/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: AuConditionMutex.Unix.cpp
    Date: 2021-6-12
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "AuConditionMutex.Generic.hpp"

#if !defined(_AURUNTIME_GENERICCM)
#include <Source/Time/Time.hpp>

namespace Aurora::Threading::Primitives
{
    UnixConditionMutex::UnixConditionMutex()
    {
        auto status = pthread_mutex_init(&this->value_, nullptr) == 0;
        SysAssert(status, "Mutex init failed");
    }

    UnixConditionMutex::~UnixConditionMutex()
    {
        int status = pthread_mutex_destroy(&this->value_);
        RUNTIME_ASSERT_SHUTDOWN_SAFE(status == 0, "Mutex destruct failed, {} {}", status, errno);
    }

    void UnixConditionMutex::Lock()
    {
        int ret {};
        do
        {
            if ((ret = pthread_mutex_lock(&this->value_)) == 0)
            {
                return;
            }
        }
        while (ret == EINTR);
        
        RUNTIME_ASSERT_SHUTDOWN_SAFE(false, "mutex lock failed: {}", ret)
    }

    bool UnixConditionMutex::TryLock()
    {
        int ret {};
        
        do
        {
            if ((ret = pthread_mutex_trylock(&this->value_)) == 0)
            {
                return true;
            }
        }
        while (ret == EINTR);

        return false;
    }

    void UnixConditionMutex::Unlock()
    {
        auto status = pthread_mutex_unlock(&this->value_) == 0;
        SysAssert(status, "Mutex release error");
    }

    AuUInt UnixConditionMutex::GetOSHandle()
    {
        return AuMach(&this->value_);
    }

    AUKN_SYM IConditionMutex *ConditionMutexNew()
    {
        return _new UnixConditionMutex();
    }

    AUKN_SYM void ConditionMutexRelease(IConditionMutex *mutex)
    {
        AuSafeDelete<UnixConditionMutex *>(mutex);
    }
}

#endif