dh: update to structure based atomics

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21260)

diff --git a/crypto/dh/dh_lib.c b/crypto/dh/dh_lib.c
index 575442ecebd0223115d60d9cab020adcee6de1d6..f774c043835f13950b2a19b73dcaed73d1ee0a71 100644 (file)
--- a/crypto/dh/dh_lib.c
+++ b/crypto/dh/dh_lib.c
@@ -78,7 +78,6 @@ static DH *dh_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx)
     if (ret == NULL)
         return NULL;
 
-    ret->references = 1;
     ret->lock = CRYPTO_THREAD_lock_new();
     if (ret->lock == NULL) {
         ERR_raise(ERR_LIB_DH, ERR_R_CRYPTO_LIB);
@@ -86,6 +85,9 @@ static DH *dh_new_intern(ENGINE *engine, OSSL_LIB_CTX *libctx)
         return NULL;
     }
 
+    if (!CRYPTO_NEW_REF(&ret->references, 1))
+        goto err;
+
     ret->libctx = libctx;
     ret->meth = DH_get_default_method();
 #if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
@@ -133,7 +135,7 @@ void DH_free(DH *r)
     if (r == NULL)
         return;
 
-    CRYPTO_DOWN_REF(&r->references, &i, r->lock);
+    CRYPTO_DOWN_REF(&r->references, &i);
     REF_PRINT_COUNT("DH", r);
     if (i > 0)
         return;
@@ -149,6 +151,7 @@ void DH_free(DH *r)
 #endif
 
     CRYPTO_THREAD_lock_free(r->lock);
+    CRYPTO_FREE_REF(&r->references);
 
     ossl_ffc_params_cleanup(&r->params);
     BN_clear_free(r->pub_key);
@@ -160,7 +163,7 @@ int DH_up_ref(DH *r)
 {
     int i;
 
-    if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+    if (CRYPTO_UP_REF(&r->references, &i) <= 0)
         return 0;
 
     REF_PRINT_COUNT("DH", r);