DEV/flutter_flutter
1
0
Fork 0
mirror of https://github.com/flutter/flutter.git synced 2026-02-20 02:29:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

Train frontend_server snapshot (flutter/engine#4512)

Browse Source 
Cuts 30% from hot-reload benchmarks with `--preview-dart-2`
This commit is contained in:
jensjoha 2018-01-15 15:59:57 +01:00 committed by Vyacheslav Egorov
parent 2ad5b735d0
commit d7e7abbcc2
3 changed files with 17 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
engine/src/flutter/frontend_server/BUILD.gn
View File

@ -7,7 +7,8 @@ import("//third_party/dart/utils/application_snapshot.gni")
application_snapshot("frontend_server") {
main_dart = "bin/starter.dart"
dot_packages = rebase_path(".packages")
training_args = [ "--train" ]
flutter_patched_sdk = rebase_path("$root_out_dir/flutter_patched_sdk")
training_args = [ "--train", "--sdk-root=$flutter_patched_sdk" ]
frontend_server_files = exec_script("//third_party/dart/tools/list_dart_files.py",
[ "absolute", rebase_path("."), ], "list lines")

11
engine/src/flutter/frontend_server/lib/server.dart
View File

@ -261,6 +261,17 @@ Future<int> starter(
}
if (options['train']) {
final String sdkRoot = options['sdk-root'];
options = _argParser.parse(<String>['--incremental', '--sdk-root=$sdkRoot']);
compiler ??= new _FrontendCompiler(output, printerFactory: binaryPrinterFactory);
await compiler.compile(Platform.script.toFilePath(), options, generator: generator);
compiler.acceptLastDelta();
await compiler.recompileDelta();
compiler.acceptLastDelta();
await compiler.recompileDelta();
compiler.acceptLastDelta();
await compiler.recompileDelta();
compiler.acceptLastDelta();
return 0;
}

6
engine/src/flutter/frontend_server/test/server_test.dart
View File

@ -26,8 +26,10 @@ class _MockedBinaryPrinter extends Mock implements BinaryPrinter {}
Future<int> main() async {
group('basic', () {
test('train completes', () async {
expect(await starter(<String>['--train']), equals(0));
final CompilerInterface compiler = new _MockedCompiler();
test('train with mocked compiler completes', () async {
expect(await starter(<String>['--train'], compiler: compiler), equals(0));
});
});