/usr/include/sparsehash/internal/libc_allocator_with_realloc.h is in libsparsehash-dev 2.0.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// ---
#ifndef UTIL_GTL_LIBC_ALLOCATOR_WITH_REALLOC_H_
#define UTIL_GTL_LIBC_ALLOCATOR_WITH_REALLOC_H_
#include <sparsehash/internal/sparseconfig.h>
#include <stdlib.h> // for malloc/realloc/free
#include <stddef.h> // for ptrdiff_t
#include <new> // for placement new
_START_GOOGLE_NAMESPACE_
template<class T>
class libc_allocator_with_realloc {
public:
typedef T value_type;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef T& reference;
typedef const T& const_reference;
libc_allocator_with_realloc() {}
libc_allocator_with_realloc(const libc_allocator_with_realloc&) {}
~libc_allocator_with_realloc() {}
pointer address(reference r) const { return &r; }
const_pointer address(const_reference r) const { return &r; }
pointer allocate(size_type n, const_pointer = 0) {
return static_cast<pointer>(malloc(n * sizeof(value_type)));
}
void deallocate(pointer p, size_type) {
free(p);
}
pointer reallocate(pointer p, size_type n) {
return static_cast<pointer>(realloc(p, n * sizeof(value_type)));
}
size_type max_size() const {
return static_cast<size_type>(-1) / sizeof(value_type);
}
void construct(pointer p, const value_type& val) {
new(p) value_type(val);
}
void destroy(pointer p) { p->~value_type(); }
template <class U>
libc_allocator_with_realloc(const libc_allocator_with_realloc<U>&) {}
template<class U>
struct rebind {
typedef libc_allocator_with_realloc<U> other;
};
};
// libc_allocator_with_realloc<void> specialization.
template<>
class libc_allocator_with_realloc<void> {
public:
typedef void value_type;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef void* pointer;
typedef const void* const_pointer;
template<class U>
struct rebind {
typedef libc_allocator_with_realloc<U> other;
};
};
template<class T>
inline bool operator==(const libc_allocator_with_realloc<T>&,
const libc_allocator_with_realloc<T>&) {
return true;
}
template<class T>
inline bool operator!=(const libc_allocator_with_realloc<T>&,
const libc_allocator_with_realloc<T>&) {
return false;
}
_END_GOOGLE_NAMESPACE_
#endif // UTIL_GTL_LIBC_ALLOCATOR_WITH_REALLOC_H_
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