Dear Mike Frysinger,
On Thursday 02 August 2012 09:55:24 Lukasz Majewski wrote:
Dear Mike Frysinger,
On Tuesday 31 July 2012 02:36:59 Lukasz Majewski wrote:
+{
- int i = 0;
- for (; *s; s++)
if (*s == ';')i++;- return ++i;
+}
In this function I count how many times the ';' separator appears.
well, to be more specific, i think it's counting the number of elements if you were to split on ';'. so if there was one ';', this would return 2. but you're correct of course that my suggested replacement is not equivalent.
+int dfu_config_entities(char *env, char *interface, int num) +{
- struct dfu_entity *dfu;
- int i, ret;
- char *s;
- dfu_alt_num = dfu_find_alt_num(env);
- debug("%s: dfu_alt_num=%d\n", __func__, dfu_alt_num);
- for (i = 0; i < dfu_alt_num; i++) {
dfu = calloc(sizeof(struct dfu_entity), 1);seems like you can do this in a single call outside of the for loop: dfu = calloc(sizeof(*dfu), dfu_alt_num); if (!dfu)
return -1;for (i = 0; i < dfu_alt_num; i++) {
s = strsep(&env, ";"); ret = dfu_fill_entity(&dfu[i], s, i, interface, num); if (ret)return -1; list_add_tail(&dfu[i].list, &dfu_list);
}
I'd prefer to leave it as it is (since IMHO is more readable) with the
addition of following code:
it might be more slightly more readable, but doing a single function call results in better runtime performance
Doesn't the compiler optimize it as it sees fit?
Best regards, Marek Vasut