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Diffstat (limited to 'src/common/eventfd.cpp')
-rw-r--r-- | src/common/eventfd.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/common/eventfd.cpp b/src/common/eventfd.cpp new file mode 100644 index 0000000..1828b1f --- /dev/null +++ b/src/common/eventfd.cpp @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * @file eventfd.cpp + * @author Jaemin Ryu (jm77.ryu@samsung.com) + * @version 1.0 + * @brief + */ + +#include <sys/types.h> +#include <unistd.h> +#include <exception> +#include <system_error> +#include <cstdint> + +#include "eventfd.h" + +namespace CCHECKER { + +EventFD::EventFD(unsigned int initval, int flags) +{ + fd = ::eventfd(initval, flags); + if (fd == -1) { + throw std::logic_error("EventFd from constructor is failed!!"); + } +} + +EventFD::~EventFD() +{ + if (fd != -1) { + ::close(fd); + } +} + +void EventFD::send() +{ + const std::uint64_t val = 1; + if (::write(fd, &val, sizeof(val)) == -1) { + throw std::logic_error("EventFd send to fd is failed!!"); + } +} + +void EventFD::receive() +{ + std::uint64_t val; + if (::read(fd, &val, sizeof(val)) == -1) { + throw std::logic_error("EventFd read to fd is failed!!"); + } +} + +} // namespace CCHECKER |