add debug trace in vxrcu.c (#71)

Reviewed-on: http://13.234.246.121:3000/Neominds/ossl35vx69/pulls/71
Co-authored-by: siddhant <siddhant.singh@neominds.in>
Co-committed-by: siddhant <siddhant.singh@neominds.in>

vxworks-6.9/target/src/openssl/OPENSSL/openssl-3.5.0/crypto/vxrcu.c

@@ -1,6 +1,10 @@
+#include <string.h>
+#include <taskLibCommon.h>
 #include <openssl/crypto.h>
 #include <openssl/vxrcu.h>
 #include <openssl/err.h>
+#include <openssl/trace.h>
+
 
 static CRYPTO_RWLOCK_VX *local_rcu_rwlock = NULL;
 static int is_rwlock_init = 0;
@@ -57,6 +61,7 @@ CRYPTO_RCU_LOCK *ossl_rcu_lock_new(int num_writers, OSSL_LIB_CTX *ctx)
 		ERR_print_errors_fp(stderr);
 		return NULL;
 	}
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_new:: allocated memory for lock.\n", taskIdSelf());
 
 	lock->writer_lock = semMCreate (SEM_Q_PRIORITY | SEM_DELETE_SAFE | SEM_INVERSION_SAFE);
 	if (!(lock->writer_lock))
@@ -65,6 +70,7 @@ CRYPTO_RCU_LOCK *ossl_rcu_lock_new(int num_writers, OSSL_LIB_CTX *ctx)
 		ERR_add_error_data(1, "ossl_rcu_lock_new:: semMCreate failed for writer_lock\n");
 		ERR_print_errors_fp(stderr);
 	}
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_new:: created semaphore for writer_lock.\n", taskIdSelf());
 
 	lock->active_readers = 0;
 
@@ -78,6 +84,7 @@ CRYPTO_RCU_LOCK *ossl_rcu_lock_new(int num_writers, OSSL_LIB_CTX *ctx)
 			ERR_print_errors_fp(stderr);
 			return NULL;
 		}
+		OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_new:: allocated memory for local_rcu_rwlock.\n", taskIdSelf());
 
 		memset (local_rcu_rwlock, sizeof (CRYPTO_RWLOCK_VX), 0);
 		
@@ -90,8 +97,11 @@ CRYPTO_RCU_LOCK *ossl_rcu_lock_new(int num_writers, OSSL_LIB_CTX *ctx)
 		}
 			
 		is_rwlock_init = 1;
+		OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_new:: created semaphore for local_rcu_rwlock and set is_rwlock_init=1.\n",
+					taskIdSelf());
 	}
 	
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_new:: done.\n", taskIdSelf());
 	return lock;
 }
 
@@ -104,6 +114,7 @@ void ossl_rcu_lock_free(CRYPTO_RCU_LOCK *lock)
 		local_rcu_rwlock = NULL;
 		is_rwlock_init = 0;
 	}
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_free:: freed local_rcu_rwlock.\n", taskIdSelf());
 
 	if (!lock) 
 	{
@@ -113,33 +124,41 @@ void ossl_rcu_lock_free(CRYPTO_RCU_LOCK *lock)
 		return;
 	}
 
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_free:: deleting writer_lock and freeing lock.\n", taskIdSelf());
 	semDelete (lock->writer_lock);
 	free(lock);
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_lock_free:: done.\n", taskIdSelf());
 }
 
 void ossl_rcu_read_lock(CRYPTO_RCU_LOCK *lock)
 {
 	vxAtomicInc (&(lock->active_readers));
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_read_lock:: done.\n", taskIdSelf());
 }
 
 void ossl_rcu_read_unlock(CRYPTO_RCU_LOCK *lock)
 {
 	vxAtomicDec (&(lock->active_readers));
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_read_unlock:: done.\n", taskIdSelf());
 }
 
 void ossl_rcu_write_lock(CRYPTO_RCU_LOCK *lock)
 {
 	semMTake (lock->writer_lock, WAIT_FOREVER);
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_write_lock:: done.\n", taskIdSelf());
 }
 
 void ossl_rcu_write_unlock(CRYPTO_RCU_LOCK *lock)
 {
 	semMGive (lock->writer_lock);
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_write_unlock:: done.\n", taskIdSelf());
 }
 
 void *ossl_rcu_uptr_deref(void **p)
 {
 	/* readers just dereference safely */
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_uptr_deref:: returning dereferenced pointer.\n",
+				 taskIdSelf());
 	return *p;
 }
 
@@ -152,6 +171,7 @@ void ossl_rcu_assign_uptr(void **p, void **v)
 	
 	/* publish new pointer immediately */
 	CRYPTO_atomic_load_int(val, ret, local_rcu_rwlock);
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_assign_uptr:: done.\n", taskIdSelf());
 }
 
 void ossl_synchronize_rcu(CRYPTO_RCU_LOCK *lock)
@@ -179,6 +199,8 @@ void ossl_synchronize_rcu(CRYPTO_RCU_LOCK *lock)
         tmpcb->fn(tmpcb->data);
         OPENSSL_free(tmpcb);
     }
+	
+	OSSL_TRACE1 (RCU, "[%08x] ossl_synchronize_rcu:: done.\n", taskIdSelf());
 }
 
 int ossl_rcu_call(CRYPTO_RCU_LOCK *lock, rcu_cb_fn cb, void *data)
@@ -206,6 +228,7 @@ int ossl_rcu_call(CRYPTO_RCU_LOCK *lock, rcu_cb_fn cb, void *data)
     new->next = lock->cb_items;
     lock->cb_items = new;
 
+	OSSL_TRACE1 (RCU, "[%08x] ossl_rcu_call:: done.\n", taskIdSelf());
     return 1;
 }