/* =============================================================================
* 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;
}
/* =============================================================================
* 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
}
/* =============================================================================
* 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;
}
/* =============================================================================
* 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;
}
/* =============================================================================
* 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;
}
/* =============================================================================
* 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
}
/* =============================================================================
* 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
}
