module benchmark import time import term pub const ( b_ok = term.ok_message('OK ') b_fail = term.fail_message('FAIL') b_skip = term.warn_message('SKIP') b_spent = term.ok_message('SPENT') ) pub struct Benchmark { pub mut: bench_timer time.StopWatch verbose bool no_cstep bool step_timer time.StopWatch ntotal int nok int nfail int nskip int nexpected_steps int cstep int bok string bfail string } // new_benchmark returns a `Benchmark` instance on the stack. pub fn new_benchmark() Benchmark { return Benchmark{ bench_timer: time.new_stopwatch() verbose: true } } // new_benchmark_no_cstep returns a new `Benchmark` instance with step counting disabled. pub fn new_benchmark_no_cstep() Benchmark { return Benchmark{ bench_timer: time.new_stopwatch() verbose: true no_cstep: true } } // new_benchmark_pointer returns a new `Benchmark` instance allocated on the heap. // This is useful for long-lived use of `Benchmark` instances. pub fn new_benchmark_pointer() &Benchmark { return &Benchmark{ bench_timer: time.new_stopwatch() verbose: true } } // set_total_expected_steps sets the the total amount of steps the benchmark is expected to take. pub fn (mut b Benchmark) set_total_expected_steps(n int) { b.nexpected_steps = n } // stop stops the internal benchmark timer. pub fn (mut b Benchmark) stop() { b.bench_timer.stop() } // step increases the step count by 1 and restarts the internal timer. pub fn (mut b Benchmark) step() { b.step_timer.restart() if !b.no_cstep { b.cstep++ } } // fail increases the fail count by 1 and stops the internal timer. pub fn (mut b Benchmark) fail() { b.step_timer.stop() b.ntotal++ b.nfail++ } // ok increases the ok count by 1 and stops the internal timer. pub fn (mut b Benchmark) ok() { b.step_timer.stop() b.ntotal++ b.nok++ } // skip increases the skip count by 1 and stops the internal timer. pub fn (mut b Benchmark) skip() { b.step_timer.stop() b.ntotal++ b.nskip++ } // fail_many increases the fail count by `n` and stops the internal timer. pub fn (mut b Benchmark) fail_many(n int) { b.step_timer.stop() b.ntotal += n b.nfail += n } // ok_many increases the ok count by `n` and stops the internal timer. pub fn (mut b Benchmark) ok_many(n int) { b.step_timer.stop() b.ntotal += n b.nok += n } // neither_fail_nor_ok stops the internal timer. pub fn (mut b Benchmark) neither_fail_nor_ok() { b.step_timer.stop() } // start returns a new, running, instance of `Benchmark`. // This is a shorthand for calling `new_benchmark().step()`. pub fn start() Benchmark { mut b := new_benchmark() b.step() return b } // measure prints the current time spent doing `label`, since the benchmark was started. pub fn (mut b Benchmark) measure(label string) i64 { b.ok() res := b.step_timer.elapsed().microseconds() println(b.step_message_with_label(benchmark.b_spent, 'in $label')) b.step() return res } // step_message_with_label_and_duration returns a string describing the current step. pub fn (b &Benchmark) step_message_with_label_and_duration(label string, msg string, sduration time.Duration) string { timed_line := b.tdiff_in_ms(msg, sduration.microseconds()) if b.nexpected_steps > 1 { mut sprogress := '' if b.nexpected_steps < 10 { sprogress = if b.no_cstep { 'TMP1/${b.nexpected_steps:1d}' } else { '${b.cstep:1d}/${b.nexpected_steps:1d}' } } else if b.nexpected_steps >= 10 && b.nexpected_steps < 100 { sprogress = if b.no_cstep { 'TMP2/${b.nexpected_steps:2d}' } else { '${b.cstep:2d}/${b.nexpected_steps:2d}' } } else if b.nexpected_steps >= 100 && b.nexpected_steps < 1000 { sprogress = if b.no_cstep { 'TMP3/${b.nexpected_steps:3d}' } else { '${b.cstep:3d}/${b.nexpected_steps:3d}' } } else { sprogress = if b.no_cstep { 'TMP4/${b.nexpected_steps:4d}' } else { '${b.cstep:4d}/${b.nexpected_steps:4d}' } } return '${label:-5s} [$sprogress] $timed_line' } return '${label:-5s}$timed_line' } // step_message_with_label returns a string describing the current step using current time as duration. pub fn (b &Benchmark) step_message_with_label(label string, msg string) string { return b.step_message_with_label_and_duration(label, msg, b.step_timer.elapsed()) } // step_message returns a string describing the current step. pub fn (b &Benchmark) step_message(msg string) string { return b.step_message_with_label('', msg) } // step_message_ok returns a string describing the current step with an standard "OK" label. pub fn (b &Benchmark) step_message_ok(msg string) string { return b.step_message_with_label(benchmark.b_ok, msg) } // step_message_fail returns a string describing the current step with an standard "FAIL" label. pub fn (b &Benchmark) step_message_fail(msg string) string { return b.step_message_with_label(benchmark.b_fail, msg) } // step_message_skip returns a string describing the current step with an standard "SKIP" label. pub fn (b &Benchmark) step_message_skip(msg string) string { return b.step_message_with_label(benchmark.b_skip, msg) } // total_message returns a string with total summary of the benchmark run. pub fn (b &Benchmark) total_message(msg string) string { the_label := term.colorize(term.gray, msg) mut tmsg := '${term.colorize(term.bold, 'Summary for $the_label:')} ' if b.nfail > 0 { tmsg += term.colorize(term.bold, term.colorize(term.red, '$b.nfail failed')) + ', ' } if b.nok > 0 { tmsg += term.colorize(term.bold, term.colorize(term.green, '$b.nok passed')) + ', ' } if b.nskip > 0 { tmsg += term.colorize(term.bold, term.colorize(term.yellow, '$b.nskip skipped')) + ', ' } tmsg += '$b.ntotal total. ${term.colorize(term.bold, 'Runtime:')} ${b.bench_timer.elapsed().microseconds() / 1000} ms.\n' return tmsg } // total_duration returns the duration in ms. pub fn (b &Benchmark) total_duration() i64 { return b.bench_timer.elapsed().milliseconds() } // tdiff_in_ms prefixes `s` with a time difference calculation. fn (b &Benchmark) tdiff_in_ms(s string, tdiff i64) string { if b.verbose { return '${f64(tdiff) / 1000.0:9.3f} ms $s' } return s }