInlineMaxCodeUnits(CompilerOptions::kDefaultInlineMaxCodeUnits); |
| { |
| std::string error_msg; |
| if (!compiler_options_->ParseCompilerOptions(Runtime::Current()->GetCompilerOptions(), |
| true /* ignore_unrecognized */, |
| &error_msg)) { |
| LOG(FATAL) << error_msg; |
| UNREACHABLE(); |
| } |
| } |
| // JIT is never PIC, no matter what the runtime compiler options specify. |
| compiler_options_->SetNonPic(); |
| |
| // Set debuggability based on the runtime value. |
| compiler_options_->SetDebuggable(Runtime::Current()->IsJavaDebuggable()); |
| |
| const InstructionSet instruction_set = kRuntimeISA; |
| for (const StringPiece option : Runtime::Current()->GetCompilerOptions()) { |
| VLOG(compiler) << "JIT compiler option " << option; |
| std::string error_msg; |
| if (option.starts_with("--instruction-set-variant=")) { |
| StringPiece str = option.substr(strlen("--instruction-set-variant=")).data(); |
| VLOG(compiler) << "JIT instruction set variant " << str; |
| instruction_set_features_ = InstructionSetFeatures::FromVariant( |
| instruction_set, str.as_string(), &error_msg); |
| if (instruction_set_features_ == nullptr) { |
| LOG(WARNING) << "Error parsing " << option << " message=" << error_msg; |
| } |
| } else if (option.starts_with("--instruction-set-features=")) { |
| StringPiece str = option.substr(strlen("--instruction-set-features=")).data(); |
| VLOG(compiler) << "JIT instruction set features " << str; |
| if (instruction_set_features_ == nullptr) { |
| instruction_set_features_ = InstructionSetFeatures::FromVariant( |
| instruction_set, "default", &error_msg); |
| if (instruction_set_features_ == nullptr) { |
| LOG(WARNING) << "Error parsing " << option << " message=" << error_msg; |
| } |
| } |
| instruction_set_features_ = |
| instruction_set_features_->AddFeaturesFromString(str.as_string(), &error_msg); |
| if (instruction_set_features_ == nullptr) { |
| LOG(WARNING) << "Error parsing " << option << " message=" << error_msg; |
| } |
| } |
| } |
| if (instruction_set_features_ == nullptr) { |
| instruction_set_features_ = InstructionSetFeatures::FromCppDefines(); |
| } |
| compiler_driver_.reset(new CompilerDriver( |
| compiler_options_.get(), |
| /* verification_results */ nullptr, |
| Compiler::kOptimizing, |
| instruction_set, |
| instruction_set_features_.get(), |
| /* image_classes */ nullptr, |
| /* compiled_classes */ nullptr, |
| /* compiled_methods */ nullptr, |
| /* thread_count */ 1, |
| /* swap_fd */ -1, |
| /* profile_compilation_info */ nullptr)); |
| // Disable dedupe so we can remove compiled methods. |
| compiler_driver_->SetDedupeEnabled(false); |
| compiler_driver_->SetSupportBootImageFixup(false); |
| |
| size_t thread_count = compiler_driver_->GetThreadCount(); |
| if (compiler_options_->GetGenerateDebugInfo()) { |
| DCHECK_EQ(thread_count, 1u) |
| << "Generating debug info only works with one compiler thread"; |
| jit_logger_.reset(new JitLogger()); |
| jit_logger_->OpenLog(); |
| } |
| } |
| |
| JitCompiler::~JitCompiler() { |
| if (compiler_options_->GetGenerateDebugInfo()) { |
| jit_logger_->CloseLog(); |
| } |
| } |
| |
| bool JitCompiler::CompileMethod(Thread* self, ArtMethod* method, bool osr) { |
| SCOPED_TRACE << "JIT compiling " << method->PrettyMethod(); |
| |
| DCHECK(!method->IsProxyMethod()); |
| DCHECK(method->GetDeclaringClass()->IsResolved()); |
| |
| TimingLogger logger( |
| "JIT compiler timing logger", true, VLOG_IS_ON(jit), TimingLogger::TimingKind::kThreadCpu); |
| self->AssertNoPendingException(); |
| Runtime* runtime = Runtime::Current(); |
| |
| // Do the compilation. |
| bool success = false; |
| { |
| TimingLogger::ScopedTiming t2("Compiling", &logger); |
| JitCodeCache* const code_cache = runtime->GetJit()->GetCodeCache(); |
| success = compiler_driver_->GetCompiler()->JitCompile( |
| self, code_cache, method, osr, jit_logger_.get()); |
| } |
| |
| // Trim maps to reduce memory usage. |
| // TODO: move this to an idle phase. |
| { |
| TimingLogger::ScopedTiming t2("TrimMaps", &logger); |
| runtime->GetJitArenaPool()->TrimMaps(); |
| } |
| |
| runtime->GetJit()->AddTimingLogger(logger); |
| return success; |
| } |
| |
| } // namespace jit |
| } // namespace art |