PThreadsRecursiveMutex.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
// HEADER_UNIT_UNSUPPORTED - Unsupported platform
 
#include "CoreTypes.h"
 
#if PLATFORM_USE_PTHREADS
 
#include <pthread.h>
#include <errno.h>
 
namespace UE
{
 
class FPThreadsRecursiveMutex final
{
public:
    FPThreadsRecursiveMutex(const FPThreadsRecursiveMutex&) = delete;
    FPThreadsRecursiveMutex& operator=(const FPThreadsRecursiveMutex&) = delete;
 
    inline FPThreadsRecursiveMutex()
    {
        pthread_mutexattr_t MutexAttributes;
        pthread_mutexattr_init(&MutexAttributes);
        pthread_mutexattr_settype(&MutexAttributes, PTHREAD_MUTEX_RECURSIVE);
        pthread_mutex_init(&Mutex, &MutexAttributes);
        pthread_mutexattr_destroy(&MutexAttributes);
    }
 
    UE_FORCEINLINE_HINT ~FPThreadsRecursiveMutex()
    {
        pthread_mutex_destroy(&Mutex);
    }
 
    UE_FORCEINLINE_HINT bool TryLock()
    {
        return pthread_mutex_trylock(&Mutex) == 0;
    }
 
    UE_FORCEINLINE_HINT void Lock()
    {
        pthread_mutex_lock(&Mutex);
    }
 
    UE_FORCEINLINE_HINT void Unlock()
    {
        pthread_mutex_unlock(&Mutex);
    }
 
private:
    pthread_mutex_t Mutex;
};
 
} // UE
 
#endif // PLATFORM_USE_PTHREADS