/usr/include/jsoncpp/json/allocator.h is in libjsoncpp-dev 1.7.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | // Copyright 2007-2010 Baptiste Lepilleur
// Distributed under MIT license, or public domain if desired and
// recognized in your jurisdiction.
// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
#ifndef CPPTL_JSON_ALLOCATOR_H_INCLUDED
#define CPPTL_JSON_ALLOCATOR_H_INCLUDED
#include <cstring>
#include <memory>
namespace Json {
template<typename T>
class SecureAllocator {
public:
// Type definitions
using value_type = T;
using pointer = T*;
using const_pointer = const T*;
using reference = T&;
using const_reference = const T&;
using size_type = std::size_t;
using difference_type = std::ptrdiff_t;
/**
* Allocate memory for N items using the standard allocator.
*/
pointer allocate(size_type n) {
// allocate using "global operator new"
return static_cast<pointer>(::operator new(n * sizeof(T)));
}
/**
* Release memory which was allocated for N items at pointer P.
*
* The memory block is filled with zeroes before being released.
* The pointer argument is tagged as "volatile" to prevent the
* compiler optimizing out this critical step.
*/
void deallocate(volatile pointer p, size_type n) {
std::memset(p, 0, n * sizeof(T));
// free using "global operator delete"
::operator delete(p);
}
/**
* Construct an item in-place at pointer P.
*/
template<typename... Args>
void construct(pointer p, Args&&... args) {
// construct using "placement new" and "perfect forwarding"
::new (static_cast<void*>(p)) T(std::forward<Args>(args)...);
}
size_type max_size() const {
return size_t(-1) / sizeof(T);
}
pointer address( reference x ) const {
return std::addressof(x);
}
const_pointer address( const_reference x ) const {
return std::addressof(x);
}
/**
* Destroy an item in-place at pointer P.
*/
void destroy(pointer p) {
// destroy using "explicit destructor"
p->~T();
}
// Boilerplate
SecureAllocator() {}
template<typename U> SecureAllocator(const SecureAllocator<U>&) {}
template<typename U> struct rebind { using other = SecureAllocator<U>; };
};
template<typename T, typename U>
bool operator==(const SecureAllocator<T>&, const SecureAllocator<U>&) {
return true;
}
template<typename T, typename U>
bool operator!=(const SecureAllocator<T>&, const SecureAllocator<U>&) {
return false;
}
} //namespace Json
#endif // CPPTL_JSON_ALLOCATOR_H_INCLUDED
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