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/*
* Copyright (c) 2016-2019 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/CLScheduler.h"
#include "arm_compute/runtime/CL/CLHelpers.h"
#include "arm_compute/core/CL/ICLKernel.h"
#include "arm_compute/runtime/CL/CLTuner.h"
#include "arm_compute/runtime/CL/tuners/Tuners.h"
using namespace arm_compute;
std::once_flag CLScheduler::_initialize_symbols;
CLScheduler::CLScheduler()
: _context(), _queue(), _target(GPUTarget::MIDGARD), _is_initialised(false), _cl_tuner(nullptr), _cl_default_static_tuner(nullptr)
{
}
CLScheduler &CLScheduler::get()
{
std::call_once(_initialize_symbols, opencl_is_available);
static CLScheduler scheduler;
return scheduler;
}
void CLScheduler::default_init_with_context(cl::Device &device, cl::Context &ctx, ICLTuner *cl_tuner)
{
if(!_is_initialised)
{
cl::CommandQueue queue = cl::CommandQueue(ctx, device);
CLKernelLibrary::get().init("./cl_kernels/", ctx, device);
init(ctx, queue, device, cl_tuner);
_cl_default_static_tuner = tuners::TunerFactory::create_tuner(_target);
_cl_tuner = (cl_tuner == nullptr) ? _cl_default_static_tuner.get() : cl_tuner;
}
}
void CLScheduler::default_init(ICLTuner *cl_tuner)
{
if(!_is_initialised)
{
cl::Context ctx;
cl::Device dev;
cl_int err;
std::tie(ctx, dev, err) = create_opencl_context_and_device();
ARM_COMPUTE_ERROR_ON_MSG(err != CL_SUCCESS, "Failed to create OpenCL context");
cl::CommandQueue queue = cl::CommandQueue(ctx, dev);
CLKernelLibrary::get().init("./cl_kernels/", ctx, dev);
init(ctx, queue, dev, cl_tuner);
// Create a default static tuner and set if none was provided
_cl_default_static_tuner = tuners::TunerFactory::create_tuner(_target);
}
// Set CL tuner
_cl_tuner = (cl_tuner == nullptr) ? _cl_default_static_tuner.get() : cl_tuner;
}
void CLScheduler::set_context(cl::Context context)
{
_context = std::move(context);
CLKernelLibrary::get().set_context(_context);
}
void CLScheduler::init(cl::Context context, cl::CommandQueue queue, const cl::Device &device, ICLTuner *cl_tuner)
{
set_context(std::move(context));
_queue = std::move(queue);
_target = get_target_from_device(device);
_is_initialised = true;
_cl_tuner = cl_tuner;
}
void CLScheduler::enqueue(ICLKernel &kernel, bool flush)
{
ARM_COMPUTE_ERROR_ON_MSG(!_is_initialised,
"The CLScheduler is not initialised yet! Please call the CLScheduler::get().default_init(), \
or CLScheduler::get()::init() and CLKernelLibrary::get()::init() function before running functions!");
// Tune the kernel if the CLTuner has been provided
if(_cl_tuner != nullptr)
{
// Tune the OpenCL kernel
_cl_tuner->tune_kernel_dynamic(kernel);
}
// Run kernel
kernel.run(kernel.window(), _queue);
if(flush)
{
_queue.flush();
}
}
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