first commit

.github/dependabot.yaml

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+# Dependabot configuration file.
+version: 2
+
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
+    labels:
+      - autosubmit

.github/workflows/dart.yaml

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+name: Dart
+
+on:
+  schedule:
+    # “At 00:00 (UTC) on Sunday.”
+    - cron: '0 0 * * 0'
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # These are the latest versions of the github actions; dependabot will
+      # send PRs to keep these up-to-date.
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+      - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
+
+      - name: Install dependencies
+        run: dart pub get
+
+      - name: Verify formatting
+        run: dart format --output=none --set-exit-if-changed .
+
+      - name: Analyze project source
+        run: dart analyze --fatal-infos
+
+      # - name: Run tests
+      #   run: dart test

.gitignore

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+# Files and directories created by pub.
+.dart_tool/
+.packages
+
+# Conventional directory for build outputs.
+build/
+
+# Omit committing pubspec.lock for library packages; see
+# https://dart.dev/guides/libraries/private-files#pubspeclock.
+pubspec.lock

CHANGELOG.md

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+## 0.1.0-wip
+
+- Initial version.

LICENSE

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+Copyright 2023, the Dart project authors.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google LLC nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+[![Dart](https://github.com/dart-lang/native_synchronization/actions/workflows/dart.yaml/badge.svg)](https://github.com/dart-lang/native_synchronization/actions/workflows/dart.yaml)
+
+Low level synchronization primitives built on dart:ffi.
+
+## TODO: Projects docs
+
+TODO: Add a brief project description here.
+
+## Status: experimental
+
+**NOTE**: This package is currently experimental and published under the
+[labs.dart.dev](https://dart.dev/dart-team-packages) pub publisher in order to
+solicit feedback. 
+
+For packages in the labs.dart.dev publisher we generally plan to either graduate
+the package into a supported publisher (dart.dev, tools.dart.dev) after a period
+of feedback and iteration, or discontinue the package. These packages have a
+much higher expected rate of API and breaking changes.
+
+Your feedback is valuable and will help us evolve this package. For general
+feedback, suggestions, and comments, please file an issue in the 
+[bug tracker](https://github.com/dart-lang/native_synchronization/issues).

analysis_options.yaml

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+include: package:dart_flutter_team_lints/analysis_options.yaml

lib/sample.dart

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+// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+void main(List<String> args) {
+  print('hello world');
+}

pubspec.yaml

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+name: native_synchronization
+description: Low level synchronization primitives built on dart:ffi.
+version: 0.1.0-wip
+repository: https://github.com/dart-lang/native_synchronization
+
+environment:
+  sdk: ^3.0.0
+
+dependencies:
+  # lib_name: ^1.2.0
+
+dev_dependencies:
+  dart_flutter_team_lints: ^1.0.0
+  test: ^1.16.0