private static void testRegexMatches(string input, string pattern, RegexOptions options, int times)
{
Console.WriteLine("Pattern: {0}", pattern.ShowVerbatim());
if (options != RegexOptions.None)
{
Console.WriteLine("Options: [{0}]", options.ToString());
}
MemoryProfiler memoryProfiler;
if (useMemoryProfiler)
{
memoryProfiler = MemoryProfiler.StartNew();
}
Stopwatch stopwatch = Stopwatch.StartNew();
MatchCollection2 matches = null;
//Msoft.MatchCollection matches = null;
for (int i = 0; i < times; i++)
{
matches = new Regex2(pattern, AlgorithmType.Backtracking, options).Matches(input);
}
//matches = new Msoft.Regex(pattern, RegexAssert.ToMsoftRegexOptions(options)).Matches(input);
if (useMemoryProfiler)
{
memoryProfiler.Reset();
}
Console.WriteLine("Matches: {0:#,##0}", matches.Count);
//string v;
//foreach (var m in matches.Cast<Match2>())
////foreach (var m in matches.Cast<Msoft.Match>())
// v = m.Value;
decimal elapsed = ((decimal)stopwatch.ElapsedMilliseconds) / 1000;
if (useMemoryProfiler)
{
long deltaBefore = memoryProfiler.DeltaValue;
memoryProfiler.CollectGC();
long deltaAfter = memoryProfiler.DeltaValue;
if (matches.Count > 0)
{
Console.WriteLine("Last: {0:#,##0} chars", matches[matches.Count - 1].Value.Length);
}
Console.WriteLine("Memory: {0,10:#,##0} bytes", deltaBefore);
Console.WriteLine("AfterGC: {0,10:#,##0} bytes", deltaAfter);
}
Console.WriteLine("Time: {0:#0.000} sec.\n", elapsed);
}
public static void MatchCollections()
{
MemoryProfiler memoryProfiler = MemoryProfiler.StartNew();
int itemCount = 10000000;
MatchCollection2 matches1 = Factory.CreateMatchCollection(Enumerable.Range(1, itemCount)
.Select(i => Factory.CreateMatch(i, i, "x")));
memoryProfiler.CollectGC();
Console.WriteLine("Matches: {0:#,##0}", matches1.Count);
displayMemoryProfiler(memoryProfiler, itemCount);
// 41 bytes/match (itemCount = 10,000,000)
// 36.9 bytes/match (itemCount = 13,000,000)
memoryProfiler.Reset();
Match2[] matches2 = Enumerable.Range(1, itemCount)
.Select(i => Factory.CreateMatch(i, i, "x"))
.ToArray();
memoryProfiler.CollectGC();
Console.WriteLine("Matches: {0:#,##0}", matches2.Length);
displayMemoryProfiler(memoryProfiler, itemCount);
// 36 bytes/match (itemCount = 10,000,000)
// 36 bytes/match (itemCount = 13,000,000)
memoryProfiler.Reset();
List <Match2> matches3 = Enumerable.Range(1, itemCount)
.Select(i => Factory.CreateMatch(i, i, "x"))
.ToList();
memoryProfiler.CollectGC();
Console.WriteLine("Matches: {0:#,##0}", matches3.Count);
displayMemoryProfiler(memoryProfiler, itemCount);
// 38.7 bytes/match (itemCount = 10,000,000)
// 37.2 bytes/match (itemCount = 13,000,000)
memoryProfiler.Reset();
List <int> ints1 = Enumerable.Range(1, itemCount)
.ToList();
memoryProfiler.CollectGC();
Console.WriteLine("Ints: {0:#,##0}", ints1.Count);
displayMemoryProfiler(memoryProfiler, itemCount);
// 6.7 bytes/match (itemCount = 10,000,000)
// 5.2 bytes/match (itemCount = 13,000,000)
memoryProfiler.Reset();
int[] ints2 = Enumerable.Range(1, itemCount)
.ToArray();
memoryProfiler.CollectGC();
Console.WriteLine("Ints: {0:#,##0}", ints2.Length);
displayMemoryProfiler(memoryProfiler, itemCount);
// 4 bytes/match (itemCount = 10,000,000)
// 4 bytes/match (itemCount = 13,000,000)
}
