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Rehash NTP source table after removing source

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This is needed to avoid breaking a probe sequence and losing another
source. It is costly, but it's not expected to happen frequently.
This commit is contained in:
Miroslav Lichvar 2010-05-13 18:29:00 +02:00
parent 40d82675bd
commit 5fb0a9d53b
1 changed files with 28 additions and 6 deletions
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34
ntp_sources.c
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@ -295,19 +295,41 @@ NSR_AddUnresolvedSource(char *name, int port, NTP_Source_Type type, SourceParame
NSR_Status
NSR_RemoveSource(NTP_Remote_Address *remote_addr)
{
int slot, found;
int i, slot, found;
SourceRecord temp_records[N_RECORDS];
assert(initialised);
find_slot(remote_addr, &slot, &found);
if (!found) {
return NSR_NoSuchSource;
} else {
n_sources--;
records[slot].remote_addr = NULL;
NCR_DestroyInstance(records[slot].data);
return NSR_Success;
}
n_sources--;
records[slot].remote_addr = NULL;
NCR_DestroyInstance(records[slot].data);
/* Rehash the table to make sure there are no broken probe sequences.
This is costly, but it's not expected to happen frequently. */
memcpy(temp_records, records, sizeof (records));
for (i = 0; i < N_RECORDS; i++) {
records[i].remote_addr = NULL;
}
for (i = 0; i < N_RECORDS; i++) {
if (!temp_records[i].remote_addr)
continue;
find_slot(temp_records[i].remote_addr, &slot, &found);
assert(!found);
records[slot].remote_addr = temp_records[i].remote_addr;
records[slot].data = temp_records[i].data;
}
return NSR_Success;
}
/* ================================================== */