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Rewriting entry_is_time_to_retry() using table approach.

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This commit is contained in:
rl1987 2014-08-19 22:12:19 +03:00 committed by Nick Mathewson
parent 2937de2180
commit 197d855009
2 changed files with 31 additions and 10 deletions
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4
changes/bug12205 Normal file
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@ -0,0 +1,4 @@
o Minor refactoring:
- Refactoring and unit-testing entry_is_time_to_retry() in
entrynodes.c. Resolves ticket 12205.

37
src/or/entrynodes.c
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@ -159,18 +159,35 @@ entry_guard_set_status(entry_guard_t *e, const node_t *node,
static int
entry_is_time_to_retry(const entry_guard_t *e, time_t now)
{
long diff;
struct guard_retry_period_s {
time_t period_duration;
time_t interval_during_period;
};
struct guard_retry_period_s periods[] = {
{ 6*60*60, 60*60 },
{ 3*24*60*60, 4*60*60 },
{ 7*24*60*60, 18*60*60 },
{ TIME_MAX, 36*60*60 }
};
time_t ith_deadline_for_retry;
time_t unreachable_for;
int i;
if (e->last_attempted < e->unreachable_since)
return 1;
diff = now - e->unreachable_since;
if (diff < 6*60*60)
return now > (e->last_attempted + 60*60);
else if (diff < 3*24*60*60)
return now > (e->last_attempted + 4*60*60);
else if (diff < 7*24*60*60)
return now > (e->last_attempted + 18*60*60);
else
return now > (e->last_attempted + 36*60*60);
unreachable_for = now - e->unreachable_since;
for (i = 0; ; i++) {
if (unreachable_for <= periods[i].period_duration) {
ith_deadline_for_retry = e->last_attempted +
periods[i].interval_during_period;
return (now > ith_deadline_for_retry);
}
}
}
/** Return the node corresponding to <b>e</b>, if <b>e</b> is