Add kqueue support for macOS/BSD#735
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Implemented KQueuePoller to replace EPollPoller on macOS/BSD platforms. Key changes: - New KQueuePoller class using kqueue() syscall for IO multiplexing - EventLoop now uses socketpair instead of eventfd on macOS - TimerQueue uses polling approach instead of timerfd on macOS - Fixed bindOrDie to use correct address length for IPv4 - Various compatibility fixes for macOS (byte order, threading, etc.) KQueuePoller features: - Uses kqueue()/kevent() for event registration and waiting - EVFILT_READ/EVFILT_WRITE for read/write events - EVFILT_EXCEPT for exception handling - Edge-triggered semantics compatible with muduo's level-triggered design Tested with: - timerqueue_unittest - eventloopthread_unittest - eventloopthreadpool_unittest - TcpServer binding
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Summary
Add kqueue support for macOS/BSD platforms, enabling muduo network library to work on Apple macOS and other BSD-derived systems.
Motivation
muduo currently only supports epoll on Linux. macOS users cannot build or use muduo due to missing:
Changes
New Files
muduo/net/poller/KQueuePoller.cc- KQueue implementationmuduo/net/poller/KQueuePoller.h- KQueue headerPlatform Abstraction
muduo/net/EventLoop.cc- Uses socketpair instead of eventfd on macOSmuduo/net/TimerQueue.cc- Uses polling instead of timerfd on macOSmuduo/net/SocketsOps.cc- Fixed bindOrDie address length bugCompatibility Fixes
muduo/net/Endian.h- Added macOS byte order macrosmuduo/base/Mutex.h- macOS-compatible assert_perror_failTesting
Technical Details
KQueuePoller uses macOS/BSD kqueue syscall:
kqueue()creates kernel event queuekevent()registers/changes/removes events and waits for eventsEVFILT_READ/EVFILT_WRITEmap to POLLIN/POLLOUTBreaking Changes
None - fully backward compatible, Linux epoll path unchanged.