Libguestfs - Jun 2018 - [PATCH nbdkit] locks: Remove debugging messages about acquiring/releasing locks.

The messages are not really useful to us, but they do bloat the
debugging output of virt-v2v massively:

nbdkit: python[1]: debug: acquire global request lock
nbdkit: python[1]: debug: acquire per-connection request lock
nbdkit: python[1]: debug: acquire unload prevention lock
nbdkit: python[1]: debug: pwrite count=2097152 offset=4628414464 fua=0
nbdkit: python[1]: debug: release unload prevention lock
nbdkit: python[1]: debug: release per-connection request lock
nbdkit: python[1]: debug: release global request lock

We probably need some kind of level of verbosity to deal with this
sort of thing, but that's quite a large change.

Rich.

---
 src/locks.c | 26 ++++++--------------------
 1 file changed, 6 insertions(+), 20 deletions(-)

diff --git a/src/locks.c b/src/locks.c
index bd8fd99..1724b5a 100644
--- a/src/locks.c
+++ b/src/locks.c
@@ -56,53 +56,39 @@ lock_init_thread_model (void)
 void
 lock_connection (void)
 {
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS) {
-    debug ("acquire connection lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS)
     pthread_mutex_lock (&connection_lock);
-  }
 }
 
 void
 unlock_connection (void)
 {
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS) {
-    debug ("release connection lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS)
     pthread_mutex_unlock (&connection_lock);
-  }
 }
 
 void
 lock_request (struct connection *conn)
 {
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS) {
-    debug ("acquire global request lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS)
     pthread_mutex_lock (&all_requests_lock);
-  }
 
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS) {
-    debug ("acquire per-connection request lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS)
     pthread_mutex_lock (connection_get_request_lock (conn));
-  }
 
-  debug ("acquire unload prevention lock");
   pthread_rwlock_rdlock (&unload_prevention_lock);
 }
 
 void
 unlock_request (struct connection *conn)
 {
-  debug ("release unload prevention lock");
   pthread_rwlock_unlock (&unload_prevention_lock);
 
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS) {
-    debug ("release per-connection request lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_REQUESTS)
     pthread_mutex_unlock (connection_get_request_lock (conn));
-  }
 
-  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS) {
-    debug ("release global request lock");
+  if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS)
     pthread_mutex_unlock (&all_requests_lock);
-  }
 }
 
 void
-- 
2.16.2

On 06/06/2018 05:44 AM, Richard W.M. Jones wrote:
> ---
>   src/locks.c | 26 ++++++--------------------
>   1 file changed, 6 insertions(+), 20 deletions(-)
Might be worth reusing part of your 0/1 cover letter in the actual 
commit message; but looks reasonable to me.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org