1 files changed, 51 insertions, 0 deletions
diff --git a/pw_thread_embos/public/pw_thread_embos/id_native.h b/pw_thread_embos/public/pw_thread_embos/id_native.h
new file mode 100644
index 000000000..4d30539d6
--- /dev/null
+++ b/pw_thread_embos/public/pw_thread_embos/id_native.h
@@ -0,0 +1,51 @@
+// Copyright 2021 The Pigweed Authors
+//
+// 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
+//
+//     https://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
+
+#include "RTOS.h"
+
+namespace pw::thread::backend {
+
+// Instead of using a pw::thread::embos specific identifier, the ThreadX
+// thread pointer is used as this means pw::this_thread::id works correctly on
+// threads started with the native ThreadX APIs as well as those started
+// using the pw::thread APIs.
+class NativeId {
+ public:
+  constexpr NativeId(OS_TASK* task_ptr = nullptr) : task_ptr_(task_ptr) {}
+
+  constexpr bool operator==(NativeId other) const {
+    return task_ptr_ == other.task_ptr_;
+  }
+  constexpr bool operator!=(NativeId other) const {
+    return task_ptr_ != other.task_ptr_;
+  }
+  constexpr bool operator<(NativeId other) const {
+    return task_ptr_ < other.task_ptr_;
+  }
+  constexpr bool operator<=(NativeId other) const {
+    return task_ptr_ <= other.task_ptr_;
+  }
+  constexpr bool operator>(NativeId other) const {
+    return task_ptr_ > other.task_ptr_;
+  }
+  constexpr bool operator>=(NativeId other) const {
+    return task_ptr_ >= other.task_ptr_;
+  }
+
+ private:
+  OS_TASK* task_ptr_;
+};
+
+}  // namespace pw::thread::backend