132 lines
2.9 KiB
C++
132 lines
2.9 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/port/detail/NativeFd.h"
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#include "td/utils/format.h"
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#include "td/utils/logging.h"
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#include "td/utils/Status.h"
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#if TD_PORT_POSIX
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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namespace td {
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NativeFd::NativeFd(Fd fd) : fd_(fd) {
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VLOG(fd) << *this << " create";
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}
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NativeFd::NativeFd(Fd fd, bool nolog) : fd_(fd) {
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}
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#if TD_PORT_WINDOWS
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NativeFd::NativeFd(Socket socket) : fd_(reinterpret_cast<Fd>(socket)), is_socket_(true) {
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VLOG(fd) << *this << " create";
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}
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#endif
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NativeFd::~NativeFd() {
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close();
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}
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NativeFd::operator bool() const {
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return fd_.get() != empty_fd();
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}
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NativeFd::Fd NativeFd::empty_fd() {
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#if TD_PORT_POSIX
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return -1;
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#elif TD_PORT_WINDOWS
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return INVALID_HANDLE_VALUE;
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#endif
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}
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NativeFd::Fd NativeFd::fd() const {
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return fd_.get();
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}
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NativeFd::Socket NativeFd::socket() const {
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#if TD_PORT_POSIX
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return fd();
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#elif TD_PORT_WINDOWS
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CHECK(is_socket_);
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return reinterpret_cast<Socket>(fd_.get());
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#endif
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}
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Status NativeFd::set_is_blocking(bool is_blocking) const {
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#if TD_PORT_POSIX
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auto old_flags = fcntl(fd(), F_GETFL);
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if (old_flags == -1) {
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return OS_SOCKET_ERROR("Failed to get socket flags");
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}
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auto new_flags = is_blocking ? old_flags & ~O_NONBLOCK : old_flags | O_NONBLOCK;
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if (new_flags != old_flags && fcntl(fd(), F_SETFL, new_flags) == -1) {
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return OS_SOCKET_ERROR("Failed to set socket flags");
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}
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return Status::OK();
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#elif TD_PORT_WINDOWS
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return set_is_blocking_unsafe(is_blocking);
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#endif
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}
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Status NativeFd::set_is_blocking_unsafe(bool is_blocking) const {
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#if TD_PORT_POSIX
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if (fcntl(fd(), F_SETFL, is_blocking ? 0 : O_NONBLOCK) == -1) {
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#elif TD_PORT_WINDOWS
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u_long mode = is_blocking;
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if (ioctlsocket(socket(), FIONBIO, &mode) != 0) {
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#endif
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return OS_SOCKET_ERROR("Failed to change socket flags");
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}
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return Status::OK();
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}
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Status NativeFd::duplicate(const NativeFd &to) const {
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#if TD_PORT_POSIX
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CHECK(*this);
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CHECK(to);
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if (dup2(fd(), to.fd()) == -1) {
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return OS_ERROR("Failed to duplicate file descriptor");
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}
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return Status::OK();
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#elif TD_PORT_WINDOWS
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return Status::Error("Not supported");
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#endif
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}
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void NativeFd::close() {
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if (!*this) {
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return;
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}
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VLOG(fd) << *this << " close";
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#if TD_PORT_WINDOWS
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if (is_socket_ ? closesocket(socket()) : !CloseHandle(fd())) {
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#elif TD_PORT_POSIX
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if (::close(fd()) < 0) {
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#endif
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auto error = OS_ERROR("Close fd");
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LOG(ERROR) << error;
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}
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fd_ = {};
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}
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NativeFd::Fd NativeFd::release() {
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VLOG(fd) << *this << " release";
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auto res = fd_.get();
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fd_ = {};
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return res;
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}
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StringBuilder &operator<<(StringBuilder &sb, const NativeFd &fd) {
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return sb << tag("fd", fd.fd());
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}
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} // namespace td
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