107 lines
2.2 KiB
C++
107 lines
2.2 KiB
C++
/*
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* Copyright 2011-2017 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "device/device.h"
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#include "util/util_map.h"
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#include "util/util_vector.h"
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#include "util/util_string.h"
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#include "clew.h"
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CCL_NAMESPACE_BEGIN
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class OpenCLDeviceBase;
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class MemoryManager {
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public:
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static const int NUM_DEVICE_BUFFERS = 8;
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struct BufferDescriptor {
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uint device_buffer;
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cl_ulong offset;
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};
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private:
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struct DeviceBuffer;
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struct Allocation {
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device_memory *mem;
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DeviceBuffer *device_buffer;
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size_t size; /* Size of actual allocation, may be larger than requested. */
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BufferDescriptor desc;
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bool needs_copy_to_device;
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Allocation() : mem(NULL), device_buffer(NULL), size(0), needs_copy_to_device(false)
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{
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}
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};
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struct DeviceBuffer {
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device_only_memory<uchar> *buffer;
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vector<Allocation*> allocations;
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size_t size; /* Size of all allocations. */
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DeviceBuffer()
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: buffer(NULL), size(0)
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{
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}
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~DeviceBuffer()
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{
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delete buffer;
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buffer = NULL;
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}
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void add_allocation(Allocation& allocation);
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void update_device_memory(OpenCLDeviceBase *device);
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void free(OpenCLDeviceBase *device);
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};
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OpenCLDeviceBase *device;
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DeviceBuffer device_buffers[NUM_DEVICE_BUFFERS];
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typedef unordered_map<string, Allocation> AllocationsMap;
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AllocationsMap allocations;
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bool need_update;
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DeviceBuffer* smallest_device_buffer();
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public:
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MemoryManager(OpenCLDeviceBase *device);
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void free(); /* Free all memory. */
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void alloc(const char *name, device_memory& mem);
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bool free(device_memory& mem);
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BufferDescriptor get_descriptor(string name);
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void update_device_memory();
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void set_kernel_arg_buffers(cl_kernel kernel, cl_uint *narg);
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};
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CCL_NAMESPACE_END
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