tree 09ca70dc04dcbf9df87d00b4cdc5111e3e1974cc
parent 3d1f6a48b79e2cc5a4ee9d2ea3a7a385a3b33eaa
author Clement Skau <cskau@google.com> 1637218617 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1637218617 +0000

[vm] Elaborate on DartDev missing error.

This change refactors CreateAndSetupDartDevIsolate slightly to
exit as soon as we know we cannot resolve DartDev.
Expands on the error message to be a bit more informative about
what went wrong.

Before:
  Failed to start the Dart CLI isolate
  (null).
  Observatory server failed to start after 1 tries
  [...]

After:
  Failed to start the Dart CLI isolate. Could not resolve DartDev snapshot or kernel.
  [...]

TEST=CQ

Change-Id: Iad3302dc4e64eef06b97c8b76a82b04c97a7089e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/220546
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>