while (ooo_segment_index != OOO_SEGMENT_INVALID_INDEX)
{
seg = pool_elt_at_index (f->ooo_segments, ooo_segment_index);
- s = format (s, "\n %U", format_ooo_segment, seg);
-
+ s = format (s, " %U\n", format_ooo_segment, seg);
ooo_segment_index = seg->next;
}
return s;
}
+u8 *
+format_svm_fifo (u8 * s, va_list * args)
+{
+ svm_fifo_t *f = va_arg (*args, svm_fifo_t *);
+ int verbose = va_arg (*args, int);
+
+ s = format (s, "cursize %u nitems %u has_event %d\n",
+ f->cursize, f->nitems, f->has_event);
+ s = format (s, "head %d tail %d\n", f->head, f->tail);
+
+ if (verbose > 1)
+ s = format
+ (s, "server session %d thread %d client session %d thread %d\n",
+ f->master_session_index, f->master_thread_index,
+ f->client_session_index, f->client_thread_index);
+
+ if (verbose)
+ {
+ s = format (s, "ooo pool %d active elts\n",
+ pool_elts (f->ooo_segments));
+ s = format (s, "%U", format_ooo_list, f);
+ }
+ return s;
+}
+
/** create an svm fifo, in the current heap. Fails vs blow up the process */
svm_fifo_t *
svm_fifo_create (u32 data_size_in_bytes)
u32 index, bytes = 0, diff;
u32 cursize;
- /* read cursize, which can only increase while we're working */
- cursize = svm_fifo_max_dequeue (f);
+ /* current size has not yet been updated */
+ cursize = svm_fifo_max_dequeue (f) + n_bytes_enqueued;
s = pool_elt_at_index (f->ooo_segments, f->ooos_list_head);
+ diff = (f->nitems + (i32) (f->tail - s->start)) % f->nitems;
+ if (diff > cursize)
+ return 0;
+
/* If last tail update overlaps one/multiple ooo segments, remove them */
- diff = (f->nitems + ((int) s->start - f->tail)) % f->nitems;
- while (0 < diff && diff < n_bytes_enqueued)
+ while (0 < diff && diff < cursize)
{
- /* Segment end is beyond the tail. Advance tail and be done */
+ index = s - f->ooo_segments;
+
+ /* Segment end is beyond the tail. Advance tail and remove segment */
if (diff < s->length)
{
f->tail += s->length - diff;
f->tail %= f->nitems;
+ bytes = s->length - diff;
+ ooo_segment_del (f, index);
break;
}
+
/* If we have next go on */
- else if (s->next != OOO_SEGMENT_INVALID_INDEX)
+ if (s->next != OOO_SEGMENT_INVALID_INDEX)
{
- index = s - f->ooo_segments;
s = pool_elt_at_index (f->ooo_segments, s->next);
- diff = (f->nitems + ((int) s->start - f->tail)) % f->nitems;
+ diff = (f->nitems + (i32) (f->tail - s->start)) % f->nitems;
ooo_segment_del (f, index);
}
/* End of search */
else
{
+ ooo_segment_del (f, index);
break;
}
}
}
static int
-svm_fifo_enqueue_internal (svm_fifo_t * f,
- int pid, u32 max_bytes, u8 * copy_from_here)
+svm_fifo_enqueue_internal (svm_fifo_t * f, u32 max_bytes, u8 * copy_from_here)
{
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
u32 cursize, nitems;
}
int
-svm_fifo_enqueue_nowait (svm_fifo_t * f,
- int pid, u32 max_bytes, u8 * copy_from_here)
+svm_fifo_enqueue_nowait (svm_fifo_t * f, u32 max_bytes, u8 * copy_from_here)
{
- return svm_fifo_enqueue_internal (f, pid, max_bytes, copy_from_here);
+ return svm_fifo_enqueue_internal (f, max_bytes, copy_from_here);
}
/**
*/
static int
svm_fifo_enqueue_with_offset_internal (svm_fifo_t * f,
- int pid,
u32 offset,
u32 required_bytes,
u8 * copy_from_here)
u32 normalized_offset;
int rv;
- /* Safety: don't wrap more than nitems/2 */
- ASSERT ((f->nitems + offset - f->tail) % f->nitems < f->nitems / 2);
-
- /* Users would do do well to avoid this */
+ /* Users would do well to avoid this */
if (PREDICT_FALSE (f->tail == (offset % f->nitems)))
{
- rv = svm_fifo_enqueue_internal (f, pid, required_bytes, copy_from_here);
+ rv = svm_fifo_enqueue_internal (f, required_bytes, copy_from_here);
if (rv > 0)
return 0;
return -1;
nitems = f->nitems;
/* Will this request fit? */
- if ((required_bytes + offset) > (nitems - cursize))
+ if ((required_bytes + (offset - f->tail) % nitems) > (nitems - cursize))
return -1;
ooo_segment_add (f, offset, required_bytes);
int
svm_fifo_enqueue_with_offset (svm_fifo_t * f,
- int pid,
u32 offset,
u32 required_bytes, u8 * copy_from_here)
{
- return svm_fifo_enqueue_with_offset_internal
- (f, pid, offset, required_bytes, copy_from_here);
+ return svm_fifo_enqueue_with_offset_internal (f, offset, required_bytes,
+ copy_from_here);
}
static int
-svm_fifo_dequeue_internal (svm_fifo_t * f,
- int pid, u32 max_bytes, u8 * copy_here)
+svm_fifo_dequeue_internal (svm_fifo_t * f, u32 max_bytes, u8 * copy_here)
{
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
u32 cursize, nitems;
}
int
-svm_fifo_dequeue_nowait (svm_fifo_t * f,
- int pid, u32 max_bytes, u8 * copy_here)
+svm_fifo_dequeue_nowait (svm_fifo_t * f, u32 max_bytes, u8 * copy_here)
{
- return svm_fifo_dequeue_internal (f, pid, max_bytes, copy_here);
+ return svm_fifo_dequeue_internal (f, max_bytes, copy_here);
}
int
-svm_fifo_peek (svm_fifo_t * f, int pid, u32 offset, u32 max_bytes,
+svm_fifo_peek (svm_fifo_t * f, u32 relative_offset, u32 max_bytes,
u8 * copy_here)
{
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
return -2; /* nothing in the fifo */
nitems = f->nitems;
- real_head = f->head + offset;
+ real_head = f->head + relative_offset;
real_head = real_head >= nitems ? real_head - nitems : real_head;
/* Number of bytes we're going to copy */
}
int
-svm_fifo_dequeue_drop (svm_fifo_t * f, int pid, u32 max_bytes)
+svm_fifo_dequeue_drop (svm_fifo_t * f, u32 max_bytes)
{
u32 total_drop_bytes, first_drop_bytes, second_drop_bytes;
u32 cursize, nitems;
return total_drop_bytes;
}
-u8 *
-format_svm_fifo (u8 * s, va_list * args)
-{
- svm_fifo_t *f = va_arg (*args, svm_fifo_t *);
- int verbose = va_arg (*args, int);
-
- s = format (s, "cursize %u nitems %u has_event %d\n",
- f->cursize, f->nitems, f->has_event);
- s = format (s, "head %d tail %d\n", f->head, f->tail);
-
- if (verbose > 1)
- s = format
- (s, "server session %d thread %d client session %d thread %d\n",
- f->server_session_index, f->server_thread_index,
- f->client_session_index, f->client_thread_index);
-
- if (verbose)
- {
- ooo_segment_t *seg;
- u32 seg_index;
-
- s = format (s, "ooo pool %d active elts\n",
- pool_elts (f->ooo_segments));
-
- seg_index = f->ooos_list_head;
-
- while (seg_index != OOO_SEGMENT_INVALID_INDEX)
- {
- seg = pool_elt_at_index (f->ooo_segments, seg_index);
- s = format (s, " pos %u, len %u next %d\n",
- seg->start, seg->length, seg->next);
- seg_index = seg->next;
- }
- }
- return s;
-}
-
u32
svm_fifo_number_ooo_segments (svm_fifo_t * f)
{
Code Review / vpp.git / blobdiff