Sem.hxx

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#ifndef __xwos_cxx_sync_Sem_hxx__
#define __xwos_cxx_sync_Sem_hxx__
 
#include <xwos/osal/sync/sem.hxx>
#include <xwos/cxx/sync/Sel.hxx>
 
namespace xwos {
namespace sync {
 
class Sem
{
  public:
    enum WaitMode : xwu32_t {
        SemWait = 0, 
        SemWaitTimed, 
        SemWaitUninterruptable, 
        SemTryWait, 
    };
 
  protected:
    struct xwos_sem * mSemPtr;
 
  protected:
    Sem() : mSemPtr(nullptr) {}
    ~Sem() { mSemPtr = nullptr; }
 
  public:
    xwer_t post() { return xwos_sem_post(mSemPtr); }
 
    xwer_t wait(enum WaitMode mode = WaitMode::SemWait, xwtm_t to = XWTM_MAX)
    {
        xwer_t rc;
        switch (mode) {
            case WaitMode::SemWait:
                rc = xwos_sem_wait(mSemPtr);
                break;
            case WaitMode::SemWaitTimed:
                rc = xwos_sem_wait_to(mSemPtr, to);
                break;
            case WaitMode::SemWaitUninterruptable:
                rc = xwos_sem_wait_unintr(mSemPtr);
                break;
            case WaitMode::SemTryWait:
                rc = xwos_sem_trywait(mSemPtr);
                break;
            default:
                rc = xwos_sem_wait(mSemPtr);
                break;
        }
        return rc;
    }
 
    xwer_t freeze() { return xwos_sem_freeze(mSemPtr); }
 
    xwer_t thaw() { return xwos_sem_thaw(mSemPtr); }
 
    xwssq_t max()
    {
        xwssq_t max;
        xwos_sem_get_max(mSemPtr, &max);
        return max;
    }
 
    xwssq_t value()
    {
        xwssq_t value;
        xwos_sem_get_value(mSemPtr, &value);
        return value;
    }
 
    template<xwsz_t TSelNum>
    xwer_t bind(Sel<TSelNum> * sel, long pos)
    {
        return xwos_sem_bind(mSemPtr, sel->getXwosObj(), (xwsq_t)pos);
    }
 
    template<xwsz_t TSelNum>
    xwer_t bind(Sel<TSelNum> & sel, long pos)
    {
        return xwos_sem_bind(mSemPtr, sel.getXwosObj(), (xwsq_t)pos);
    }
 
    template<xwsz_t TSelNum>
    xwer_t unbind(Sel<TSelNum> * sel)
    {
        return xwos_sem_unbind(mSemPtr, sel->getXwosObj());
    }
 
    template<xwsz_t TSelNum>
    xwer_t unbind(Sel<TSelNum> & sel)
    {
        return xwos_sem_unbind(mSemPtr, sel.getXwosObj());
    }
 
    struct xwos_sem * getXwosObj() { return mSemPtr; }
};
 
} // namespace sync
} // namespace xwos
 
#endif /* xwos/cxx/sync/Sem.hxx */