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/*
* Copyright (c) 2021 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.
*/
#ifndef SRC_COMMON_CPUINFO_H
#define SRC_COMMON_CPUINFO_H
#include "src/common/cpuinfo/CpuIsaInfo.h"
#include "src/common/cpuinfo/CpuModel.h"
#include <string>
#include <vector>
namespace arm_compute
{
namespace cpuinfo
{
/** Aggregate class that contains CPU related information
*
* Contains information about the numbers of the CPUs, the model of each CPU,
* ISA related information and more
*
* @note We can safely assume that the ISA is common between different clusters of cores
*/
class CpuInfo
{
public:
/** Default constructor */
CpuInfo() = default;
/** Construct a new Cpu Info object
*
* @param[in] isa ISA capabilities information
* @param[in] cpus CPU models information
*/
CpuInfo(CpuIsaInfo isa, std::vector<CpuModel> cpus);
/** CpuInfo builder function from system related information
*
* @return CpuInfo A populated CpuInfo structure
*/
static CpuInfo build();
public:
bool has_neon() const
{
return _isa.neon;
}
bool has_sve() const
{
return _isa.sve;
}
bool has_sve2() const
{
return _isa.sve2;
}
bool has_fp16() const
{
return _isa.fp16;
}
bool has_bf16() const
{
return _isa.bf16;
}
bool has_dotprod() const
{
return _isa.dot;
}
bool has_immla() const
{
return _isa.immla;
}
bool has_fmmla() const
{
return _isa.fmmla;
}
CpuModel cpu_model(uint32_t cpuid) const;
CpuModel cpu_model() const;
uint32_t num_cpus() const;
private:
CpuIsaInfo _isa{};
std::vector<CpuModel> _cpus{};
};
/** Some systems have both big and small cores, this fuction computes the minimum number of cores
* that are exactly the same on the system. To maximize performance the library attempts to process
* workloads concurrently using as many threads as big cores are available on the system.
*
* @return The minumum number of common cores.
*/
uint32_t num_threads_hint();
} // namespace cpuinfo
} // namespace arm_compute
#endif /* SRC_COMMON_CPUINFO_H */
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