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-rw-r--r--src/vcl/vcl_private.c17
-rw-r--r--src/vcl/vcl_private.h3
-rw-r--r--src/vcl/vcl_test_server.c3
-rw-r--r--src/vcl/vppcom.c1
4 files changed, 19 insertions, 5 deletions
diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index f997c23aee2..ae4498ef4b5 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -224,7 +224,6 @@ static void
vcl_worker_cleanup (void *arg)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
-
VDBG (0, "cleaning up worker %u", wrk->wrk_index);
vcl_send_app_worker_add_del (0 /* is_add */ );
close (wrk->mqs_epfd);
@@ -246,6 +245,13 @@ vcl_worker_alloc_and_init ()
if (vcl_get_worker_index () != ~0)
return 0;
+ if (pool_elts (vcm->workers) == vcm->cfg.max_workers)
+ {
+ VDBG (0, "max-workers %u limit reached", vcm->cfg.max_workers);
+ return 0;
+ }
+
+ clib_spinlock_lock (&vcm->workers_lock);
wrk = vcl_worker_alloc ();
vcl_set_worker_index (wrk->wrk_index);
@@ -269,10 +275,11 @@ vcl_worker_alloc_and_init ()
vec_reset_length (wrk->mq_msg_vector);
if (wrk->wrk_index == 0)
- return wrk;
+ {
+ clib_spinlock_unlock (&vcm->workers_lock);
+ return wrk;
+ }
- while (vcm->app_state == STATE_APP_ADDING_WORKER)
- ;
vcm->app_state = STATE_APP_ADDING_WORKER;
vcl_send_app_worker_add_del (1 /* is_add */ );
if (vcl_wait_for_app_state_change (STATE_APP_READY))
@@ -284,6 +291,8 @@ vcl_worker_alloc_and_init ()
if (pthread_key_create (&vcl_worker_stop_key, vcl_worker_cleanup))
clib_warning ("failed to add pthread cleanup function");
+ clib_spinlock_unlock (&vcm->workers_lock);
+
VDBG (0, "added worker %u", wrk->wrk_index);
return wrk;
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index ba9094cd96b..75f16ca74c2 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -283,6 +283,9 @@ typedef struct vppcom_main_t_
/** Workers */
vcl_worker_t *workers;
+ /** Lock to protect worker registrations */
+ clib_spinlock_t workers_lock;
+
#ifdef VCL_ELOG
/* VPP Event-logger */
elog_main_t elog_main;
diff --git a/src/vcl/vcl_test_server.c b/src/vcl/vcl_test_server.c
index 8d97d0cfaa6..2fdd7ec157d 100644
--- a/src/vcl/vcl_test_server.c
+++ b/src/vcl/vcl_test_server.c
@@ -467,7 +467,8 @@ vts_worker_init (vcl_test_server_worker_t * wrk)
conn_pool_expand (wrk, SOCK_SERVER_MAX_TEST_CONN + 1);
if (wrk->wrk_index)
- vppcom_worker_register ();
+ if (vppcom_worker_register ())
+ vtfail ("vppcom_worker_register()", 1);
wrk->listen_fd = vppcom_session_create (ssm->cfg.proto,
0 /* is_nonblocking */ );
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index 15622014dcd..645550812b1 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -700,6 +700,7 @@ vppcom_app_create (char *app_name)
svm_fifo_segment_main_init (vcl_cfg->segment_baseva,
20 /* timeout in secs */ );
pool_init_fixed (vcm->workers, vcl_cfg->max_workers);
+ clib_spinlock_init (&vcm->workers_lock);
vcl_worker_alloc_and_init ();
}