FM / util

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util/

/usr/local/lib64/python3.6/site-packages/torch/include/c10/util

Name	Size	Mode	Actions
accumulate.h	4205	0644	edit dl rm
AlignOf.h	4835	0644	edit dl rm
Array.h	11354	0644	edit dl rm
ArrayRef.h	9058	0644	edit dl rm
Backtrace.h	364	0644	edit dl rm
BFloat16-inl.h	9222	0644	edit dl rm
BFloat16-math.h	5217	0644	edit dl rm
BFloat16.h	2372	0644	edit dl rm
Bitset.h	3414	0644	edit dl rm
C++17.h	13329	0644	edit dl rm
complex.h	17542	0644	edit dl rm
complex_math.h	10902	0644	edit dl rm
complex_utils.h	958	0644	edit dl rm
ConstexprCrc.h	6633	0644	edit dl rm
copysign.h	866	0644	edit dl rm
DeadlockDetection.h	1920	0644	edit dl rm
Deprecated.h	3579	0644	edit dl rm
either.h	6423	0644	edit dl rm
env.h	835	0644	edit dl rm
Exception.h	24723	0644	edit dl rm
ExclusivelyOwned.h	4759	0644	edit dl rm
Flags.h	10056	0644	edit dl rm
flat_hash_map.h	61655	0644	edit dl rm
FunctionRef.h	2301	0644	edit dl rm
Half-inl.h	8674	0644	edit dl rm
Half.h	18965	0644	edit dl rm
hash.h	5084	0644	edit dl rm
IdWrapper.h	2348	0644	edit dl rm
intrusive_ptr.h	35563	0644	edit dl rm
in_place.h	350	0644	edit dl rm
irange.h	2679	0644	edit dl rm
LeftRight.h	6016	0644	edit dl rm
llvmMathExtras.h	29168	0644	edit dl rm
Logging.h	11256	0644	edit dl rm
logging_is_google_glog.h	2031	0644	edit dl rm
logging_is_not_google_glog.h	8271	0644	edit dl rm
MathConstants.h	858	0644	edit dl rm
math_compat.h	7296	0644	edit dl rm
MaybeOwned.h	6689	0644	edit dl rm
Metaprogramming.h	15288	0644	edit dl rm
numa.h	696	0644	edit dl rm
Optional.h	35592	0644	edit dl rm
order_preserving_flat_hash_map.h	65482	0644	edit dl rm
overloaded.h	709	0644	edit dl rm
python_stub.h	56	0644	edit dl rm
qint8.h	472	0644	edit dl rm
qint32.h	319	0644	edit dl rm
quint4x2.h	366	0644	edit dl rm
quint8.h	320	0644	edit dl rm
Registry.h	12242	0644	edit dl rm
reverse_iterator.h	8796	0644	edit dl rm
ScopeExit.h	1345	0644	edit dl rm
signal_handler.h	3154	0644	edit dl rm
SmallBuffer.h	1243	0644	edit dl rm
SmallVector.h	34456	0644	edit dl rm
sparse_bitset.h	26511	0644	edit dl rm
StringUtil.h	4538	0644	edit dl rm
string_utils.h	3989	0644	edit dl rm
string_view.h	20189	0644	edit dl rm
tempfile.h	6029	0644	edit dl rm
ThreadLocal.h	3883	0644	edit dl rm
ThreadLocalDebugInfo.h	2603	0644	edit dl rm
thread_name.h	148	0644	edit dl rm
Type.h	607	0644	edit dl rm
TypeCast.h	6972	0644	edit dl rm
typeid.h	18793	0644	edit dl rm
TypeIndex.h	5251	0644	edit dl rm
TypeList.h	16901	0644	edit dl rm
TypeTraits.h	5368	0644	edit dl rm
Unicode.h	295	0644	edit dl rm
UniqueVoidPtr.h	4117	0644	edit dl rm
Unroll.h	667	0644	edit dl rm
variant.h	95182	0644	edit dl rm
win32-headers.h	858	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/torch/include/c10/util/ExclusivelyOwned.h (4759B)

#pragma once

#include <c10/util/in_place.h>

namespace c10 {

// See example implementations in TensorBody.h and intrusive_ptr.h.
// Synopsis:
//
// repr_type -- type to use to store an owned T in ExclusivelyOwned.
//
// pointer_type -- pointer-esque type to return from
// ExclusivelyOwned's get() and operator*() methods.
//
// const_pointer_type -- similar to pointer_type, used for the const methods.
//
// static repr_type nullRepr() -- return a null instance of repr_type.
//
// template <class... Args>
// static repr_type createInPlace(Args&&... args) -- used by the in-place
// ExclusivelyOwned constructor.
//
// static repr_type moveToRepr(T&& x) -- move the given x into an
// instance of repr_type. used by the ExclusivelyOwned(T&&)
// constructor.
//
// static void destroyOwned(repr_type x) -- free memory for a
// known-exclusively-owned instance of x. Replaces calling repr_type's
// destructor. Being able to implement this more efficiently than
// repr_type's destructor is the main reason to use ExclusivelyOwned
// for a type.
//
// static T take(repr_type&) -- move out of the given repr_type into an owned T.
//
// static pointer_type getImpl(const repr_type&) -- return a pointer
// to the given repr_type. May take repr_type by value if that is more
// efficient.
template <typename T>
struct ExclusivelyOwnedTraits;

/// ExclusivelyOwned is a smart-pointer-like wrapper around an
/// exclusively-owned instance of some type T that normally has
/// mandatory reference counting (currently Tensor or
/// c10::intrusive_ptr). If you have an isolated piece of code that
/// knows that it has sole ownership of an object of one of these
/// types (i.e., because you created it directly or using a factory
/// function) and that object will not escape from that isolated piece
/// of code, then moving the object into an ExclusivelyOwned will
/// avoid an atomic reference count decrement at destruction time.
///
/// If you directly create the Tensor/intrusive_ptr in the first
/// place, you can use the in_place constructor of ExclusivelyOwned to
/// additionally avoid doing any stores to initialize the refcount &
/// weakcount. (Do note, however, that in this case you should
/// probably just use std::unique_ptr instead of intrusive_ptr if applicable.)
template <typename T>
class ExclusivelyOwned {
  using EOT = ExclusivelyOwnedTraits<T>;
  union {
    char dummy_;
    typename ExclusivelyOwnedTraits<T>::repr_type repr_;
  };

public:
  ExclusivelyOwned() : repr_(EOT::nullRepr()) {}

explicit ExclusivelyOwned(T&& t) : repr_(EOT::moveToRepr(std::move(t))) {}

template <class... Args>
  explicit ExclusivelyOwned(in_place_t, Args&&... args)
      : repr_(EOT::createInPlace(std::forward<Args>(args)...)) {}

ExclusivelyOwned(const ExclusivelyOwned&) = delete;

ExclusivelyOwned(ExclusivelyOwned&& rhs) noexcept
      : repr_(std::move(rhs.repr_)) {
    rhs.repr_ = EOT::nullRepr();
  }

ExclusivelyOwned& operator=(const ExclusivelyOwned&) = delete;

ExclusivelyOwned& operator=(ExclusivelyOwned&& rhs) noexcept {
    EOT::destroyOwned(repr_);
    repr_ = std::move(rhs.repr_);
    rhs.repr_ = EOT::nullRepr();
    return *this;
  }

ExclusivelyOwned& operator=(T&& rhs) noexcept {
    EOT::destroyOwned(repr_);
    repr_ = EOT::moveToRepr(std::move(rhs));
    return *this;
  }

~ExclusivelyOwned() {
    EOT::destroyOwned(repr_);
    // Don't bother to call the destructor of repr_, since we already
    // did specialized destruction for the exclusively-owned case in
    // destroyOwned!
  }

// We don't provide this because it would require us to be able to
  // differentiate an owned-but-empty T from a lack of T. This is
  // particularly problematic for Tensor, which wants to use an
  // undefined Tensor as its null state.
  explicit operator bool() const noexcept = delete;

operator T() && {
    return take();
  }

// NOTE: the equivalent operation on MaybeOwned is a moving
  // operator*. For ExclusivelyOwned, take() and operator*() may well
  // have different return types (e.g., for intrusive_ptr, take()
  // returns c10::intrusive_ptr<T> whereas operator* returns T&), so
  // they are different functions.
  T take() && {
    return EOT::take(repr_);
  }

typename EOT::const_pointer_type operator->() const {
    return get();
  }

typename EOT::const_pointer_type get() const {
    return EOT::getImpl(repr_);
  }

typename EOT::pointer_type operator->() {
    return get();
  }

typename EOT::pointer_type get() {
    return EOT::getImpl(repr_);
  }

std::remove_pointer_t<typename EOT::const_pointer_type>& operator*() const {
    return *get();
  }

std::remove_pointer_t<typename EOT::pointer_type>& operator*() {
    return *get();
  }
};

} // namespace c10

cmd: