move v.v to cmd/v

cmd/tools/fast/fast.v

@@ -0,0 +1,89 @@
+// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+import (
+	os
+	time
+	filepath
+)
+
+fn main() {
+	exe := os.executable()
+	dir := filepath.dir(exe)
+	vdir := filepath.dir(filepath.dir(filepath.dir(dir)))
+	if !os.exists('$vdir/v') && !os.is_dir('$vdir/vlib') {
+		println('fast.html generator needs to be located in `v/cmd/tools/fast`')
+	}
+	println('fast.html generator\n')
+	// Fetch the last commit's hash
+	println('Fetching updates...')
+	ret := os.system('git pull --rebase')
+	if ret != 0 {
+		println('failed to git pull')
+		return
+	}
+	mut commit_hash := exec('git rev-parse HEAD')
+	commit_hash = commit_hash[..7]
+	if !os.exists('table.html') {
+		os.create('table.html') or { panic(err) }
+	}
+	mut table := os.read_file('table.html') or { panic(err) }
+	// Do nothing if it's already been processed.
+	if table.contains(commit_hash) {
+		println('Commit $commit_hash has already been processed')
+		return
+	}
+	// Build an optimized V
+	println('Building vprod...')
+	exec('v -o $vdir/vprod -prod $vdir/cmd/v')
+	println('Measuring...')
+	diff1 := measure('$vdir/vprod -cc clang -o v.c $vdir/cmd/v')
+	diff2 := measure('$vdir/vprod -cc clang -o v2 $vdir/cmd/v')
+	diff3 := measure('$vdir/vprod -x64 $vdir/cmd/tools/1mil.v')
+	diff4 := measure('$vdir/vprod -cc clang $vdir/examples/hello_world.v')
+	//println('Building V took ${diff}ms')
+	commit_date := exec('git log -n1 --pretty="format:%at"')
+	message := exec('git log -n1 --pretty="format:%s"')
+	date := time.unix(commit_date.int())
+	mut out := os.create('table.html') or { panic(err) }
+	// Place the new row on top
+	table =
+'<tr>
+	<td>${date.format()}</td>
+	<td><a target=_blank href="https://github.com/vlang/v/commit/$commit_hash">$commit_hash</a></td>
+	<td>$message</td>
+	<td>${diff1}ms</td>
+	<td>${diff2}ms</td>
+	<td>${diff3}ms</td>
+	<td>${diff4}ms</td>
+</tr>\n' +
+	table.trim_space()
+	out.writeln(table)
+	out.close()
+	// Regenerate index.html
+	header := os.read_file('header.html') or { panic(err) }
+	footer := os.read_file('footer.html') or { panic(err) }
+	mut res := os.create('index.html') or { panic(err) }
+	res.writeln(header)
+	res.writeln(table)
+	res.writeln(footer)
+	res.close()
+}
+
+fn exec(s string) string {
+	e := os.exec(s) or { panic(err) }
+	return e.output
+}
+
+// returns milliseconds
+fn measure(cmd string) int {
+	println('Warming up...')
+	for i in 0..3 {
+		exec(cmd)
+	}
+	println('Building...')
+	ticks := time.ticks()
+	exec(cmd)
+	return int(time.ticks() - ticks)
+}