2 files changed, 116 insertions, 0 deletions

diff --git a/src/common/IContext.h b/src/common/IContext.h
index ee234795cf..31f39da06d 100644
--- a/src/common/IContext.h
+++ b/src/common/IContext.h
@@ -43,6 +43,7 @@ namespace arm_compute
 {
 // Forward declarations
 class ITensorV2;
+class IQueue;
 
 /**< Context interface */
 class IContext : public AclContext_
@@ -52,11 +53,13 @@ public:
         : 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
@@ -65,16 +68,19 @@ public:
     {
         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
@@ -83,6 +89,7 @@ public:
     {
         return _refcount;
     }
+
     /** Checks if an object is valid
      *
      * @return True if sucessful otherwise false
@@ -91,6 +98,7 @@ public:
     {
         return header.type == detail::ObjectType::Context;
     }
+
     /** Create a tensor object
      *
      * @param[in] desc     Descriptor to use
@@ -100,6 +108,14 @@ public:
      */
     virtual ITensorV2 *create_tensor(const AclTensorDescriptor &desc, bool allocate) = 0;
 
+    /** Create a queue object
+     *
+     * @param[in] options Queue options to be used
+     *
+     * @return A pointer to the created queue object
+     */
+    virtual IQueue *create_queue(const AclQueueOptions *options) = 0;
+
 private:
     Target                   _target;   /**< Target type of context */
     mutable std::atomic<int> _refcount; /**< Reference counter */
diff --git a/src/common/IQueue.h b/src/common/IQueue.h
new file mode 100644
index 0000000000..6a0cbc75da
--- /dev/null
+++ b/src/common/IQueue.h
@@ -0,0 +1,100 @@
+/*
+ * 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_ */