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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.
*/
#include "src/cpu/CpuContext.h"
#include "arm_compute/core/CPP/CPPTypes.h"
#include "src/runtime/CPUUtils.h"
#include <cstdlib>
namespace arm_compute
{
namespace cpu
{
namespace
{
void *default_allocate(void *user_data, size_t size)
{
ARM_COMPUTE_UNUSED(user_data);
return ::operator new(size);
}
void default_free(void *user_data, void *ptr)
{
ARM_COMPUTE_UNUSED(user_data);
::operator delete(ptr);
}
void *default_aligned_allocate(void *user_data, size_t size, size_t alignment)
{
ARM_COMPUTE_UNUSED(user_data);
void *ptr = nullptr;
#if defined(BARE_METAL) || defined(__APPLE__)
size_t rem = size % alignment;
size_t real_size = (rem) ? (size + alignment - rem) : size;
ptr = aligned_alloc(alignment, real_size);
#else /* defined(BARE_METAL) || defined(__APPLE__) */
posix_memalign(&ptr, alignment, size);
#endif /* defined(BARE_METAL) || defined(__APPLE__) */
return ptr;
}
void default_aligned_free(void *user_data, void *ptr)
{
ARM_COMPUTE_UNUSED(user_data);
free(ptr);
}
static AclAllocator default_allocator = { &default_allocate,
&default_free,
&default_aligned_allocate,
&default_aligned_free,
nullptr
};
AllocatorWrapper populate_allocator(AclAllocator *external_allocator)
{
bool is_valid = (external_allocator != nullptr);
if(is_valid)
{
is_valid = is_valid && (external_allocator->alloc != nullptr);
is_valid = is_valid && (external_allocator->free != nullptr);
is_valid = is_valid && (external_allocator->aligned_alloc != nullptr);
is_valid = is_valid && (external_allocator->aligned_free != nullptr);
}
return is_valid ? AllocatorWrapper(*external_allocator) : AllocatorWrapper(default_allocator);
}
CpuCapabilities populate_capabilities_legacy(const CPUInfo &cpu_info)
{
CpuCapabilities caps;
// Extract SIMD extension
caps.neon = true;
#ifdef SVE2
caps.sve2 = true;
#endif /* SVE2 */
// Extract data-type support
caps.fp16 = cpu_info.has_fp16();
#ifdef V8P6_BF
caps.bf16 = true;
#endif /* V8P6_BF */
// Extract ISA extensions
caps.dot = cpu_info.has_dotprod();
#ifdef MMLA_FP32
caps.mmla_fp = true;
#endif /* MMLA_FP32 */
#ifdef MMLA_INT8
caps.mmla_int8 = true;
#endif /* MMLA_INT8 */
return caps;
}
CpuCapabilities populate_capabilities_flags(AclTargetCapabilities external_caps)
{
CpuCapabilities caps;
// Extract SIMD extension
caps.neon = external_caps & AclCpuCapabilitiesNeon;
caps.sve = external_caps & AclCpuCapabilitiesSve;
caps.sve2 = external_caps & AclCpuCapabilitiesSve2;
// Extract data-type support
caps.fp16 = external_caps & AclCpuCapabilitiesFp16;
caps.bf16 = external_caps & AclCpuCapabilitiesBf16;
// Extract ISA extensions
caps.dot = external_caps & AclCpuCapabilitiesDot;
caps.mmla_fp = external_caps & AclCpuCapabilitiesMmlaFp;
caps.mmla_int8 = external_caps & AclCpuCapabilitiesMmlaInt8;
return caps;
}
CpuCapabilities populate_capabilities(AclTargetCapabilities external_caps,
int32_t max_threads)
{
// Extract legacy structure
CPUInfo cpu_info;
arm_compute::utils::cpu::get_cpu_configuration(cpu_info);
CpuCapabilities caps;
if(external_caps != AclCpuCapabilitiesAuto)
{
caps = populate_capabilities_flags(external_caps);
}
else
{
caps = populate_capabilities_legacy(cpu_info);
}
// Set max number of threads
#if defined(BARE_METAL)
ARM_COMPUTE_UNUSED(max_threads);
caps.max_threads = 1;
#else /* defined(BARE_METAL) */
caps.max_threads = (max_threads > 0) ? max_threads : std::thread::hardware_concurrency();
#endif /* defined(BARE_METAL) */
return caps;
}
} // namespace
CpuContext::CpuContext(const AclContextOptions *options)
: IContext(Target::Cpu),
_allocator(default_allocator),
_caps(populate_capabilities(AclCpuCapabilitiesAuto, -1))
{
if(options != nullptr)
{
_allocator = populate_allocator(options->allocator);
_caps = populate_capabilities(options->capabilities, options->max_compute_units);
}
}
const CpuCapabilities &CpuContext::capabilities() const
{
return _caps;
}
AllocatorWrapper &CpuContext::allocator()
{
return _allocator;
}
} // namespace cpu
} // namespace arm_compute
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