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chg: dev: Refactor decref() in both QPDB

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Clean up the pattern in the newref() and decref() functions in QP databases.  Replace the `db_nodelock_t` structure with plain reference counting for every active database node in QPDB.

Related to #5134

Merge branch '5134-refactor-decref-functions-in-qpdb' into 'main'

See merge request isc-projects/bind9!10006
This commit is contained in:
Evan Hunt
2025-01-31 04:45:07 +00:00
parent fd51d80297 d4f791793e
commit f43bf94ece
4 changed files with 585 additions and 633 deletions
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8
lib/dns/db_p.h
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@@ -143,14 +143,6 @@ typedef struct dns_glue_additionaldata_ctx {
dns_glue_t *glue;
} dns_glue_additionaldata_ctx_t;
typedef struct {
isc_rwlock_t lock;
/* Protected in the refcount routines. */
isc_refcount_t references;
/* Locked by lock. */
bool exiting;
} db_nodelock_t;
static inline bool
prio_type(dns_typepair_t type) {
switch (type) {

647
lib/dns/qpcache.c
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File diff suppressed because it is too large Load Diff

551
lib/dns/qpzone.c
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File diff suppressed because it is too large Load Diff

12
tests/dns/qpzone_test.c
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@@ -101,7 +101,7 @@ const char *ownercase_vectors[12][2] = {
static bool
ownercase_test_one(const char *str1, const char *str2) {
isc_result_t result;
db_nodelock_t node_locks[1];
isc_rwlock_t node_locks[1];
qpzonedb_t qpdb = {
.common.methods = &qpdb_zonemethods,
.common.mctx = mctx,
@@ -128,7 +128,7 @@ ownercase_test_one(const char *str1, const char *str2) {
memset(node_locks, 0, sizeof(node_locks));
/* Minimal initialization of the mock objects */
NODE_INITLOCK(&qpdb.node_locks[0].lock);
NODE_INITLOCK(&qpdb.node_locks[0]);
isc_buffer_constinit(&b, str1, strlen(str1));
isc_buffer_add(&b, strlen(str1));
@@ -148,7 +148,7 @@ ownercase_test_one(const char *str1, const char *str2) {
/* Retrieve the case to name2 */
dns_rdataset_getownercase(&rdataset, name2);
NODE_DESTROYLOCK(&qpdb.node_locks[0].lock);
NODE_DESTROYLOCK(&qpdb.node_locks[0]);
return dns_name_caseequal(name1, name2);
}
@@ -169,7 +169,7 @@ ISC_RUN_TEST_IMPL(ownercase) {
ISC_RUN_TEST_IMPL(setownercase) {
isc_result_t result;
db_nodelock_t node_locks[1];
isc_rwlock_t node_locks[1];
qpzonedb_t qpdb = {
.common.methods = &qpdb_zonemethods,
.common.mctx = mctx,
@@ -200,7 +200,7 @@ ISC_RUN_TEST_IMPL(setownercase) {
/* Minimal initialization of the mock objects */
memset(node_locks, 0, sizeof(node_locks));
NODE_INITLOCK(&qpdb.node_locks[0].lock);
NODE_INITLOCK(&qpdb.node_locks[0]);
isc_buffer_constinit(&b, str1, strlen(str1));
isc_buffer_add(&b, strlen(str1));
@@ -217,7 +217,7 @@ ISC_RUN_TEST_IMPL(setownercase) {
/* Retrieve the case to name2 */
dns_rdataset_getownercase(&rdataset, name2);
NODE_DESTROYLOCK(&qpdb.node_locks[0].lock);
NODE_DESTROYLOCK(&qpdb.node_locks[0]);
assert_true(dns_name_caseequal(name1, name2));
}