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Special case array construction for trivially default-constructible types and array destruction for trivially-destroyable types.

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[SVN r81749]
This commit is contained in:
Glen Fernandes
2012-12-07 03:10:22 +00:00
parent 1209531fe0
commit b3f2ebedbc
1 changed files with 28 additions and 0 deletions
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28
include/boost/smart_ptr/detail/array_utility.hpp
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@ -17,12 +17,32 @@ namespace boost {
namespace detail {
template<typename T>
inline void array_destroy(T* memory, std::size_t size) {
boost::has_trivial_destructor<T> type;
array_destroy(memory, size, type);
}
template<typename T>
inline void array_destroy(T*, std::size_t, boost::true_type) {
}
template<typename T>
inline void array_destroy(T* memory, std::size_t size, boost::false_type) {
for (std::size_t i = size; i > 0; ) {
memory[--i].~T();
}
}
template<typename T>
inline void array_construct(T* memory, std::size_t size) {
boost::has_trivial_default_constructor<T> type;
array_construct(memory, size, type);
}
template<typename T>
inline void array_construct(T* memory, std::size_t size, boost::true_type) {
for (std::size_t i = 0; i < size; i++) {
void* p1 = memory + i;
::new(p1) T();
}
}
template<typename T>
inline void array_construct(T* memory, std::size_t size, boost::false_type) {
std::size_t i = 0;
try {
for (; i < size; i++) {
@ -92,6 +112,14 @@ namespace boost {
}
template<typename T>
inline void array_construct_noinit(T* memory, std::size_t size) {
boost::has_trivial_default_constructor<T> type;
array_construct_noinit(memory, size, type);
}
template<typename T>
inline void array_construct_noinit(T*, std::size_t, boost::true_type) {
}
template<typename T>
inline void array_construct_noinit(T* memory, std::size_t size, boost::false_type) {
std::size_t i = 0;
try {
for (; i < size; i++) {