static int update_file(const char *path, void *entry, int esize)
{
int rv = -1;
int file;
char *map;
if ((file = open(path, O_RDWR)) >= 0)
{
map = mmap(NULL, esize * STEP_COUNT, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_LOCKED, file, 0);
if ((map != NULL) && (map != MAP_FAILED))
{
if (timeof(entry) > timeof(map + esize * (STEP_COUNT-1)))
{
memmove(map, map + esize, esize * (STEP_COUNT-1));
memcpy(map + esize * (STEP_COUNT-1), entry, esize);
}
munmap(map, esize * STEP_COUNT);
rv = 0;
}
close(file);
}
return rv;
}
static Node *
newnode(char *name)
{
register Node *node;
node = (Node *)Malloc(sizeof(Node));
symlook(name, S_NODE, (void *)node);
node->name = name;
node->time = timeof(name, 0);
node->prereqs = 0;
node->flags = node->time? PROBABLE : 0;
node->next = 0;
return(node);
}
void
update(int fake, Node *node)
{
Arc *a;
MADESET(node, fake? BEINGMADE : MADE);
if(((node->flags&VIRTUAL) == 0) && (access(node->name, 0) == 0)){
node->time = timeof(node->name, 1);
node->flags &= ~(CANPRETEND|PRETENDING);
for(a = node->prereqs; a; a = a->next)
if(a->prog)
outofdate(node, a, 1);
} else {
node->time = 1;
for(a = node->prereqs; a; a = a->next)
if(a->n && outofdate(node, a, 1))
node->time = a->n->time;
}
/* print("----node %s time=%lud flags=0x%x\n", node->name, node->time, node->flags);/**/
}