FM / util

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/

/usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util

Name	Size	Mode	Actions
algorithm.h	1229	0644	edit dl rm
aligned_storage.h	4302	0644	edit dl rm
align_util.h	2636	0644	edit dl rm
async_generator.h	64088	0644	edit dl rm
async_util.h	9633	0644	edit dl rm
atomic_shared_ptr.h	3640	0644	edit dl rm
base64.h	1098	0644	edit dl rm
basic_decimal.h	20334	0644	edit dl rm
benchmark_util.h	4584	0644	edit dl rm
bitmap.h	17463	0644	edit dl rm
bitmap_builders.h	1563	0644	edit dl rm
bitmap_generate.h	3563	0644	edit dl rm
bitmap_ops.h	9084	0644	edit dl rm
bitmap_reader.h	8347	0644	edit dl rm
bitmap_visit.h	3460	0644	edit dl rm
bitmap_writer.h	9360	0644	edit dl rm
bitset_stack.h	2789	0644	edit dl rm
bit_block_counter.h	19141	0644	edit dl rm
bit_run_reader.h	16599	0644	edit dl rm
bit_stream_utils.h	16986	0644	edit dl rm
bit_util.h	11568	0644	edit dl rm
bpacking.h	1175	0644	edit dl rm
bpacking64_default.h	195934	0644	edit dl rm
bpacking_avx2.h	1009	0644	edit dl rm
bpacking_avx512.h	1011	0644	edit dl rm
bpacking_default.h	103232	0644	edit dl rm
bpacking_neon.h	1009	0644	edit dl rm
bpacking_simd128_generated.h	98529	0644	edit dl rm
bpacking_simd256_generated.h	77475	0644	edit dl rm
bpacking_simd512_generated.h	67081	0644	edit dl rm
byte_stream_split.h	28784	0644	edit dl rm
cancel.h	2911	0644	edit dl rm
checked_cast.h	2076	0644	edit dl rm
compare.h	1981	0644	edit dl rm
compression.h	7367	0644	edit dl rm
concurrent_map.h	1775	0644	edit dl rm
config.h	1659	0644	edit dl rm
converter.h	14657	0644	edit dl rm
counting_semaphore.h	2251	0644	edit dl rm
cpu_info.h	4724	0644	edit dl rm
decimal.h	11687	0644	edit dl rm
delimiting.h	7335	0644	edit dl rm
dispatch.h	3235	0644	edit dl rm
double_conversion.h	1195	0644	edit dl rm
endian.h	8071	0644	edit dl rm
formatting.h	20612	0644	edit dl rm
functional.h	5612	0644	edit dl rm
future.h	36168	0644	edit dl rm
future_iterator.h	2517	0644	edit dl rm
hashing.h	30633	0644	edit dl rm
hash_util.h	1914	0644	edit dl rm
int_util.h	4284	0644	edit dl rm
io_util.h	10326	0644	edit dl rm
iterator.h	18123	0644	edit dl rm
key_value_metadata.h	3579	0644	edit dl rm
launder.h	1051	0644	edit dl rm
logging.h	9338	0644	edit dl rm
macros.h	7349	0644	edit dl rm
make_unique.h	1475	0644	edit dl rm
map.h	2476	0644	edit dl rm
math_constants.h	1106	0644	edit dl rm
memory.h	1566	0644	edit dl rm
mutex.h	1833	0644	edit dl rm
optional.h	1174	0644	edit dl rm
parallel.h	3616	0644	edit dl rm
pcg_random.h	1146	0644	edit dl rm
print.h	1725	0644	edit dl rm
queue.h	1017	0644	edit dl rm
range.h	4834	0644	edit dl rm
rle_encoding.h	31029	0644	edit dl rm
simd.h	1333	0644	edit dl rm
small_vector.h	14660	0644	edit dl rm
sort.h	2466	0644	edit dl rm
spaced.h	3567	0644	edit dl rm
stopwatch.h	1401	0644	edit dl rm
string.h	2570	0644	edit dl rm
string_builder.h	2446	0644	edit dl rm
string_view.h	1269	0644	edit dl rm
task_group.h	4362	0644	edit dl rm
tdigest.h	3052	0644	edit dl rm
test_common.h	2837	0644	edit dl rm
thread_pool.h	15338	0644	edit dl rm
time.h	2988	0644	edit dl rm
trie.h	7157	0644	edit dl rm
type_fwd.h	1409	0644	edit dl rm
type_traits.h	2894	0644	edit dl rm
ubsan.h	2777	0644	edit dl rm
unreachable.h	926	0644	edit dl rm
uri.h	3297	0644	edit dl rm
utf8.h	18780	0644	edit dl rm
value_parsing.h	27056	0644	edit dl rm
variant.h	13728	0644	edit dl rm
vector.h	5665	0644	edit dl rm
visibility.h	1463	0644	edit dl rm
windows_compatibility.h	1260	0644	edit dl rm
windows_fixup.h	1379	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/pyarrow/include/arrow/util/cpu_info.h (4724B)

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

// From Apache Impala (incubating) as of 2016-01-29. Pared down to a minimal
// set of functions needed for Apache Arrow / Apache parquet-cpp

#pragma once

#include <cstdint>
#include <string>

#include "arrow/util/visibility.h"

namespace arrow {
namespace internal {

/// CpuInfo is an interface to query for cpu information at runtime.  The caller can
/// ask for the sizes of the caches and what hardware features are supported.
/// On Linux, this information is pulled from a couple of sys files (/proc/cpuinfo and
/// /sys/devices)
class ARROW_EXPORT CpuInfo {
 public:
  static constexpr int64_t SSSE3 = (1 << 1);
  static constexpr int64_t SSE4_1 = (1 << 2);
  static constexpr int64_t SSE4_2 = (1 << 3);
  static constexpr int64_t POPCNT = (1 << 4);
  static constexpr int64_t ASIMD = (1 << 5);
  static constexpr int64_t AVX = (1 << 6);
  static constexpr int64_t AVX2 = (1 << 7);
  static constexpr int64_t AVX512F = (1 << 8);
  static constexpr int64_t AVX512CD = (1 << 9);
  static constexpr int64_t AVX512VL = (1 << 10);
  static constexpr int64_t AVX512DQ = (1 << 11);
  static constexpr int64_t AVX512BW = (1 << 12);
  static constexpr int64_t BMI1 = (1 << 13);
  static constexpr int64_t BMI2 = (1 << 14);

/// Typical AVX512 subsets consists of AVX512F,AVX512BW,AVX512VL,AVX512CD,AVX512DQ
  static constexpr int64_t AVX512 = AVX512F | AVX512CD | AVX512VL | AVX512DQ | AVX512BW;

/// Cache enums for L1 (data), L2 and L3
  enum CacheLevel {
    L1_CACHE = 0,
    L2_CACHE = 1,
    L3_CACHE = 2,
  };

enum class Vendor : int { Unknown = 0, Intel, AMD };

static CpuInfo* GetInstance();

/// Determine if the CPU meets the minimum CPU requirements and if not, issue an error
  /// and terminate.
  void VerifyCpuRequirements();

/// Returns all the flags for this cpu
  int64_t hardware_flags();

/// \brief Returns whether or not the given feature is enabled.
  ///
  /// IsSupported() is true iff IsDetected() is also true and the feature
  /// wasn't disabled by the user (for example by setting the ARROW_USER_SIMD_LEVEL
  /// environment variable).
  bool IsSupported(int64_t flags) const { return (hardware_flags_ & flags) == flags; }

/// Returns whether or not the given feature is available on the CPU.
  bool IsDetected(int64_t flags) const {
    return (original_hardware_flags_ & flags) == flags;
  }

/// \brief The processor supports SSE4.2 and the Arrow libraries are built
  /// with support for it
  bool CanUseSSE4_2() const;

/// Toggle a hardware feature on and off.  It is not valid to turn on a feature
  /// that the underlying hardware cannot support. This is useful for testing.
  void EnableFeature(int64_t flag, bool enable);

/// Returns the size of the cache in KB at this cache level
  int64_t CacheSize(CacheLevel level);

/// Returns the number of cpu cycles per millisecond
  int64_t cycles_per_ms();

/// Returns the number of cores (including hyper-threaded) on this machine.
  int num_cores();

/// Returns the model name of the cpu (e.g. Intel i7-2600)
  std::string model_name();

/// Returns the vendor of the cpu.
  Vendor vendor() const { return vendor_; }

bool HasEfficientBmi2() const {
    // BMI2 (pext, pdep) is only efficient on Intel X86 processors.
    return vendor() == Vendor::Intel && IsSupported(BMI2);
  }

private:
  CpuInfo();

enum UserSimdLevel {
    USER_SIMD_NONE = 0,
    USER_SIMD_SSE4_2,
    USER_SIMD_AVX,
    USER_SIMD_AVX2,
    USER_SIMD_AVX512,
    USER_SIMD_MAX,
  };

void Init();

/// Inits CPU cache size variables with default values
  void SetDefaultCacheSize();

/// Parse the SIMD level by ARROW_USER_SIMD_LEVEL env
  void ParseUserSimdLevel();

int64_t hardware_flags_;
  int64_t original_hardware_flags_;
  int64_t cache_sizes_[L3_CACHE + 1];
  int64_t cycles_per_ms_;
  int num_cores_;
  std::string model_name_;
  Vendor vendor_;
};

}  // namespace internal
}  // namespace arrow

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