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use array placement new and std::uninitialized for unbounded)array construction

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[SVN r25116]
This commit is contained in:
Michael Stevens
2004-09-15 14:09:50 +00:00
parent ce346d14a4
commit dcfb0be636
1 changed files with 9 additions and 27 deletions
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36
include/boost/numeric/ublas/storage.hpp
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@@ -68,9 +68,6 @@ namespace boost { namespace numeric { namespace ublas {
#endif
// No initialise - tag parameter specified to disable construction of array value_types's
struct no_init {};
// Unbounded array - with allocator
template<class T, class ALLOC>
class unbounded_array {
@@ -96,10 +93,7 @@ namespace boost { namespace numeric { namespace ublas {
alloc_(a), size_ (size) {
if (size_) {
data_ = alloc_.allocate (size_ BOOST_UBLAS_ALLOCATOR_HINT);
const iterator i_end = end ();
for (iterator i = begin (); i != i_end; ++i) {
iterator_default_construct (i) ;
}
new (data_) value_type[size_];
}
}
// No value initialised, but still be default constructed
@@ -108,10 +102,7 @@ namespace boost { namespace numeric { namespace ublas {
alloc_ (a), size_ (size) {
if (size_) {
data_ = alloc_.allocate (size_ BOOST_UBLAS_ALLOCATOR_HINT);
const iterator i_end = end ();
for (iterator i = begin (); i != i_end; ++i) {
iterator_construct (i, init);
}
std::uninitialized_fill (begin(), end(), init);
}
}
BOOST_UBLAS_INLINE
@@ -119,12 +110,7 @@ namespace boost { namespace numeric { namespace ublas {
alloc_ (c.alloc_), size_ (c.size_) {
if (size_) {
data_ = alloc_.allocate (size_ BOOST_UBLAS_ALLOCATOR_HINT);
const_iterator ci = c.begin();
const iterator i_end = end();
for (iterator i = begin (); i != i_end; ++i) {
iterator_construct (i, *ci);
++ci;
}
std::uninitialized_copy (c.begin(), c.end(), begin());
}
else
data_ = 0;
@@ -315,15 +301,7 @@ namespace boost { namespace numeric { namespace ublas {
}
private:
// Handle explict construct/destroy on a (possibily indexed) iterator
BOOST_UBLAS_INLINE
void static iterator_construct (iterator &i, const value_type &v) {
new (&(*i)) value_type(v);
}
BOOST_UBLAS_INLINE
void static iterator_default_construct (iterator &i) {
new (&(*i)) value_type;
}
// Handle explict destroy on a (possibily indexed) iterator
BOOST_UBLAS_INLINE
void static iterator_destroy (iterator &i) {
(&(*i)) -> ~value_type();
@@ -366,7 +344,7 @@ namespace boost { namespace numeric { namespace ublas {
size_ (size) /*, data_ ()*/ {
if (size_ > N)
bad_size ().raise ();
// ISSUE elements should be value constructed here, but we must fill instead as already constructed
// ISSUE elements should be value constructed here, but we must fill instead as already default constructed
std::fill (begin(), end(), init) ;
}
BOOST_UBLAS_INLINE
@@ -523,6 +501,10 @@ namespace boost { namespace numeric { namespace ublas {
BOOST_UBLAS_BOUNDED_ARRAY_ALIGN value_type data_ [N];
};
// No initialise - tag parameter specified to disable construction of array value_types's
struct no_init {};
// Array adaptor with normal deep copy semantics of elements
template<class T>
class array_adaptor {