yapb-noob-edition/include/crlib/cr-alloc.h
2019-09-22 00:08:37 +03:00

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1.7 KiB
C++

//
// Yet Another POD-Bot, based on PODBot by Markus Klinge ("CountFloyd").
// Copyright (c) YaPB Development Team.
//
// This software is licensed under the BSD-style license.
// Additional exceptions apply. For full license details, see LICENSE.txt or visit:
// https://yapb.ru/license
//
#pragma once
#include <new>
#include <crlib/cr-basic.h>
#include <crlib/cr-movable.h>
#include <crlib/cr-platform.h>
CR_NAMESPACE_BEGIN
// default allocator for cr-objects
class Allocator : public Singleton <Allocator> {
public:
Allocator () = default;
~Allocator () = default;
public:
template <typename T> T *allocate (const size_t length = 1) {
auto ptr = reinterpret_cast <T *> (calloc (length, sizeof (T)));
if (!ptr) {
plat.abort ();
}
// calloc on linux with debug enabled doesn't always zero out memory
#if defined (CR_DEBUG) && !defined (CR_WINDOWS)
auto *zeroing = reinterpret_cast <uint8 *> (ptr);
for (size_t i = 0; i < length; ++i) {
zeroing[i] = 0;
}
#endif
return ptr;
}
template <typename T> void deallocate (T *ptr) {
if (ptr) {
free (reinterpret_cast <T *> (ptr));
}
}
public:
template <typename T, typename ...Args> void construct (T *d, Args &&...args) {
new (d) T (cr::forward <Args> (args)...);
}
template <typename T> void destruct (T *d) {
d->~T ();
}
public:
template <typename T, typename ...Args> T *create (Args &&...args) {
auto d = allocate <T> ();
new (d) T (cr::forward <Args> (args)...);
return d;
}
template <typename T> void destroy (T *ptr) {
if (ptr) {
destruct (ptr);
deallocate (ptr);
}
}
};
static auto &alloc = Allocator::get ();
CR_NAMESPACE_END