refactor: move compat.h into compat/

1 files changed, 122 insertions, 0 deletions

diff --git a/src/compat/compat.h b/src/compat/compat.h
new file mode 100644
index 0000000000..51ed03eef4
--- /dev/null
+++ b/src/compat/compat.h
@@ -0,0 +1,122 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2021 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_COMPAT_H
+#define BITCOIN_COMPAT_COMPAT_H
+
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
+#ifdef WIN32
+#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>
+#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 WSAEAGAIN           EAGAIN
+#define WSAEMSGSIZE         EMSGSIZE
+#define WSAEINTR            EINTR
+#define WSAEINPROGRESS      EINPROGRESS
+#define WSAEADDRINUSE       EADDRINUSE
+#define WSAENOTSOCK         EBADF
+#define INVALID_SOCKET      (SOCKET)(~0)
+#define SOCKET_ERROR        -1
+#else
+#ifndef WSAEAGAIN
+#ifdef EAGAIN
+#define WSAEAGAIN EAGAIN
+#else
+#define WSAEAGAIN WSAEWOULDBLOCK
+#endif
+#endif
+#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
+
+#ifndef WIN32
+typedef void* sockopt_arg_type;
+#else
+typedef char* sockopt_arg_type;
+#endif
+
+#ifdef WIN32
+// Export main() and ensure working ASLR when using mingw-w64.
+// Exporting a symbol will prevent the linker from stripping
+// the .reloc section from the binary, which is a requirement
+// for ASLR. While release builds are not affected, anyone
+// building with a binutils < 2.36 is subject to this ld bug.
+#define MAIN_FUNCTION __declspec(dllexport) int main(int argc, char* argv[])
+#else
+#define MAIN_FUNCTION int main(int argc, char* argv[])
+#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__)
+#define USE_POLL
+#endif
+
+bool static inline IsSelectableSocket(const SOCKET& s) {
+#if defined(USE_POLL) || defined(WIN32)
+    return true;
+#else
+    return (s < FD_SETSIZE);
+#endif
+}
+
+// MSG_NOSIGNAL is not available on some platforms, if it doesn't exist define it as 0
+#if !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
+
+// MSG_DONTWAIT is not available on some platforms, if it doesn't exist define it as 0
+#if !defined(MSG_DONTWAIT)
+#define MSG_DONTWAIT 0
+#endif
+
+#endif // BITCOIN_COMPAT_COMPAT_H