#include "os/c-api/il2cpp-config-platforms.h"

#if IL2CPP_THREADS_WIN32

#include "SemaphoreImpl.h"
#include "WindowsHelpers.h"

namespace il2cpp
{
namespace os
{
    SemaphoreImpl::SemaphoreImpl(int32_t initialValue, int32_t maximumValue)
    {
#if IL2CPP_THREADS_ALL_ACCESS
        m_Handle = ::CreateSemaphoreEx(NULL, initialValue, maximumValue, NULL, 0, SEMAPHORE_ALL_ACCESS);
#else
        m_Handle = ::CreateSemaphore(NULL, initialValue, maximumValue, NULL);
#endif

        IL2CPP_ASSERT(m_Handle);
    }

    SemaphoreImpl::~SemaphoreImpl()
    {
        IL2CPP_ASSERT(m_Handle);

        ::CloseHandle(m_Handle);
    }

    bool SemaphoreImpl::Post(int32_t releaseCount, int32_t* previousCount)
    {
        return ::ReleaseSemaphore(m_Handle, releaseCount, reinterpret_cast<LPLONG>(previousCount)) != 0;
    }

    WaitStatus SemaphoreImpl::Wait(bool interruptible)
    {
        return Wait(INFINITE, interruptible);
    }

    WaitStatus SemaphoreImpl::Wait(uint32_t ms, bool interruptible)
    {
        return il2cpp::os::win::WaitForSingleObjectAndAccountForAPCs(m_Handle, ms, interruptible);
    }

    void* SemaphoreImpl::GetOSHandle()
    {
        return (void*)m_Handle;
    }
}
}

#endif
