+};
+
+template <typename Type_>
+struct CYPoolAllocator {
+ apr_pool_t *pool_;
+
+ typedef Type_ value_type;
+ typedef value_type *pointer;
+ typedef const value_type *const_pointer;
+ typedef value_type &reference;
+ typedef const value_type &const_reference;
+ typedef std::size_t size_type;
+ typedef std::ptrdiff_t difference_type;
+
+ CYPoolAllocator() :
+ pool_(NULL)
+ {
+ }
+
+ template <typename Right_>
+ CYPoolAllocator(const CYPoolAllocator<Right_> &rhs) :
+ pool_(rhs.pool_)
+ {
+ }
+
+ pointer allocate(size_type size, const void *hint = 0) {
+ return reinterpret_cast<pointer>(apr_palloc(pool_, size));
+ }
+
+ void deallocate(pointer data, size_type size) {
+ }
+
+ void construct(pointer address, const Type_ &rhs) {
+ new(address) Type_(rhs);
+ }
+
+ void destroy(pointer address) {
+ address->~Type_();
+ }
+
+ template <typename Right_>
+ inline bool operator==(const CYPoolAllocator<Right_> &rhs) {
+ return pool_ == rhs.pool_;
+ }
+
+ template <typename Right_>
+ inline bool operator!=(const CYPoolAllocator<Right_> &rhs) {
+ return !operator==(rhs);
+ }