cpp-ipc/src/memory/resource.h
2019-07-03 23:14:43 +08:00

69 lines
1.9 KiB
C++
Executable File

#pragma once
#include <type_traits>
#include <limits>
#include <utility>
#include <functional>
#include <unordered_map>
#include <string>
#include <cstdio>
#include "def.h"
#include "memory/alloc.h"
#include "memory/wrapper.h"
#include "platform/detail.h"
namespace ipc {
namespace mem {
using chunk_variable_alloc = variable_alloc<sizeof(void*) * 256 * 1024 /* 2MB(x64) */>;
template <std::size_t Size>
using static_async_fixed = static_wrapper<async_wrapper<fixed_alloc<Size, chunk_variable_alloc>>>;
using async_pool_alloc = static_alloc/*variable_wrapper<static_async_fixed>*/;
template <typename T>
using allocator = allocator_wrapper<T, async_pool_alloc>;
} // namespace mem
namespace {
constexpr char const * pf(int) { return "%d" ; }
constexpr char const * pf(long) { return "%ld" ; }
constexpr char const * pf(long long) { return "%lld"; }
constexpr char const * pf(unsigned int) { return "%u" ; }
constexpr char const * pf(unsigned long) { return "%lu" ; }
constexpr char const * pf(unsigned long long) { return "%llu"; }
constexpr char const * pf(float) { return "%f" ; }
constexpr char const * pf(double) { return "%f" ; }
constexpr char const * pf(long double) { return "%Lf" ; }
} // internal-linkage
template <typename Key, typename T>
using unordered_map = std::unordered_map<
Key, T, std::hash<Key>, std::equal_to<Key>, ipc::mem::allocator<std::pair<const Key, T>>
>;
template <typename Char>
using basic_string = std::basic_string<
Char, std::char_traits<Char>, ipc::mem::allocator<Char>
>;
using string = basic_string<char>;
using wstring = basic_string<wchar_t>;
template <typename T>
ipc::string to_string(T val) {
char buf[std::numeric_limits<T>::digits10 + 1] {};
if (std::snprintf(buf, sizeof(buf), pf(val), val) > 0) {
return buf;
}
return {};
}
} // namespace ipc