SkNVRefCnt< Derived > Class Template Reference

#include <SkRefCnt.h>

Public Member Functions
	SkNVRefCnt ()
	~SkNVRefCnt ()
bool	unique () const
void	ref () const
void	unref () const
void	deref () const
bool	refCntGreaterThan (int32_t threadIsolatedTestCnt) const

Detailed Description

template<typename Derived>
class SkNVRefCnt< Derived >

Definition at line 160 of file SkRefCnt.h.

Constructor & Destructor Documentation

SkNVRefCnt()

template<typename Derived >

SkNVRefCnt< Derived >::SkNVRefCnt ( )

inline

Definition at line 162 of file SkRefCnt.h.

: fRefCnt(1) {}

~SkNVRefCnt()

template<typename Derived >

SkNVRefCnt< Derived >::~SkNVRefCnt ( )

inline

Definition at line 163 of file SkRefCnt.h.

                  {
    #ifdef SK_DEBUG
        int rc = fRefCnt.load(std::memory_order_relaxed);
        SkASSERTF(rc == 1, "NVRefCnt was %d", rc);
    #endif
    }

Member Function Documentation

deref()

template<typename Derived >

void SkNVRefCnt< Derived >::deref ( ) const

inline

Definition at line 184 of file SkRefCnt.h.

{ this->unref(); }

ref()

template<typename Derived >

void SkNVRefCnt< Derived >::ref ( ) const

inline

Definition at line 176 of file SkRefCnt.h.

{ (void)fRefCnt.fetch_add(+1, std::memory_order_relaxed); }

refCntGreaterThan()

template<typename Derived >

bool SkNVRefCnt< Derived >::refCntGreaterThan ( int32_t  threadIsolatedTestCnt ) const

inline

Definition at line 191 of file SkRefCnt.h.

                                                                {
        int cnt = fRefCnt.load(std::memory_order_acquire);
        // If this fails then the above contract has been violated.
        SkASSERT(cnt >= threadIsolatedTestCnt);
        return cnt > threadIsolatedTestCnt;
    }

unique()

template<typename Derived >

bool SkNVRefCnt< Derived >::unique ( ) const

inline

Definition at line 175 of file SkRefCnt.h.

{ return 1 == fRefCnt.load(std::memory_order_acquire); }

unref()

template<typename Derived >

void SkNVRefCnt< Derived >::unref ( ) const

inline

Definition at line 177 of file SkRefCnt.h.

                       {
        if (1 == fRefCnt.fetch_add(-1, std::memory_order_acq_rel)) {
            // restore the 1 for our destructor's assert
            SkDEBUGCODE(fRefCnt.store(1, std::memory_order_relaxed));
            delete (const Derived*)this;
        }
    }

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

• third_party/skia/include/core/SkRefCnt.h