github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/test/util/epoll_util.h (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #ifndef GVISOR_TEST_UTIL_EPOLL_UTIL_H_
    16  #define GVISOR_TEST_UTIL_EPOLL_UTIL_H_
    17  
    18  #include "test/util/file_descriptor.h"
    19  #include "test/util/posix_error.h"
    20  
    21  namespace gvisor {
    22  namespace testing {
    23  
    24  // Returns a new epoll file descriptor.
    25  PosixErrorOr<FileDescriptor> NewEpollFD(int size = 1);
    26  
    27  // Registers `target_fd` with the epoll instance represented by `epoll_fd` for
    28  // the epoll events `events`. Events on `target_fd` will be indicated by setting
    29  // data.u64 to `data` in the returned epoll_event.
    30  PosixError RegisterEpollFD(int epoll_fd, int target_fd, int events,
    31                             uint64_t data);
    32  
    33  }  // namespace testing
    34  }  // namespace gvisor
    35  
    36  #endif  // GVISOR_TEST_UTIL_EPOLL_UTIL_H_