MessagingArea *
MessagingArea::Create(sem_id lockSem, sem_id counterSem)
{
// allocate the object on the heap
MessagingArea *area = new(nothrow) MessagingArea;
if (!area)
return NULL;
// create the area
area->fID = create_area("messaging", (void**)&area->fHeader,
B_ANY_KERNEL_ADDRESS, kMessagingAreaSize, B_FULL_LOCK,
B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA | B_USER_CLONEABLE_AREA);
if (area->fID < 0) {
delete area;
return NULL;
}
// finish the initialization of the object
area->fSize = kMessagingAreaSize;
area->fLockSem = lockSem;
area->fCounterSem = counterSem;
area->fNextArea = NULL;
area->InitHeader();
return area;
}
