chore: refactor benchmarking to use benchmark.nvim

perf/bootstrap.lua

@@ -0,0 +1,63 @@
+vim.opt.runtimepath:prepend("scripts/benchmark.nvim")
+vim.opt.runtimepath:prepend(".")
+
+local bm = require("benchmark")
+bm.sandbox()
+
+---@module 'oil'
+---@type oil.SetupOpts
+local setup_opts = {
+  -- columns = { "icon", "permissions", "size", "mtime" },
+}
+
+local DIR_SIZE = tonumber(vim.env.DIR_SIZE) or 100000
+local ITERATIONS = tonumber(vim.env.ITERATIONS) or 10
+local WARM_UP = tonumber(vim.env.WARM_UP) or 1
+local OUTLIERS = tonumber(vim.env.OUTLIERS) or math.floor(ITERATIONS / 10)
+local TEST_DIR = "perf/tmp/test_" .. DIR_SIZE
+
+vim.fn.mkdir(TEST_DIR, "p")
+require("benchmark.files").create_files(TEST_DIR, "file %d.txt", DIR_SIZE)
+
+function _G.jit_profile()
+  require("oil").setup(setup_opts)
+  local finish = bm.jit_profile({ filename = TEST_DIR .. "/profile.txt" })
+  bm.wait_for_user_event("OilEnter", function()
+    finish()
+  end)
+  require("oil").open(TEST_DIR)
+end
+
+function _G.flame_profile()
+  local start, stop = bm.flame_profile({
+    pattern = "oil*",
+    filename = "profile.json",
+  })
+  require("oil").setup(setup_opts)
+  start()
+  bm.wait_for_user_event("OilEnter", function()
+    stop(function()
+      vim.cmd.qall({ mods = { silent = true } })
+    end)
+  end)
+  require("oil").open(TEST_DIR)
+end
+
+function _G.benchmark()
+  require("oil").setup(setup_opts)
+  bm.run({ title = "oil.nvim", iterations = ITERATIONS, warm_up = WARM_UP }, function(callback)
+    bm.wait_for_user_event("OilEnter", callback)
+    require("oil").open(TEST_DIR)
+  end, function(times)
+    local avg = bm.avg(times, { trim_outliers = OUTLIERS })
+    local std_dev = bm.std_dev(times, { trim_outliers = OUTLIERS })
+    local lines = {
+      table.concat(vim.tbl_map(bm.format_time, times), " "),
+      string.format("Average: %s", bm.format_time(avg)),
+      string.format("Std deviation: %s", bm.format_time(std_dev)),
+    }
+
+    vim.fn.writefile(lines, "perf/tmp/benchmark.txt")
+    vim.cmd.qall({ mods = { silent = true } })
+  end)
+end