{
ooo_segment_t *s;
u32 index, bytes = 0, diff;
+ u32 cursize;
+
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
s = pool_elt_at_index (f->ooo_segments, f->ooos_list_head);
/* If tail is adjacent to an ooo segment, 'consume' it */
if (diff == 0)
{
- bytes = ((f->nitems - f->cursize) >= s->length) ? s->length :
- f->nitems - f->cursize;
+ bytes = ((f->nitems - cursize) >= s->length) ? s->length :
+ f->nitems - cursize;
f->tail += bytes;
f->tail %= f->nitems;
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
u32 cursize, nitems;
- if (PREDICT_FALSE (f->cursize == f->nitems))
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
+
+ if (PREDICT_FALSE (cursize == f->nitems))
return -2; /* fifo stuffed */
- /* read cursize, which can only decrease while we're working */
- cursize = f->cursize;
nitems = f->nitems;
/* Number of bytes we're going to copy */
ASSERT (offset > 0);
- /* read cursize, which can only decrease while we're working */
- cursize = f->cursize;
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
nitems = f->nitems;
/* Will this request fit? */
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
u32 cursize, nitems;
- if (PREDICT_FALSE (f->cursize == 0))
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
+ if (PREDICT_FALSE (cursize == 0))
return -2; /* nothing in the fifo */
- /* read cursize, which can only increase while we're working */
- cursize = f->cursize;
nitems = f->nitems;
/* Number of bytes we're going to copy */
u32 total_copy_bytes, first_copy_bytes, second_copy_bytes;
u32 cursize, nitems, real_head;
- if (PREDICT_FALSE (f->cursize == 0))
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
+ if (PREDICT_FALSE (cursize == 0))
return -2; /* nothing in the fifo */
- /* read cursize, which can only increase while we're working */
- cursize = f->cursize;
nitems = f->nitems;
real_head = f->head + offset;
real_head = real_head >= nitems ? real_head - nitems : real_head;
u32 total_drop_bytes, first_drop_bytes, second_drop_bytes;
u32 cursize, nitems;
- if (PREDICT_FALSE (f->cursize == 0))
+ /* read cursize, which can only increase while we're working */
+ cursize = svm_fifo_max_dequeue (f);
+ if (PREDICT_FALSE (cursize == 0))
return -2; /* nothing in the fifo */
- /* read cursize, which can only increase while we're working */
- cursize = f->cursize;
nitems = f->nitems;
/* Number of bytes we're going to drop */