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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.
This commit is contained in:
Evan Hunt
2024-06-25 11:02:49 -07:00
parent af7db89513
commit 825f3d68c5
1 changed files with 18 additions and 10 deletions
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28
lib/dns/resolver.c
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@@ -4520,16 +4520,6 @@ fctx_create(dns_resolver_t *res, isc_loop_t *loop, const dns_name_t *name,
isc_mutex_init(&fctx->lock);
if (qc != NULL) {
isc_counter_attach(qc, &fctx->qc);
} else {
result = isc_counter_create(fctx->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.
@@ -4542,6 +4532,24 @@ fctx_create(dns_resolver_t *res, isc_loop_t *loop, 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(fctx->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);
}
#if DNS_RESOLVER_TRACE
fprintf(stderr, "fetchctx__init:%s:%s:%d:%p:%p->references = 1\n",
__func__, __FILE__, __LINE__, fctx, fctx);