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param: Use utarray_find when looking for changed parameters and use a binary search for finding param handles by name.

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This commit is contained in:
Stephan Brown
2017-01-04 13:22:56 -08:00
committed by Beat Küng
parent e90bf8f8e5
commit 99228bdeb1
1 changed files with 17 additions and 17 deletions
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src/modules/systemlib/param/param.c
+17 -17
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@@ -227,19 +227,9 @@ param_find_changed(param_t param)
param_assert_locked();
if (param_values != NULL) {
#if 0 /* utarray_find requires bsearch, not available */
struct param_wbuf_s key;
key.param = param;
s = utarray_find(param_values, &key, param_compare_values);
#else
while ((s = (struct param_wbuf_s *)utarray_next(param_values, s)) != NULL) {
if (s->param == param) {
break;
}
}
#endif
}
return s;
@@ -271,17 +261,27 @@ param_notify_changes(bool is_saved)
param_t
param_find_internal(const char *name, bool notification)
{
param_t param;
param_t middle;
param_t front = 0;
param_t last = get_param_info_count()-1;
/* perform a linear search of the known parameters */
/* perform a binary search of the known parameters */
for (param = 0; handle_in_range(param); param++) {
if (!strcmp(param_info_base[param].name, name)) {
while (front <= last) {
middle = front + (last-front) / 2;
int ret = strcmp(name, param_info_base[middle].name);
if (ret == 0) {
if (notification) {
param_set_used_internal(param);
param_set_used_internal(middle);
}
return param;
return middle;
} else if (middle == front || middle == last) {
/* An end point has been hit, but there has been no match */
break;
} else if (ret < 0) {
last = middle - 1;
} else {
front = middle + 1;
}
}