1 /*
2 * Copyright (c) 2016, 2017 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "arm_compute/runtime/CL/CLLutAllocator.h"
25
26 #include "arm_compute/core/Error.h"
27 #include "arm_compute/runtime/CL/CLScheduler.h"
28
29 using namespace arm_compute;
30
CLLutAllocator()31 CLLutAllocator::CLLutAllocator()
32 : _buffer(), _mapping(nullptr)
33 {
34 }
35
data()36 uint8_t *CLLutAllocator::data()
37 {
38 return _mapping;
39 }
40
cl_data() const41 const cl::Buffer &CLLutAllocator::cl_data() const
42 {
43 return _buffer;
44 }
45
map(cl::CommandQueue & q,bool blocking)46 uint8_t *CLLutAllocator::map(cl::CommandQueue &q, bool blocking)
47 {
48 ARM_COMPUTE_ERROR_ON(_buffer.get() == nullptr);
49 return static_cast<uint8_t *>(q.enqueueMapBuffer(_buffer, blocking ? CL_TRUE : CL_FALSE, CL_MAP_READ | CL_MAP_WRITE, 0, size()));
50 }
51
unmap(cl::CommandQueue & q,uint8_t * mapping)52 void CLLutAllocator::unmap(cl::CommandQueue &q, uint8_t *mapping)
53 {
54 ARM_COMPUTE_ERROR_ON(_buffer.get() == nullptr);
55 q.enqueueUnmapMemObject(_buffer, mapping);
56 }
57
allocate()58 void CLLutAllocator::allocate()
59 {
60 _buffer = cl::Buffer(CLScheduler::get().context(), CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, size());
61 }
62
lock()63 uint8_t *CLLutAllocator::lock()
64 {
65 ARM_COMPUTE_ERROR_ON(_mapping != nullptr);
66 cl::CommandQueue q = CLScheduler::get().queue();
67 _mapping = map(q, true);
68 return _mapping;
69 }
70
unlock()71 void CLLutAllocator::unlock()
72 {
73 ARM_COMPUTE_ERROR_ON(_mapping == nullptr);
74 cl::CommandQueue q = CLScheduler::get().queue();
75 unmap(q, _mapping);
76 _mapping = nullptr;
77 }
78