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+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef SRC_COMMON_ICONTEXT_H
+#define SRC_COMMON_ICONTEXT_H
+
+#include "src/common/Types.h"
+#include "src/common/utils/Log.h"
+#include "src/common/utils/Object.h"
+
+#include <atomic>
+
+struct AclContext_
+{
+ arm_compute::detail::Header header{ arm_compute::detail::ObjectType::Context, nullptr };
+
+protected:
+ AclContext_() = default;
+ ~AclContext_() = default;
+};
+
+namespace arm_compute
+{
+/**< Context interface */
+class IContext : public AclContext_
+{
+public:
+ IContext(Target target)
+ : AclContext_(), _target(target), _refcount(0)
+ {
+ }
+ /** Virtual Destructor */
+ virtual ~IContext()
+ {
+ header.type = detail::ObjectType::Invalid;
+ };
+ /** Target type accessor
+ *
+ * @return Target that the context is associated with
+ */
+ Target type() const
+ {
+ return _target;
+ }
+ /** Increment context refcount */
+ void inc_ref() const
+ {
+ ++_refcount;
+ }
+ /** Decrement context refcount */
+ void dec_ref() const
+ {
+ --_refcount;
+ }
+ /** Reference counter accessor
+ *
+ * @return The number of references pointing to this object
+ */
+ int refcount() const
+ {
+ return _refcount;
+ }
+ /** Checks if an object is valid
+ *
+ * @return True if sucessful otherwise false
+ */
+ bool is_valid() const
+ {
+ return header.type == detail::ObjectType::Context;
+ }
+
+private:
+ Target _target; /**< Target type of context */
+ mutable std::atomic<int> _refcount; /**< Reference counter */
+};
+
+/** Extract internal representation of a Context
+ *
+ * @param[in] ctx Opaque context pointer
+ *
+ * @return The internal representation as an IContext
+ */
+inline IContext *get_internal(AclContext ctx)
+{
+ return static_cast<IContext *>(ctx);
+}
+
+namespace detail
+{
+/** Check if an internal context is valid
+ *
+ * @param[in] ctx Internal context to check
+ *
+ * @return A status code
+ */
+inline StatusCode validate_internal_context(const IContext *ctx)
+{
+ if(ctx == nullptr || !ctx->is_valid())
+ {
+ ARM_COMPUTE_LOG_ERROR_ACL("Invalid context object");
+ return StatusCode::InvalidArgument;
+ }
+ return StatusCode::Success;
+}
+} // namespace detail
+} // namespace arm_compute
+#endif /* SRC_COMMON_ICONTEXT_H */