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34efdadb4e
Problem: Nvim shows `(libuv) kqueue(): Too many open files` on macos. ref https://github.com/neovim/neovim/issues/40238 Solution: Add a healthcheck for this situation.
21 lines
576 B
Lua
21 lines
576 B
Lua
-- OS/process utils.
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local M = {}
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--- Counts (approximate) open file descriptors for this process. Works on Linux/macOS/BSD.
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---@return integer? # Number of open fds, or nil if `/dev/fd` failed (fds exhausted, or unavailable/Windows).
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function M.count_open_fds()
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local n = 0
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for _, _, err in vim.fs.dir('/dev/fd', { err = true }) do
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-- If `/dev/fd` scan failed (e.g. EMFILE when fds exhausted), count would be misleading.
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if err then
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return nil
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end
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n = n + 1
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end
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-- Discount the scan's own descriptor.
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return math.max(0, n - 1)
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end
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return M
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