7d950c0d10
Continuing improvement of SIGWINCH from PR #2308. Running SetWinEventHook without filtering for the specific PIDs has significant impact on the performance of the entire system. This PR changes the way SIGWINCH is handled. The SetWinEventHook callback now signals a separate thread, uv__tty_console_resize_watcher_thread. This thread calls uv__tty_console_signal_resize() which checks if the console was actually resized. The uv__tty_console_resize_watcher_thread makes sure to not to call the uv__tty_console_signal_resize function more than 30 times per second. The SetWinEventHook will not be installed, if the PID of the conhost.exe process that owns the console window cannot be determinated. This can happen when a 32bit libuv app is running on a 64bit Windows. For such cases PR #1408 is partially reverted - when tty reads WINDOW_BUFFER_SIZE_EVENT, it will also trigger a call to uv__tty_console_signal_resize(). This will also help when the app is running under console emulators. Documentation was also updated to reflect that. Refs: https://github.com/microsoft/terminal/issues/1811 Refs: https://github.com/microsoft/terminal/issues/410 Refs: https://github.com/libuv/libuv/pull/2308 PR-URL: https://github.com/libuv/libuv/pull/2381 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> |
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