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Diffstat (limited to 'contrib/libstdc++/stl/defalloc.h')
-rw-r--r-- | contrib/libstdc++/stl/defalloc.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/contrib/libstdc++/stl/defalloc.h b/contrib/libstdc++/stl/defalloc.h new file mode 100644 index 0000000..49690f8 --- /dev/null +++ b/contrib/libstdc++/stl/defalloc.h @@ -0,0 +1,86 @@ +/* + * + * Copyright (c) 1994 + * Hewlett-Packard Company + * + * Permission to use, copy, modify, distribute and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appear in all copies and + * that both that copyright notice and this permission notice appear + * in supporting documentation. Hewlett-Packard Company makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + */ + +// Inclusion of this file is DEPRECATED. This is the original HP +// default allocator. It is provided only for backward compatibility. +// +// DO NOT USE THIS FILE unless you have an old container implementation +// that requires an allocator with the HP-style interface. SGI STL +// uses a different allocator interface. SGI-style allocators are not +// parametrized with respect to the object type; they traffic in void * +// pointers. This file is not included by any other SGI STL header. + +#ifndef DEFALLOC_H +#define DEFALLOC_H + +#include <new.h> +#include <stddef.h> +#include <stdlib.h> +#include <limits.h> +#include <iostream.h> +#include <algobase.h> + + +template <class T> +inline T* allocate(ptrdiff_t size, T*) { + set_new_handler(0); + T* tmp = (T*)(::operator new((size_t)(size * sizeof(T)))); + if (tmp == 0) { + cerr << "out of memory" << endl; + exit(1); + } + return tmp; +} + + +template <class T> +inline void deallocate(T* buffer) { + ::operator delete(buffer); +} + +template <class T> +class allocator { +public: + typedef T value_type; + typedef T* pointer; + typedef const T* const_pointer; + typedef T& reference; + typedef const T& const_reference; + typedef size_t size_type; + typedef ptrdiff_t difference_type; + pointer allocate(size_type n) { + return ::allocate((difference_type)n, (pointer)0); + } + void deallocate(pointer p) { ::deallocate(p); } + pointer address(reference x) { return (pointer)&x; } + const_pointer const_address(const_reference x) { + return (const_pointer)&x; + } + size_type init_page_size() { + return max(size_type(1), size_type(4096/sizeof(T))); + } + size_type max_size() const { + return max(size_type(1), size_type(UINT_MAX/sizeof(T))); + } +}; + +class allocator<void> { +public: + typedef void* pointer; +}; + + + +#endif |