System::Threading::Mutex classe

Mutex class

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.

class Mutex : public System::Threading::WaitHandle

Méthodes

MéthodeDescription
Mutex()Informations RTTI.
Mutex(bool)Constructeur.
Mutex(bool, const String&)Constructeur.
ReleaseMutex()Libère le mutex.
static Remove(const String&)Efface un mutex nommé du système.
virtual Reset()Réinitialise l’état du mutex. Non implémenté.
virtual Set()Met le mutex en état signalé. Non implémenté.
WaitOne() overrideVerrouille le mutex. Effectue une attente illimitée si nécessaire.
WaitOne(int) overrideVerrouille le mutex. Effectue une attente si nécessaire.
WaitOne(TimeSpan) overrideVerrouille le mutex. Effectue une attente si nécessaire.

Champs

ChampDescription
static WaitTimeoutValeur spéciale à renvoyer par la fonction, sinon renvoie l’indice de l’objet signalé dans le tableau, si le délai d’attente dépasse et qu’aucun signal n’est reçu.

Remarques

#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>();

  System::String str;

  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();

      str += u"Thread " + System::Convert::ToString(System::Threading::Thread::GetCurrentThreadId()) + u" started." + System::Environment::get_NewLine();

      System::Threading::Thread::Sleep(200);

      str += u"Thread " + System::Convert::ToString(System::Threading::Thread::GetCurrentThreadId()) + u" ended." + System::Environment::get_NewLine();

      mutex->ReleaseMutex();
    }));

    threads[i]->Start();
  }

  System::Threading::Thread::Sleep(700);

  System::Console::WriteLine(str);

  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.
*/

Voir aussi

Classe System::Threading::Monitor Classe System::Threading::Semaphore