System::Threading::Mutex Class Reference

Inherits System::Threading::WaitHandle.

Public Member Functions

ASPOSECPP_SHARED_API Mutex ()
 Constructs unowned mutex. More...
 
ASPOSECPP_SHARED_API Mutex (bool initiallyOwned)
 
ASPOSECPP_SHARED_API Mutex (bool initiallyOwned, const String &name)
 
ASPOSECPP_SHARED_API void ReleaseMutex ()
 Releases the mutex. More...
 
virtual ASPOSECPP_SHARED_API bool Reset ()
 Resets mutex state. Not implemented. More...
 
virtual ASPOSECPP_SHARED_API bool Set ()
 Set mutex to signalled state. Not implemented. More...
 
virtual ASPOSECPP_SHARED_API bool WaitOne () override
 
virtual ASPOSECPP_SHARED_API bool WaitOne (int millisecondsTimeout) override
 
virtual ASPOSECPP_SHARED_API bool WaitOne (TimeSpan timeout) override
 
- Public Member Functions inherited from System::Threading::WaitHandle
virtual ASPOSECPP_SHARED_API bool WaitOne (int millisecondsTimeout, bool exitContext)
 
virtual ASPOSECPP_SHARED_API ~WaitHandle ()
 Destructor. More...
 
virtual ASPOSECPP_SHARED_API void Close ()
 Releases any resource associated with handle. More...
 
ASPOSECPP_SHARED_API wait_handle_t get_Handle ()
 
- 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...
 
Objectoperator= (Object const &x)
 Assignment operator. Doesn't copy anything, really, just initializes new object and enables copy constructing subclasses. More...
 
ObjectSharedRefAdded ()
 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 TypeInfoGetType () 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 bool Remove (const String &mutexName)
 
- Static Public Member Functions inherited from System::Threading::WaitHandle
static ASPOSECPP_SHARED_API bool WaitAll (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles, int millisecondsTimeout)
 
static ASPOSECPP_SHARED_API bool WaitAll (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles, TimeSpan timeout)
 
static ASPOSECPP_SHARED_API bool WaitAll (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles)
 
static ASPOSECPP_SHARED_API int WaitAny (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles, int millisecondsTimeout)
 
static ASPOSECPP_SHARED_API int WaitAny (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles, TimeSpan timeout)
 
static ASPOSECPP_SHARED_API int WaitAny (const System::ArrayPtr< System::SharedPtr< WaitHandle >> &waitHandles)
 
- 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 TypeInfoType ()
 Implements C# typeof(System.Object) construct. More...
 

Additional Inherited Members

- Public Types inherited from System::Object
typedef SmartPtr< Objectptr
 Alias for smart pointer type. More...
 
- Static Public Attributes inherited from System::Threading::WaitHandle
static ASPOSECPP_SHARED_API const int WaitTimeout = 0x102
 Special value to be returned by the function otherwise returning index of signalled object in array, if timeout exceeds and nothing signals. More...
 

Detailed Description

Mutex implemnetation. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.

#include "system/threading/mutex.h"
#include "system/threading/thread.h"
#include "system/console.h"
#include "system/convert.h"
#include "system/smart_ptr.h"
#include "system/string.h"
int main()
{
auto mutex = System::MakeObject<System::Threading::Mutex>();
const int THREADS_COUNT = 3;
std::vector<System::SharedPtr<System::Threading::Thread>> threads;
threads.reserve(THREADS_COUNT);
for (auto i = 0; i < THREADS_COUNT; ++i)
{
threads.push_back(System::MakeObject<System::Threading::Thread>([&mutex, &str]()
{
mutex->WaitOne();
mutex->ReleaseMutex();
}));
threads[i]->Start();
}
return 0;
}
/*
* This code example produces the following output:
* Thread 1 started.
* Thread 1 ended.
* Thread 2 started.
* Thread 2 ended.
* Thread 3 started.
* Thread 3 ended.
*/

Constructor & Destructor Documentation

◆ Mutex() [1/3]

ASPOSECPP_SHARED_API System::Threading::Mutex::Mutex ( )

Constructs unowned mutex.

◆ Mutex() [2/3]

ASPOSECPP_SHARED_API System::Threading::Mutex::Mutex ( bool  initiallyOwned)

Constructor.

Parameters
initiallyOwnedIf true, the mutex being constructed is owned initially.

◆ Mutex() [3/3]

ASPOSECPP_SHARED_API System::Threading::Mutex::Mutex ( bool  initiallyOwned,
const String name 
)

Constructor.

Parameters
initiallyOwnedIf true, the mutex being constructed is owned initially.
nameName of the mutex.

Member Function Documentation

◆ ReleaseMutex()

ASPOSECPP_SHARED_API void System::Threading::Mutex::ReleaseMutex ( )

Releases the mutex.

◆ Remove()

static ASPOSECPP_SHARED_API bool System::Threading::Mutex::Remove ( const String mutexName)
static

Erases a named mutex from the system.

Returns
false on error

◆ Reset()

virtual ASPOSECPP_SHARED_API bool System::Threading::Mutex::Reset ( )
virtual

Resets mutex state. Not implemented.

◆ Set()

virtual ASPOSECPP_SHARED_API bool System::Threading::Mutex::Set ( )
virtual

Set mutex to signalled state. Not implemented.

◆ WaitOne() [1/3]

virtual ASPOSECPP_SHARED_API bool System::Threading::Mutex::WaitOne ( )
overridevirtual

Locks mutex. Performs unlimited waiting if neccessary.

Returns
Always returns true as it does not return until mutex is locked.

Reimplemented from System::Threading::WaitHandle.

◆ WaitOne() [2/3]

virtual ASPOSECPP_SHARED_API bool System::Threading::Mutex::WaitOne ( int  millisecondsTimeout)
overridevirtual

Locks mutex. Performs waiting if neccessary.

Parameters
millisecondsTimeoutWaiting timeout in milliseconds.
Returns
Returns true if mutex was locked or false if timeout exceeded.

Reimplemented from System::Threading::WaitHandle.

◆ WaitOne() [3/3]

virtual ASPOSECPP_SHARED_API bool System::Threading::Mutex::WaitOne ( TimeSpan  timeout)
overridevirtual

Locks mutex. Performs waiting if neccessary.

Parameters
timeoutA System::TimeSpan that represents the number of milliseconds to wait, or a System::TimeSpan that represents -1 milliseconds to wait indefinitely.
Returns
Returns true if mutex was locked or false if timeout exceeded.

Reimplemented from System::Threading::WaitHandle.