SDK: Introduce fairmq error category

fairmq/sdk/Error.h

@@ -0,0 +1,62 @@
+/********************************************************************************
+ *    Copyright (C) 2019 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    *
+ *                                                                              *
+ *              This software is distributed under the terms of the             *
+ *              GNU Lesser General Public Licence (LGPL) version 3,             *
+ *                  copied verbatim in the file "LICENSE"                       *
+ ********************************************************************************/
+
+#ifndef FAIR_MQ_SDK_ERROR_H
+#define FAIR_MQ_SDK_ERROR_H
+
+#include <fairmq/Tools.h>
+#include <stdexcept>
+#include <system_error>
+
+namespace fair {
+namespace mq {
+namespace sdk {
+
+struct RuntimeError : ::std::runtime_error
+{
+    template<typename... T>
+    explicit RuntimeError(T&&... t)
+        : ::std::runtime_error::runtime_error(tools::ToString(std::forward<T>(t)...))
+    {}
+};
+
+struct MixedStateError : RuntimeError
+{
+    using RuntimeError::RuntimeError;
+};
+
+} /* namespace sdk */
+
+enum class ErrorCode
+{
+    OperationInProgress = 10,
+    OperationTimeout,
+    OperationCanceled,
+    DeviceChangeStateFailed
+};
+
+std::error_code MakeErrorCode(ErrorCode);
+
+struct ErrorCategory : std::error_category
+{
+  const char* name() const noexcept override;
+  std::string message(int ev) const override;
+};
+
+} /* namespace mq */
+} /* namespace fair */
+
+namespace std {
+
+template<>
+struct is_error_code_enum<fair::mq::ErrorCode> : true_type
+{};
+
+}   // namespace std
+
+#endif /* FAIR_MQ_SDK_ERROR_H */