public void multi_threaded_locale_access_should_be_okay()
{
ParallelEnumerable.Range(0, 9999)
.Select(i => new Name("nl")).ToList();
}
private static IEnumerable <Labeled <Func <int, int, IEnumerable <int> > > > Expanders()
{
yield return(Labeled.Label("Array", (Func <int, int, IEnumerable <int> >)((start, count) => Enumerable.Range(start * count, count).ToArray())));
yield return(Labeled.Label("Enumerable.Range", (Func <int, int, IEnumerable <int> >)((start, count) => Enumerable.Range(start * count, count))));
yield return(Labeled.Label("ParallelEnumerable.Range", (Func <int, int, IEnumerable <int> >)((start, count) => ParallelEnumerable.Range(start * count, count).AsOrdered().Select(x => x))));
}
public static void Union_ArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => ((ParallelQuery <int>)null).Union(ParallelEnumerable.Range(0, 1)));
Assert.Throws <ArgumentNullException>(() => ParallelEnumerable.Range(0, 1).Union(null));
Assert.Throws <ArgumentNullException>(() => ((ParallelQuery <int>)null).Union(ParallelEnumerable.Range(0, 1), EqualityComparer <int> .Default));
Assert.Throws <ArgumentNullException>(() => ParallelEnumerable.Range(0, 1).Union(null, EqualityComparer <int> .Default));
}
public static int getPrimeCount(int min, int count)
{
return(ParallelEnumerable.Range(min, count).Count(n =>
Enumerable.Range(2, (int)Math.Sqrt(n) - 1).All(i =>
n % i > 0)));
}
public static void Intersect_ArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("first", () => ((ParallelQuery <int>)null).Intersect(ParallelEnumerable.Range(0, 1)));
AssertExtensions.Throws <ArgumentNullException>("second", () => ParallelEnumerable.Range(0, 1).Intersect(null));
AssertExtensions.Throws <ArgumentNullException>("first", () => ((ParallelQuery <int>)null).Intersect(ParallelEnumerable.Range(0, 1), EqualityComparer <int> .Default));
AssertExtensions.Throws <ArgumentNullException>("second", () => ParallelEnumerable.Range(0, 1).Intersect(null, EqualityComparer <int> .Default));
}
public static void Zip_ArgumentNullException()
{
Assert.Throws <ArgumentNullException>(() => ((ParallelQuery <int>)null).Zip(ParallelEnumerable.Range(0, 1), (x, y) => x));
Assert.Throws <ArgumentNullException>(() => ParallelEnumerable.Range(0, 1).Zip(null, (Func <int, int, int>)((x, y) => x)));
Assert.Throws <ArgumentNullException>(() => ParallelEnumerable.Range(0, 1).Zip(ParallelEnumerable.Range(0, 1), (Func <int, int, int>)null));
}
public static void ForAll_AggregateException()
{
AssertThrows.Wrapped <DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).ForAll(x => { throw new DeliberateTestException(); }));
AssertThrows.Wrapped <DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).Select((Func <int, int>)(x => { throw new DeliberateTestException(); })).ForAll(x => { }));
}
public static void Concat_NotSupportedException()
{
#pragma warning disable 618
Assert.Throws <NotSupportedException>(() => ParallelEnumerable.Range(0, 1).Concat(Enumerable.Range(0, 1)));
#pragma warning restore 618
}
public static void Concat_ArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("first", () => ((ParallelQuery <int>)null).Concat(ParallelEnumerable.Range(0, 1)));
AssertExtensions.Throws <ArgumentNullException>("second", () => ParallelEnumerable.Range(0, 1).Concat(null));
}
public static void SequenceEqual_OperationCanceledException()
{
AssertThrows.EventuallyCanceled((source, canceler) => source.OrderBy(x => x).SequenceEqual(ParallelEnumerable.Range(0, 128).AsOrdered(), new CancelingEqualityComparer <int>(canceler)));
AssertThrows.EventuallyCanceled((source, canceler) => ParallelEnumerable.Range(0, 128).AsOrdered().SequenceEqual(source.OrderBy(x => x), new CancelingEqualityComparer <int>(canceler)));
}
public static void SequenceEqual_AggregateException_Wraps_OperationCanceledException()
{
AssertThrows.OtherTokenCanceled((source, canceler) => source.OrderBy(x => x).SequenceEqual(ParallelEnumerable.Range(0, 128).AsOrdered(), new CancelingEqualityComparer <int>(canceler)));
AssertThrows.OtherTokenCanceled((source, canceler) => ParallelEnumerable.Range(0, 128).AsOrdered().SequenceEqual(source.OrderBy(x => x), new CancelingEqualityComparer <int>(canceler)));
AssertThrows.SameTokenNotCanceled((source, canceler) => source.OrderBy(x => x).SequenceEqual(ParallelEnumerable.Range(0, 128).AsOrdered(), new CancelingEqualityComparer <int>(canceler)));
AssertThrows.SameTokenNotCanceled((source, canceler) => ParallelEnumerable.Range(0, 128).AsOrdered().SequenceEqual(source.OrderBy(x => x), new CancelingEqualityComparer <int>(canceler)));
}
public static void RunPlinqModesTests()
{
// I would assume that this gets the number of processors (ie. Environment.ProcessorCount)
// but since we are trying to exclude dependencies that aren't part of the contract, we
// can't use System.Runtime.Extensions. So we had to remove this check.
// if (SchedulingProxy.GetDefaultDegreeOfParallelism() == 1)
// {
// Console.WriteLine(" - Test does not apply to the DOP=1 case.");
// return true;
// }
Action <ParallelExecutionMode, Verifier>[] hardQueries =
{
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).Where(x => true).TakeWhile((x, i) => true).ToArray(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).Where(x => true).TakeWhile((x, i) => true).Iterate(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Where(x => true).Select(x => verifier.Verify(x)).ElementAt(5),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Where(x => true).Select((x, i) => verifier.Verify(x)).Iterate(),
};
Action <ParallelExecutionMode, Verifier>[] easyQueries =
{
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.TakeWhile(x => true).Select(x => verifier.Verify(x)).ToArray(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.TakeWhile(x => true).Select(x => verifier.Verify(x)).Iterate(),
(mode, verifier) => Enumerable.Range(0, 1000).ToArray().AsParallel()
.Select(x => verifier.Verify(x)).Take(100).WithExecutionMode(mode).ToArray(),
(mode, verifier) => Enumerable.Range(0, 1000).ToArray().AsParallel().WithExecutionMode(mode)
.Take(100).Select(x => verifier.Verify(x)).Iterate(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).ElementAt(5),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).SelectMany((x, i) => Enumerable.Repeat(1, 2)).Iterate(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).SelectMany((x, i) => Enumerable.Repeat(1, 2)).Iterate(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().WithExecutionMode(mode).AsUnordered()
.Select(x => verifier.Verify(x)).Select((x, i) => x).Iterate(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().WithExecutionMode(mode).AsUnordered().Where(x => true).Select(x => verifier.Verify(x)).First(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).OrderBy(x => x).ToArray(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).OrderBy(x => x).Iterate(),
(mode, verifier) => Enumerable.Range(0, 1000).AsParallel().AsOrdered().WithExecutionMode(mode)
.Where(x => true).Select(x => verifier.Verify(x))
.Concat(Enumerable.Range(0, 1000).AsParallel().AsOrdered().Where(x => true))
.ToList(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Where(x => true).Select(x => verifier.Verify(x)).Take(100).ToArray(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Where(x => true).Select(x => verifier.Verify(x)).Take(100).Iterate(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).TakeWhile(x => true).ToArray(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Select(x => verifier.Verify(x)).TakeWhile(x => true).Iterate(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000)
.OrderBy(x => x).Select(x => verifier.Verify(x)).WithExecutionMode(mode).ElementAt(5),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.OrderBy(x => x).Select((x, i) => verifier.Verify(x)).Iterate(),
(mode, verifier) => ParallelEnumerable.Range(0, 1000).WithExecutionMode(mode)
.Where(x => true).Select(x => verifier.Verify(x)).OrderBy(x => x).Take(10000).Iterate(),
};
// Verify that all queries in 'easyQueries' run in parallel in default mode
for (int i = 0; i < easyQueries.Length; i++)
{
Verifier verifier = new ParVerifier();
easyQueries[i].Invoke(ParallelExecutionMode.Default, verifier);
if (!verifier.Passed)
{
Assert.True(false, string.Format("Easy query {0} expected to run in parallel in default mode", i));
}
}
// Verify that all queries in 'easyQueries' always run in forced mode
for (int i = 0; i < easyQueries.Length; i++)
{
Verifier verifier = new ParVerifier();
easyQueries[i].Invoke(ParallelExecutionMode.ForceParallelism, verifier);
if (!verifier.Passed)
{
Assert.True(false, string.Format("Easy query {0} expected to run in parallel in force-parallelism mode", i));
}
}
// Verify that all queries in 'easyQueries' always run in forced mode
for (int i = 0; i < hardQueries.Length; i++)
{
Verifier verifier = new ParVerifier();
hardQueries[i].Invoke(ParallelExecutionMode.ForceParallelism, verifier);
if (!verifier.Passed)
{
Assert.True(false, string.Format("Hard query {0} expected to run in parallel in force-parallelism mode", i));
}
}
}
static void Main(string[] args)
{
var customers = new [] {
new Customer {
ID = 1, FirstName = "Sandeep", LastName = "Ramani"
},
new Customer {
ID = 2, FirstName = "Dharmik", LastName = "Chotaliya"
},
new Customer {
ID = 3, FirstName = "Nisar", LastName = "Kalia"
},
new Customer {
ID = 4, FirstName = "Ravi", LastName = "Mapara"
},
new Customer {
ID = 5, FirstName = "Hardik", LastName = "Mistry"
},
new Customer {
ID = 6, FirstName = "Sandy", LastName = "Ramani"
},
new Customer {
ID = 7, FirstName = "Jigar", LastName = "Shah"
},
new Customer {
ID = 8, FirstName = "Kaushal", LastName = "Parik"
},
new Customer {
ID = 9, FirstName = "Abhishek", LastName = "Swarnker"
},
new Customer {
ID = 10, FirstName = "Sanket", LastName = "Patel"
},
new Customer {
ID = 11, FirstName = "Dinesh", LastName = "Prajapati"
},
new Customer {
ID = 12, FirstName = "Jayesh", LastName = "Patel"
},
new Customer {
ID = 13, FirstName = "Nimesh", LastName = "Mishra"
},
new Customer {
ID = 14, FirstName = "Shiva", LastName = "Reddy"
},
new Customer {
ID = 15, FirstName = "Jasmin", LastName = "Malviya"
},
new Customer {
ID = 16, FirstName = "Haresh", LastName = "Bhanderi"
},
new Customer {
ID = 17, FirstName = "Ankit", LastName = "Ramani"
},
new Customer {
ID = 18, FirstName = "Sanket", LastName = "Shah"
},
new Customer {
ID = 19, FirstName = "Amit", LastName = "Shah"
},
new Customer {
ID = 20, FirstName = "Nilesh", LastName = "Soni"
}
};
var results = from c in customers
where c.FirstName.StartsWith("San")
select c;
//使用Parallel并行查询
var resultsUserParallel = from c in customers.AsParallel()
where c.FirstName.StartsWith("San")
select c;
//对并行查询的结果排序，AsOrdered影响性能，最好不用
var resultsUserAsOrdered = from c in customers.AsParallel().AsOrdered()
where c.FirstName.StartsWith("San")
select c;
//强制使用Parallel并行查询，如果让AsParallel自己决定的话
//有可能它会选择原来的Linq的执行方式
var resultsForceParallelism = from c in customers.AsParallel().WithExecutionMode(ParallelExecutionMode.ForceParallelism)
where c.FirstName.StartsWith("San")
select c;
//确定并行执行使用CPU的最多的数量
var resultsDegreeOfParallelism = from c in customers.AsParallel().WithDegreeOfParallelism(2)
where c.FirstName.StartsWith("San")
select c;
//随机产生一个有序的数
IEnumerable <int> evens = ((ParallelQuery <int>)ParallelEnumerable.Range(0, 50000))
.Where(i => i % 2 == 0)
.Select(i => i).ToList();
//使用并行产生重复的数字ParallelQuery<TResult>
int sum = ParallelEnumerable.Repeat(2, 50000).Select(i => i).Sum();
Console.WriteLine(sum);
Console.ReadKey();
}
public static int GetPrimesCount(int start, int count)
{
return(ParallelEnumerable.Range(start, count).Count(n =>
Enumerable.Range(2, (int)Math.Sqrt(n) - 1).All(i => n % i > 0)));
}
public Task <int> GetPrimesCountAsync(int start, int count)
{
return(Task.Run(() =>
ParallelEnumerable.Range(start, count).Count(n =>
Enumerable.Range(2, (int)Math.Sqrt(n) - 1).All(i => n % i > 0))));
}
public static void Concat_UnionSources_PrematureMerges()
{
const int ElementCount = 2048;
ParallelQuery <int> leftQuery = ParallelEnumerable.Range(0, ElementCount / 4).Union(ParallelEnumerable.Range(ElementCount / 4, ElementCount / 4));
ParallelQuery <int> rightQuery = ParallelEnumerable.Range(2 * ElementCount / 4, ElementCount / 4).Union(ParallelEnumerable.Range(3 * ElementCount / 4, ElementCount / 4));
var results = new HashSet <int>(leftQuery.Concat(rightQuery));
Assert.Equal(ElementCount, results.Count);
}
public static void Zip_NotSupportedException()
{
#pragma warning disable 618
Assert.Throws <NotSupportedException>(() => ParallelEnumerable.Range(0, 1).Zip(Enumerable.Range(0, 1), (x, y) => x));
#pragma warning restore 618
}
public static void Single_AggregateException()
{
AssertThrows.Wrapped <DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).Single(x => { throw new DeliberateTestException(); }));
AssertThrows.Wrapped <DeliberateTestException>(() => ParallelEnumerable.Range(0, 1).SingleOrDefault(x => { throw new DeliberateTestException(); }));
}
public static void SequenceEqual_AggregateException(Labeled <Operation> source, Labeled <Operation> operation)
{
// Sequence equal double wraps queries that throw.
ThrowsWrapped(() => operation.Item(DefaultStart, DefaultSize, source.Item).SequenceEqual(ParallelEnumerable.Range(DefaultStart, DefaultSize).AsOrdered()));
ThrowsWrapped(() => ParallelEnumerable.Range(DefaultStart, DefaultSize).AsOrdered().SequenceEqual(operation.Item(DefaultStart, DefaultSize, source.Item)));
}
public static void Single_AllMatch(int count)
{
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, count).Single(x => true));
}
public static void ForAll_ArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("source", () => ((ParallelQuery <int>)null).ForAll(x => { }));
AssertExtensions.Throws <ArgumentNullException>("action", () => ParallelEnumerable.Range(0, 1).ForAll(null));
}
public static void WithExecutionMode_Multiple(ParallelExecutionMode first, ParallelExecutionMode second)
{
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithExecutionMode(first).WithExecutionMode(second));
}
int GetPrimesCount(int start, int count)
{
var items = ParallelEnumerable.Range(start, count).Count(item => Enumerable.Range(2, (int)Math.Sqrt(item) - 1).All(i => item % i > 0));
return(items);
}
public static void DegreeOfParallelism_Multiple()
{
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 2).WithDegreeOfParallelism(2).WithDegreeOfParallelism(2));
}
private static ParallelQuery <int> GenerateMD5InputData()
{
return(ParallelEnumerable.Range(1, NUM_MD5_HASHES));
}
private static void RunScenario(Scenario scenario, int threadCount)
{
Console.WriteLine("Executing Scenario: '{0}' with: '{1}' threads over: '{2:N0}' iterations.",
scenario,
threadCount,
ITERATION_COUNT);
Func <string> idGenerator;
switch (scenario)
{
case Scenario.Unsafe:
idGenerator = IDGeneratorService.GetNextIDUnsafe;
break;
case Scenario.WithLocking:
idGenerator = IDGeneratorService.GetNextIDWithLocking;
break;
case Scenario.ThreadLocal:
idGenerator = IDGeneratorService.GetNextIDThreadLocal;
break;
case Scenario.ThreadStatic:
idGenerator = IDGeneratorService.GetNextIDThreadStatic;
break;
case Scenario.NewBuffer:
idGenerator = IDGeneratorService.GetNextIDNewBuffer;
break;
case Scenario.SpinLock:
idGenerator = IDGeneratorService.GetNextIDSpinLock;
break;
#if NETCOREAPP2_1
case Scenario.Span:
idGenerator = IDGeneratorService.GetNextIDSpan;
break;
#endif
default:
throw new ArgumentOutOfRangeException(nameof(scenario), scenario, null);
}
var sw = Stopwatch.StartNew();
ParallelEnumerable
.Range(1, ITERATION_COUNT)
.WithDegreeOfParallelism(threadCount)
.WithExecutionMode(ParallelExecutionMode.ForceParallelism)
.ForAll(_ => idGenerator());
sw.Stop();
using (var process = Process.GetCurrentProcess())
{
Console.WriteLine(" - Execution time: {0}\r\n - Gen-0: {1}, Gen-1: {2}, Gen-2: {3}\r\n - Peak WrkSet: {4:N0}",
sw.Elapsed.ToString(),
GC.CollectionCount(0),
GC.CollectionCount(1),
GC.CollectionCount(2),
process.PeakWorkingSet64);
}
}
// Should not get the same setting from both operands.
public static void Union_NoDuplicateSettings()
{
CancellationToken t = new CancellationTokenSource().Token;
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithCancellation(t).Union(ParallelEnumerable.Range(0, 1).WithCancellation(t)));
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithDegreeOfParallelism(1).Union(ParallelEnumerable.Range(0, 1).WithDegreeOfParallelism(1)));
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithExecutionMode(ParallelExecutionMode.Default).Union(ParallelEnumerable.Range(0, 1).WithExecutionMode(ParallelExecutionMode.Default)));
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithMergeOptions(ParallelMergeOptions.Default).Union(ParallelEnumerable.Range(0, 1).WithMergeOptions(ParallelMergeOptions.Default)));
}
public static void Join_ArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("outer", () => ((ParallelQuery <int>)null).Join(ParallelEnumerable.Range(0, 1), i => i, i => i, (i, j) => i));
AssertExtensions.Throws <ArgumentNullException>("inner", () => ParallelEnumerable.Range(0, 1).Join((ParallelQuery <int>)null, i => i, i => i, (i, j) => i));
AssertExtensions.Throws <ArgumentNullException>("outerKeySelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), (Func <int, int>)null, i => i, (i, j) => i));
AssertExtensions.Throws <ArgumentNullException>("innerKeySelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), i => i, (Func <int, int>)null, (i, j) => i));
AssertExtensions.Throws <ArgumentNullException>("resultSelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), i => i, i => i, (Func <int, int, int>)null));
AssertExtensions.Throws <ArgumentNullException>("outer", () => ((ParallelQuery <int>)null).Join(ParallelEnumerable.Range(0, 1), i => i, i => i, (i, j) => i, EqualityComparer <int> .Default));
AssertExtensions.Throws <ArgumentNullException>("inner", () => ParallelEnumerable.Range(0, 1).Join((ParallelQuery <int>)null, i => i, i => i, (i, j) => i, EqualityComparer <int> .Default));
AssertExtensions.Throws <ArgumentNullException>("outerKeySelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), (Func <int, int>)null, i => i, (i, j) => i, EqualityComparer <int> .Default));
AssertExtensions.Throws <ArgumentNullException>("innerKeySelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), i => i, (Func <int, int>)null, (i, j) => i, EqualityComparer <int> .Default));
AssertExtensions.Throws <ArgumentNullException>("resultSelector", () => ParallelEnumerable.Range(0, 1).Join(ParallelEnumerable.Range(0, 1), i => i, i => i, (Func <int, int, int>)null, EqualityComparer <int> .Default));
}
public static void WithMergeOptions_Multiple(ParallelMergeOptions first, ParallelMergeOptions second)
{
Assert.Throws <InvalidOperationException>(() => ParallelEnumerable.Range(0, 1).WithMergeOptions(first).WithMergeOptions(second));
}
public static void Sum_Long_SomeNull(int count)
{
Assert.Equal(Functions.SumRange(0, count / 2), ParallelEnumerable.Range(0, count).Select(x => x < count / 2 ? (long?)x : null).Sum());
Assert.Equal(-Functions.SumRange(0, count / 2), ParallelEnumerable.Range(0, count).Sum(x => x < count / 2 ? -(long?)x : null));
}