Exemplo n.º 1
0
/* =============================================================================
 * reservation_updatePrice
 * -- Failure if 'price' < 0
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_stm::reservation_updatePrice (TM_ARGDECL  reservation_t* reservationPtr, long newPrice)
{
    if (newPrice < 0) {
        return FALSE;
    }

    SLOW_PATH_SHARED_WRITE(reservationPtr->price, newPrice);

    CHECK_RESERVATION(reservationPtr);

    return TRUE;
}
Exemplo n.º 2
0
/* =============================================================================
 * reservation_updatePrice
 * -- Failure if 'price' < 0
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_updatePrice (TM_ARGDECL  reservation_t* reservationPtr, int newPrice)
{
#ifdef reservation2
		return reservationPtr->reservation_update_price(TM_ARG newPrice);
#else
    if (newPrice < 0) {
        return FALSE;
    }
    TM_SHARED_WRITE(reservationPtr->price, newPrice);
    CHECK_RESERVATION(reservationPtr);
    return TRUE;
#endif

}
Exemplo n.º 3
0
/* =============================================================================
 * reservation_make
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_stm::reservation_make (TM_ARGDECL  reservation_t* reservationPtr)
{
    long numFree = (long)SLOW_PATH_SHARED_READ(reservationPtr->numFree);

    if (numFree < 1) {
        return FALSE;
    }
    SLOW_PATH_SHARED_WRITE(reservationPtr->numUsed,
                    ((long)SLOW_PATH_SHARED_READ(reservationPtr->numUsed) + 1));
    SLOW_PATH_SHARED_WRITE(reservationPtr->numFree, (numFree - 1));

    CHECK_RESERVATION(reservationPtr);

    return TRUE;
}
Exemplo n.º 4
0
/* =============================================================================
 * reservation_addToTotal
 * -- Adds if 'num' > 0, removes if 'num' < 0;
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_stm::reservation_addToTotal (TM_ARGDECL  reservation_t* reservationPtr, long num)
{
    long numFree = (long)SLOW_PATH_SHARED_READ(reservationPtr->numFree);

    if (numFree + num < 0) {
        return FALSE;
    }

    SLOW_PATH_SHARED_WRITE(reservationPtr->numFree, (numFree + num));
    SLOW_PATH_SHARED_WRITE(reservationPtr->numTotal,
                    ((long)SLOW_PATH_SHARED_READ(reservationPtr->numTotal) + num));

    CHECK_RESERVATION(reservationPtr);

    return TRUE;
}
Exemplo n.º 5
0
/* =============================================================================
 * reservation_alloc
 * -- Returns NULL on failure
 * =============================================================================
 */
reservation_t*
reservation_stm::reservation_alloc (TM_ARGDECL  long id, long numTotal, long price)
{
    reservation_t* reservationPtr;

    reservationPtr = (reservation_t*)TM_MALLOC(sizeof(reservation_t));
    if (reservationPtr != NULL) {
        reservationPtr->id = id;
        reservationPtr->numUsed = 0;
        reservationPtr->numFree = numTotal;
        reservationPtr->numTotal = numTotal;
        reservationPtr->price = price;
        CHECK_RESERVATION(reservationPtr);
    }

    return reservationPtr;
}
Exemplo n.º 6
0
/* =============================================================================
 * reservation_addToTotal
 * -- Adds if 'num' > 0, removes if 'num' < 0;
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_addToTotal (TM_ARGDECL  reservation_t* reservationPtr, int num)
{
#ifdef reservation2
		return reservationPtr->reservation_addToTotal(TM_ARG num);
#else
    int numFree = TM_SHARED_READ(reservationPtr->numFree);

    if (numFree + num < 0) {
        return FALSE;
    }
    
		int numTotal = TM_SHARED_READ(reservationPtr->numTotal);
	
		TM_SHARED_WRITE(reservationPtr->numTotal, numTotal + num);
		TM_SHARED_WRITE(reservationPtr->numFree, numFree + num);
    CHECK_RESERVATION(reservationPtr);
    return TRUE;
#endif
}
Exemplo n.º 7
0
/* =============================================================================
 * reservation_cancel
 * -- Returns TRUE on success, else FALSE
 * =============================================================================
 */
bool_t
reservation_cancel (TM_ARGDECL  reservation_t* reservationPtr)
{
#ifdef reservation2
		return reservationPtr->reservation_cancel(TM_ARG_ALONE);
#else
    int numUsed = TM_SHARED_READ(reservationPtr->numUsed);

    if (numUsed < 1) {
        return FALSE;
    }

		TM_SHARED_WRITE(reservationPtr->numUsed, numUsed-1);
		TM_SHARED_WRITE(reservationPtr->numFree, 
						TM_SHARED_READ(reservationPtr->numFree)+1);

    CHECK_RESERVATION(reservationPtr);

    return TRUE;
#endif
}