Inherits System::Object.

Public Member Functions
	ThreadPool (const ThreadPool &)=delete
	No copying. More...

void	operator= (const ThreadPool &)=delete
	No copying. More...

Public Member Functions inherited from System::Object
ASPOSECPP_SHARED_API	Object ()
	Creates object. Initializes all internal data structures. More...

virtual ASPOSECPP_SHARED_API	~Object ()
	Destroys object. Frees all internal data structures. More...

ASPOSECPP_SHARED_API	Object (Object const &x)
	Copy constructor. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...

Object &	operator= (Object const &x)
	Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...

Object *	SharedRefAdded ()
	Increments shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

int	SharedRefRemovedSafe ()
	Decrements and returns shared reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

int	RemovedSharedRefs (int count)
	Decreases shared reference count by specified value. More...

Detail::SmartPtrCounter *	WeakRefAdded ()
	Increments weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

void	WeakRefRemoved ()
	Decrements weak reference count. Shouldn't be called directly; instead, use smart pointers or ThisProtector. More...

Detail::SmartPtrCounter *	GetCounter ()
	Gets reference counter data structure associated with the object. More...

int	SharedCount () const
	Gets current value of shared reference counter. More...

ASPOSECPP_SHARED_API void	Lock ()
	Implements C# lock() statement locking. Call directly or use LockContext sentry object. More...

ASPOSECPP_SHARED_API void	Unlock ()
	Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. More...

virtual ASPOSECPP_SHARED_API bool	Equals (ptr obj)
	Compares objects using C# Object.Equals semantics. More...

virtual ASPOSECPP_SHARED_API int32_t	GetHashCode () const
	Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. More...

virtual ASPOSECPP_SHARED_API String	ToString () const
	Analog of C# Object.ToString() method. Enables converting custom objects to string. More...

virtual ASPOSECPP_SHARED_API ptr	MemberwiseClone () const
	Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. More...

virtual ASPOSECPP_SHARED_API const TypeInfo &	GetType () const
	Gets actual type of object. Analog of C# System.Object.GetType() call. More...

virtual ASPOSECPP_SHARED_API bool	Is (const TypeInfo &targetType) const
	Check if object represents an instance of type described by targetType. Analog of C# 'is' operator. More...

virtual ASPOSECPP_SHARED_API void	SetTemplateWeakPtr (uint32_t argument)
	Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. More...

virtual ASPOSECPP_SHARED_API bool	FastCast (const Details::FastRttiBase &helper, void **out_ptr) const
	For internal purposes only. More...

template<>
bool	Equals (float const &objA, float const &objB)

template<>
bool	Equals (double const &objA, double const &objB)

template<>
bool	ReferenceEquals (String const &str, std::nullptr_t)

template<>
bool	ReferenceEquals (String const &str1, String const &str2)

Static Public Member Functions
static ASPOSECPP_SHARED_API ThreadPoolImpl &	GetInstance ()

static ASPOSECPP_SHARED_API bool	QueueUserWorkItem (WaitCallback callback)

static ASPOSECPP_SHARED_API bool	QueueUserWorkItem (WaitCallback callback, const System::SharedPtr< System::Object > &state)

static ASPOSECPP_SHARED_API void	GetAvailableThreads (int &wt, int &cpt)

static ASPOSECPP_SHARED_API void	GetMaxThreads (int &wt, int &cpt)

static ASPOSECPP_SHARED_API void	GetMinThreads (int &wt, int &cpt)

static ASPOSECPP_SHARED_API bool	SetMaxThreads (int wt, int cpt)

static ASPOSECPP_SHARED_API bool	SetMinThreads (int wt, int cpt)

static ASPOSECPP_SHARED_API void	JoinAllThreads ()
	Joins all owned threads. Waits infinitely. More...

Static Public Member Functions inherited from System::Object
static bool	ReferenceEquals (ptr const &objA, ptr const &objB)
	Compares objects by reference. More...

template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type	ReferenceEquals (T const &objA, T const &objB)
	Compares objects by reference. More...

template<typename T >
static std::enable_if<!IsSmartPtr< T >::value, bool >::type	ReferenceEquals (T const &objA, std::nullptr_t)
	Reference-compares value type object with nullptr. More...

template<typename T1 , typename T2 >
static std::enable_if< IsSmartPtr< T1 >::value &&IsSmartPtr< T2 >::value, bool >::type	Equals (T1 const &objA, T2 const &objB)
	Compares reference type objects in C# style. More...

template<typename T1 , typename T2 >
static std::enable_if<!IsSmartPtr< T1 >::value &&!IsSmartPtr< T2 >::value, bool >::type	Equals (T1 const &objA, T2 const &objB)
	Compares value type objects in C# style. More...

static const TypeInfo &	Type ()
	Implements C# typeof(System.Object) construct. More...

Additional Inherited Members
Public Types inherited from System::Object
typedef SmartPtr< Object >	ptr
	Alias for smart pointer type. More...

Detailed Description

Thread pool API allowing it pushing jobs into queue to be read by pool of worker threads. This is a static type with no instance services. You should never create instances of it by any means.

   #include "system/threading/thread_pool.h"
   #include "system/threading/thread.h"
   #include "system/object.h"
   #include "system/smart_ptr.h"
   #include <iostream>
   #include <mutex>
   #include <string>
   #include <thread>
  
   const std::string &BooleanToString(bool value)
   {
     static const std::string True = "True";
     static const std::string False = "False";
  
     return value ? True : False;
   }
  
   int main()
   {
     using namespace System::Threading;
     std::mutex m;
  
     const auto threadsCount = std::thread::hardware_concurrency();
  
     for (unsigned int i = 0; i < threadsCount; ++i)
     {
       ThreadPool::QueueUserWorkItem([&m](System::SharedPtr<System::Object> object) -> void {
         auto thread = Thread::get_CurrentThread();
         m.lock();
         std::cout << "Background: " << BooleanToString(thread->get_IsBackground()) <<
           ", Thread pool: " << BooleanToString(thread->get_IsThreadPoolThread()) <<
           ", Thread ID: " << thread->get_ManagedThreadId() << std::endl;
         m.unlock();
       });
     }
  
     ThreadPool::JoinAllThreads();
  
     return 0;
   }
   /*
*  This code example produces the following output:
*  Background: True, Thread pool: True, Thread ID: 1
*  Background: True, Thread pool: True, Thread ID: 3
*  Background: True, Thread pool: True, Thread ID: 5
*  Background: True, Thread pool: True, Thread ID: 6
*  Background: True, Thread pool: True, Thread ID: 9
*  Background: True, Thread pool: True, Thread ID: 1
*  Background: True, Thread pool: True, Thread ID: 7
*  Background: True, Thread pool: True, Thread ID: 2
*  Background: True, Thread pool: True, Thread ID: 4
*  Background: True, Thread pool: True, Thread ID: 3
*  Background: True, Thread pool: True, Thread ID: 12
*  Background: True, Thread pool: True, Thread ID: 8
*  Background: True, Thread pool: True, Thread ID: 5
*  Background: True, Thread pool: True, Thread ID: 6
*  Background: True, Thread pool: True, Thread ID: 16
*  Background: True, Thread pool: True, Thread ID: 11
   */

Constructor & Destructor Documentation

◆ ThreadPool()

System::Threading::ThreadPool::ThreadPool ( const ThreadPool & )

delete

No copying.

Member Function Documentation

◆ GetAvailableThreads()

static ASPOSECPP_SHARED_API void System::Threading::ThreadPool::GetAvailableThreads	(	int &	wt,
		int &	cpt
	)

static

Gets number of available threads.

Parameters

wt	Reference to variable to store number of awailable worker threads.
cpt	Reference to variable to store number of awailable IO threads.

◆ GetInstance()

static ASPOSECPP_SHARED_API ThreadPoolImpl& System::Threading::ThreadPool::GetInstance ( )

static

Implementation instance that holds list of jobs and other parameters.

Returns: Pool implementation object refernce.

◆ GetMaxThreads()

static ASPOSECPP_SHARED_API void System::Threading::ThreadPool::GetMaxThreads	(	int &	wt,
		int &	cpt
	)

static

Gets maximal number of concurrent threads.

Parameters

wt	Reference to variable to store maximal number of awailable worker threads.
cpt	Reference to variable to store maximal number of awailable IO threads.

◆ GetMinThreads()

static ASPOSECPP_SHARED_API void System::Threading::ThreadPool::GetMinThreads	(	int &	wt,
		int &	cpt
	)

static

Gets minimal number of threads being created by pool.

Parameters

wt	Reference to variable to store minimal number of awailable worker threads.
cpt	Reference to variable to store minimal number of awailable IO threads.

◆ JoinAllThreads()

static ASPOSECPP_SHARED_API void System::Threading::ThreadPool::JoinAllThreads ( )

static

Joins all owned threads. Waits infinitely.

◆ operator=()

void System::Threading::ThreadPool::operator= ( const ThreadPool & )

delete

No copying.

◆ QueueUserWorkItem() [1/2]

static ASPOSECPP_SHARED_API bool System::Threading::ThreadPool::QueueUserWorkItem ( WaitCallback callback )

static

Puts work item into queue which is present with callback with no parameter.

Parameters

callback Callback function to be used as a job.

Returns: Always returns true.

◆ QueueUserWorkItem() [2/2]

static ASPOSECPP_SHARED_API bool System::Threading::ThreadPool::QueueUserWorkItem	(	WaitCallback	callback,
		const System::SharedPtr< System::Object > &	state
	)

static

Puts work item into queue which is present with callback with no parameter.

Parameters

callback	Callback function to be used as a job.
state	Job function parameter.

Returns: Always returns true.

◆ SetMaxThreads()

static ASPOSECPP_SHARED_API bool System::Threading::ThreadPool::SetMaxThreads	(	int	wt,
		int	cpt
	)

static

Sets number of threads owned by pool.

Parameters

wt	Maximal number of worker threads.
cpt	Maximal number of IO threads.

Returns: True if parameters were accepted, false otherwise.

◆ SetMinThreads()

static ASPOSECPP_SHARED_API bool System::Threading::ThreadPool::SetMinThreads	(	int	wt,
		int	cpt
	)

static

Sets minimal number of threads owned by pool.

Parameters

wt	Minimal number of worker threads.
cpt	Minimal number of IO threads.

Returns: True if parameters were accepted, false otherwise.

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ThreadPool()

Member Function Documentation

◆ GetAvailableThreads()

◆ GetInstance()

◆ GetMaxThreads()

◆ GetMinThreads()

◆ JoinAllThreads()

◆ operator=()

◆ QueueUserWorkItem() [1/2]

◆ QueueUserWorkItem() [2/2]

◆ SetMaxThreads()

◆ SetMinThreads()