#include <svm/message_queue.h>
#include <vppinfra/mem.h>
+#include <vppinfra/format.h>
#include <sys/eventfd.h>
static inline svm_msg_q_ring_t *
vh = (vec_header_t *) ((u8 *) mq->q + q_sz);
vh->len = cfg->n_rings;
mq->rings = (svm_msg_q_ring_t *) (vh + 1);
- rings_ptr = (u8 *) mq->rings + vec_sz;
+ rings_ptr = (u8 *) mq->rings + sizeof (svm_msg_q_ring_t) * cfg->n_rings;
for (i = 0; i < cfg->n_rings; i++)
{
ring = &mq->rings[i];
msg.ring_index = ring - mq->rings;
msg.elt_index = ring->tail;
ring->tail = (ring->tail + 1) % ring->nitems;
- __sync_fetch_and_add (&ring->cursize, 1);
+ clib_atomic_fetch_add (&ring->cursize, 1);
return msg;
}
{
if (svm_msg_q_try_lock (mq))
return -1;
- if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, ring_index)))
+ if (PREDICT_FALSE (svm_msg_q_is_full (mq)
+ || svm_msg_q_ring_is_full (mq, ring_index)))
{
svm_msg_q_unlock (mq);
return -2;
}
*msg = svm_msg_q_alloc_msg_w_ring (mq, ring_index);
- if (PREDICT_FALSE (svm_msg_q_msg_is_invalid (msg)))
- {
- svm_msg_q_unlock (mq);
- return -2;
- }
}
else
{
svm_msg_q_lock (mq);
- while (svm_msg_q_ring_is_full (mq, ring_index))
+ while (svm_msg_q_is_full (mq)
+ || svm_msg_q_ring_is_full (mq, ring_index))
svm_msg_q_wait (mq);
*msg = svm_msg_q_alloc_msg_w_ring (mq, ring_index);
}
msg.ring_index = ring - mq->rings;
msg.elt_index = ring->tail;
ring->tail = (ring->tail + 1) % ring->nitems;
- __sync_fetch_and_add (&ring->cursize, 1);
+ clib_atomic_fetch_add (&ring->cursize, 1);
break;
}
return msg;
svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg)
{
svm_msg_q_ring_t *ring;
+ int need_signal;
ASSERT (vec_len (mq->rings) > msg->ring_index);
ring = &mq->rings[msg->ring_index];
/* for now, expect messages to be processed in order */
ASSERT (0);
}
- __sync_fetch_and_sub (&ring->cursize, 1);
+
+ need_signal = ring->cursize == ring->nitems;
+ clib_atomic_fetch_sub (&ring->cursize, 1);
+
+ if (PREDICT_FALSE (need_signal))
+ svm_queue_send_signal (mq->q, 0);
}
static int
return 0;
}
+u8 *
+format_svm_msg_q (u8 * s, va_list * args)
+{
+ svm_msg_q_t *mq = va_arg (*args, svm_msg_q_t *);
+ s = format (s, " [Q:%d/%d]", mq->q->cursize, mq->q->maxsize);
+ for (u32 i = 0; i < vec_len (mq->rings); i++)
+ {
+ s = format (s, " [R%d:%d/%d]", i, mq->rings[i].cursize,
+ mq->rings[i].nitems);
+ }
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*