dash/src/compat.h
Wladimir J. van der Laan 70519e0495 Merge #14031: Make IS_TRIVIALLY_CONSTRUCTIBLE consistent on GCC < 5, don't patch clang
f1640d093fa682c98b000e377916cc32b2267e23 Make IS_TRIVIALLY_CONSTRUCTIBLE consistent on GCC < 5 (Ben Woosley)

Pull request description:

  `std::is_trivially_constructible<T>` is equivalent to `std::is_trivially_default_constructible<T>`
  `std::has_trivial_default_constructor<T>` is the GCC < 5 name for `std::is_trivially_default_constructible<T>`

  https://en.cppreference.com/w/cpp/types/is_default_constructible
  https://www.gnu.org/software/gcc/gcc-5/changes.html

  `std::is_trivial` was also used when compiling with clang, due to clang's use of `__GNUC__`. Test `__clang__`  to target the intended implementations.
  https://stackoverflow.com/a/28166605

  All callers currently only pass one template argument to IS_TRIVIALLY_CONSTRUCTIBLE, with this change the build would fail if someone attempted passing more.

Tree-SHA512: 3e36ddf20a1c0d76ad94d7c95f3fe5b90f4ee00389d5516b35c657136205e7a3ddff60789b0b0b2375624631f15a51eaad3570ef19a7b9df1469a50ba28415d1
2021-07-01 16:33:23 -05:00

130 lines
3.1 KiB
C++

// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_COMPAT_H
#define BITCOIN_COMPAT_H
#if defined(HAVE_CONFIG_H)
#include <config/dash-config.h>
#endif
#include <type_traits>
// GCC 4.8 is missing some C++11 type_traits,
// https://www.gnu.org/software/gcc/gcc-5/changes.html
#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 5
#define IS_TRIVIALLY_CONSTRUCTIBLE std::has_trivial_default_constructor
#else
#define IS_TRIVIALLY_CONSTRUCTIBLE std::is_trivially_default_constructible
#endif
#ifdef WIN32
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0501
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#ifndef NOMINMAX
#define NOMINMAX
#endif
#ifdef FD_SETSIZE
#undef FD_SETSIZE // prevent redefinition compiler warning
#endif
#define FD_SETSIZE 1024 // max number of fds in fd_set
#include <winsock2.h> // Must be included before mswsock.h and windows.h
#include <mswsock.h>
#include <windows.h>
#include <ws2tcpip.h>
#include <stdint.h>
#else
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <limits.h>
#include <netdb.h>
#include <unistd.h>
#endif
#ifndef WIN32
typedef unsigned int SOCKET;
#include <errno.h>
#define WSAGetLastError() errno
#define WSAEINVAL EINVAL
#define WSAEALREADY EALREADY
#define WSAEWOULDBLOCK EWOULDBLOCK
#define WSAEMSGSIZE EMSGSIZE
#define WSAEINTR EINTR
#define WSAEINPROGRESS EINPROGRESS
#define WSAEADDRINUSE EADDRINUSE
#define WSAENOTSOCK EBADF
#define INVALID_SOCKET (SOCKET)(~0)
#define SOCKET_ERROR -1
#define SD_SEND SHUT_WR
#endif
#ifdef WIN32
#ifndef S_IRUSR
#define S_IRUSR 0400
#define S_IWUSR 0200
#endif
#else
#define MAX_PATH 1024
#endif
#ifdef _MSC_VER
#if !defined(ssize_t)
#ifdef _WIN64
typedef int64_t ssize_t;
#else
typedef int32_t ssize_t;
#endif
#endif
#endif
#if HAVE_DECL_STRNLEN == 0
size_t strnlen( const char *start, size_t max_len);
#endif // HAVE_DECL_STRNLEN
#ifndef WIN32
typedef void* sockopt_arg_type;
#else
typedef char* sockopt_arg_type;
#endif
// Note these both should work with the current usage of poll, but best to be safe
// WIN32 poll is broken https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/
// __APPLE__ poll is broke https://github.com/bitcoin/bitcoin/pull/14336#issuecomment-437384408
#if defined(__linux__) || defined(__FreeBSD__)
#define USE_POLL
#endif
#if defined(__linux__)
#define USE_EPOLL
#endif
#if defined(__FreeBSD__) || defined(__APPLE__)
#define USE_KQUEUE
#endif
bool static inline IsSelectableSocket(const SOCKET& s) {
#if defined(USE_POLL) || defined(WIN32)
return true;
#else
return (s < FD_SETSIZE);
#endif
}
#endif // BITCOIN_COMPAT_H