asiva
5399dbf6f6
- split the Dart CLI tool out of the VM into it's own embedder which runs in AOT mode. The pure Dart VM executable is called 'dartvm' and has no Dart CLI functionality in it - the Dart CLI executable parses the CLI commands and invokes the rest of the AOT tools in the same process, for the 'run' and 'test' commands it execs a process which runs 'dartvm' to run - 'dart hello.dart' execs the 'dartvm' process and runs 'hello.dart' - the Dart CLI is not generated for ia32 as we are not shipping a Dart SDK for ia32 anymore (support to execute the 'dartvm' for ia32 architecture is retained) - the Dart CLI tool is not built in the internal Dart SDK builds TEST=ci Some performance improvement numbers 'dart format pkg/dartdev' goes from 1.17 secs to 0.22 secs 'dart doc pkg/dartdev' goes from 100.2 secs to 66.6 secs 'dart fix pkg/dartdev' goes from 19.3 secs to 14.5 secs Change-Id: I66984a26cb2ab014b34dc1873f1f3d2884e13518 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/364202 Commit-Queue: Ben Konyi <bkonyi@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com>
A package used to spawn the Dart Developer Service (DDS), which is used to communicate with a Dart VM Service instance and provide extended functionality to the core VM Service Protocol.
Functionality
Existing VM Service clients can issue both HTTP, websocket, and SSE requests to a running DDS instance as if it were an instance of the VM Service itself. If a request corresponds to an RPC defined in the VM Service Protocol, DDS will forward the request and return the response from the VM Service. Requests corresponding to an RPC defined in the DDS Protocol will be handled directly by the DDS instance.
SSE Support
For certain web clients it may be preferable or required to communicate with DDS using server-sent events (SSE). DDS has an SSE handler listening for requests on /$debugHandler.
SSE and package:vm_service example
import 'package:sse/sse.dart';
import 'package:vm_service/vm_service.dart';
void main() {
// Establish connection with DDS using SSE.
final ddsChannel = SseClient('${ddsUri}\$debugHandler');
// Wait for ddsChannel to be established
await ddsChannel.onOpen.first;
// Initialize VmService using the sink and stream from ddsChannel.
final vmService = VmService(
ddsChannel.stream,
(e) => ddsChannel.sink.add(e),
);
// You're ready to query DDS and the VM service!
print(await vmService.getVersion());
}