Use isc_rwlock for isc_result tables

diff --git a/lib/isc/result.c b/lib/isc/result.c
index 0574b3a4137a26e5db6f29951118f55b7ce26c84..c355b03b993e119c88ea39131a53a566028706e6 100644 (file)
--- a/lib/isc/result.c
+++ b/lib/isc/result.c
@@ -15,9 +15,9 @@
 #include <stdlib.h>
 
 #include <isc/lib.h>
-#include <isc/mutex.h>
 #include <isc/once.h>
 #include <isc/resultclass.h>
+#include <isc/rwlock.h>
 #include <isc/util.h>
 
 typedef struct resulttable {
@@ -182,7 +182,7 @@ static const char *identifier[ISC_R_NRESULTS] = {
 static isc_once_t once = ISC_ONCE_INIT;
 static resulttable_list_t description_tables;
 static resulttable_list_t identifier_tables;
-static isc_mutex_t lock;
+static isc_rwlock_t lock;
 
 static isc_result_t
 register_table(resulttable_list_t *tables, unsigned int base,
@@ -207,11 +207,11 @@ register_table(resulttable_list_t *tables, unsigned int base,
        table->set = set;
        ISC_LINK_INIT(table, link);
 
-       LOCK(&lock);
+       RWLOCK(&lock, isc_rwlocktype_write);
 
        ISC_LIST_APPEND(*tables, table, link);
 
-       UNLOCK(&lock);
+       RWUNLOCK(&lock, isc_rwlocktype_write);
 
        return (ISC_R_SUCCESS);
 }
@@ -220,7 +220,7 @@ static void
 initialize_action(void) {
        isc_result_t result;
 
-       isc_mutex_init(&lock);
+       isc_rwlock_init(&lock, 0, 0);
        ISC_LIST_INIT(description_tables);
        ISC_LIST_INIT(identifier_tables);
 
@@ -254,7 +254,7 @@ isc_result_tomany_helper(resulttable_list_t *tables, isc_result_t result) {
 
        initialize();
 
-       LOCK(&lock);
+       RWLOCK(&lock, isc_rwlocktype_read);
 
        text = NULL;
        for (table = ISC_LIST_HEAD(*tables); table != NULL;
@@ -270,7 +270,7 @@ isc_result_tomany_helper(resulttable_list_t *tables, isc_result_t result) {
                text = "(result code text not available)";
        }
 
-       UNLOCK(&lock);
+       RWUNLOCK(&lock, isc_rwlocktype_read);
 
        return (text);
 }