void VMDestroy(VM vm)
{
int r;
int zero_fd, none_fd;
AVERT(VM, vm);
AVER(vm->mapped == (Size)0);
/* This appears to be pretty pointless, since the space descriptor */
/* page is about to vanish completely. However, munmap might fail */
/* for some reason, and this would ensure that it was still */
/* discovered if sigs were being checked. */
vm->sig = SigInvalid;
zero_fd = vm->zero_fd; none_fd = vm->none_fd;
r = munmap((caddr_t)vm->base, (int)AddrOffset(vm->base, vm->limit));
AVER(r == 0);
r = munmap((caddr_t)vm,
(int)SizeAlignUp(sizeof(VMStruct), vm->align));
AVER(r == 0);
/* .close.fail: We ignore failure from close() as there's very */
/* little we can do anyway. */
(void)close(zero_fd);
(void)close(none_fd);
EVENT_P(VMDestroy, vm);
}
void VMDestroy(VM vm)
{
int r;
int zero_fd;
AVERT(VM, vm);
AVER(vm->mapped == (Size)0);
/* This appears to be pretty pointless, since the descriptor */
/* page is about to vanish completely. However, munmap might fail */
/* for some reason, and this would ensure that it was still */
/* discovered if sigs were being checked. */
vm->sig = SigInvalid;
zero_fd = vm->zero_fd;
r = munmap((void *)vm->base, (size_t)AddrOffset(vm->base, vm->limit));
AVER(r == 0);
r = munmap((void *)vm, (size_t)SizeAlignUp(sizeof(VMStruct), vm->align));
AVER(r == 0);
r = close(zero_fd);
AVER(r == 0);
EVENT_P(VMDestroy, vm);
}