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userpicker_dev_shell.txt
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userpicker_dev_shell.txt
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在生成的fuchsia映像里，dart程序都是以snapshot的形式存在于data目录下：
isolate_snapshot_data.bin
isolate_snapshot_instructions.bin
shared_snapshot_data.bin
shared_snapshot_instructions.bin
vm_snapshot_data.bin
vm_snapshot_instructions.bin
userpicker device shell的构建
[10653/22566] /usr/bin/env ../../build/gn/write_package_json.py
--name userpicker_device_shell
--version 0
obj/topaz/bin/userpicker_device_shell/userpicker_device_shell_meta_package.json
这个命令输出一个package file
{"version": "0", "name": "userpicker_device_shell"}
build/dart/gen_dot_packages.py
--out /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.packages
--source-dir /data/download/fuchsia/topaz/bin/userpicker_device_shell/lib
--deps /data/download/fuchsia/out/j1/dartlang/gen/garnet/public/fidl/fuchsia.timezone/fuchsia.timezone.packages
/data/download/fuchsia/out/j1/dartlang/gen/garnet/public/fidl/fuchsia.ui.input/fuchsia.ui.input.packages
/data/download/fuchsia/out/j1/dartlang/gen/garnet/public/fidl/fuchsia.ui.views_v1/fuchsia.ui.views_v1.packages
/data/download/fuchsia/out/j1/dartlang/gen/peridot/public/fidl/fuchsia.modular/fuchsia.modular.packages
/data/download/fuchsia/out/j1/dartlang/gen/peridot/public/fidl/fuchsia.modular.auth/fuchsia.modular.auth.packages
/data/download/fuchsia/out/j1/dartlang/gen/third_party/dart-pkg/git/flutter/packages/flutter/flutter.packages
/data/download/fuchsia/out/j1/dartlang/gen/third_party/dart-pkg/pub/http/http.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/lib/device_shell/lib.device_shell.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/lib/settings/lib.settings.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/public/dart/fidl/fidl.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/public/dart/widgets/lib.widgets.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/public/lib/app/dart/dart.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/public/lib/ui/flutter/flutter.packages
/data/download/fuchsia/out/j1/dartlang/gen/topaz/shell/widgets/widgets.packages
--package-name userpicker_device_shell
上面的命令作用是把source dir和deps的路径都收集在一起，写到.packages文件里。
../../build/dart/identify_sources.py
--gen-snapshot /data/download/fuchsia/topaz/tools/prebuilt-dart-sdk/linux-x64/bin/gen_snapshot.fuchsia-x64
--sources /data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/authentication_context_impl.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/authentication_overlay.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/authentication_overlay_model.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/circular_button.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/clock.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/user_list.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/user_picker_device_shell_model.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/user_picker_device_shell_screen.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/user_picker_screen.dart
/data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/main.dart
--packages /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.packages
--source-dir /data/download/fuchsia/topaz/bin/userpicker_device_shell/lib
--output /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.sources
--depfile /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library_identify_sources.d
--depname dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.sources
--url-mapping dart:zircon,/data/download/fuchsia/topaz/public/dart-pkg/zircon/lib/zircon.dart dart:fuchsia,/data/download/fuchsia/topaz/public/dart-pkg/fuchsia/lib/fuchsia.dart dart:mozart.internal,/data/download/fuchsia/topaz/public/lib/ui/flutter/sdk_ext/mozart.dart dart:ui,/data/download/fuchsia/third_party/flutter/lib/ui/ui.dart
这个命令生成一个包含dart源文件列表的文件
# Uses the Dart snapshotter to identify the source files of a library based on
# the list of its public files.
../../build/dart/gen_analyzer_invocation.py
--out /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.analyzer.sh
--source-file /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.sources
--dot-packages /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.packages
--dartanalyzer /data/download/fuchsia/topaz/tools/prebuilt-dart-sdk/linux-x64/bin/dartanalyzer
--dart-sdk /data/download/fuchsia/topaz/tools/prebuilt-dart-sdk/linux-x64
--options /data/download/fuchsia/topaz/bin/userpicker_device_shell/analysis_options.yaml
--package-name userpicker_device_shell
Generate a script that invokes the Dart analyzer
对代码做静态分析，检查错误
/usr/bin/env ../../build/dart/run_analysis.py
/usr/bin/env host_x64/dart-tools/kernel_compiler
--aot --target flutter_runner --sdk-root /data/download/fuchsia/out/j1/flutter_runner_patched_sdk
--packages /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.packages
--depfile gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_kernel.dil.d
--output gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_kernel.dil
--embed-sources /data/download/fuchsia/topaz/bin/userpicker_device_shell/lib/main.dart
这个命令是生成kernel语言表示。
/usr/bin/env ../../topaz/tools/prebuilt-dart-sdk/linux-x64/bin/gen_snapshot.fuchsia-x64
--reify_generic_functions --strong --deterministic --snapshot_kind=app-aot-blobs
--vm_snapshot_data=/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_vm_data.aotsnapshot
--vm_snapshot_instructions=/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_vm_instructions.aotsnapshot
--isolate_snapshot_data=/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_data.aotsnapshot
--isolate_snapshot_instructions=/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_instructions.aotsnapshot
--shared_data=/data/download/fuchsia/topaz/runtime/dart_runner/empty --shared_instructions=/data/download/fuchsia/topaz/runtime/dart_runner/empty
--print-instructions-sizes-to=/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell/stats/symbol_sizes.json
--embedder_entry_points_manifest=/data/download/fuchsia/third_party/dart/runtime/bin/dart_io_entries.txt
--embedder_entry_points_manifest=/data/download/fuchsia/third_party/flutter/runtime/dart_vm_entry_points.txt
--embedder_entry_points_manifest=/data/download/fuchsia/topaz/runtime/flutter_runner/dart_vm_entry_points_fuchsia.txt
--enable_asserts /data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_kernel.dil
create an AOT application snapshot as blobs suitable for loading with mmap
../../topaz/runtime/flutter_runner/build/asset_package.py --flutter-root /data/download/fuchsia/third_party/dart-pkg/git/flutter
--flutter-tools /data/download/fuchsia/out/j1/host_x64/dart-tools/fuchsia_asset_builder
--app-dir /data/download/fuchsia/topaz/bin/userpicker_device_shell
--asset-dir /data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/build
--packages /data/download/fuchsia/out/j1/dartlang/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell_dart_library.packages
--asset-manifest-out /data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/build/userpicker_device_shell_pkgassets
--manifest /data/download/fuchsia/topaz/bin/userpicker_device_shell/pubspec.yaml
Package a Flutter application
../../third_party/dart/build/gn_run_binary.py compiled_action
/data/download/fuchsia/topaz/tools/prebuilt-dart-sdk/linux-x64/bin/dart
/data/download/fuchsia/third_party/dart/pkg/vm/bin/run_binary_size_analysis.dart
/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell/stats/symbol_sizes.json
/data/download/fuchsia/out/j1/gen/topaz/bin/userpicker_device_shell/userpicker_device_shell/stats
This tool is used to process snapshot size reports produced by
--print-instructions-sizes-to=symbol-sizes.json.
It will create an interactive web-page in the output-directory which can be
viewed in a browser:
../../build/images/finalize_manifests.py
--depfile=obj/topaz/bin/userpicker_device_shell/userpicker_device_shell.manifest.d
--build-id-file=obj/topaz/bin/userpicker_device_shell/userpicker_device_shell.manifest.ids.txt
--stripped-dir=obj/topaz/bin/userpicker_device_shell/userpicker_device_shell.manifest.stripped
@__topaz_bin_userpicker_device_shell_userpicker_device_shell.manifest___build_toolchain_fuchsia_x64__rule..rsp
It emits final /boot and /system manifests used to make the actual images,
final archive manifests used to make each package, and the build ID map.
../../build/gn_run_binary.sh
../../buildtools/linux-x64/clang/bin host_x64/pm
-k ../../build/development.key
-o obj/topaz/bin/userpicker_device_shell/userpicker_device_shell.meta
-m obj/topaz/bin/userpicker_device_shell/userpicker_device_shell.manifest build
pm是fuchsia package manager.
../../build/images/manifest.py --contents --output=obj/build/images/pkgsvr_index
../../build/images/manifest.py --contents --output obj/build/images/update_packages.manifest
../../build/images/manifest.py --absolute --output=obj/build/images/amber_index
load
对userpicker_device_shell的加载应该是走directory
RootLoader::LoadComponent
==========================
package.directory = std::move(directory); // "/pkgfs/packages/userpicker_device_shell"
package.resolved_url = fxl::Concatenate({"file://", pkg_path});
callback(fidl::MakeOptional(std::move(package)));
CreateComponentFromPackage(
std::move(package), std::move(launch_info),
std::move(controller), std::move(ns), fbl::move(callback));
fd是通向目录"/pkgfs/packages/userpicker_device_shell"
cmx_data
{
"program": {
"binary": "bin/app"
},
"sandbox": {
"dev": [ "misc" ],
"system": [ "data/sysui" ]
}
}
runtime_data
{
"runner": "flutter_aot_runner"
}
appdata "bin/app" not exist
exported_dir_layout = ExportedDirType::kPublicDebugCtrlLayout;
GetOrCreateRunner(runtime.runner());
result.first->second = std::make_unique<RunnerHolder>(
std::move(runner_services), std::move(runner_controller),
std::move(runner_launch_info), this,
[this, runner] { runners_.erase(runner); });
RunnerHolder::RunnerHolder()
realm->CreateComponent(std::move(launch_info), controller_.NewRequest(),
[this](ComponentControllerImpl* component) {
CreateComponentCallback(component);
});
callback(key);
CreateComponentCallback(component);
services_.ConnectToService(runner_.NewRequest());
要去加载flutter_aot_runner了。它有bin/app
RuntimeHolder在构造时就会启动flutter_aot_runner, 并连接它的服务
runner->StartComponent(std::move(inner_package), std::move(startup_info),
std::move(ns), std::move(controller));
启动inner_package
转入flutter_aot_runner