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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_IQUEUE_H_
+#define SRC_COMMON_IQUEUE_H_
+
+#include "src/common/IContext.h"
+
+struct AclQueue_
+{
+ arm_compute::detail::Header header{arm_compute::detail::ObjectType::Queue, nullptr};
+
+protected:
+ AclQueue_() = default;
+ ~AclQueue_() = default;
+};
+
+namespace arm_compute
+{
+/** Base class specifying the queue interface */
+class IQueue : public AclQueue_
+{
+public:
+ /** Explict Operator Constructor
+ *
+ * @param[in] ctx Context to be used by the operator
+ */
+ explicit IQueue(IContext *ctx)
+ {
+ this->header.ctx = ctx;
+ this->header.ctx->inc_ref();
+ }
+ /** Destructor */
+ virtual ~IQueue()
+ {
+ this->header.ctx->dec_ref();
+ this->header.type = detail::ObjectType::Invalid;
+ };
+ /** Checks if a queue is valid
+ *
+ * @return True if successful otherwise false
+ */
+ bool is_valid() const
+ {
+ return this->header.type == detail::ObjectType::Queue;
+ };
+ virtual StatusCode finish() = 0;
+};
+
+/** Extract internal representation of a Queue
+ *
+ * @param[in] queue Opaque queue pointer
+ *
+ * @return The internal representation as an IQueue
+ */
+inline IQueue *get_internal(AclQueue queue)
+{
+ return static_cast<IQueue *>(queue);
+}
+
+namespace detail
+{
+/** Check if an internal queue is valid
+ *
+ * @param[in] queue Internal queue to check
+ *
+ * @return A status code
+ */
+inline StatusCode validate_internal_queue(const IQueue *queue)
+{
+ if (queue == nullptr || !queue->is_valid())
+ {
+ ARM_COMPUTE_LOG_ERROR_ACL("[IQueue]: Invalid queue object");
+ return StatusCode::InvalidArgument;
+ }
+ return StatusCode::Success;
+}
+} // namespace detail
+} // namespace arm_compute
+#endif /* SRC_COMMON_IQUEUE_H_ */