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c++ move semantics for cv::UMat

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This commit is contained in:
Alexander Alekhin 2015-08-15 17:55:29 +03:00
parent 306aa0e699
commit ac37b77452
2 changed files with 68 additions and 0 deletions
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5
modules/core/include/opencv2/core/mat.hpp
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@ -2291,6 +2291,11 @@ public:
//! returns N if the matrix is 1-channel (N x ptdim) or ptdim-channel (1 x N) or (N x 1); negative number otherwise
int checkVector(int elemChannels, int depth=-1, bool requireContinuous=true) const;
#ifdef CV_CXX_MOVE_SEMANTICS
UMat(UMat&& m);
UMat& operator = (UMat&& m);
#endif
void* handle(int accessFlags) const;
void ndoffset(size_t* ofs) const;

63
modules/core/include/opencv2/core/mat.inl.hpp
View File

@ -3532,6 +3532,69 @@ size_t UMat::total() const
return p;
}
#ifdef CV_CXX_MOVE_SEMANTICS
inline
UMat::UMat(UMat&& m)
: flags(m.flags), dims(m.dims), rows(m.rows), cols(m.cols), allocator(m.allocator),
usageFlags(m.usageFlags), u(m.u), offset(m.offset), size(&rows)
{
if (m.dims <= 2) // move new step/size info
{
step[0] = m.step[0];
step[1] = m.step[1];
}
else
{
CV_DbgAssert(m.step.p != m.step.buf);
step.p = m.step.p;
size.p = m.size.p;
m.step.p = m.step.buf;
m.size.p = &m.rows;
}
m.flags = MAGIC_VAL; m.dims = m.rows = m.cols = 0;
m.allocator = NULL;
m.u = NULL;
m.offset = 0;
}
inline
UMat& UMat::operator = (UMat&& m)
{
release();
flags = m.flags; dims = m.dims; rows = m.rows; cols = m.cols;
allocator = m.allocator; usageFlags = m.usageFlags;
u = m.u;
offset = m.offset;
if (step.p != step.buf) // release self step/size
{
fastFree(step.p);
step.p = step.buf;
size.p = &rows;
}
if (m.dims <= 2) // move new step/size info
{
step[0] = m.step[0];
step[1] = m.step[1];
}
else
{
CV_DbgAssert(m.step.p != m.step.buf);
step.p = m.step.p;
size.p = m.size.p;
m.step.p = m.step.buf;
m.size.p = &m.rows;
}
m.flags = MAGIC_VAL; m.dims = m.rows = m.cols = 0;
m.allocator = NULL;
m.u = NULL;
m.offset = 0;
return *this;
}
#endif
inline bool UMatData::hostCopyObsolete() const { return (flags & HOST_COPY_OBSOLETE) != 0; }
inline bool UMatData::deviceCopyObsolete() const { return (flags & DEVICE_COPY_OBSOLETE) != 0; }
inline bool UMatData::deviceMemMapped() const { return (flags & DEVICE_MEM_MAPPED) != 0; }