cpp-ipc/src/libipc/memory/resource.h
2021-09-11 15:52:48 +08:00

91 lines
2.6 KiB
C++
Executable File

#pragma once
#include <type_traits>
#include <limits>
#include <utility>
#include <functional>
#include <unordered_map>
#include <map>
#include <string>
#include <cstdio>
#include "libipc/def.h"
#include "libipc/memory/alloc.h"
#include "libipc/memory/wrapper.h"
#include "libipc/platform/detail.h"
namespace ipc {
namespace mem {
//using async_pool_alloc = static_wrapper<variable_wrapper<async_wrapper<
// detail::fixed_alloc<
// variable_alloc <sizeof(void*) * 1024 * 256>,
// fixed_expand_policy<sizeof(void*) * 1024, sizeof(void*) * 1024 * 256>
// >,
// default_recycler >>>;
using async_pool_alloc = ipc::mem::static_alloc;
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 T>
struct hash : public std::hash<T> {};
template <typename Key, typename T>
using unordered_map = std::unordered_map<
Key, T, ipc::hash<Key>, std::equal_to<Key>, ipc::mem::allocator<std::pair<Key const, T>>
>;
template <typename Key, typename T>
using map = std::map<
Key, T, std::less<Key>, ipc::mem::allocator<std::pair<Key const, 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 <> struct hash<string> {
std::size_t operator()(string const &val) const noexcept {
return std::hash<char const *>{}(val.c_str());
}
};
template <> struct hash<wstring> {
std::size_t operator()(wstring const &val) const noexcept {
return std::hash<wchar_t const *>{}(val.c_str());
}
};
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