folly::HazptrWideCAS< T, Atom > Class Template Reference

#include <HazptrWideCAS.h>

Classes
struct	Node

Public Member Functions
	HazptrWideCAS ()
	~HazptrWideCAS ()
bool	cas (T &u, T &v)

Private Attributes
Atom< Node * >	node_

Detailed Description

template<typename T, template< typename > class Atom = std::atomic>
class folly::HazptrWideCAS< T, Atom >

Wide CAS.

Definition at line 27 of file HazptrWideCAS.h.

Constructor & Destructor Documentation

template<typename T, template< typename > class Atom = std::atomic>

folly::HazptrWideCAS< T, Atom >::HazptrWideCAS ( )

inline

Definition at line 36 of file HazptrWideCAS.h.

: node_(new Node()) {}

template<typename T, template< typename > class Atom = std::atomic>

folly::HazptrWideCAS< T, Atom >::~HazptrWideCAS ( )

inline

Definition at line 38 of file HazptrWideCAS.h.

                   {
    delete node_.load(std::memory_order_relaxed);
  }

Member Function Documentation

template<typename T, template< typename > class Atom = std::atomic>

bool folly::HazptrWideCAS< T, Atom >::cas ( T &  u, T &  v  )

inline

Definition at line 42 of file HazptrWideCAS.h.

References folly::hazptr_holder< Atom >::get_protected(), folly::HazptrWideCAS< T, Atom >::Node::Node(), folly::hazptr_holder< Atom >::reset(), folly::hazptr_obj_base< T, Atom, D >::retire(), and folly::HazptrWideCAS< T, Atom >::Node::val_.

Referenced by wide_cas_test().

                       {
    Node* n = new Node(v);
    hazptr_holder<Atom> hptr;
    Node* p;
    while (true) {
      p = hptr.get_protected(node_);
      if (p->val_ != u) {
        delete n;
        return false;
      }
      if (node_.compare_exchange_weak(
              p, n, std::memory_order_relaxed, std::memory_order_release)) {
        break;
      }
    }
    hptr.reset();
    p->retire();
    return true;
  }

Member Data Documentation

template<typename T, template< typename > class Atom = std::atomic>

Atom<Node*> folly::HazptrWideCAS< T, Atom >::node_

private

Definition at line 33 of file HazptrWideCAS.h.

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The documentation for this class was generated from the following file:

• proxygen/folly/folly/synchronization/example/HazptrWideCAS.h