Andy Pan

linux: exploit `eventfd` in `EPOLLET` mode to avoid syscall per wakeup

44

Register the eventfd with EPOLLET to enable edge-triggered notification where we're able to eliminate the overhead of reading the eventfd via system call on each wakeup event. When the eventfd...

kqueue: use EVFILT_USER as wakeup event if available

23

Eliminate the kernel overhead of `pipe` if we can.

kqueue: make changelist and eventlist of kevent share the array

8

The array used by the changelist of the kevent() can be reused by the eventlist, We should make use of this feature to eliminate the extra overhead of array allocation....

gcc: fix some compiler errors from the new GCC

6

New compiler errors to be fixed: `[-Wincompatible-pointer-types]`, `[-Wint-conversion]`, and `[-Wcast-function-type]` --- The [CI failure for -Wincompatible-pointer-types](https://github.com/libevent/libevent/pull/1652#issuecomment-2118836052) may have something to do with this [GCC patch](https://gcc.gnu.org/pipermail/gcc-cvs/2023-December/394351.html). See also this https://github.com/llvm/llvm-project/issues/74605. Thus,...

kqueue: disallow a few ill-suited kinds of file descriptor

6

We learned it the [hard way in Go](https://github.com/golang/go/blob/7fcd4a7007979e4aaa9e8893bd0088f5f28627e7/src/os/file_unix.go#L175-L208), and I hope Node.js, Julia or anything else built on top of `libuv` don't have to go through what Go has been...

Core: change TCP keepalive from ms to seconds on DragonFly BSD

3

### Proposed changes DragonFly BSD has changed the time unit for TCP keep-alive from milliseconds to seconds since 5.7 development patch 2, thus setting the keepalive options in milliseconds on...