Compute Library
 21.02
CLBufferAllocator.cpp
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2  * Copyright (c) 2017-2020 Arm Limited.
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25 
28 #include "arm_compute/core/Error.h"
31 
32 #include <cstddef>
33 
34 namespace arm_compute
35 {
37  : _ctx(ctx)
38 {
39 }
40 
41 void *CLBufferAllocator::allocate(size_t size, size_t alignment)
42 {
43  ARM_COMPUTE_UNUSED(alignment);
44  cl_mem buf;
45  if(_ctx == nullptr)
46  {
47  buf = clCreateBuffer(CLScheduler::get().context().get(), CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, size, nullptr, nullptr);
48  }
49  else
50  {
51  buf = clCreateBuffer(_ctx->context().get(), CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, size, nullptr, nullptr);
52  }
53  return static_cast<void *>(buf);
54 }
55 
56 void CLBufferAllocator::free(void *ptr)
57 {
58  ARM_COMPUTE_ERROR_ON(ptr == nullptr);
59  clReleaseMemObject(static_cast<cl_mem>(ptr));
60 }
61 
62 std::unique_ptr<IMemoryRegion> CLBufferAllocator::make_region(size_t size, size_t alignment)
63 {
64  ARM_COMPUTE_UNUSED(alignment);
65  return std::make_unique<CLBufferMemoryRegion>(_ctx, CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, size);
66 }
67 } // namespace arm_compute
cl::Context context()
OpenCL context accessor.
static CLScheduler & get()
Access the scheduler singleton.
void free(void *ptr) override
Interface to be implemented by the child class to free the allocated tensor.
#define ARM_COMPUTE_ERROR_ON(cond)
If the condition is true then an error message is printed and an exception thrown.
Definition: Error.h:466
CLBufferAllocator(CLCoreRuntimeContext *ctx=nullptr)
Default constructor.
std::unique_ptr< IMemoryRegion > make_region(size_t size, size_t alignment) override
Create self-managed memory region.
Copyright (c) 2017-2021 Arm Limited.
Interface to enqueue OpenCL kernels and get/set the OpenCL CommandQueue and ICLTuner.
void * allocate(size_t size, size_t alignment) override
Interface to be implemented by the child class to allocate bytes.
#define ARM_COMPUTE_UNUSED(...)
To avoid unused variables warnings.
Definition: Error.h:152
Core runtime context for OpenCL.
cl_mem clCreateBuffer(cl_context context, cl_mem_flags flags, size_t size, void *host_ptr, cl_int *errcode_ret)
Definition: OpenCL.cpp:723
Wrapper to configure the Khronos OpenCL C++ header.
cl_int clReleaseMemObject(cl_mem memobj)
Definition: OpenCL.cpp:391