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496 lines
21 KiB
496 lines
21 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "dexoptanalyzer.h"
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#include <iostream>
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#include <string>
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#include <string_view>
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#include "android-base/stringprintf.h"
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#include "android-base/strings.h"
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#include "base/compiler_filter.h"
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#include "base/file_utils.h"
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#include "base/logging.h" // For InitLogging.
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#include "base/mutex.h"
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#include "base/os.h"
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#include "base/string_view_cpp20.h"
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#include "base/utils.h"
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#include "class_linker.h"
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#include "class_loader_context.h"
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#include "dex/dex_file.h"
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#include "gc/heap.h"
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#include "gc/space/image_space.h"
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#include "noop_compiler_callbacks.h"
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#include "oat.h"
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#include "oat_file_assistant.h"
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#include "runtime.h"
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#include "thread-inl.h"
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#include "vdex_file.h"
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namespace art {
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namespace dexoptanalyzer {
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static int original_argc;
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static char** original_argv;
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static std::string CommandLine() {
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std::vector<std::string> command;
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command.reserve(original_argc);
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for (int i = 0; i < original_argc; ++i) {
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command.push_back(original_argv[i]);
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}
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return android::base::Join(command, ' ');
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}
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static void UsageErrorV(const char* fmt, va_list ap) {
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std::string error;
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android::base::StringAppendV(&error, fmt, ap);
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LOG(ERROR) << error;
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}
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static void UsageError(const char* fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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UsageErrorV(fmt, ap);
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va_end(ap);
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}
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NO_RETURN static void Usage(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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UsageErrorV(fmt, ap);
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va_end(ap);
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UsageError("Command: %s", CommandLine().c_str());
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UsageError(" Performs a dexopt analysis on the given dex file and returns whether or not");
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UsageError(" the dex file needs to be dexopted.");
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UsageError("Usage: dexoptanalyzer [options]...");
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UsageError("");
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UsageError(" --dex-file=<filename>: the dex file which should be analyzed.");
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UsageError("");
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UsageError(" --isa=<string>: the instruction set for which the analysis should be performed.");
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UsageError("");
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UsageError(" --compiler-filter=<string>: the target compiler filter to be used as reference");
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UsageError(" when deciding if the dex file needs to be optimized.");
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UsageError("");
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UsageError(" --profile_analysis_result=<int>: the result of the profile analysis, used in");
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UsageError(" deciding if the dex file needs to be optimized.");
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UsageError("");
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UsageError(" --image=<filename>: optional, the image to be used to decide if the associated");
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UsageError(" oat file is up to date. Defaults to $ANDROID_ROOT/framework/boot.art.");
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UsageError(" Example: --image=/system/framework/boot.art");
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UsageError("");
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UsageError(" --runtime-arg <argument>: used to specify various arguments for the runtime,");
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UsageError(" such as initial heap size, maximum heap size, and verbose output.");
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UsageError(" Use a separate --runtime-arg switch for each argument.");
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UsageError(" Example: --runtime-arg -Xms256m");
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UsageError("");
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UsageError(" --android-data=<directory>: optional, the directory which should be used as");
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UsageError(" android-data. By default ANDROID_DATA env variable is used.");
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UsageError("");
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UsageError(" --oat-fd=number: file descriptor of the oat file which should be analyzed");
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UsageError("");
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UsageError(" --vdex-fd=number: file descriptor of the vdex file corresponding to the oat file");
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UsageError("");
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UsageError(" --zip-fd=number: specifies a file descriptor corresponding to the dex file.");
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UsageError("");
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UsageError(" --downgrade: optional, if the purpose of dexopt is to downgrade the dex file");
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UsageError(" By default, dexopt considers upgrade case.");
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UsageError("");
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UsageError(" --class-loader-context=<string spec>: a string specifying the intended");
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UsageError(" runtime loading context for the compiled dex files.");
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UsageError("");
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UsageError(" --class-loader-context-fds=<fds>: a colon-separated list of file descriptors");
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UsageError(" for dex files in --class-loader-context. Their order must be the same as");
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UsageError(" dex files in flattened class loader context.");
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UsageError("");
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UsageError(" --flatten-class-loader-context: parse --class-loader-context, flatten it and");
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UsageError(" print a colon-separated list of its dex files to standard output. Dexopt");
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UsageError(" needed analysis is not performed when this option is set.");
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UsageError("");
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UsageError(" --validate-bcp: validates the boot class path files (.art, .oat, .vdex).");
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UsageError(" Requires --isa and --image options to locate artifacts.");
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UsageError("");
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UsageError("Return code:");
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UsageError(" To make it easier to integrate with the internal tools this command will make");
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UsageError(" available its result (dexoptNeeded) as the exit/return code. i.e. it will not");
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UsageError(" return 0 for success and a non zero values for errors as the conventional");
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UsageError(" commands. The following return codes are possible:");
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UsageError(" kNoDexOptNeeded = 0");
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UsageError(" kDex2OatFromScratch = 1");
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UsageError(" kDex2OatForBootImageOat = 2");
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UsageError(" kDex2OatForFilterOat = 3");
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UsageError(" kDex2OatForBootImageOdex = 4");
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UsageError(" kDex2OatForFilterOdex = 5");
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UsageError(" kErrorInvalidArguments = 101");
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UsageError(" kErrorCannotCreateRuntime = 102");
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UsageError(" kErrorUnknownDexOptNeeded = 103");
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UsageError("");
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exit(static_cast<int>(ReturnCode::kErrorInvalidArguments));
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}
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class DexoptAnalyzer final {
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public:
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DexoptAnalyzer() :
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only_flatten_context_(false),
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only_validate_bcp_(false),
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downgrade_(false) {}
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void ParseArgs(int argc, char **argv) {
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original_argc = argc;
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original_argv = argv;
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Locks::Init();
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InitLogging(argv, Runtime::Abort);
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// Skip over the command name.
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argv++;
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argc--;
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if (argc == 0) {
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Usage("No arguments specified");
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}
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for (int i = 0; i < argc; ++i) {
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const char* raw_option = argv[i];
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const std::string_view option(raw_option);
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if (StartsWith(option, "--profile-analysis-result=")) {
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int parse_result = std::stoi(std::string(
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option.substr(strlen("--profile-analysis-result="))), nullptr, 0);
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if (parse_result != static_cast<int>(ProfileAnalysisResult::kOptimize) &&
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parse_result != static_cast<int>(ProfileAnalysisResult::kDontOptimizeSmallDelta) &&
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parse_result != static_cast<int>(ProfileAnalysisResult::kDontOptimizeEmptyProfiles)) {
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Usage("Invalid --profile-analysis-result= %d", parse_result);
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}
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profile_analysis_result_ = static_cast<ProfileAnalysisResult>(parse_result);
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} else if (StartsWith(option, "--dex-file=")) {
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dex_file_ = std::string(option.substr(strlen("--dex-file=")));
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} else if (StartsWith(option, "--compiler-filter=")) {
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const char* filter_str = raw_option + strlen("--compiler-filter=");
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if (!CompilerFilter::ParseCompilerFilter(filter_str, &compiler_filter_)) {
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Usage("Invalid compiler filter '%s'", raw_option);
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}
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} else if (StartsWith(option, "--isa=")) {
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const char* isa_str = raw_option + strlen("--isa=");
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isa_ = GetInstructionSetFromString(isa_str);
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if (isa_ == InstructionSet::kNone) {
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Usage("Invalid isa '%s'", raw_option);
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}
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} else if (StartsWith(option, "--image=")) {
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image_ = std::string(option.substr(strlen("--image=")));
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} else if (option == "--runtime-arg") {
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if (i + 1 == argc) {
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Usage("Missing argument for --runtime-arg\n");
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}
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++i;
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runtime_args_.push_back(argv[i]);
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} else if (StartsWith(option, "--android-data=")) {
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// Overwrite android-data if needed (oat file assistant relies on a valid directory to
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// compute dalvik-cache folder). This is mostly used in tests.
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const char* new_android_data = raw_option + strlen("--android-data=");
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setenv("ANDROID_DATA", new_android_data, 1);
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} else if (option == "--downgrade") {
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downgrade_ = true;
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} else if (StartsWith(option, "--oat-fd=")) {
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oat_fd_ = std::stoi(std::string(option.substr(strlen("--oat-fd="))), nullptr, 0);
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if (oat_fd_ < 0) {
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Usage("Invalid --oat-fd %d", oat_fd_);
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}
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} else if (StartsWith(option, "--vdex-fd=")) {
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vdex_fd_ = std::stoi(std::string(option.substr(strlen("--vdex-fd="))), nullptr, 0);
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if (vdex_fd_ < 0) {
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Usage("Invalid --vdex-fd %d", vdex_fd_);
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}
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} else if (StartsWith(option, "--zip-fd=")) {
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zip_fd_ = std::stoi(std::string(option.substr(strlen("--zip-fd="))), nullptr, 0);
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if (zip_fd_ < 0) {
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Usage("Invalid --zip-fd %d", zip_fd_);
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}
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} else if (StartsWith(option, "--class-loader-context=")) {
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context_str_ = std::string(option.substr(strlen("--class-loader-context=")));
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} else if (StartsWith(option, "--class-loader-context-fds=")) {
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std::string str_context_fds_arg =
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std::string(option.substr(strlen("--class-loader-context-fds=")));
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std::vector<std::string> str_fds = android::base::Split(str_context_fds_arg, ":");
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for (const std::string& str_fd : str_fds) {
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context_fds_.push_back(std::stoi(str_fd, nullptr, 0));
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if (context_fds_.back() < 0) {
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Usage("Invalid --class-loader-context-fds %s", str_context_fds_arg.c_str());
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}
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}
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} else if (option == "--flatten-class-loader-context") {
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only_flatten_context_ = true;
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} else if (option == "--validate-bcp") {
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only_validate_bcp_ = true;
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} else {
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Usage("Unknown argument '%s'", raw_option);
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}
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}
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if (image_.empty()) {
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// If we don't receive the image, try to use the default one.
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// Tests may specify a different image (e.g. core image).
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std::string error_msg;
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image_ = GetDefaultBootImageLocation(&error_msg);
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if (image_.empty()) {
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LOG(ERROR) << error_msg;
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Usage("--image unspecified and ANDROID_ROOT not set or image file does not exist.");
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}
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}
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}
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bool CreateRuntime() const {
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RuntimeOptions options;
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// The image could be custom, so make sure we explicitly pass it.
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std::string img = "-Ximage:" + image_;
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options.push_back(std::make_pair(img, nullptr));
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// The instruction set of the image should match the instruction set we will test.
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const void* isa_opt = reinterpret_cast<const void*>(GetInstructionSetString(isa_));
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options.push_back(std::make_pair("imageinstructionset", isa_opt));
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// Explicit runtime args.
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for (const char* runtime_arg : runtime_args_) {
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options.push_back(std::make_pair(runtime_arg, nullptr));
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}
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// Disable libsigchain. We don't don't need it to evaluate DexOptNeeded status.
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options.push_back(std::make_pair("-Xno-sig-chain", nullptr));
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// Pretend we are a compiler so that we can re-use the same infrastructure to load a different
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// ISA image and minimize the amount of things that get started.
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NoopCompilerCallbacks callbacks;
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options.push_back(std::make_pair("compilercallbacks", &callbacks));
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// Make sure we don't attempt to relocate. The tool should only retrieve the DexOptNeeded
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// status and not attempt to relocate the boot image.
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options.push_back(std::make_pair("-Xnorelocate", nullptr));
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if (!Runtime::Create(options, false)) {
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LOG(ERROR) << "Unable to initialize runtime";
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return false;
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}
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// Runtime::Create acquired the mutator_lock_ that is normally given away when we
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// Runtime::Start. Give it away now.
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Thread::Current()->TransitionFromRunnableToSuspended(kNative);
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return true;
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}
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ReturnCode GetDexOptNeeded() const {
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if (!CreateRuntime()) {
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return ReturnCode::kErrorCannotCreateRuntime;
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}
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std::unique_ptr<Runtime> runtime(Runtime::Current());
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// Only when the runtime is created can we create the class loader context: the
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// class loader context will open dex file and use the MemMap global lock that the
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// runtime owns.
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std::unique_ptr<ClassLoaderContext> class_loader_context;
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if (!context_str_.empty()) {
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class_loader_context = ClassLoaderContext::Create(context_str_);
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if (class_loader_context == nullptr) {
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Usage("Invalid --class-loader-context '%s'", context_str_.c_str());
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}
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}
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if (class_loader_context != nullptr) {
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size_t dir_index = dex_file_.rfind('/');
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std::string classpath_dir = (dir_index != std::string::npos)
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? dex_file_.substr(0, dir_index)
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: "";
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if (!class_loader_context->OpenDexFiles(classpath_dir,
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context_fds_,
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/*only_read_checksums=*/ true)) {
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return ReturnCode::kDex2OatFromScratch;
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}
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}
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std::unique_ptr<OatFileAssistant> oat_file_assistant;
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oat_file_assistant = std::make_unique<OatFileAssistant>(dex_file_.c_str(),
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isa_,
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class_loader_context.get(),
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/*load_executable=*/ false,
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/*only_load_trusted_executable=*/ false,
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vdex_fd_,
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oat_fd_,
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zip_fd_);
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// Always treat elements of the bootclasspath as up-to-date.
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// TODO(calin): this check should be in OatFileAssistant.
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if (oat_file_assistant->IsInBootClassPath()) {
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return ReturnCode::kNoDexOptNeeded;
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}
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// If the compiler filter depends on profiles but the profiles are empty,
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// change the test filter to kVerify. It's what dex2oat also does.
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CompilerFilter::Filter actual_compiler_filter = compiler_filter_;
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if (CompilerFilter::DependsOnProfile(compiler_filter_) &&
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profile_analysis_result_ == ProfileAnalysisResult::kDontOptimizeEmptyProfiles) {
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actual_compiler_filter = CompilerFilter::kVerify;
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}
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// TODO: GetDexOptNeeded should get the raw analysis result instead of assume_profile_changed.
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bool assume_profile_changed = profile_analysis_result_ == ProfileAnalysisResult::kOptimize;
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int dexoptNeeded = oat_file_assistant->GetDexOptNeeded(actual_compiler_filter,
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assume_profile_changed,
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downgrade_);
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// Convert OatFileAssistant codes to dexoptanalyzer codes.
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switch (dexoptNeeded) {
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case OatFileAssistant::kNoDexOptNeeded: return ReturnCode::kNoDexOptNeeded;
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case OatFileAssistant::kDex2OatFromScratch: return ReturnCode::kDex2OatFromScratch;
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case OatFileAssistant::kDex2OatForBootImage: return ReturnCode::kDex2OatForBootImageOat;
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case OatFileAssistant::kDex2OatForFilter: return ReturnCode::kDex2OatForFilterOat;
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case -OatFileAssistant::kDex2OatForBootImage: return ReturnCode::kDex2OatForBootImageOdex;
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case -OatFileAssistant::kDex2OatForFilter: return ReturnCode::kDex2OatForFilterOdex;
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default:
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LOG(ERROR) << "Unknown dexoptNeeded " << dexoptNeeded;
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return ReturnCode::kErrorUnknownDexOptNeeded;
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}
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}
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// Validates the boot classpath and boot classpath extensions by checking the image checksums,
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// the oat files and the vdex files.
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//
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// Returns `ReturnCode::kNoDexOptNeeded` when all the files are up-to-date,
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// `ReturnCode::kDex2OatFromScratch` if any of the files are missing or out-of-date, and
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// `ReturnCode::kErrorCannotCreateRuntime` if the files could not be tested due to problem
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// creating a runtime.
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ReturnCode ValidateBcp() const {
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using ImageSpace = gc::space::ImageSpace;
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if (!CreateRuntime()) {
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return ReturnCode::kErrorCannotCreateRuntime;
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}
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std::unique_ptr<Runtime> runtime(Runtime::Current());
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auto dex_files = ArrayRef<const DexFile* const>(runtime->GetClassLinker()->GetBootClassPath());
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auto boot_image_spaces = ArrayRef<ImageSpace* const>(runtime->GetHeap()->GetBootImageSpaces());
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const std::string checksums = ImageSpace::GetBootClassPathChecksums(boot_image_spaces,
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dex_files);
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std::string error_msg;
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const std::vector<std::string>& bcp = runtime->GetBootClassPath();
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const std::vector<std::string>& bcp_locations = runtime->GetBootClassPathLocations();
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const std::string bcp_locations_path = android::base::Join(bcp_locations, ':');
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if (!ImageSpace::VerifyBootClassPathChecksums(checksums,
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bcp_locations_path,
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runtime->GetImageLocation(),
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ArrayRef<const std::string>(bcp_locations),
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ArrayRef<const std::string>(bcp),
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runtime->GetInstructionSet(),
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&error_msg)) {
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LOG(INFO) << "Failed to verify boot class path checksums: " << error_msg;
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return ReturnCode::kDex2OatFromScratch;
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}
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const auto& image_spaces = runtime->GetHeap()->GetBootImageSpaces();
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size_t bcp_component_count = 0;
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for (const auto& image_space : image_spaces) {
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if (!image_space->GetImageHeader().IsValid()) {
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LOG(INFO) << "Image header is not valid: " << image_space->GetImageFilename();
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return ReturnCode::kDex2OatFromScratch;
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}
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const OatFile* oat_file = image_space->GetOatFile();
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if (oat_file == nullptr) {
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const std::string oat_path = ReplaceFileExtension(image_space->GetImageFilename(), "oat");
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LOG(INFO) << "Oat file missing: " << oat_path;
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return ReturnCode::kDex2OatFromScratch;
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}
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if (!oat_file->GetOatHeader().IsValid() ||
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!ImageSpace::ValidateOatFile(*oat_file, &error_msg)) {
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LOG(INFO) << "Oat file is not valid: " << oat_file->GetLocation() << " " << error_msg;
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return ReturnCode::kDex2OatFromScratch;
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}
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const VdexFile* vdex_file = oat_file->GetVdexFile();
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if (vdex_file == nullptr || !vdex_file->IsValid()) {
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LOG(INFO) << "Vdex file is not valid : " << oat_file->GetLocation();
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return ReturnCode::kDex2OatFromScratch;
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}
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bcp_component_count += image_space->GetComponentCount();
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|
}
|
|
|
|
// If the number of components encountered in the image spaces does not match the number
|
|
// of components expected from the boot classpath locations then something is missing.
|
|
if (bcp_component_count != bcp_locations.size()) {
|
|
for (size_t i = bcp_component_count; i < bcp_locations.size(); ++i) {
|
|
LOG(INFO) << "Missing image file for " << bcp_locations[i];
|
|
}
|
|
return ReturnCode::kDex2OatFromScratch;
|
|
}
|
|
|
|
return ReturnCode::kNoDexOptNeeded;
|
|
}
|
|
|
|
ReturnCode FlattenClassLoaderContext() const {
|
|
DCHECK(only_flatten_context_);
|
|
if (context_str_.empty()) {
|
|
return ReturnCode::kErrorInvalidArguments;
|
|
}
|
|
|
|
std::unique_ptr<ClassLoaderContext> context = ClassLoaderContext::Create(context_str_);
|
|
if (context == nullptr) {
|
|
Usage("Invalid --class-loader-context '%s'", context_str_.c_str());
|
|
}
|
|
|
|
std::cout << context->FlattenDexPaths() << std::flush;
|
|
return ReturnCode::kFlattenClassLoaderContextSuccess;
|
|
}
|
|
|
|
ReturnCode Run() const {
|
|
if (only_flatten_context_) {
|
|
return FlattenClassLoaderContext();
|
|
} else if (only_validate_bcp_) {
|
|
return ValidateBcp();
|
|
} else {
|
|
return GetDexOptNeeded();
|
|
}
|
|
}
|
|
|
|
private:
|
|
std::string dex_file_;
|
|
InstructionSet isa_;
|
|
CompilerFilter::Filter compiler_filter_;
|
|
std::string context_str_;
|
|
bool only_flatten_context_;
|
|
bool only_validate_bcp_;
|
|
ProfileAnalysisResult profile_analysis_result_;
|
|
bool downgrade_;
|
|
std::string image_;
|
|
std::vector<const char*> runtime_args_;
|
|
int oat_fd_ = -1;
|
|
int vdex_fd_ = -1;
|
|
// File descriptor corresponding to apk, dex_file, or zip.
|
|
int zip_fd_ = -1;
|
|
std::vector<int> context_fds_;
|
|
};
|
|
|
|
static ReturnCode dexoptAnalyze(int argc, char** argv) {
|
|
DexoptAnalyzer analyzer;
|
|
|
|
// Parse arguments. Argument mistakes will lead to exit(kErrorInvalidArguments) in UsageError.
|
|
analyzer.ParseArgs(argc, argv);
|
|
return analyzer.Run();
|
|
}
|
|
|
|
} // namespace dexoptanalyzer
|
|
} // namespace art
|
|
|
|
int main(int argc, char **argv) {
|
|
art::dexoptanalyzer::ReturnCode return_code = art::dexoptanalyzer::dexoptAnalyze(argc, argv);
|
|
return static_cast<int>(return_code);
|
|
}
|