mirror of https://github.com/bitcoin/bitcoin.git
116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2022 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_COMPAT_COMPAT_H
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#define BITCOIN_COMPAT_COMPAT_H
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// Windows defines FD_SETSIZE to 64 (see _fd_types.h in mingw-w64),
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// which is too small for our usage, but allows us to redefine it safely.
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// We redefine it to be 1024, to match glibc, see typesizes.h.
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#ifdef WIN32
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#ifdef FD_SETSIZE
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#undef FD_SETSIZE
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#endif
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#define FD_SETSIZE 1024
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <cstdint>
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#else
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#include <arpa/inet.h> // IWYU pragma: export
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#include <fcntl.h> // IWYU pragma: export
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#include <ifaddrs.h> // IWYU pragma: export
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#include <net/if.h> // IWYU pragma: export
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#include <netdb.h> // IWYU pragma: export
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#include <netinet/in.h> // IWYU pragma: export
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#include <netinet/tcp.h> // IWYU pragma: export
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#include <sys/mman.h> // IWYU pragma: export
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#include <sys/select.h> // IWYU pragma: export
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#include <sys/socket.h> // IWYU pragma: export
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#include <sys/types.h> // IWYU pragma: export
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#include <unistd.h> // IWYU pragma: export
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#endif
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// Windows does not have `sa_family_t` - it defines `sockaddr::sa_family` as `u_short`.
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// Thus define `sa_family_t` on Windows too so that the rest of the code can use `sa_family_t`.
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// See https://learn.microsoft.com/en-us/windows/win32/api/winsock/ns-winsock-sockaddr#syntax
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#ifdef WIN32
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typedef u_short sa_family_t;
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#endif
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// We map Linux / BSD error functions and codes, to the equivalent
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// Windows definitions, and use the WSA* names throughout our code.
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// Note that glibc defines EWOULDBLOCK as EAGAIN (see errno.h).
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#ifndef WIN32
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typedef unsigned int SOCKET;
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#include <cerrno>
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#define WSAGetLastError() errno
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#define WSAEINVAL EINVAL
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#define WSAEWOULDBLOCK EWOULDBLOCK
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#define WSAEAGAIN EAGAIN
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#define WSAEMSGSIZE EMSGSIZE
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#define WSAEINTR EINTR
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#define WSAEINPROGRESS EINPROGRESS
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#define WSAEADDRINUSE EADDRINUSE
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#define INVALID_SOCKET (SOCKET)(~0)
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#define SOCKET_ERROR -1
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#else
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// WSAEAGAIN doesn't exist on Windows
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#ifdef EAGAIN
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#define WSAEAGAIN EAGAIN
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#else
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#define WSAEAGAIN WSAEWOULDBLOCK
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#endif
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#endif
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// Windows defines MAX_PATH as it's maximum path length.
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// We define MAX_PATH for use on non-Windows systems.
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#ifndef WIN32
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#define MAX_PATH 1024
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#endif
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// ssize_t is POSIX, and not present when using MSVC.
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#ifdef _MSC_VER
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#include <BaseTsd.h>
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typedef SSIZE_T ssize_t;
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#endif
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// The type of the option value passed to getsockopt & setsockopt
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// differs between Windows and non-Windows.
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#ifndef WIN32
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typedef void* sockopt_arg_type;
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#else
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typedef char* sockopt_arg_type;
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#endif
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#ifdef WIN32
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// Export main() and ensure working ASLR when using mingw-w64.
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// Exporting a symbol will prevent the linker from stripping
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// the .reloc section from the binary, which is a requirement
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// for ASLR. While release builds are not affected, anyone
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// building with a binutils < 2.36 is subject to this ld bug.
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#define MAIN_FUNCTION __declspec(dllexport) int main(int argc, char* argv[])
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#else
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#define MAIN_FUNCTION int main(int argc, char* argv[])
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#endif
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// Note these both should work with the current usage of poll, but best to be safe
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// WIN32 poll is broken https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/
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// __APPLE__ poll is broke https://github.com/bitcoin/bitcoin/pull/14336#issuecomment-437384408
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#if defined(__linux__)
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#define USE_POLL
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#endif
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// MSG_NOSIGNAL is not available on some platforms, if it doesn't exist define it as 0
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#if !defined(MSG_NOSIGNAL)
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#define MSG_NOSIGNAL 0
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#endif
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// MSG_DONTWAIT is not available on some platforms, if it doesn't exist define it as 0
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#if !defined(MSG_DONTWAIT)
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#define MSG_DONTWAIT 0
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#endif
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#endif // BITCOIN_COMPAT_COMPAT_H
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