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add debug logging when creating or attaching to a query counter

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fctx_create() now logs at debug level 9 when the fctx attaches
to an existing counter or creates a new one.

(cherry picked from commit 825f3d68c5)
This commit is contained in:
Evan Hunt
2024-06-25 11:02:49 -07:00
parent 18e39d989f
commit 14bce7e275
1 changed files with 18 additions and 10 deletions
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28
lib/dns/resolver.c
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@@ -4809,16 +4809,6 @@ fctx_create(dns_resolver_t *res, isc_task_t *task, const dns_name_t *name,
dns_resolver_attach(res, &fctx->res);
if (qc != NULL) {
isc_counter_attach(qc, &fctx->qc);
} else {
result = isc_counter_create(res->mctx, res->maxqueries,
&fctx->qc);
if (result != ISC_R_SUCCESS) {
goto cleanup_fetch;
}
}
/*
* Make fctx->info point to a copy of a formatted string
* "name/type". FCTXTRACE won't work until this is done.
@@ -4831,6 +4821,24 @@ fctx_create(dns_resolver_t *res, isc_task_t *task, const dns_name_t *name,
FCTXTRACE("create");
if (qc != NULL) {
isc_counter_attach(qc, &fctx->qc);
isc_log_write(dns_lctx, DNS_LOGCATEGORY_RESOLVER,
DNS_LOGMODULE_RESOLVER, ISC_LOG_DEBUG(9),
"fctx %p(%s): attached to counter %p (%d)", fctx,
fctx->info, fctx->qc, isc_counter_used(fctx->qc));
} else {
result = isc_counter_create(res->mctx, res->maxqueries,
&fctx->qc);
if (result != ISC_R_SUCCESS) {
goto cleanup_fetch;
}
isc_log_write(dns_lctx, DNS_LOGCATEGORY_RESOLVER,
DNS_LOGMODULE_RESOLVER, ISC_LOG_DEBUG(9),
"fctx %p(%s): created counter %p", fctx,
fctx->info, fctx->qc);
}
isc_refcount_init(&fctx->references, 1);
ISC_LIST_INIT(fctx->queries);