[PATCH 17/40] xenParseXLNamespaceData: Pre-calculate the length of array
Precalculate the lenght to avoid use of 'virStringListAdd' in a loop.
The code is also simplified by using APIs which don't return errors.
Signed-off-by: Peter Krempa <pkrempa(a)redhat.com>
---
src/libxl/xen_xl.c | 41 ++++++++++++++++++++++-------------------
1 file changed, 22 insertions(+), 19 deletions(-)
diff --git a/src/libxl/xen_xl.c b/src/libxl/xen_xl.c
index 941832ce4e..a8af54a845 100644
--- a/src/libxl/xen_xl.c
+++ b/src/libxl/xen_xl.c
@@ -1150,33 +1150,36 @@ static int
xenParseXLNamespaceData(virConfPtr conf, virDomainDefPtr def)
{
virConfValuePtr list = virConfGetValue(conf, "device_model_args");
- g_auto(GStrv) args = NULL;
- size_t nargs;
+ virConfValuePtr next;
+ size_t nargs = 0;
libxlDomainXmlNsDefPtr nsdata = NULL;
+ size_t n = 0;
- if (list && list->type == VIR_CONF_LIST) {
- list = list->list;
- while (list) {
- if ((list->type != VIR_CONF_STRING) || (list->str == NULL)) {
- list = list->next;
- continue;
- }
+ if (!list || list->type != VIR_CONF_LIST)
+ return 0;
- virStringListAdd(&args, list->str);
- list = list->next;
- }
+ list = list->list;
+
+ for (next = list; next; next = next->next) {
+ if (next->type != VIR_CONF_STRING || !next->str)
+ continue;
+
+ nargs++;
}
- if (!args)
+ if (nargs == 0)
return 0;
- nargs = g_strv_length(args);
- if (nargs > 0) {
- nsdata = g_new0(libxlDomainXmlNsDef, 1);
+ nsdata = g_new0(libxlDomainXmlNsDef, 1);
+ def->namespaceData = nsdata;
+ nsdata->args = g_new0(char *, nargs + 1);
+ nsdata->num_args = nargs;
+
+ for (next = list; next; next = next->next) {
+ if (next->type != VIR_CONF_STRING || !next->str)
+ continue;
- nsdata->args = g_steal_pointer(&args);
- nsdata->num_args = nargs;
- def->namespaceData = nsdata;
+ nsdata->args[n++] = g_strdup(next->str);
}
return 0;
--
2.29.2