blob: e75e6d27569d282760d50ee5101db5d72b359a6c [file] [log] [blame]
/*
* Copyright (C) 2011 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 <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <valgrind.h>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include "base/stl_util.h"
#include "base/stringpiece.h"
#include "base/timing_logger.h"
#include "base/unix_file/fd_file.h"
#include "class_linker.h"
#include "compiler.h"
#include "compiler_callbacks.h"
#include "dex_file-inl.h"
#include "dex/pass_driver_me_opts.h"
#include "dex/verification_results.h"
#include "driver/compiler_callbacks_impl.h"
#include "driver/compiler_driver.h"
#include "driver/compiler_options.h"
#include "elf_fixup.h"
#include "elf_stripper.h"
#include "gc/space/image_space.h"
#include "gc/space/space-inl.h"
#include "image_writer.h"
#include "leb128.h"
#include "mirror/art_method-inl.h"
#include "mirror/class-inl.h"
#include "mirror/class_loader.h"
#include "mirror/object-inl.h"
#include "mirror/object_array-inl.h"
#include "oat_writer.h"
#include "object_utils.h"
#include "os.h"
#include "runtime.h"
#include "ScopedLocalRef.h"
#include "scoped_thread_state_change.h"
#include "vector_output_stream.h"
#include "well_known_classes.h"
#include "zip_archive.h"
namespace art {
static int original_argc;
static char** original_argv;
static std::string CommandLine() {
std::vector<std::string> command;
for (int i = 0; i < original_argc; ++i) {
command.push_back(original_argv[i]);
}
return Join(command, ' ');
}
static void UsageErrorV(const char* fmt, va_list ap) {
std::string error;
StringAppendV(&error, fmt, ap);
LOG(ERROR) << error;
}
static void UsageError(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
UsageErrorV(fmt, ap);
va_end(ap);
}
static void Usage(const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
UsageErrorV(fmt, ap);
va_end(ap);
UsageError("Command: %s", CommandLine().c_str());
UsageError("Usage: dex2oat [options]...");
UsageError("");
UsageError(" --dex-file=<dex-file>: specifies a .dex file to compile.");
UsageError(" Example: --dex-file=/system/framework/core.jar");
UsageError("");
UsageError(" --zip-fd=<file-descriptor>: specifies a file descriptor of a zip file");
UsageError(" containing a classes.dex file to compile.");
UsageError(" Example: --zip-fd=5");
UsageError("");
UsageError(" --zip-location=<zip-location>: specifies a symbolic name for the file");
UsageError(" corresponding to the file descriptor specified by --zip-fd.");
UsageError(" Example: --zip-location=/system/app/Calculator.apk");
UsageError("");
UsageError(" --oat-file=<file.oat>: specifies the oat output destination via a filename.");
UsageError(" Example: --oat-file=/system/framework/boot.oat");
UsageError("");
UsageError(" --oat-fd=<number>: specifies the oat output destination via a file descriptor.");
UsageError(" Example: --oat-fd=6");
UsageError("");
UsageError(" --oat-location=<oat-name>: specifies a symbolic name for the file corresponding");
UsageError(" to the file descriptor specified by --oat-fd.");
UsageError(" Example: --oat-location=/data/dalvik-cache/system@app@Calculator.apk.oat");
UsageError("");
UsageError(" --oat-symbols=<file.oat>: specifies the oat output destination with full symbols.");
UsageError(" Example: --oat-symbols=/symbols/system/framework/boot.oat");
UsageError("");
UsageError(" --bitcode=<file.bc>: specifies the optional bitcode filename.");
UsageError(" Example: --bitcode=/system/framework/boot.bc");
UsageError("");
UsageError(" --image=<file.art>: specifies the output image filename.");
UsageError(" Example: --image=/system/framework/boot.art");
UsageError("");
UsageError(" --image-classes=<classname-file>: specifies classes to include in an image.");
UsageError(" Example: --image=frameworks/base/preloaded-classes");
UsageError("");
UsageError(" --base=<hex-address>: specifies the base address when creating a boot image.");
UsageError(" Example: --base=0x50000000");
UsageError("");
UsageError(" --boot-image=<file.art>: provide the image file for the boot class path.");
UsageError(" Example: --boot-image=/system/framework/boot.art");
UsageError(" Default: $ANDROID_ROOT/system/framework/boot.art");
UsageError("");
UsageError(" --android-root=<path>: used to locate libraries for portable linking.");
UsageError(" Example: --android-root=out/host/linux-x86");
UsageError(" Default: $ANDROID_ROOT");
UsageError("");
UsageError(" --instruction-set=(arm|arm64|mips|x86|x86_64): compile for a particular instruction");
UsageError(" set.");
UsageError(" Example: --instruction-set=x86");
UsageError(" Default: arm");
UsageError("");
UsageError(" --instruction-set-features=...,: Specify instruction set features");
UsageError(" Example: --instruction-set-features=div");
UsageError(" Default: default");
UsageError("");
UsageError(" --compiler-backend=(Quick|Optimizing|Portable): select compiler backend");
UsageError(" set.");
UsageError(" Example: --compiler-backend=Portable");
UsageError(" Default: Quick");
UsageError("");
UsageError(" --compiler-filter=(verify-none|interpret-only|space|balanced|speed|everything):");
UsageError(" select compiler filter.");
UsageError(" Example: --compiler-filter=everything");
#if ART_SMALL_MODE
UsageError(" Default: interpret-only");
#else
UsageError(" Default: speed");
#endif
UsageError("");
UsageError(" --huge-method-max=<method-instruction-count>: the threshold size for a huge");
UsageError(" method for compiler filter tuning.");
UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold);
UsageError("");
UsageError(" --huge-method-max=<method-instruction-count>: threshold size for a huge");
UsageError(" method for compiler filter tuning.");
UsageError(" Example: --huge-method-max=%d", CompilerOptions::kDefaultHugeMethodThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultHugeMethodThreshold);
UsageError("");
UsageError(" --large-method-max=<method-instruction-count>: threshold size for a large");
UsageError(" method for compiler filter tuning.");
UsageError(" Example: --large-method-max=%d", CompilerOptions::kDefaultLargeMethodThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultLargeMethodThreshold);
UsageError("");
UsageError(" --small-method-max=<method-instruction-count>: threshold size for a small");
UsageError(" method for compiler filter tuning.");
UsageError(" Example: --small-method-max=%d", CompilerOptions::kDefaultSmallMethodThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultSmallMethodThreshold);
UsageError("");
UsageError(" --tiny-method-max=<method-instruction-count>: threshold size for a tiny");
UsageError(" method for compiler filter tuning.");
UsageError(" Example: --tiny-method-max=%d", CompilerOptions::kDefaultTinyMethodThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultTinyMethodThreshold);
UsageError("");
UsageError(" --num-dex-methods=<method-count>: threshold size for a small dex file for");
UsageError(" compiler filter tuning. If the input has fewer than this many methods");
UsageError(" and the filter is not interpret-only or verify-none, overrides the");
UsageError(" filter to use speed");
UsageError(" Example: --num-dex-method=%d", CompilerOptions::kDefaultNumDexMethodsThreshold);
UsageError(" Default: %d", CompilerOptions::kDefaultNumDexMethodsThreshold);
UsageError("");
UsageError(" --host: used with Portable backend to link against host runtime libraries");
UsageError("");
UsageError(" --dump-timing: display a breakdown of where time was spent");
UsageError("");
UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,");
UsageError(" such as initial heap size, maximum heap size, and verbose output.");
UsageError(" Use a separate --runtime-arg switch for each argument.");
UsageError(" Example: --runtime-arg -Xms256m");
UsageError("");
UsageError(" --profile-file=<filename>: specify profiler output file to use for compilation.");
UsageError("");
UsageError(" --print-pass-names: print a list of pass names");
UsageError("");
UsageError(" --disable-passes=<pass-names>: disable one or more passes separated by comma.");
UsageError(" Example: --disable-passes=UseCount,BBOptimizations");
UsageError("");
std::cerr << "See log for usage error information\n";
exit(EXIT_FAILURE);
}
class Dex2Oat {
public:
static bool Create(Dex2Oat** p_dex2oat,
const Runtime::Options& runtime_options,
const CompilerOptions& compiler_options,
Compiler::Kind compiler_kind,
InstructionSet instruction_set,
InstructionSetFeatures instruction_set_features,
VerificationResults* verification_results,
DexFileToMethodInlinerMap* method_inliner_map,
size_t thread_count)
SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) {
CHECK(verification_results != nullptr);
CHECK(method_inliner_map != nullptr);
std::unique_ptr<Dex2Oat> dex2oat(new Dex2Oat(&compiler_options,
compiler_kind,
instruction_set,
instruction_set_features,
verification_results,
method_inliner_map,
thread_count));
if (!dex2oat->CreateRuntime(runtime_options, instruction_set)) {
*p_dex2oat = nullptr;
return false;
}
*p_dex2oat = dex2oat.release();
return true;
}
~Dex2Oat() {
delete runtime_;
LogCompletionTime();
}
void LogCompletionTime() {
LOG(INFO) << "dex2oat took " << PrettyDuration(NanoTime() - start_ns_)
<< " (threads: " << thread_count_ << ")";
}
// Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;)
CompilerDriver::DescriptorSet* ReadImageClassesFromFile(const char* image_classes_filename) {
std::unique_ptr<std::ifstream> image_classes_file(new std::ifstream(image_classes_filename,
std::ifstream::in));
if (image_classes_file.get() == nullptr) {
LOG(ERROR) << "Failed to open image classes file " << image_classes_filename;
return nullptr;
}
std::unique_ptr<CompilerDriver::DescriptorSet> result(ReadImageClasses(*image_classes_file.get()));
image_classes_file->close();
return result.release();
}
CompilerDriver::DescriptorSet* ReadImageClasses(std::istream& image_classes_stream) {
std::unique_ptr<CompilerDriver::DescriptorSet> image_classes(new CompilerDriver::DescriptorSet);
while (image_classes_stream.good()) {
std::string dot;
std::getline(image_classes_stream, dot);
if (StartsWith(dot, "#") || dot.empty()) {
continue;
}
std::string descriptor(DotToDescriptor(dot.c_str()));
image_classes->insert(descriptor);
}
return image_classes.release();
}
// Reads the class names (java.lang.Object) and returns a set of descriptors (Ljava/lang/Object;)
CompilerDriver::DescriptorSet* ReadImageClassesFromZip(const char* zip_filename,
const char* image_classes_filename,
std::string* error_msg) {
std::unique_ptr<ZipArchive> zip_archive(ZipArchive::Open(zip_filename, error_msg));
if (zip_archive.get() == nullptr) {
return nullptr;
}
std::unique_ptr<ZipEntry> zip_entry(zip_archive->Find(image_classes_filename, error_msg));
if (zip_entry.get() == nullptr) {
*error_msg = StringPrintf("Failed to find '%s' within '%s': %s", image_classes_filename,
zip_filename, error_msg->c_str());
return nullptr;
}
std::unique_ptr<MemMap> image_classes_file(zip_entry->ExtractToMemMap(zip_filename,
image_classes_filename,
error_msg));
if (image_classes_file.get() == nullptr) {
*error_msg = StringPrintf("Failed to extract '%s' from '%s': %s", image_classes_filename,
zip_filename, error_msg->c_str());
return nullptr;
}
const std::string image_classes_string(reinterpret_cast<char*>(image_classes_file->Begin()),
image_classes_file->Size());
std::istringstream image_classes_stream(image_classes_string);
return ReadImageClasses(image_classes_stream);
}
const CompilerDriver* CreateOatFile(const std::string& boot_image_option,
const std::string& android_root,
bool is_host,
const std::vector<const DexFile*>& dex_files,
File* oat_file,
const std::string& bitcode_filename,
bool image,
std::unique_ptr<CompilerDriver::DescriptorSet>& image_classes,
bool dump_stats,
bool dump_passes,
TimingLogger& timings,
CumulativeLogger& compiler_phases_timings,
std::string profile_file) {
// Handle and ClassLoader creation needs to come after Runtime::Create
jobject class_loader = nullptr;
Thread* self = Thread::Current();
if (!boot_image_option.empty()) {
ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
std::vector<const DexFile*> class_path_files(dex_files);
OpenClassPathFiles(runtime_->GetClassPathString(), class_path_files);
ScopedObjectAccess soa(self);
for (size_t i = 0; i < class_path_files.size(); i++) {
class_linker->RegisterDexFile(*class_path_files[i]);
}
soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader);
ScopedLocalRef<jobject> class_loader_local(soa.Env(),
soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader));
class_loader = soa.Env()->NewGlobalRef(class_loader_local.get());
Runtime::Current()->SetCompileTimeClassPath(class_loader, class_path_files);
}
std::unique_ptr<CompilerDriver> driver(new CompilerDriver(compiler_options_,
verification_results_,
method_inliner_map_,
compiler_kind_,
instruction_set_,
instruction_set_features_,
image,
image_classes.release(),
thread_count_,
dump_stats,
dump_passes,
&compiler_phases_timings,
profile_file));
driver->GetCompiler()->SetBitcodeFileName(*driver.get(), bitcode_filename);
driver->CompileAll(class_loader, dex_files, &timings);
timings.NewSplit("dex2oat OatWriter");
std::string image_file_location;
uint32_t image_file_location_oat_checksum = 0;
uintptr_t image_file_location_oat_data_begin = 0;
if (!driver->IsImage()) {
TimingLogger::ScopedSplit split("Loading image checksum", &timings);
gc::space::ImageSpace* image_space = Runtime::Current()->GetHeap()->GetImageSpace();
image_file_location_oat_checksum = image_space->GetImageHeader().GetOatChecksum();
image_file_location_oat_data_begin =
reinterpret_cast<uintptr_t>(image_space->GetImageHeader().GetOatDataBegin());
image_file_location = image_space->GetImageFilename();
}
OatWriter oat_writer(dex_files,
image_file_location_oat_checksum,
image_file_location_oat_data_begin,
image_file_location,
driver.get(),
&timings);
TimingLogger::ScopedSplit split("Writing ELF", &timings);
if (!driver->WriteElf(android_root, is_host, dex_files, &oat_writer, oat_file)) {
LOG(ERROR) << "Failed to write ELF file " << oat_file->GetPath();
return nullptr;
}
return driver.release();
}
bool CreateImageFile(const std::string& image_filename,
uintptr_t image_base,
const std::string& oat_filename,
const std::string& oat_location,
const CompilerDriver& compiler)
LOCKS_EXCLUDED(Locks::mutator_lock_) {
uintptr_t oat_data_begin;
{
// ImageWriter is scoped so it can free memory before doing FixupElf
ImageWriter image_writer(compiler);
if (!image_writer.Write(image_filename, image_base, oat_filename, oat_location)) {
LOG(ERROR) << "Failed to create image file " << image_filename;
return false;
}
oat_data_begin = image_writer.GetOatDataBegin();
}
std::unique_ptr<File> oat_file(OS::OpenFileReadWrite(oat_filename.c_str()));
if (oat_file.get() == nullptr) {
PLOG(ERROR) << "Failed to open ELF file: " << oat_filename;
return false;
}
if (!ElfFixup::Fixup(oat_file.get(), oat_data_begin)) {
LOG(ERROR) << "Failed to fixup ELF file " << oat_file->GetPath();
return false;
}
return true;
}
private:
explicit Dex2Oat(const CompilerOptions* compiler_options,
Compiler::Kind compiler_kind,
InstructionSet instruction_set,
InstructionSetFeatures instruction_set_features,
VerificationResults* verification_results,
DexFileToMethodInlinerMap* method_inliner_map,
size_t thread_count)
: compiler_options_(compiler_options),
compiler_kind_(compiler_kind),
instruction_set_(instruction_set),
instruction_set_features_(instruction_set_features),
verification_results_(verification_results),
method_inliner_map_(method_inliner_map),
runtime_(nullptr),
thread_count_(thread_count),
start_ns_(NanoTime()) {
CHECK(compiler_options != nullptr);
CHECK(verification_results != nullptr);
CHECK(method_inliner_map != nullptr);
}
bool CreateRuntime(const Runtime::Options& runtime_options, InstructionSet instruction_set)
SHARED_TRYLOCK_FUNCTION(true, Locks::mutator_lock_) {
if (!Runtime::Create(runtime_options, false)) {
LOG(ERROR) << "Failed to create runtime";
return false;
}
Runtime* runtime = Runtime::Current();
runtime->SetInstructionSet(instruction_set);
for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i);
if (!runtime->HasCalleeSaveMethod(type)) {
runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(type), type);
}
}
runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod());
runtime_ = runtime;
return true;
}
// Appends to dex_files any elements of class_path that it doesn't already
// contain. This will open those dex files as necessary.
static void OpenClassPathFiles(const std::string& class_path,
std::vector<const DexFile*>& dex_files) {
std::vector<std::string> parsed;
Split(class_path, ':', parsed);
// Take Locks::mutator_lock_ so that lock ordering on the ClassLinker::dex_lock_ is maintained.
ScopedObjectAccess soa(Thread::Current());
for (size_t i = 0; i < parsed.size(); ++i) {
if (DexFilesContains(dex_files, parsed[i])) {
continue;
}
std::string error_msg;
const DexFile* dex_file = DexFile::Open(parsed[i].c_str(), parsed[i].c_str(), &error_msg);
if (dex_file == nullptr) {
LOG(WARNING) << "Failed to open dex file '" << parsed[i] << "': " << error_msg;
} else {
dex_files.push_back(dex_file);
}
}
}
// Returns true if dex_files has a dex with the named location.
static bool DexFilesContains(const std::vector<const DexFile*>& dex_files,
const std::string& location) {
for (size_t i = 0; i < dex_files.size(); ++i) {
if (dex_files[i]->GetLocation() == location) {
return true;
}
}
return false;
}
const CompilerOptions* const compiler_options_;
const Compiler::Kind compiler_kind_;
const InstructionSet instruction_set_;
const InstructionSetFeatures instruction_set_features_;
VerificationResults* const verification_results_;
DexFileToMethodInlinerMap* const method_inliner_map_;
Runtime* runtime_;
size_t thread_count_;
uint64_t start_ns_;
DISALLOW_IMPLICIT_CONSTRUCTORS(Dex2Oat);
};
static bool ParseInt(const char* in, int* out) {
char* end;
int result = strtol(in, &end, 10);
if (in == end || *end != '\0') {
return false;
}
*out = result;
return true;
}
static size_t OpenDexFiles(const std::vector<const char*>& dex_filenames,
const std::vector<const char*>& dex_locations,
std::vector<const DexFile*>& dex_files) {
size_t failure_count = 0;
for (size_t i = 0; i < dex_filenames.size(); i++) {
const char* dex_filename = dex_filenames[i];
const char* dex_location = dex_locations[i];
ATRACE_BEGIN(StringPrintf("Opening dex file '%s'", dex_filenames[i]).c_str());
std::string error_msg;
if (!OS::FileExists(dex_filename)) {
LOG(WARNING) << "Skipping non-existent dex file '" << dex_filename << "'";
continue;
}
const DexFile* dex_file = DexFile::Open(dex_filename, dex_location, &error_msg);
if (dex_file == nullptr) {
LOG(WARNING) << "Failed to open .dex from file '" << dex_filename << "': " << error_msg;
++failure_count;
} else {
dex_files.push_back(dex_file);
}
ATRACE_END();
}
return failure_count;
}
// The primary goal of the watchdog is to prevent stuck build servers
// during development when fatal aborts lead to a cascade of failures
// that result in a deadlock.
class WatchDog {
// WatchDog defines its own CHECK_PTHREAD_CALL to avoid using Log which uses locks
#undef CHECK_PTHREAD_CALL
#define CHECK_WATCH_DOG_PTHREAD_CALL(call, args, what) \
do { \
int rc = call args; \
if (rc != 0) { \
errno = rc; \
std::string message(# call); \
message += " failed for "; \
message += reason; \
Fatal(message); \
} \
} while (false)
public:
explicit WatchDog(bool is_watch_dog_enabled) {
is_watch_dog_enabled_ = is_watch_dog_enabled;
if (!is_watch_dog_enabled_) {
return;
}
shutting_down_ = false;
const char* reason = "dex2oat watch dog thread startup";
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_init, (&mutex_, nullptr), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_init, (&cond_, nullptr), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_init, (&attr_), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_create, (&pthread_, &attr_, &CallBack, this), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_attr_destroy, (&attr_), reason);
}
~WatchDog() {
if (!is_watch_dog_enabled_) {
return;
}
const char* reason = "dex2oat watch dog thread shutdown";
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason);
shutting_down_ = true;
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_signal, (&cond_), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_join, (pthread_, nullptr), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_cond_destroy, (&cond_), reason);
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_destroy, (&mutex_), reason);
}
private:
static void* CallBack(void* arg) {
WatchDog* self = reinterpret_cast<WatchDog*>(arg);
::art::SetThreadName("dex2oat watch dog");
self->Wait();
return nullptr;
}
static void Message(char severity, const std::string& message) {
// TODO: Remove when we switch to LOG when we can guarantee it won't prevent shutdown in error
// cases.
fprintf(stderr, "dex2oat%s %c %d %d %s\n",
kIsDebugBuild ? "d" : "",
severity,
getpid(),
GetTid(),
message.c_str());
}
static void Warn(const std::string& message) {
Message('W', message);
}
static void Fatal(const std::string& message) {
Message('F', message);
exit(1);
}
void Wait() {
bool warning = true;
CHECK_GT(kWatchDogTimeoutSeconds, kWatchDogWarningSeconds);
// TODO: tune the multiplier for GC verification, the following is just to make the timeout
// large.
int64_t multiplier = kVerifyObjectSupport > kVerifyObjectModeFast ? 100 : 1;
timespec warning_ts;
InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogWarningSeconds * 1000, 0, &warning_ts);
timespec timeout_ts;
InitTimeSpec(true, CLOCK_REALTIME, multiplier * kWatchDogTimeoutSeconds * 1000, 0, &timeout_ts);
const char* reason = "dex2oat watch dog thread waiting";
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_lock, (&mutex_), reason);
while (!shutting_down_) {
int rc = TEMP_FAILURE_RETRY(pthread_cond_timedwait(&cond_, &mutex_,
warning ? &warning_ts
: &timeout_ts));
if (rc == ETIMEDOUT) {
std::string message(StringPrintf("dex2oat did not finish after %d seconds",
warning ? kWatchDogWarningSeconds
: kWatchDogTimeoutSeconds));
if (warning) {
Warn(message.c_str());
warning = false;
} else {
Fatal(message.c_str());
}
} else if (rc != 0) {
std::string message(StringPrintf("pthread_cond_timedwait failed: %s",
strerror(errno)));
Fatal(message.c_str());
}
}
CHECK_WATCH_DOG_PTHREAD_CALL(pthread_mutex_unlock, (&mutex_), reason);
}
// When setting timeouts, keep in mind that the build server may not be as fast as your desktop.
#if ART_USE_PORTABLE_COMPILER
static const unsigned int kWatchDogWarningSeconds = 2 * 60; // 2 minutes.
static const unsigned int kWatchDogTimeoutSeconds = 30 * 60; // 25 minutes + buffer.
#else
static const unsigned int kWatchDogWarningSeconds = 1 * 60; // 1 minute.
static const unsigned int kWatchDogTimeoutSeconds = 6 * 60; // 5 minutes + buffer.
#endif
bool is_watch_dog_enabled_;
bool shutting_down_;
// TODO: Switch to Mutex when we can guarantee it won't prevent shutdown in error cases.
pthread_mutex_t mutex_;
pthread_cond_t cond_;
pthread_attr_t attr_;
pthread_t pthread_;
};
const unsigned int WatchDog::kWatchDogWarningSeconds;
const unsigned int WatchDog::kWatchDogTimeoutSeconds;
// Given a set of instruction features from the build, parse it. The
// input 'str' is a comma separated list of feature names. Parse it and
// return the InstructionSetFeatures object.
static InstructionSetFeatures ParseFeatureList(std::string str) {
InstructionSetFeatures result;
typedef std::vector<std::string> FeatureList;
FeatureList features;
Split(str, ',', features);
for (FeatureList::iterator i = features.begin(); i != features.end(); i++) {
std::string feature = Trim(*i);
if (feature == "default") {
// Nothing to do.
} else if (feature == "div") {
// Supports divide instruction.
result.SetHasDivideInstruction(true);
} else if (feature == "nodiv") {
// Turn off support for divide instruction.
result.SetHasDivideInstruction(false);
} else if (feature == "lpae") {
// Supports Large Physical Address Extension.
result.SetHasLpae(true);
} else if (feature == "nolpae") {
// Turn off support for Large Physical Address Extension.
result.SetHasLpae(false);
} else {
Usage("Unknown instruction set feature: '%s'", feature.c_str());
}
}
// others...
return result;
}
void ParseStringAfterChar(const std::string& s, char c, std::string* parsed_value) {
std::string::size_type colon = s.find(c);
if (colon == std::string::npos) {
Usage("Missing char %c in option %s\n", c, s.c_str());
}
// Add one to remove the char we were trimming until.
*parsed_value = s.substr(colon + 1);
}
void ParseDouble(const std::string& option, char after_char,
double min, double max, double* parsed_value) {
std::string substring;
ParseStringAfterChar(option, after_char, &substring);
bool sane_val = true;
double value;
if (false) {
// TODO: this doesn't seem to work on the emulator. b/15114595
std::stringstream iss(substring);
iss >> value;
// Ensure that we have a value, there was no cruft after it and it satisfies a sensible range.
sane_val = iss.eof() && (value >= min) && (value <= max);
} else {
char* end = nullptr;
value = strtod(substring.c_str(), &end);
sane_val = *end == '\0' && value >= min && value <= max;
}
if (!sane_val) {
Usage("Invalid double value %s for option %s\n", substring.c_str(), option.c_str());
}
*parsed_value = value;
}
static int dex2oat(int argc, char** argv) {
original_argc = argc;
original_argv = argv;
TimingLogger timings("compiler", false, false);
CumulativeLogger compiler_phases_timings("compilation times");
InitLogging(argv);
// Skip over argv[0].
argv++;
argc--;
if (argc == 0) {
Usage("No arguments specified");
}
std::vector<const char*> dex_filenames;
std::vector<const char*> dex_locations;
int zip_fd = -1;
std::string zip_location;
std::string oat_filename;
std::string oat_symbols;
std::string oat_location;
int oat_fd = -1;
std::string bitcode_filename;
const char* image_classes_zip_filename = nullptr;
const char* image_classes_filename = nullptr;
std::string image_filename;
std::string boot_image_filename;
uintptr_t image_base = 0;
std::string android_root;
std::vector<const char*> runtime_args;
int thread_count = sysconf(_SC_NPROCESSORS_CONF);
Compiler::Kind compiler_kind = kUsePortableCompiler
? Compiler::kPortable
: Compiler::kQuick;
const char* compiler_filter_string = nullptr;
int huge_method_threshold = CompilerOptions::kDefaultHugeMethodThreshold;
int large_method_threshold = CompilerOptions::kDefaultLargeMethodThreshold;
int small_method_threshold = CompilerOptions::kDefaultSmallMethodThreshold;
int tiny_method_threshold = CompilerOptions::kDefaultTinyMethodThreshold;
int num_dex_methods_threshold = CompilerOptions::kDefaultNumDexMethodsThreshold;
// Take the default set of instruction features from the build.
InstructionSetFeatures instruction_set_features =
ParseFeatureList(Runtime::GetDefaultInstructionSetFeatures());
InstructionSet instruction_set = kRuntimeISA;
// Profile file to use
std::string profile_file;
double top_k_profile_threshold = CompilerOptions::kDefaultTopKProfileThreshold;
bool is_host = false;
bool dump_stats = false;
bool dump_timing = false;
bool dump_passes = false;
bool dump_slow_timing = kIsDebugBuild;
bool watch_dog_enabled = !kIsTargetBuild;
bool generate_gdb_information = kIsDebugBuild;
for (int i = 0; i < argc; i++) {
const StringPiece option(argv[i]);
const bool log_options = false;
if (log_options) {
LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i];
}
if (option.starts_with("--dex-file=")) {
dex_filenames.push_back(option.substr(strlen("--dex-file=")).data());
} else if (option.starts_with("--dex-location=")) {
dex_locations.push_back(option.substr(strlen("--dex-location=")).data());
} else if (option.starts_with("--zip-fd=")) {
const char* zip_fd_str = option.substr(strlen("--zip-fd=")).data();
if (!ParseInt(zip_fd_str, &zip_fd)) {
Usage("Failed to parse --zip-fd argument '%s' as an integer", zip_fd_str);
}
if (zip_fd < 0) {
Usage("--zip-fd passed a negative value %d", zip_fd);
}
} else if (option.starts_with("--zip-location=")) {
zip_location = option.substr(strlen("--zip-location=")).data();
} else if (option.starts_with("--oat-file=")) {
oat_filename = option.substr(strlen("--oat-file=")).data();
} else if (option.starts_with("--oat-symbols=")) {
oat_symbols = option.substr(strlen("--oat-symbols=")).data();
} else if (option.starts_with("--oat-fd=")) {
const char* oat_fd_str = option.substr(strlen("--oat-fd=")).data();
if (!ParseInt(oat_fd_str, &oat_fd)) {
Usage("Failed to parse --oat-fd argument '%s' as an integer", oat_fd_str);
}
if (oat_fd < 0) {
Usage("--oat-fd passed a negative value %d", oat_fd);
}
} else if (option == "--watch-dog") {
watch_dog_enabled = true;
} else if (option == "--no-watch-dog") {
watch_dog_enabled = false;
} else if (option == "--gen-gdb-info") {
generate_gdb_information = true;
} else if (option == "--no-gen-gdb-info") {
generate_gdb_information = false;
} else if (option.starts_with("-j")) {
const char* thread_count_str = option.substr(strlen("-j")).data();
if (!ParseInt(thread_count_str, &thread_count)) {
Usage("Failed to parse -j argument '%s' as an integer", thread_count_str);
}
} else if (option.starts_with("--oat-location=")) {
oat_location = option.substr(strlen("--oat-location=")).data();
} else if (option.starts_with("--bitcode=")) {
bitcode_filename = option.substr(strlen("--bitcode=")).data();
} else if (option.starts_with("--image=")) {
image_filename = option.substr(strlen("--image=")).data();
} else if (option.starts_with("--image-classes=")) {
image_classes_filename = option.substr(strlen("--image-classes=")).data();
} else if (option.starts_with("--image-classes-zip=")) {
image_classes_zip_filename = option.substr(strlen("--image-classes-zip=")).data();
} else if (option.starts_with("--base=")) {
const char* image_base_str = option.substr(strlen("--base=")).data();
char* end;
image_base = strtoul(image_base_str, &end, 16);
if (end == image_base_str || *end != '\0') {
Usage("Failed to parse hexadecimal value for option %s", option.data());
}
} else if (option.starts_with("--boot-image=")) {
boot_image_filename = option.substr(strlen("--boot-image=")).data();
} else if (option.starts_with("--android-root=")) {
android_root = option.substr(strlen("--android-root=")).data();
} else if (option.starts_with("--instruction-set=")) {
StringPiece instruction_set_str = option.substr(strlen("--instruction-set=")).data();
if (instruction_set_str == "arm") {
instruction_set = kThumb2;
} else if (instruction_set_str == "arm64") {
instruction_set = kArm64;
} else if (instruction_set_str == "mips") {
instruction_set = kMips;
} else if (instruction_set_str == "x86") {
instruction_set = kX86;
} else if (instruction_set_str == "x86_64") {
instruction_set = kX86_64;
}
} else if (option.starts_with("--instruction-set-features=")) {
StringPiece str = option.substr(strlen("--instruction-set-features=")).data();
instruction_set_features = ParseFeatureList(str.as_string());
} else if (option.starts_with("--compiler-backend=")) {
StringPiece backend_str = option.substr(strlen("--compiler-backend=")).data();
if (backend_str == "Quick") {
compiler_kind = Compiler::kQuick;
} else if (backend_str == "Optimizing") {
compiler_kind = Compiler::kOptimizing;
} else if (backend_str == "Portable") {
compiler_kind = Compiler::kPortable;
}
} else if (option.starts_with("--compiler-filter=")) {
compiler_filter_string = option.substr(strlen("--compiler-filter=")).data();
} else if (option.starts_with("--huge-method-max=")) {
const char* threshold = option.substr(strlen("--huge-method-max=")).data();
if (!ParseInt(threshold, &huge_method_threshold)) {
Usage("Failed to parse --huge-method-max '%s' as an integer", threshold);
}
if (huge_method_threshold < 0) {
Usage("--huge-method-max passed a negative value %s", huge_method_threshold);
}
} else if (option.starts_with("--large-method-max=")) {
const char* threshold = option.substr(strlen("--large-method-max=")).data();
if (!ParseInt(threshold, &large_method_threshold)) {
Usage("Failed to parse --large-method-max '%s' as an integer", threshold);
}
if (large_method_threshold < 0) {
Usage("--large-method-max passed a negative value %s", large_method_threshold);
}
} else if (option.starts_with("--small-method-max=")) {
const char* threshold = option.substr(strlen("--small-method-max=")).data();
if (!ParseInt(threshold, &small_method_threshold)) {
Usage("Failed to parse --small-method-max '%s' as an integer", threshold);
}
if (small_method_threshold < 0) {
Usage("--small-method-max passed a negative value %s", small_method_threshold);
}
} else if (option.starts_with("--tiny-method-max=")) {
const char* threshold = option.substr(strlen("--tiny-method-max=")).data();
if (!ParseInt(threshold, &tiny_method_threshold)) {
Usage("Failed to parse --tiny-method-max '%s' as an integer", threshold);
}
if (tiny_method_threshold < 0) {
Usage("--tiny-method-max passed a negative value %s", tiny_method_threshold);
}
} else if (option.starts_with("--num-dex-methods=")) {
const char* threshold = option.substr(strlen("--num-dex-methods=")).data();
if (!ParseInt(threshold, &num_dex_methods_threshold)) {
Usage("Failed to parse --num-dex-methods '%s' as an integer", threshold);
}
if (num_dex_methods_threshold < 0) {
Usage("--num-dex-methods passed a negative value %s", num_dex_methods_threshold);
}
} else if (option == "--host") {
is_host = true;
} else if (option == "--runtime-arg") {
if (++i >= argc) {
Usage("Missing required argument for --runtime-arg");
}
if (log_options) {
LOG(INFO) << "dex2oat: option[" << i << "]=" << argv[i];
}
runtime_args.push_back(argv[i]);
} else if (option == "--dump-timing") {
dump_timing = true;
} else if (option == "--dump-passes") {
dump_passes = true;
} else if (option == "--dump-stats") {
dump_stats = true;
} else if (option.starts_with("--profile-file=")) {
profile_file = option.substr(strlen("--profile-file=")).data();
VLOG(compiler) << "dex2oat: profile file is " << profile_file;
} else if (option == "--no-profile-file") {
// No profile
} else if (option.starts_with("--top-k-profile-threshold=")) {
ParseDouble(option.data(), '=', 10.0, 90.0, &top_k_profile_threshold);
} else if (option == "--print-pass-names") {
PassDriverMEOpts::PrintPassNames();
} else if (option.starts_with("--disable-passes=")) {
std::string disable_passes = option.substr(strlen("--disable-passes=")).data();
PassDriverMEOpts::CreateDefaultPassList(disable_passes);
} else if (option.starts_with("--print-passes=")) {
std::string print_passes = option.substr(strlen("--print-passes=")).data();
PassDriverMEOpts::SetPrintPassList(print_passes);
} else if (option == "--print-all-passes") {
PassDriverMEOpts::SetPrintAllPasses();
} else if (option.starts_with("--dump-cfg-passes=")) {
std::string dump_passes = option.substr(strlen("--dump-cfg-passes=")).data();
PassDriverMEOpts::SetDumpPassList(dump_passes);
} else {
Usage("Unknown argument %s", option.data());
}
}
if (oat_filename.empty() && oat_fd == -1) {
Usage("Output must be supplied with either --oat-file or --oat-fd");
}
if (!oat_filename.empty() && oat_fd != -1) {
Usage("--oat-file should not be used with --oat-fd");
}
if (!oat_symbols.empty() && oat_fd != -1) {
Usage("--oat-symbols should not be used with --oat-fd");
}
if (!oat_symbols.empty() && is_host) {
Usage("--oat-symbols should not be used with --host");
}
if (oat_fd != -1 && !image_filename.empty()) {
Usage("--oat-fd should not be used with --image");
}
if (android_root.empty()) {
const char* android_root_env_var = getenv("ANDROID_ROOT");
if (android_root_env_var == nullptr) {
Usage("--android-root unspecified and ANDROID_ROOT not set");
}
android_root += android_root_env_var;
}
bool image = (!image_filename.empty());
if (!image && boot_image_filename.empty()) {
boot_image_filename += GetAndroidRoot();
boot_image_filename += "/framework/boot.art";
}
std::string boot_image_option;
if (!boot_image_filename.empty()) {
boot_image_option += "-Ximage:";
boot_image_option += boot_image_filename;
}
if (image_classes_filename != nullptr && !image) {
Usage("--image-classes should only be used with --image");
}
if (image_classes_filename != nullptr && !boot_image_option.empty()) {
Usage("--image-classes should not be used with --boot-image");
}
if (image_classes_zip_filename != nullptr && image_classes_filename == nullptr) {
Usage("--image-classes-zip should be used with --image-classes");
}
if (dex_filenames.empty() && zip_fd == -1) {
Usage("Input must be supplied with either --dex-file or --zip-fd");
}
if (!dex_filenames.empty() && zip_fd != -1) {
Usage("--dex-file should not be used with --zip-fd");
}
if (!dex_filenames.empty() && !zip_location.empty()) {
Usage("--dex-file should not be used with --zip-location");
}
if (dex_locations.empty()) {
for (size_t i = 0; i < dex_filenames.size(); i++) {
dex_locations.push_back(dex_filenames[i]);
}
} else if (dex_locations.size() != dex_filenames.size()) {
Usage("--dex-location arguments do not match --dex-file arguments");
}
if (zip_fd != -1 && zip_location.empty()) {
Usage("--zip-location should be supplied with --zip-fd");
}
if (boot_image_option.empty()) {
if (image_base == 0) {
Usage("Non-zero --base not specified");
}
}
std::string oat_stripped(oat_filename);
std::string oat_unstripped;
if (!oat_symbols.empty()) {
oat_unstripped += oat_symbols;
} else {
oat_unstripped += oat_filename;
}
if (compiler_filter_string == nullptr) {
if (instruction_set == kX86_64 || instruction_set == kArm64 || instruction_set == kMips) {
// TODO: implement/fix compilers for these architectures.
compiler_filter_string = "interpret-only";
} else if (image) {
compiler_filter_string = "speed";
} else {
#if ART_SMALL_MODE
compiler_filter_string = "interpret-only";
#else
compiler_filter_string = "speed";
#endif
}
}
CHECK(compiler_filter_string != nullptr);
CompilerOptions::CompilerFilter compiler_filter = CompilerOptions::kDefaultCompilerFilter;
if (strcmp(compiler_filter_string, "verify-none") == 0) {
compiler_filter = CompilerOptions::kVerifyNone;
} else if (strcmp(compiler_filter_string, "interpret-only") == 0) {
compiler_filter = CompilerOptions::kInterpretOnly;
} else if (strcmp(compiler_filter_string, "space") == 0) {
compiler_filter = CompilerOptions::kSpace;
} else if (strcmp(compiler_filter_string, "balanced") == 0) {
compiler_filter = CompilerOptions::kBalanced;
} else if (strcmp(compiler_filter_string, "speed") == 0) {
compiler_filter = CompilerOptions::kSpeed;
} else if (strcmp(compiler_filter_string, "everything") == 0) {
compiler_filter = CompilerOptions::kEverything;
} else {
Usage("Unknown --compiler-filter value %s", compiler_filter_string);
}
CompilerOptions compiler_options(compiler_filter,
huge_method_threshold,
large_method_threshold,
small_method_threshold,
tiny_method_threshold,
num_dex_methods_threshold,
generate_gdb_information,
top_k_profile_threshold
#ifdef ART_SEA_IR_MODE
, compiler_options.sea_ir_ = true;
#endif
); // NOLINT(whitespace/parens)
// Done with usage checks, enable watchdog if requested
WatchDog watch_dog(watch_dog_enabled);
// Check early that the result of compilation can be written
std::unique_ptr<File> oat_file;
bool create_file = !oat_unstripped.empty(); // as opposed to using open file descriptor
if (create_file) {
oat_file.reset(OS::CreateEmptyFile(oat_unstripped.c_str()));
if (oat_location.empty()) {
oat_location = oat_filename;
}
} else {
oat_file.reset(new File(oat_fd, oat_location));
oat_file->DisableAutoClose();
}
if (oat_file.get() == nullptr) {
PLOG(ERROR) << "Failed to create oat file: " << oat_location;
return EXIT_FAILURE;
}
if (create_file && fchmod(oat_file->Fd(), 0644) != 0) {
PLOG(ERROR) << "Failed to make oat file world readable: " << oat_location;
return EXIT_FAILURE;
}
timings.StartSplit("dex2oat Setup");
LOG(INFO) << CommandLine();
Runtime::Options runtime_options;
std::vector<const DexFile*> boot_class_path;
if (boot_image_option.empty()) {
size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, boot_class_path);
if (failure_count > 0) {
LOG(ERROR) << "Failed to open some dex files: " << failure_count;
return EXIT_FAILURE;
}
runtime_options.push_back(std::make_pair("bootclasspath", &boot_class_path));
} else {
runtime_options.push_back(std::make_pair(boot_image_option.c_str(), nullptr));
}
for (size_t i = 0; i < runtime_args.size(); i++) {
runtime_options.push_back(std::make_pair(runtime_args[i], nullptr));
}
VerificationResults verification_results(&compiler_options);
DexFileToMethodInlinerMap method_inliner_map;
CompilerCallbacksImpl callbacks(&verification_results, &method_inliner_map);
runtime_options.push_back(std::make_pair("compilercallbacks", &callbacks));
runtime_options.push_back(
std::make_pair("imageinstructionset",
reinterpret_cast<const void*>(GetInstructionSetString(instruction_set))));
Dex2Oat* p_dex2oat;
if (!Dex2Oat::Create(&p_dex2oat,
runtime_options,
compiler_options,
compiler_kind,
instruction_set,
instruction_set_features,
&verification_results,
&method_inliner_map,
thread_count)) {
LOG(ERROR) << "Failed to create dex2oat";
return EXIT_FAILURE;
}
std::unique_ptr<Dex2Oat> dex2oat(p_dex2oat);
// Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start,
// give it away now so that we don't starve GC.
Thread* self = Thread::Current();
self->TransitionFromRunnableToSuspended(kNative);
// If we're doing the image, override the compiler filter to force full compilation. Must be
// done ahead of WellKnownClasses::Init that causes verification. Note: doesn't force
// compilation of class initializers.
// Whilst we're in native take the opportunity to initialize well known classes.
WellKnownClasses::Init(self->GetJniEnv());
// If --image-classes was specified, calculate the full list of classes to include in the image
std::unique_ptr<CompilerDriver::DescriptorSet> image_classes(nullptr);
if (image_classes_filename != nullptr) {
std::string error_msg;
if (image_classes_zip_filename != nullptr) {
image_classes.reset(dex2oat->ReadImageClassesFromZip(image_classes_zip_filename,
image_classes_filename,
&error_msg));
} else {
image_classes.reset(dex2oat->ReadImageClassesFromFile(image_classes_filename));
}
if (image_classes.get() == nullptr) {
LOG(ERROR) << "Failed to create list of image classes from '" << image_classes_filename <<
"': " << error_msg;
return EXIT_FAILURE;
}
} else if (image) {
image_classes.reset(new CompilerDriver::DescriptorSet);
}
std::vector<const DexFile*> dex_files;
if (boot_image_option.empty()) {
dex_files = Runtime::Current()->GetClassLinker()->GetBootClassPath();
} else {
if (dex_filenames.empty()) {
ATRACE_BEGIN("Opening zip archive from file descriptor");
std::string error_msg;
std::unique_ptr<ZipArchive> zip_archive(ZipArchive::OpenFromFd(zip_fd, zip_location.c_str(),
&error_msg));
if (zip_archive.get() == nullptr) {
LOG(ERROR) << "Failed to open zip from file descriptor for '" << zip_location << "': "
<< error_msg;
return EXIT_FAILURE;
}
const DexFile* dex_file = DexFile::Open(*zip_archive.get(), zip_location, &error_msg);
if (dex_file == nullptr) {
LOG(ERROR) << "Failed to open dex from file descriptor for zip file '" << zip_location
<< "': " << error_msg;
return EXIT_FAILURE;
}
dex_files.push_back(dex_file);
ATRACE_END();
} else {
size_t failure_count = OpenDexFiles(dex_filenames, dex_locations, dex_files);
if (failure_count > 0) {
LOG(ERROR) << "Failed to open some dex files: " << failure_count;
return EXIT_FAILURE;
}
}
const bool kSaveDexInput = false;
if (kSaveDexInput) {
for (size_t i = 0; i < dex_files.size(); ++i) {
const DexFile* dex_file = dex_files[i];
std::string tmp_file_name(StringPrintf("/data/local/tmp/dex2oat.%d.%zd.dex", getpid(), i));
std::unique_ptr<File> tmp_file(OS::CreateEmptyFile(tmp_file_name.c_str()));
if (tmp_file.get() == nullptr) {
PLOG(ERROR) << "Failed to open file " << tmp_file_name
<< ". Try: adb shell chmod 777 /data/local/tmp";
continue;
}
tmp_file->WriteFully(dex_file->Begin(), dex_file->Size());
LOG(INFO) << "Wrote input to " << tmp_file_name;
}
}
}
// Ensure opened dex files are writable for dex-to-dex transformations.
for (const auto& dex_file : dex_files) {
if (!dex_file->EnableWrite()) {
PLOG(ERROR) << "Failed to make .dex file writeable '" << dex_file->GetLocation() << "'\n";
}
}
/*
* If we're not in interpret-only or verify-none mode, go ahead and compile small applications.
* Don't bother to check if we're doing the image.
*/
if (!image && compiler_options.IsCompilationEnabled()) {
size_t num_methods = 0;
for (size_t i = 0; i != dex_files.size(); ++i) {
const DexFile* dex_file = dex_files[i];
CHECK(dex_file != nullptr);
num_methods += dex_file->NumMethodIds();
}
if (num_methods <= compiler_options.GetNumDexMethodsThreshold()) {
compiler_options.SetCompilerFilter(CompilerOptions::kSpeed);
VLOG(compiler) << "Below method threshold, compiling anyways";
}
}
std::unique_ptr<const CompilerDriver> compiler(dex2oat->CreateOatFile(boot_image_option,
android_root,
is_host,
dex_files,
oat_file.get(),
bitcode_filename,
image,
image_classes,
dump_stats,
dump_passes,
timings,
compiler_phases_timings,
profile_file));
if (compiler.get() == nullptr) {
LOG(ERROR) << "Failed to create oat file: " << oat_location;
return EXIT_FAILURE;
}
VLOG(compiler) << "Oat file written successfully (unstripped): " << oat_location;
// Notes on the interleaving of creating the image and oat file to
// ensure the references between the two are correct.
//
// Currently we have a memory layout that looks something like this:
//
// +--------------+
// | image |
// +--------------+
// | boot oat |
// +--------------+
// | alloc spaces |
// +--------------+
//
// There are several constraints on the loading of the image and boot.oat.
//
// 1. The image is expected to be loaded at an absolute address and
// contains Objects with absolute pointers within the image.
//
// 2. There are absolute pointers from Methods in the image to their
// code in the oat.
//
// 3. There are absolute pointers from the code in the oat to Methods
// in the image.
//
// 4. There are absolute pointers from code in the oat to other code
// in the oat.
//
// To get this all correct, we go through several steps.
//
// 1. We have already created that oat file above with
// CreateOatFile. Originally this was just our own proprietary file
// but now it is contained within an ELF dynamic object (aka an .so
// file). The Compiler returned by CreateOatFile provides
// PatchInformation for references to oat code and Methods that need
// to be update once we know where the oat file will be located
// after the image.
//
// 2. We create the image file. It needs to know where the oat file
// will be loaded after itself. Originally when oat file was simply
// memory mapped so we could predict where its contents were based
// on the file size. Now that it is an ELF file, we need to inspect
// the ELF file to understand the in memory segment layout including
// where the oat header is located within. ImageWriter's
// PatchOatCodeAndMethods uses the PatchInformation from the
// Compiler to touch up absolute references in the oat file.
//
// 3. We fixup the ELF program headers so that dlopen will try to
// load the .so at the desired location at runtime by offsetting the
// Elf32_Phdr.p_vaddr values by the desired base address.
//
if (image) {
timings.NewSplit("dex2oat ImageWriter");
bool image_creation_success = dex2oat->CreateImageFile(image_filename,
image_base,
oat_unstripped,
oat_location,
*compiler.get());
if (!image_creation_success) {
return EXIT_FAILURE;
}
VLOG(compiler) << "Image written successfully: " << image_filename;
}
if (is_host) {
if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) {
LOG(INFO) << Dumpable<TimingLogger>(timings);
}
if (dump_passes) {
LOG(INFO) << Dumpable<CumulativeLogger>(*compiler.get()->GetTimingsLogger());
}
return EXIT_SUCCESS;
}
// If we don't want to strip in place, copy from unstripped location to stripped location.
// We need to strip after image creation because FixupElf needs to use .strtab.
if (oat_unstripped != oat_stripped) {
timings.NewSplit("dex2oat OatFile copy");
oat_file.reset();
std::unique_ptr<File> in(OS::OpenFileForReading(oat_unstripped.c_str()));
std::unique_ptr<File> out(OS::CreateEmptyFile(oat_stripped.c_str()));
size_t buffer_size = 8192;
std::unique_ptr<uint8_t> buffer(new uint8_t[buffer_size]);
while (true) {
int bytes_read = TEMP_FAILURE_RETRY(read(in->Fd(), buffer.get(), buffer_size));
if (bytes_read <= 0) {
break;
}
bool write_ok = out->WriteFully(buffer.get(), bytes_read);
CHECK(write_ok);
}
oat_file.reset(out.release());
VLOG(compiler) << "Oat file copied successfully (stripped): " << oat_stripped;
}
#if ART_USE_PORTABLE_COMPILER // We currently only generate symbols on Portable
timings.NewSplit("dex2oat ElfStripper");
// Strip unneeded sections for target
off_t seek_actual = lseek(oat_file->Fd(), 0, SEEK_SET);
CHECK_EQ(0, seek_actual);
std::string error_msg;
CHECK(ElfStripper::Strip(oat_file.get(), &error_msg)) << error_msg;
// We wrote the oat file successfully, and want to keep it.
VLOG(compiler) << "Oat file written successfully (stripped): " << oat_location;
#endif // ART_USE_PORTABLE_COMPILER
timings.EndSplit();
if (dump_timing || (dump_slow_timing && timings.GetTotalNs() > MsToNs(1000))) {
LOG(INFO) << Dumpable<TimingLogger>(timings);
}
if (dump_passes) {
LOG(INFO) << Dumpable<CumulativeLogger>(compiler_phases_timings);
}
// Everything was successfully written, do an explicit exit here to avoid running Runtime
// destructors that take time (bug 10645725) unless we're a debug build or running on valgrind.
if (!kIsDebugBuild && (RUNNING_ON_VALGRIND == 0)) {
dex2oat->LogCompletionTime();
exit(EXIT_SUCCESS);
}
return EXIT_SUCCESS;
} // NOLINT(readability/fn_size)
} // namespace art
int main(int argc, char** argv) {
return art::dex2oat(argc, argv);
}