From 99d40951df87790fb884ce1c42d5e2a7a0009ee0 Mon Sep 17 00:00:00 2001
From: Georgios Pinitas <georgios.pinitas@arm.com>
Date: Mon, 23 Apr 2018 16:26:46 +0100
Subject: COMPMID-1023: Import memory for OpenCL

Change-Id: I201bc00a1261814737e6b6878ecfe9904bae0cc1
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/128212
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
---
 src/runtime/CL/CLMemoryRegion.cpp | 152 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 152 insertions(+)
 create mode 100644 src/runtime/CL/CLMemoryRegion.cpp

(limited to 'src/runtime/CL/CLMemoryRegion.cpp')

diff --git a/src/runtime/CL/CLMemoryRegion.cpp b/src/runtime/CL/CLMemoryRegion.cpp
new file mode 100644
index 0000000000..15fd7f333e
--- /dev/null
+++ b/src/runtime/CL/CLMemoryRegion.cpp
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2018 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.
+ */
+#include "arm_compute/runtime/CL/CLMemoryRegion.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/runtime/CL/CLScheduler.h"
+
+namespace arm_compute
+{
+ICLMemoryRegion::ICLMemoryRegion(cl::Context ctx, size_t size)
+    : IMemoryRegion(size), _ctx(std::move(ctx)), _mapping(nullptr), _mem()
+{
+}
+
+const cl::Buffer &ICLMemoryRegion::cl_data() const
+{
+    return _mem;
+}
+
+void *ICLMemoryRegion::buffer()
+{
+    return _mapping;
+}
+
+void *ICLMemoryRegion::buffer() const
+{
+    return _mapping;
+}
+
+void **ICLMemoryRegion::handle()
+{
+    return reinterpret_cast<void **>(&_mem);
+}
+
+CLBufferMemoryRegion::CLBufferMemoryRegion(cl::Context ctx, cl_mem_flags flags, size_t size)
+    : ICLMemoryRegion(std::move(ctx), size)
+{
+    if(_size != 0)
+    {
+        _mem = cl::Buffer(_ctx, flags, _size);
+    }
+}
+
+void *CLBufferMemoryRegion::ptr()
+{
+    return nullptr;
+}
+
+void *CLBufferMemoryRegion::map(cl::CommandQueue &q, bool blocking)
+{
+    ARM_COMPUTE_ERROR_ON(_mem.get() == nullptr);
+    _mapping = q.enqueueMapBuffer(_mem, blocking ? CL_TRUE : CL_FALSE, CL_MAP_READ | CL_MAP_WRITE, 0, _size);
+    return _mapping;
+}
+
+void CLBufferMemoryRegion::unmap(cl::CommandQueue &q)
+{
+    ARM_COMPUTE_ERROR_ON(_mem.get() == nullptr);
+    q.enqueueUnmapMemObject(_mem, _mapping);
+    _mapping = nullptr;
+}
+
+ICLSVMMemoryRegion::ICLSVMMemoryRegion(cl::Context ctx, cl_mem_flags flags, size_t size, size_t alignment)
+    : ICLMemoryRegion(std::move(ctx), size), _ptr(nullptr)
+{
+    if(size != 0)
+    {
+        _ptr = clSVMAlloc(_ctx.get(), flags, size, alignment);
+        if(_ptr != nullptr)
+        {
+            _mem = cl::Buffer(_ctx, CL_MEM_READ_WRITE | CL_MEM_USE_HOST_PTR, _size, _ptr);
+        }
+    }
+}
+
+ICLSVMMemoryRegion::~ICLSVMMemoryRegion()
+{
+    if(_ptr != nullptr)
+    {
+        clFinish(CLScheduler::get().queue().get());
+        _mem = cl::Buffer();
+        clSVMFree(_ctx.get(), _ptr);
+    }
+}
+
+void *ICLSVMMemoryRegion::ptr()
+{
+    return _ptr;
+}
+
+CLCoarseSVMMemoryRegion::CLCoarseSVMMemoryRegion(cl::Context ctx, cl_mem_flags flags, size_t size, size_t alignment)
+    : ICLSVMMemoryRegion(std::move(ctx), flags, size, alignment)
+{
+}
+
+void *CLCoarseSVMMemoryRegion::map(cl::CommandQueue &q, bool blocking)
+{
+    ARM_COMPUTE_ERROR_ON(_ptr == nullptr);
+    clEnqueueSVMMap(q.get(), blocking ? CL_TRUE : CL_FALSE, CL_MAP_READ | CL_MAP_WRITE, _ptr, _size, 0, nullptr, nullptr);
+    _mapping = _ptr;
+    return _mapping;
+}
+
+void CLCoarseSVMMemoryRegion::unmap(cl::CommandQueue &q)
+{
+    ARM_COMPUTE_ERROR_ON(_ptr == nullptr);
+    clEnqueueSVMUnmap(q.get(), _ptr, 0, nullptr, nullptr);
+    _mapping = nullptr;
+}
+
+CLFineSVMMemoryRegion::CLFineSVMMemoryRegion(cl::Context ctx, cl_mem_flags flags, size_t size, size_t alignment)
+    : ICLSVMMemoryRegion(std::move(ctx), flags, size, alignment)
+{
+}
+
+void *CLFineSVMMemoryRegion::map(cl::CommandQueue &q, bool blocking)
+{
+    if(blocking)
+    {
+        clFinish(q.get());
+    }
+    _mapping = _ptr;
+    return _mapping;
+}
+
+void CLFineSVMMemoryRegion::unmap(cl::CommandQueue &q)
+{
+    ARM_COMPUTE_UNUSED(q);
+    _mapping = nullptr;
+}
+} // namespace arm_compute
\ No newline at end of file
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