This topic shows how to implement the C# lock keyword in C++. For more information, see lock Statement (C# Reference).

You can also use the lock class in the C++ Support Library. See Synchronization (lock Class) for more information.

Example

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// CS_lock_in_CPP.cpp // compile with: /clr /c using namespace System::Threading; ref class Lock { Object^ m_pObject; Lock % operator=( Lock const % ); Lock( Lock const % ); public: Lock( Object ^ pObject ) : m_pObject( pObject ) { Monitor::Enter( m_pObject ); } ~Lock() { Monitor::Exit( m_pObject ); } }; ref struct LockHelper { void DoSomething(); }; void LockHelper::DoSomething() { // Note: Reference type with stack allocation semantics to provide // deterministic finalization Lock lock( this ); // LockHelper instance is locked }

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// CS_lock_in_CPP.cpp
// compile with: /clr /c
using namespace System::Threading;
ref class Lock {
   Object^ m_pObject;
   Lock % operator=( Lock const % );
   Lock( Lock const % );
public:
   Lock( Object ^ pObject ) : m_pObject( pObject ) {
      Monitor::Enter( m_pObject );
   }
   ~Lock() {
      Monitor::Exit( m_pObject );
   }
};

ref struct LockHelper {
   void DoSomething();
};

void LockHelper::DoSomething() {
   // Note: Reference type with stack allocation semantics to provide 
   // deterministic finalization

   Lock lock( this );   
   // LockHelper instance is locked
}

Example

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