Make memset/copy functions state-less

Port following functions:
- CLCopy
- CLFill
- CLPermute
- CLReshapeLayer
- CLCropResize

Resolves: COMPMID-4002

Signed-off-by: Sheri Zhang <sheri.zhang@arm.com>
Change-Id: I8392aa515aaeb5b44dab6122be6a795d08376d5f
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5003
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/runtime/CL/functions/CLCopy.h b/arm_compute/runtime/CL/functions/CLCopy.h
index f1a091d..795a183 100644
--- a/arm_compute/runtime/CL/functions/CLCopy.h
+++ b/arm_compute/runtime/CL/functions/CLCopy.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020 Arm Limited.
+ * Copyright (c) 2018-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -25,9 +25,9 @@
 #define ARM_COMPUTE_CLCOPY_H
 
 #include "arm_compute/core/Types.h"
-#include "arm_compute/runtime/CL/ICLSimpleFunction.h"
-
-#include <cstdint>
+#include "arm_compute/core/Window.h"
+#include "arm_compute/runtime/IFunction.h"
+#include <memory>
 
 namespace arm_compute
 {
@@ -35,32 +35,54 @@
 class ICLTensor;
 class ITensorInfo;
 
-class CLCopy : public ICLSimpleFunction
+/** Basic function to run @ref opencl::kernels::ClCopyKernel */
+class CLCopy : public IFunction
 {
 public:
+    /** Constructor */
+    CLCopy();
+    /** Destructor */
+    ~CLCopy();
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLCopy(const CLCopy &) = delete;
+    /** Default move constructor */
+    CLCopy(CLCopy &&);
+    /** Prevent instances of this class from being copied (As this class contains pointers) */
+    CLCopy &operator=(const CLCopy &) = delete;
+    /** Default move assignment operator */
+    CLCopy &operator=(CLCopy &&);
     /** Initialise the function's source and destination.
      *
-     * @param[in]  input  Source tensor. Data types supported: All.
-     * @param[out] output Output tensor. Data types supported: Same as @p input.
-     *
+     * @param[in]  input      Source tensor. Data types supported: All.
+     * @param[out] output     Output tensor. Data types supported: Same as @p input.
+     * @param[in]  dst_window (Optional) Window to be used in case only copying into part of a tensor. Default is nullptr.
      */
-    void configure(ICLTensor *input, ICLTensor *output);
+    void configure(ICLTensor *input, ICLTensor *output, Window *dst_window = nullptr);
     /** Initialise the function's source and destination.
      *
      * @param[in]  compile_context The compile context to be used.
      * @param[in]  input           Source tensor. Data types supported: All.
      * @param[out] output          Output tensor. Data types supported: Same as @p input.
+     * @param[in]  dst_window      (Optional) Window to be used in case only copying into part of a tensor. Default is nullptr.
      *
      */
-    void configure(const CLCompileContext &compile_context, ICLTensor *input, ICLTensor *output);
+    void configure(const CLCompileContext &compile_context, ICLTensor *input, ICLTensor *output, Window *dst_window = nullptr);
     /** Static function to check if given info will lead to a valid configuration of @ref CLCopy
      *
-     * @param[in] input  Source tensor. Data types supported: All.
-     * @param[in] output Output tensor. Data types supported: Same as @p input.
+     * @param[in] input      Source tensor. Data types supported: All.
+     * @param[in] output     Output tensor. Data types supported: Same as @p input.
+     * @param[in] dst_window (Optional) Window to be used in case only copying into part of a tensor. Default is nullptr.
      *
      * @return a status
      */
-    static Status validate(const ITensorInfo *input, const ITensorInfo *output);
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output, Window *dst_window = nullptr);
+
+    // Inherited methods overridden:
+    void run() override;
+
+private:
+    struct Impl;
+    std::unique_ptr<Impl> _impl;
 };
 } // namespace arm_compute
 #endif /*ARM_COMPUTE_CLCOPY_H */