src/runtime/GLES_COMPUTE/GCTensorAllocator.cpp

   1 /*
   2  * Copyright (c) 2017-2018 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
  25 #include "arm_compute/runtime/GLES_COMPUTE/GCTensorAllocator.h"
  26
  27 #include "arm_compute/core/Error.h"
  28 #include "arm_compute/core/TensorInfo.h"
  29 #include "arm_compute/runtime/GLES_COMPUTE/GCScheduler.h"
  30 #include "support/ToolchainSupport.h"
  31
  32 using namespace arm_compute;
  33
  34 GCTensorAllocator::GCTensorAllocator(GCTensor *owner)
  35     : _associated_memory_group(nullptr), _gl_buffer(), _mapping(nullptr), _owner(owner)
  36 {
  37 }
  38
  39 GCTensorAllocator::~GCTensorAllocator()
  40 {
  41     _gl_buffer = support::cpp14::make_unique<GLBufferWrapper>();
  42 }
  43
  44 uint8_t *GCTensorAllocator::data()
  45 {
  46     return _mapping;
  47 }
  48
  49 void GCTensorAllocator::allocate()
  50 {
  51     if(_associated_memory_group == nullptr)
  52     {
  53         _gl_buffer = support::cpp14::make_unique<GLBufferWrapper>();
  54         ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
  55         ARM_COMPUTE_GL_CHECK(glBufferData(GL_SHADER_STORAGE_BUFFER, static_cast<GLsizeiptr>(info().total_size()), nullptr, GL_STATIC_DRAW));
  56         ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
  57     }
  58     else
  59     {
  60         _associated_memory_group->finalize_memory(_owner, reinterpret_cast<void **>(&_gl_buffer), info().total_size());
  61     }
  62     info().set_is_resizable(false);
  63 }
  64
  65 void GCTensorAllocator::free()
  66 {
  67     if(_associated_memory_group == nullptr)
  68     {
  69         _gl_buffer.reset();
  70         info().set_is_resizable(true);
  71     }
  72 }
  73
  74 void GCTensorAllocator::set_associated_memory_group(GCMemoryGroup *associated_memory_group)
  75 {
  76     ARM_COMPUTE_ERROR_ON(associated_memory_group == nullptr);
  77     ARM_COMPUTE_ERROR_ON(_associated_memory_group != nullptr);
  78     ARM_COMPUTE_ERROR_ON(_gl_buffer.get() != nullptr);
  79     _associated_memory_group = associated_memory_group;
  80 }
  81
  82 uint8_t *GCTensorAllocator::lock()
  83 {
  84     return map(true);
  85 }
  86
  87 void GCTensorAllocator::unlock()
  88 {
  89     unmap();
  90 }
  91
  92 GLuint GCTensorAllocator::get_gl_ssbo_name() const
  93 {
  94     return _gl_buffer->_ssbo_name;
  95 }
  96
  97 uint8_t *GCTensorAllocator::map(bool blocking)
  98 {
  99     ARM_COMPUTE_ERROR_ON(_mapping != nullptr);
 100     ARM_COMPUTE_UNUSED(blocking);
 101
 102     ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
 103     void *p  = ARM_COMPUTE_GL_CHECK(glMapBufferRange(GL_SHADER_STORAGE_BUFFER, 0, static_cast<GLsizeiptr>(info().total_size()), GL_MAP_READ_BIT | GL_MAP_WRITE_BIT));
 104     _mapping = reinterpret_cast<uint8_t *>(p);
 105
 106     return _mapping;
 107 }
 108
 109 void GCTensorAllocator::unmap()
 110 {
 111     ARM_COMPUTE_ERROR_ON(_mapping == nullptr);
 112
 113     ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, _gl_buffer->_ssbo_name));
 114     ARM_COMPUTE_GL_CHECK(glUnmapBuffer(GL_SHADER_STORAGE_BUFFER));
 115     ARM_COMPUTE_GL_CHECK(glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0));
 116     _mapping = nullptr;
 117 }