src/oatdump.cc - LeafOS-Project/android_art - Gitiles

 // Copyright 2011 Google Inc. All Rights Reserved.

 #include <stdio.h>
 #include <stdlib.h>

 #include <fstream>
 #include <iostream>
 #include <string>
 #include <vector>

 #include "class_linker.h"
 #include "file.h"
 #include "image.h"
 #include "os.h"
 #include "runtime.h"
 #include "space.h"
 #include "stringpiece.h"
 #include "unordered_map.h"

 namespace art {

 static void usage() {
   fprintf(stderr,
           "Usage: oatdump [options] ...\n"
           "    Example: oatdump --image=$ANDROID_PRODUCT_OUT/system/framework/boot.art --host-prefix=$ANDROID_PRODUCT_OUT\n"
           "    Example: adb shell oatdump --image=/system/framework/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --image=<file.art>: specifies the required input image filename.\n"
           "      Example: --image=/system/framework/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --boot-image=<file.art>: provide the image file for the boot class path.\n"
           "      Example: --boot-image=/system/framework/boot.art\n"
           "\n");
   fprintf(stderr,
           "  --host-prefix may be used to translate host paths to target paths during\n"
           "      cross compilation.\n"
           "      Example: --host-prefix=out/target/product/crespo\n"
           "\n");
   fprintf(stderr,
           "  --output=<file> may be used to send the output to a file.\n"
           "      Example: --output=/tmp/oatdump.txt\n"
           "\n");
   exit(EXIT_FAILURE);
 }

 const char* image_roots_descriptions_[] = {
   "kJniStubArray",
   "kAbstractMethodErrorStubArray",
   "kCalleeSaveMethod",
   "kOatLocation",
   "kDexCaches",
 };

 class OatDump {

  public:
   static void Dump(const std::string& image_filename,
                    std::ostream& os,
                    Space& image_space,
                    const ImageHeader& image_header) {
     os << "MAGIC:\n";
     os << image_header.GetMagic() << "\n\n";

     os << "IMAGE BASE:\n";
     os << reinterpret_cast<void*>(image_header.GetImageBaseAddr()) << "\n\n";

     os << "OAT BASE:\n";
     os << reinterpret_cast<void*>(image_header.GetOatBaseAddr()) << "\n\n";

     os << "ROOTS:\n";
     CHECK_EQ(arraysize(image_roots_descriptions_), size_t(ImageHeader::kImageRootsMax));
     for (int i = 0; i < ImageHeader::kImageRootsMax; i++) {
       ImageHeader::ImageRoot image_root = static_cast<ImageHeader::ImageRoot>(i);
       os << StringPrintf("%s: %p\n",
                          image_roots_descriptions_[i], image_header.GetImageRoot(image_root));
     }
     os << "\n";

     os << "OBJECTS:\n" << std::flush;
     OatDump state(image_space, os);
     HeapBitmap* heap_bitmap = Heap::GetLiveBits();
     DCHECK(heap_bitmap != NULL);
     heap_bitmap->Walk(OatDump::Callback, &state);
     os << "\n";

     os << "STATS:\n" << std::flush;
     UniquePtr<File> file(OS::OpenFile(image_filename.c_str(), false));
     state.stats_.file_bytes = file->Length();
     size_t header_bytes = sizeof(ImageHeader);
     state.stats_.header_bytes = header_bytes;
     size_t alignment_bytes = RoundUp(header_bytes, kObjectAlignment) - header_bytes;
     state.stats_.alignment_bytes += alignment_bytes;
     state.stats_.Dump(os);

     os << std::flush;
   }

  private:

   OatDump(const Space& dump_space, std::ostream& os) : dump_space_(dump_space), os_(os) {
   }

   ~OatDump() {
   }

   static void Callback(Object* obj, void* arg) {
     DCHECK(obj != NULL);
     DCHECK(arg != NULL);
     OatDump* state = reinterpret_cast<OatDump*>(arg);
     if (!state->InDumpSpace(obj)) {
       return;
     }

     size_t object_bytes = obj->SizeOf();
     size_t alignment_bytes = RoundUp(object_bytes, kObjectAlignment) - object_bytes;
     state->stats_.object_bytes += object_bytes;
     state->stats_.alignment_bytes += alignment_bytes;

     std::string summary;
     StringAppendF(&summary, "%p: ", obj);
     if (obj->IsClass()) {
       Class* klass = obj->AsClass();
       StringAppendF(&summary, "CLASS %s", klass->GetDescriptor()->ToModifiedUtf8().c_str());
       std::stringstream ss;
       ss << " (" << klass->GetStatus() << ")";
       summary += ss.str();
     } else if (obj->IsMethod()) {
       Method* method = obj->AsMethod();
       StringAppendF(&summary, "METHOD %s", PrettyMethod(method).c_str());
     } else if (obj->IsField()) {
       Field* field = obj->AsField();
       Class* type = field->GetType();
       std::string type_string;
       type_string += (type == NULL) ? "<UNKNOWN>" : type->GetDescriptor()->ToModifiedUtf8();
       StringAppendF(&summary, "FIELD %s", PrettyField(field).c_str());
     } else if (obj->IsArrayInstance()) {
       StringAppendF(&summary, "ARRAY %d", obj->AsArray()->GetLength());
     } else if (obj->IsString()) {
       StringAppendF(&summary, "STRING %s", obj->AsString()->ToModifiedUtf8().c_str());
     } else {
       StringAppendF(&summary, "OBJECT");
     }
     StringAppendF(&summary, "\n");
     std::string descriptor = obj->GetClass()->GetDescriptor()->ToModifiedUtf8();
     StringAppendF(&summary, "\tclass %p: %s\n", obj->GetClass(), descriptor.c_str());
     state->stats_.descriptor_to_bytes[descriptor] += object_bytes;
     state->stats_.descriptor_to_count[descriptor] += 1;
     // StringAppendF(&summary, "\tsize %d (alignment padding %d)\n",
     //               object_bytes, RoundUp(object_bytes, kObjectAlignment) - object_bytes);
     if (obj->IsMethod()) {
       Method* method = obj->AsMethod();
       if (!method->IsPhony()) {
         const ByteArray* code = method->GetCodeArray();
         const int8_t* code_base = NULL;
         const int8_t* code_limit = NULL;
         if (code != NULL) {
           size_t code_bytes = code->GetLength();
           code_base = code->GetData();
           code_limit = code_base + code_bytes;
           if (method->IsNative()) {
             state->stats_.managed_to_native_code_bytes += code_bytes;
           } else {
             state->stats_.managed_code_bytes += code_bytes;
           }
         } else {
           code_base = reinterpret_cast<const int8_t*>(method->GetCode());
         }
         StringAppendF(&summary, "\tCODE     %p-%p\n", code_base, code_limit);

         const ByteArray* invoke = method->GetInvokeStubArray();
         const int8_t* invoke_base = NULL;
         const int8_t* invoke_limit = NULL;
         if (invoke != NULL) {
           size_t native_to_managed_code_bytes = invoke->GetLength();
           invoke_base = invoke->GetData();
           invoke_limit = invoke_base + native_to_managed_code_bytes;
           state->stats_.native_to_managed_code_bytes += native_to_managed_code_bytes;
           StringAppendF(&summary, "\tJNI STUB %p-%p\n", invoke_base, invoke_limit);
         }
       }
       if (method->IsNative()) {
         if (method->IsRegistered()) {
           StringAppendF(&summary, "\tNATIVE REGISTERED %p\n", method->GetNativeMethod());
         } else {
           StringAppendF(&summary, "\tNATIVE UNREGISTERED\n");
         }
         DCHECK(method->GetRegisterMapHeader() == NULL);
         DCHECK(method->GetRegisterMapData() == NULL);
         DCHECK(method->GetMappingTable() == NULL);
       } else if (method->IsAbstract()) {
         StringAppendF(&summary, "\tABSTRACT\n");
         DCHECK(method->GetRegisterMapHeader() == NULL);
         DCHECK(method->GetRegisterMapData() == NULL);
         DCHECK(method->GetMappingTable() == NULL);
       } else if (method->IsPhony()) {
         StringAppendF(&summary, "\tPHONY\n");
         DCHECK(method->GetRegisterMapHeader() == NULL);
         DCHECK(method->GetRegisterMapData() == NULL);
         DCHECK(method->GetMappingTable() == NULL);
       } else {
         size_t register_map_bytes = (method->GetRegisterMapHeader()->GetLength() +
                                      method->GetRegisterMapData()->GetLength());
         state->stats_.register_map_bytes += register_map_bytes;

         if (method->GetMappingTable() != NULL) {
           size_t pc_mapping_table_bytes = method->GetMappingTable()->GetLength();
           state->stats_.pc_mapping_table_bytes += pc_mapping_table_bytes;
         }

         ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
         class DexCache* dex_cache = method->GetDeclaringClass()->GetDexCache();
         const DexFile& dex_file = class_linker->FindDexFile(dex_cache);
         const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset());
         size_t dex_instruction_bytes = code_item->insns_size_ * 2;
         state->stats_.dex_instruction_bytes += dex_instruction_bytes;
       }
     }
     state->os_ << summary << std::flush;
   }

   bool InDumpSpace(const Object* object) {
     const byte* o = reinterpret_cast<const byte*>(object);
     return (o >= dump_space_.GetBase() && o < dump_space_.GetLimit());
   }

  public:
   struct Stats {
     size_t file_bytes;

     size_t header_bytes;
     size_t object_bytes;
     size_t alignment_bytes;

     size_t managed_code_bytes;
     size_t managed_to_native_code_bytes;
     size_t native_to_managed_code_bytes;

     size_t register_map_bytes;
     size_t pc_mapping_table_bytes;

     size_t dex_instruction_bytes;

     Stats()
         : file_bytes(0),
           header_bytes(0),
           object_bytes(0),
           alignment_bytes(0),
           managed_code_bytes(0),
           managed_to_native_code_bytes(0),
           native_to_managed_code_bytes(0),
           register_map_bytes(0),
           pc_mapping_table_bytes(0),
           dex_instruction_bytes(0) {}

     typedef std::tr1::unordered_map<std::string,size_t> TableBytes;
     TableBytes descriptor_to_bytes;

     typedef std::tr1::unordered_map<std::string,size_t> TableCount;
     TableCount descriptor_to_count;

     double PercentOfFileBytes(size_t size) {
       return (static_cast<double>(size) / static_cast<double>(file_bytes)) * 100;
     }

     double PercentOfObjectBytes(size_t size) {
       return (static_cast<double>(size) / static_cast<double>(object_bytes)) * 100;
     }

     void Dump(std::ostream& os) {
       os << StringPrintf("\tfile_bytes = %d\n", file_bytes);
       os << "\n";

       os << "\tfile_bytes = header_bytes + object_bytes + alignment_bytes\n";
       os << StringPrintf("\theader_bytes    = %10d (%2.0f%% of file_bytes)\n",
                          header_bytes, PercentOfFileBytes(header_bytes));
       os << StringPrintf("\tobject_bytes    = %10d (%2.0f%% of file_bytes)\n",
                          object_bytes, PercentOfFileBytes(object_bytes));
       os << StringPrintf("\talignment_bytes = %10d (%2.0f%% of file_bytes)\n",
                          alignment_bytes, PercentOfFileBytes(alignment_bytes));
       os << "\n";
       os << std::flush;
       CHECK_EQ(file_bytes, header_bytes + object_bytes + alignment_bytes);

       os << "\tobject_bytes = sum of descriptor_to_bytes values below:\n";
       size_t object_bytes_total = 0;
       typedef TableBytes::const_iterator It;  // TODO: C++0x auto
       for (It it = descriptor_to_bytes.begin(), end = descriptor_to_bytes.end(); it != end; ++it) {
         const std::string& descriptor = it->first;
         size_t bytes = it->second;
         size_t count = descriptor_to_count[descriptor];
         double average = static_cast<double>(bytes) / static_cast<double>(count);
         double percent = PercentOfObjectBytes(bytes);
         os << StringPrintf("\t%32s %8d bytes %6d instances "
                            "(%3.0f bytes/instance) %2.0f%% of object_bytes\n",
                            descriptor.c_str(), bytes, count,
                            average, percent);

         object_bytes_total += bytes;
       }
       os << "\n";
       os << std::flush;
       CHECK_EQ(object_bytes, object_bytes_total);

       os << StringPrintf("\tmanaged_code_bytes           = %8d (%2.0f%% of object_bytes)\n",
                          managed_code_bytes, PercentOfObjectBytes(managed_code_bytes));
       os << StringPrintf("\tmanaged_to_native_code_bytes = %8d (%2.0f%% of object_bytes)\n",
                          managed_to_native_code_bytes,
                          PercentOfObjectBytes(managed_to_native_code_bytes));
       os << StringPrintf("\tnative_to_managed_code_bytes = %8d (%2.0f%% of object_bytes)\n",
                          native_to_managed_code_bytes,
                          PercentOfObjectBytes(native_to_managed_code_bytes));
       os << "\n";
       os << std::flush;

       os << StringPrintf("\tregister_map_bytes     = %7d (%2.0f%% of object_bytes)\n",
                          register_map_bytes, PercentOfObjectBytes(register_map_bytes));
       os << StringPrintf("\tpc_mapping_table_bytes = %7d (%2.0f%% of object_bytes)\n",
                          pc_mapping_table_bytes, PercentOfObjectBytes(pc_mapping_table_bytes));
       os << "\n";
       os << std::flush;

       os << StringPrintf("\tdex_instruction_bytes = %d\n", dex_instruction_bytes);
       os << StringPrintf("\tmanaged_code_bytes expansion = %.2f\n",
                          static_cast<double>(managed_code_bytes)
                          / static_cast<double>(dex_instruction_bytes));
       os << "\n";
       os << std::flush;

     }
   } stats_;

  private:
   const Space& dump_space_;
   std::ostream& os_;

   DISALLOW_COPY_AND_ASSIGN(OatDump);
 };

 int oatdump(int argc, char** argv) {
   // Skip over argv[0].
   argv++;
   argc--;

   if (argc == 0) {
     fprintf(stderr, "no arguments specified\n");
     usage();
   }

   const char* image_filename = NULL;
   const char* boot_image_filename = NULL;
   std::string host_prefix;
   std::ostream* os = &std::cout;
   UniquePtr<std::ofstream> out;

   for (int i = 0; i < argc; i++) {
     const StringPiece option(argv[i]);
     if (option.starts_with("--image=")) {
       image_filename = option.substr(strlen("--image=")).data();
     } else if (option.starts_with("--boot-image=")) {
       boot_image_filename = option.substr(strlen("--boot-image=")).data();
     } else if (option.starts_with("--host-prefix=")) {
       host_prefix = option.substr(strlen("--host-prefix=")).data();
     } else if (option.starts_with("--output=")) {
       const char* filename = option.substr(strlen("--output=")).data();
       out.reset(new std::ofstream(filename));
       if (!out->good()) {
         fprintf(stderr, "failed to open output filename %s\n", filename);
         usage();
       }
       os = out.get();
     } else {
       fprintf(stderr, "unknown argument %s\n", option.data());
       usage();
     }
   }

   if (image_filename == NULL) {
    fprintf(stderr, "--image file name not specified\n");
    return EXIT_FAILURE;
   }

   Runtime::Options options;
   std::string image_option;
   std::string oat_option;
   std::string boot_image_option;
   std::string boot_oat_option;
   if (boot_image_filename != NULL) {
     boot_image_option += "-Ximage:";
     boot_image_option += boot_image_filename;
     options.push_back(std::make_pair(boot_image_option.c_str(), reinterpret_cast<void*>(NULL)));
   }
   image_option += "-Ximage:";
   image_option += image_filename;
   options.push_back(std::make_pair(image_option.c_str(), reinterpret_cast<void*>(NULL)));

   if (!host_prefix.empty()) {
     options.push_back(std::make_pair("host-prefix", host_prefix.c_str()));
   }

   UniquePtr<Runtime> runtime(Runtime::Create(options, false));
   if (runtime.get() == NULL) {
     fprintf(stderr, "could not create runtime\n");
     return EXIT_FAILURE;
   }

   Space* image_space = Heap::GetSpaces()[Heap::GetSpaces().size()-2];
   CHECK(image_space != NULL);
   const ImageHeader& image_header = image_space->GetImageHeader();
   if (!image_header.IsValid()) {
     fprintf(stderr, "invalid image header %s\n", image_filename);
     return EXIT_FAILURE;
   }
   OatDump::Dump(image_filename, *os, *image_space, image_header);
   return EXIT_SUCCESS;
 }

 } // namespace art

 int main(int argc, char** argv) {
   return art::oatdump(argc, argv);
 }
	// Copyright 2011 Google Inc. All Rights Reserved.

	#include <stdio.h>
	#include <stdlib.h>

	#include <fstream>
	#include <iostream>
	#include <string>
	#include <vector>

	#include "class_linker.h"
	#include "file.h"
	#include "image.h"
	#include "os.h"
	#include "runtime.h"
	#include "space.h"
	#include "stringpiece.h"
	#include "unordered_map.h"

	namespace art {

	static void usage() {
	fprintf(stderr,
	"Usage: oatdump [options] ...\n"
	" Example: oatdump --image=$ANDROID_PRODUCT_OUT/system/framework/boot.art --host-prefix=$ANDROID_PRODUCT_OUT\n"
	" Example: adb shell oatdump --image=/system/framework/boot.art\n"
	"\n");
	fprintf(stderr,
	" --image=<file.art>: specifies the required input image filename.\n"
	" Example: --image=/system/framework/boot.art\n"
	"\n");
	fprintf(stderr,
	" --boot-image=<file.art>: provide the image file for the boot class path.\n"
	" Example: --boot-image=/system/framework/boot.art\n"
	"\n");
	fprintf(stderr,
	" --host-prefix may be used to translate host paths to target paths during\n"
	" cross compilation.\n"
	" Example: --host-prefix=out/target/product/crespo\n"
	"\n");
	fprintf(stderr,
	" --output=<file> may be used to send the output to a file.\n"
	" Example: --output=/tmp/oatdump.txt\n"
	"\n");
	exit(EXIT_FAILURE);
	}

	const char* image_roots_descriptions_[] = {
	"kJniStubArray",
	"kAbstractMethodErrorStubArray",
	"kCalleeSaveMethod",
	"kOatLocation",
	"kDexCaches",
	};

	class OatDump {

	public:
	static void Dump(const std::string& image_filename,
	std::ostream& os,
	Space& image_space,
	const ImageHeader& image_header) {
	os << "MAGIC:\n";
	os << image_header.GetMagic() << "\n\n";

	os << "IMAGE BASE:\n";
	os << reinterpret_cast<void*>(image_header.GetImageBaseAddr()) << "\n\n";

	os << "OAT BASE:\n";
	os << reinterpret_cast<void*>(image_header.GetOatBaseAddr()) << "\n\n";

	os << "ROOTS:\n";
	CHECK_EQ(arraysize(image_roots_descriptions_), size_t(ImageHeader::kImageRootsMax));
	for (int i = 0; i < ImageHeader::kImageRootsMax; i++) {
	ImageHeader::ImageRoot image_root = static_cast<ImageHeader::ImageRoot>(i);
	os << StringPrintf("%s: %p\n",
	image_roots_descriptions_[i], image_header.GetImageRoot(image_root));
	}
	os << "\n";

	os << "OBJECTS:\n" << std::flush;
	OatDump state(image_space, os);
	HeapBitmap* heap_bitmap = Heap::GetLiveBits();
	DCHECK(heap_bitmap != NULL);
	heap_bitmap->Walk(OatDump::Callback, &state);
	os << "\n";

	os << "STATS:\n" << std::flush;
	UniquePtr<File> file(OS::OpenFile(image_filename.c_str(), false));
	state.stats_.file_bytes = file->Length();
	size_t header_bytes = sizeof(ImageHeader);
	state.stats_.header_bytes = header_bytes;
	size_t alignment_bytes = RoundUp(header_bytes, kObjectAlignment) - header_bytes;
	state.stats_.alignment_bytes += alignment_bytes;
	state.stats_.Dump(os);

	os << std::flush;
	}

	private:

	OatDump(const Space& dump_space, std::ostream& os) : dump_space_(dump_space), os_(os) {
	}

	~OatDump() {
	}

	static void Callback(Object* obj, void* arg) {
	DCHECK(obj != NULL);
	DCHECK(arg != NULL);
	OatDump* state = reinterpret_cast<OatDump*>(arg);
	if (!state->InDumpSpace(obj)) {
	return;
	}

	size_t object_bytes = obj->SizeOf();
	size_t alignment_bytes = RoundUp(object_bytes, kObjectAlignment) - object_bytes;
	state->stats_.object_bytes += object_bytes;
	state->stats_.alignment_bytes += alignment_bytes;

	std::string summary;
	StringAppendF(&summary, "%p: ", obj);
	if (obj->IsClass()) {
	Class* klass = obj->AsClass();
	StringAppendF(&summary, "CLASS %s", klass->GetDescriptor()->ToModifiedUtf8().c_str());
	std::stringstream ss;
	ss << " (" << klass->GetStatus() << ")";
	summary += ss.str();
	} else if (obj->IsMethod()) {
	Method* method = obj->AsMethod();
	StringAppendF(&summary, "METHOD %s", PrettyMethod(method).c_str());
	} else if (obj->IsField()) {
	Field* field = obj->AsField();
	Class* type = field->GetType();
	std::string type_string;
	type_string += (type == NULL) ? "<UNKNOWN>" : type->GetDescriptor()->ToModifiedUtf8();
	StringAppendF(&summary, "FIELD %s", PrettyField(field).c_str());
	} else if (obj->IsArrayInstance()) {
	StringAppendF(&summary, "ARRAY %d", obj->AsArray()->GetLength());
	} else if (obj->IsString()) {
	StringAppendF(&summary, "STRING %s", obj->AsString()->ToModifiedUtf8().c_str());
	} else {
	StringAppendF(&summary, "OBJECT");
	}
	StringAppendF(&summary, "\n");
	std::string descriptor = obj->GetClass()->GetDescriptor()->ToModifiedUtf8();
	StringAppendF(&summary, "\tclass %p: %s\n", obj->GetClass(), descriptor.c_str());
	state->stats_.descriptor_to_bytes[descriptor] += object_bytes;
	state->stats_.descriptor_to_count[descriptor] += 1;
	// StringAppendF(&summary, "\tsize %d (alignment padding %d)\n",
	// object_bytes, RoundUp(object_bytes, kObjectAlignment) - object_bytes);
	if (obj->IsMethod()) {
	Method* method = obj->AsMethod();
	if (!method->IsPhony()) {
	const ByteArray* code = method->GetCodeArray();
	const int8_t* code_base = NULL;
	const int8_t* code_limit = NULL;
	if (code != NULL) {
	size_t code_bytes = code->GetLength();
	code_base = code->GetData();
	code_limit = code_base + code_bytes;
	if (method->IsNative()) {
	state->stats_.managed_to_native_code_bytes += code_bytes;
	} else {
	state->stats_.managed_code_bytes += code_bytes;
	}
	} else {
	code_base = reinterpret_cast<const int8_t*>(method->GetCode());
	}
	StringAppendF(&summary, "\tCODE %p-%p\n", code_base, code_limit);

	const ByteArray* invoke = method->GetInvokeStubArray();
	const int8_t* invoke_base = NULL;
	const int8_t* invoke_limit = NULL;
	if (invoke != NULL) {
	size_t native_to_managed_code_bytes = invoke->GetLength();
	invoke_base = invoke->GetData();
	invoke_limit = invoke_base + native_to_managed_code_bytes;
	state->stats_.native_to_managed_code_bytes += native_to_managed_code_bytes;
	StringAppendF(&summary, "\tJNI STUB %p-%p\n", invoke_base, invoke_limit);
	}
	}
	if (method->IsNative()) {
	if (method->IsRegistered()) {
	StringAppendF(&summary, "\tNATIVE REGISTERED %p\n", method->GetNativeMethod());
	} else {
	StringAppendF(&summary, "\tNATIVE UNREGISTERED\n");
	}
	DCHECK(method->GetRegisterMapHeader() == NULL);
	DCHECK(method->GetRegisterMapData() == NULL);
	DCHECK(method->GetMappingTable() == NULL);
	} else if (method->IsAbstract()) {
	StringAppendF(&summary, "\tABSTRACT\n");
	DCHECK(method->GetRegisterMapHeader() == NULL);
	DCHECK(method->GetRegisterMapData() == NULL);
	DCHECK(method->GetMappingTable() == NULL);
	} else if (method->IsPhony()) {
	StringAppendF(&summary, "\tPHONY\n");
	DCHECK(method->GetRegisterMapHeader() == NULL);
	DCHECK(method->GetRegisterMapData() == NULL);
	DCHECK(method->GetMappingTable() == NULL);
	} else {
	size_t register_map_bytes = (method->GetRegisterMapHeader()->GetLength() +
	method->GetRegisterMapData()->GetLength());
	state->stats_.register_map_bytes += register_map_bytes;

	if (method->GetMappingTable() != NULL) {
	size_t pc_mapping_table_bytes = method->GetMappingTable()->GetLength();
	state->stats_.pc_mapping_table_bytes += pc_mapping_table_bytes;
	}

	ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
	class DexCache* dex_cache = method->GetDeclaringClass()->GetDexCache();
	const DexFile& dex_file = class_linker->FindDexFile(dex_cache);
	const DexFile::CodeItem* code_item = dex_file.GetCodeItem(method->GetCodeItemOffset());
	size_t dex_instruction_bytes = code_item->insns_size_ * 2;
	state->stats_.dex_instruction_bytes += dex_instruction_bytes;
	}
	}
	state->os_ << summary << std::flush;
	}

	bool InDumpSpace(const Object* object) {
	const byte* o = reinterpret_cast<const byte*>(object);
	return (o >= dump_space_.GetBase() && o < dump_space_.GetLimit());
	}

	public:
	struct Stats {
	size_t file_bytes;

	size_t header_bytes;
	size_t object_bytes;
	size_t alignment_bytes;

	size_t managed_code_bytes;
	size_t managed_to_native_code_bytes;
	size_t native_to_managed_code_bytes;

	size_t register_map_bytes;
	size_t pc_mapping_table_bytes;

	size_t dex_instruction_bytes;

	Stats()
	: file_bytes(0),
	header_bytes(0),
	object_bytes(0),
	alignment_bytes(0),
	managed_code_bytes(0),
	managed_to_native_code_bytes(0),
	native_to_managed_code_bytes(0),
	register_map_bytes(0),
	pc_mapping_table_bytes(0),
	dex_instruction_bytes(0) {}

	typedef std::tr1::unordered_map<std::string,size_t> TableBytes;
	TableBytes descriptor_to_bytes;

	typedef std::tr1::unordered_map<std::string,size_t> TableCount;
	TableCount descriptor_to_count;

	double PercentOfFileBytes(size_t size) {
	return (static_cast<double>(size) / static_cast<double>(file_bytes)) * 100;
	}

	double PercentOfObjectBytes(size_t size) {
	return (static_cast<double>(size) / static_cast<double>(object_bytes)) * 100;
	}

	void Dump(std::ostream& os) {
	os << StringPrintf("\tfile_bytes = %d\n", file_bytes);
	os << "\n";

	os << "\tfile_bytes = header_bytes + object_bytes + alignment_bytes\n";
	os << StringPrintf("\theader_bytes = %10d (%2.0f%% of file_bytes)\n",
	header_bytes, PercentOfFileBytes(header_bytes));
	os << StringPrintf("\tobject_bytes = %10d (%2.0f%% of file_bytes)\n",
	object_bytes, PercentOfFileBytes(object_bytes));
	os << StringPrintf("\talignment_bytes = %10d (%2.0f%% of file_bytes)\n",
	alignment_bytes, PercentOfFileBytes(alignment_bytes));
	os << "\n";
	os << std::flush;
	CHECK_EQ(file_bytes, header_bytes + object_bytes + alignment_bytes);

	os << "\tobject_bytes = sum of descriptor_to_bytes values below:\n";
	size_t object_bytes_total = 0;
	typedef TableBytes::const_iterator It; // TODO: C++0x auto
	for (It it = descriptor_to_bytes.begin(), end = descriptor_to_bytes.end(); it != end; ++it) {
	const std::string& descriptor = it->first;
	size_t bytes = it->second;
	size_t count = descriptor_to_count[descriptor];
	double average = static_cast<double>(bytes) / static_cast<double>(count);
	double percent = PercentOfObjectBytes(bytes);
	os << StringPrintf("\t%32s %8d bytes %6d instances "
	"(%3.0f bytes/instance) %2.0f%% of object_bytes\n",
	descriptor.c_str(), bytes, count,
	average, percent);

	object_bytes_total += bytes;
	}
	os << "\n";
	os << std::flush;
	CHECK_EQ(object_bytes, object_bytes_total);

	os << StringPrintf("\tmanaged_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	managed_code_bytes, PercentOfObjectBytes(managed_code_bytes));
	os << StringPrintf("\tmanaged_to_native_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	managed_to_native_code_bytes,
	PercentOfObjectBytes(managed_to_native_code_bytes));
	os << StringPrintf("\tnative_to_managed_code_bytes = %8d (%2.0f%% of object_bytes)\n",
	native_to_managed_code_bytes,
	PercentOfObjectBytes(native_to_managed_code_bytes));
	os << "\n";
	os << std::flush;

	os << StringPrintf("\tregister_map_bytes = %7d (%2.0f%% of object_bytes)\n",
	register_map_bytes, PercentOfObjectBytes(register_map_bytes));
	os << StringPrintf("\tpc_mapping_table_bytes = %7d (%2.0f%% of object_bytes)\n",
	pc_mapping_table_bytes, PercentOfObjectBytes(pc_mapping_table_bytes));
	os << "\n";
	os << std::flush;

	os << StringPrintf("\tdex_instruction_bytes = %d\n", dex_instruction_bytes);
	os << StringPrintf("\tmanaged_code_bytes expansion = %.2f\n",
	static_cast<double>(managed_code_bytes)
	/ static_cast<double>(dex_instruction_bytes));
	os << "\n";
	os << std::flush;

	}
	} stats_;

	private:
	const Space& dump_space_;
	std::ostream& os_;

	DISALLOW_COPY_AND_ASSIGN(OatDump);
	};

	int oatdump(int argc, char** argv) {
	// Skip over argv[0].
	argv++;
	argc--;

	if (argc == 0) {
	fprintf(stderr, "no arguments specified\n");
	usage();
	}

	const char* image_filename = NULL;
	const char* boot_image_filename = NULL;
	std::string host_prefix;
	std::ostream* os = &std::cout;
	UniquePtr<std::ofstream> out;

	for (int i = 0; i < argc; i++) {
	const StringPiece option(argv[i]);
	if (option.starts_with("--image=")) {
	image_filename = option.substr(strlen("--image=")).data();
	} else if (option.starts_with("--boot-image=")) {
	boot_image_filename = option.substr(strlen("--boot-image=")).data();
	} else if (option.starts_with("--host-prefix=")) {
	host_prefix = option.substr(strlen("--host-prefix=")).data();
	} else if (option.starts_with("--output=")) {
	const char* filename = option.substr(strlen("--output=")).data();
	out.reset(new std::ofstream(filename));
	if (!out->good()) {
	fprintf(stderr, "failed to open output filename %s\n", filename);
	usage();
	}
	os = out.get();
	} else {
	fprintf(stderr, "unknown argument %s\n", option.data());
	usage();
	}
	}

	if (image_filename == NULL) {
	fprintf(stderr, "--image file name not specified\n");
	return EXIT_FAILURE;
	}

	Runtime::Options options;
	std::string image_option;
	std::string oat_option;
	std::string boot_image_option;
	std::string boot_oat_option;
	if (boot_image_filename != NULL) {
	boot_image_option += "-Ximage:";
	boot_image_option += boot_image_filename;
	options.push_back(std::make_pair(boot_image_option.c_str(), reinterpret_cast<void*>(NULL)));
	}
	image_option += "-Ximage:";
	image_option += image_filename;
	options.push_back(std::make_pair(image_option.c_str(), reinterpret_cast<void*>(NULL)));

	if (!host_prefix.empty()) {
	options.push_back(std::make_pair("host-prefix", host_prefix.c_str()));
	}

	UniquePtr<Runtime> runtime(Runtime::Create(options, false));
	if (runtime.get() == NULL) {
	fprintf(stderr, "could not create runtime\n");
	return EXIT_FAILURE;
	}

	Space* image_space = Heap::GetSpaces()[Heap::GetSpaces().size()-2];
	CHECK(image_space != NULL);
	const ImageHeader& image_header = image_space->GetImageHeader();
	if (!image_header.IsValid()) {
	fprintf(stderr, "invalid image header %s\n", image_filename);
	return EXIT_FAILURE;
	}
	OatDump::Dump(image_filename, os, image_space, image_header);
	return EXIT_SUCCESS;
	}

	} // namespace art

	int main(int argc, char** argv) {
	return art::oatdump(argc, argv);
	}