2 Copyright (c) 2018-2019 Nokia.
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
8 http://www.apache.org/licenses/LICENSE-2.0
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
18 * This source code is part of the near-RT RIC (RAN Intelligent Controller)
19 * platform project (RICP).
22 #include "private/system.hpp"
23 #include <system_error>
27 #include <sys/epoll.h>
28 #include <sys/timerfd.h>
29 #include <sys/eventfd.h>
30 #include "private/abort.hpp"
31 #include "private/createlogger.hpp"
33 using namespace shareddatalayer;
35 int System::poll(struct pollfd *fds, nfds_t nfds, int timeout)
37 const int ret(::poll(fds, nfds, timeout));
38 if (ret == -1 && errno != EINTR)
39 throw std::system_error(errno, std::system_category(), "poll");
43 int System::epoll_create1(int flags)
45 const int ret(::epoll_create1(flags));
47 throw std::system_error(errno, std::system_category(), "epoll_create1");
51 void System::epoll_ctl(int epfd, int op, int fd, epoll_event* event)
53 const int ret(::epoll_ctl(epfd, op, fd, event));
55 throw std::system_error(errno, std::system_category(), "epoll_ctl");
58 int System::epoll_wait(int epfd, epoll_event* events, int maxevents, int timeout)
60 const int ret(::epoll_wait(epfd, events, maxevents, timeout));
61 if ((ret == -1) && (errno != EINTR))
62 throw std::system_error(errno, std::system_category(), "epoll_wait");
66 int System::timerfd_create(int clockid, int flags)
68 const int ret(::timerfd_create(clockid, flags));
70 throw std::system_error(errno, std::system_category(), "timerfd_create");
74 void System::timerfd_settime(int fd, int flags, const itimerspec* new_value, itimerspec* old_value)
76 const int ret(::timerfd_settime(fd, flags, new_value, old_value));
78 throw std::system_error(errno, std::system_category(), "timerfd_settime");
81 ssize_t System::read(int fd, void* buf, size_t count)
83 const ssize_t ret(::read(fd, buf, count));
84 if ((ret == -1) && (errno != EINTR) && (errno != EAGAIN))
85 throw std::system_error(errno, std::system_category(), "read");
89 int System::eventfd(unsigned int initval, int flags)
91 const int ret(::eventfd(initval, flags));
93 throw std::system_error(errno, std::system_category(), "eventfd");
97 ssize_t System::write(int fd, const void* buf, size_t count)
101 ret = ::write(fd, buf, count);
102 while ((ret == -1) && (errno == EINTR));
104 throw std::system_error(errno, std::system_category(), "write");
108 std::chrono::steady_clock::duration System::time_since_epoch()
110 return std::chrono::steady_clock::now().time_since_epoch();
113 void System::close(int fd)
115 if (::close(fd) == -1)
117 int errno_saved = errno;
118 std::ostringstream msg;
119 msg << "close(" << fd << ") failed: " << strerror(errno_saved);
120 logErrorOnce(msg.str());
121 SHAREDDATALAYER_ABORT("close failed");
125 const char* System::getenv(const char* name)
127 return ::getenv(name);
130 System& System::getSystem() noexcept
132 static System system;