1 files changed, 36 insertions, 0 deletions
diff --git a/base/include/base/AsyncResult.h b/base/include/base/AsyncResult.h
new file mode 100644
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--- /dev/null
+++ b/base/include/base/AsyncResult.h
@@ -0,0 +1,36 @@
+// Copyright 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+class AsyncResult {
+   public:
+    // Describes the status of functions that may asynchronously schedule
+    // callbacks for execution.
+    enum ResultValue {
+        OK_AND_CALLBACK_SCHEDULED,
+        OK_AND_CALLBACK_NOT_SCHEDULED,
+        OK_AND_CALLBACK_FIRED,
+        FAIL_AND_CALLBACK_NOT_SCHEDULED,
+    };
+
+    AsyncResult() = default;
+    constexpr AsyncResult(ResultValue val) : value(val) {}
+    constexpr bool Succeeded() { return value != ResultValue::FAIL_AND_CALLBACK_NOT_SCHEDULED; }
+    constexpr bool CallbackScheduledOrFired() {
+        return value == OK_AND_CALLBACK_SCHEDULED || value == OK_AND_CALLBACK_FIRED;
+    }
+  private:
+    ResultValue value;
+
+};