mraleph

// Based on Martin Kustermann's version and adding support for 
// finalization of memory mapped views.
 
import 'dart:ffi';
import 'dart:io';
import 'dart:typed_data';
import 'dart:math' as math;
 
import 'package:ffi/ffi.dart';
 

mraleph

void main() {
  final count = 1000000;
  final names = ['good', 'bad', 'whatever'];
  final tests = [_test1, _test2, _test3];
  final sw = Stopwatch();
  var repeat = 10;
  sw.start();
  while (repeat-- > 0) {
    for (var i = 0; i < tests.length; i++) {
      final name = names[i];

mraleph

+------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+--------------+
| Library                                                                                  | Method                                                                                                                                                 | Diff (Bytes) |
+------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+--------------+

mraleph

+------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+--------------+
| Library                                                                                  | Method                                                                                                                                                 | Diff (Bytes) |
+------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------+--------------+

mraleph

diff --git a/lib/recase.dart b/lib/recase.dart
index da14cec..42a1251 100644
--- a/lib/recase.dart
+++ b/lib/recase.dart
@@ -1,44 +1,94 @@
+import 'dart:typed_data';
+
 /// An instance of text to be re-cased.
 class ReCase {
-  final RegExp _upperAlphaRegex = new RegExp(r'[A-Z]');

mraleph

First create a hello.dart file with the following content.

void main(List<String> args) {
  print('Hello, World!');
}

Next we precompile this file using PRODUCT AOT compiler (equivalent of running flutter build aot --release).

mraleph

// Copyright (c) 2020, the Dart project authors.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided

mraleph

void sayHello() => print('Hello, World!');

mraleph

diff --git a/SuperPi_flutter/lib/pi_calculator.dart b/SuperPi_flutter/lib/pi_calculator.dart
index 39faf59..b519f6a 100644
--- a/SuperPi_flutter/lib/pi_calculator.dart
+++ b/SuperPi_flutter/lib/pi_calculator.dart
@@ -30,7 +30,7 @@ class PiCalculator {
     double yk1 ;
     for (int i = 0; i < k; i++) {
       yk1 = (1 - math.pow((1 - yk * yk * yk * yk),(0.25)))/(1 + math.pow((1 - yk * yk * yk * yk),(0.25)));
-      ak1 = ak * math.pow((1 + yk1), 4) - math.pow(2, 2 * i + 3) * yk1 * (1 + yk1 + yk1 * yk1);
+      ak1 = ak * math.pow((1 + yk1), 4.0) - math.pow(2.0, (2 * i + 3) + 0.0) * yk1 * (1 + yk1 + yk1 * yk1);

mraleph

#include <stdio.h>     // for fprintf()
#include <fcntl.h>
#include <unistd.h>    // for close(), read()
#include <sys/epoll.h> // for epoll_create1(), epoll_ctl(), struct epoll_event
#include <string.h>    // for strncmp
#include <errno.h>

const int kMaxEvents = 5;
const int kReadSize = 5;