You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.9 KiB
66 lines
1.9 KiB
/* |
|
* Copyright (C) 2017 The Android Open Source Project |
|
* |
|
* 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 specic language governing permissions and |
|
* limitations under the License. |
|
*/ |
|
|
|
#include <android-base/logging.h> |
|
|
|
#include "libappfuse/EpollController.h" |
|
|
|
namespace android { |
|
namespace fuse { |
|
|
|
EpollController::EpollController(base::unique_fd&& poll_fd) : poll_fd_(std::move(poll_fd)) { |
|
} |
|
|
|
bool EpollController::Wait(size_t event_count) { |
|
events_.resize(event_count); |
|
const int result = TEMP_FAILURE_RETRY(epoll_wait(poll_fd_, events_.data(), event_count, -1)); |
|
if (result == -1) { |
|
PLOG(ERROR) << "Failed to wait for epoll"; |
|
return false; |
|
} |
|
events_.resize(result); |
|
return true; |
|
} |
|
|
|
bool EpollController::AddFd(int fd, int events, void* data) { |
|
return InvokeControl(EPOLL_CTL_ADD, fd, events, data); |
|
} |
|
|
|
bool EpollController::UpdateFd(int fd, int events, void* data) { |
|
return InvokeControl(EPOLL_CTL_MOD, fd, events, data); |
|
} |
|
|
|
bool EpollController::RemoveFd(int fd) { |
|
return InvokeControl(EPOLL_CTL_DEL, fd, /* events */ 0, nullptr); |
|
} |
|
|
|
const std::vector<epoll_event>& EpollController::events() const { |
|
return events_; |
|
} |
|
|
|
bool EpollController::InvokeControl(int op, int fd, int events, void* data) const { |
|
epoll_event event; |
|
memset(&event, 0, sizeof(event)); |
|
event.events = events; |
|
event.data.ptr = data; |
|
if (epoll_ctl(poll_fd_, op, fd, &event) == -1) { |
|
PLOG(ERROR) << "epoll_ctl() error op=" << op; |
|
return false; |
|
} |
|
return true; |
|
} |
|
} |
|
}
|
|
|