Attached is a diff (independent of my rtsig patch) that allows you to
specify a search order for libevent methods by putting a comma
seperated list of method names in environment variable
"EVENT_METHODS", which I find more graceful than dealing with n
different EVENT_NOxxxx variables.
--- event.c.orig 2008-02-25 02:34:37.000000000 -0500
+++ event.c 2008-05-12 18:07:57.000000000 -0400
@@ -171,6 +171,7 @@
{
int i;
struct event_base *base;
+ char *event_methods;
if ((base = calloc(1, sizeof(struct event_base))) == NULL)
event_err(1, "%s: calloc", __func__);
@@ -188,10 +189,39 @@
base->sig.ev_signal_pair[1] = -1;
base->evbase = NULL;
- for (i = 0; eventops[i] && !base->evbase; i++) {
- base->evsel = eventops[i];
+ event_methods = getenv("EVENT_METHODS");
+ if (event_methods) {
+ char *mtemp = strdup(event_methods);
+ char *mp, *np;
+
+ for (mp = mtemp; mp && !base->evbase; mp = np) {
+ int found = 0;
+ const struct eventop **opp;
+
+ np = strchr(mp, ',');
+ if (np)
+ *np++ = '\0';
+ for (opp = eventops; *opp; opp++) {
+ const struct eventop *op = *opp;
+ if (op->name && strcmp(mp, op->name) == 0) {
+ base->evsel = op;
+ base->evbase = base->evsel->init(base);
+ found = 1;
+ break;
+ }
+ }
+#if 0 /* if EVENT_SHOW_METHOD env var set? */
+ if (!found)
+ event_msgx("libevent %s not found", mp);
+#endif
- base->evbase = base->evsel->init(base);
+ }
+ }
+ else {
+ for (i = 0; eventops[i] && !base->evbase; i++) {
+ base->evsel = eventops[i];
+ base->evbase = base->evsel->init(base);
+ }
}
if (base->evbase == NULL)
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