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-rw-r--r--src/svm/svm_fifo_segment.c101
-rw-r--r--src/svm/svm_fifo_segment.h4
2 files changed, 102 insertions, 3 deletions
diff --git a/src/svm/svm_fifo_segment.c b/src/svm/svm_fifo_segment.c
index 97d9976b39e..3bdd2b28ebb 100644
--- a/src/svm/svm_fifo_segment.c
+++ b/src/svm/svm_fifo_segment.c
@@ -221,13 +221,13 @@ svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t * a)
u8 **heaps = 0;
mheap_t *heap_header;
int segment_count = 1;
+ u32 rnd_size = 0;
int i;
if (a->private_segment_count && a->private_segment_size)
{
u8 *heap;
u32 pagesize = clib_mem_get_page_size ();
- u32 rnd_size;
rnd_size = (a->private_segment_size + (pagesize - 1)) & ~pagesize;
for (i = 0; i < a->private_segment_count; i++)
@@ -246,7 +246,8 @@ svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t * a)
}
/* Spread preallocated fifo pairs across segments */
- a->preallocated_fifo_pairs /= segment_count;
+ a->preallocated_fifo_pairs =
+ (a->preallocated_fifo_pairs + segment_count - 1) / segment_count;
/* Allocate segments */
for (i = 0; i < segment_count; i++)
@@ -254,7 +255,7 @@ svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t * a)
pool_get (sm->segments, s);
memset (s, 0, sizeof (*s));
- s->ssvm.ssvm_size = ~0;
+ s->ssvm.ssvm_size = rnd_size;
s->ssvm.i_am_master = 1;
s->ssvm.my_pid = getpid ();
s->ssvm.name = format (0, "%s%c", a->segment_name, 0);
@@ -536,6 +537,100 @@ svm_fifo_segment_num_fifos (svm_fifo_segment_private_t * fifo_segment)
return fifo_segment->h->n_active_fifos;
}
+u32
+svm_fifo_segment_num_free_fifos (svm_fifo_segment_private_t * fifo_segment,
+ u32 fifo_size_in_bytes)
+{
+ ssvm_shared_header_t *sh;
+ svm_fifo_segment_header_t *fsh;
+ svm_fifo_t *f;
+ int i;
+ u32 count = 0, rounded_data_size, freelist_index;
+
+ sh = fifo_segment->ssvm.sh;
+ fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
+
+ /* Count all free fifos? */
+ if (fifo_size_in_bytes == ~0)
+ {
+ for (i = 0; i < vec_len (fsh->free_fifos); i++)
+ {
+ f = fsh->free_fifos[i];
+ if (f == 0)
+ continue;
+
+ while (f)
+ {
+ f = f->next;
+ count++;
+ }
+ }
+ return count;
+ }
+
+ rounded_data_size = (1 << (max_log2 (fifo_size_in_bytes)));
+ freelist_index = max_log2 (rounded_data_size)
+ - max_log2 (FIFO_SEGMENT_MIN_FIFO_SIZE);
+
+ if (freelist_index > vec_len (fsh->free_fifos))
+ return 0;
+
+ f = fsh->free_fifos[freelist_index];
+ if (f == 0)
+ return 0;
+
+ while (f)
+ {
+ f = f->next;
+ count++;
+ }
+ return count;
+}
+
+/**
+ * Segment format function
+ */
+u8 *
+format_svm_fifo_segment (u8 * s, va_list * args)
+{
+ svm_fifo_segment_private_t *sp
+ = va_arg (*args, svm_fifo_segment_private_t *);
+ int verbose = va_arg (*args, int);
+ ssvm_shared_header_t *sh;
+ svm_fifo_segment_header_t *fsh;
+ svm_fifo_t *f;
+ int i;
+ u32 count;
+ uword indent = format_get_indent (s) + 2;
+
+ sh = sp->ssvm.sh;
+ fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
+
+ s = format (s, "%USegment Heap: %U\n", format_white_space, indent,
+ format_mheap, sh->heap, verbose);
+ s = format (s, "%U segment has %u active fifos\n",
+ format_white_space, indent, svm_fifo_segment_num_fifos (sp));
+
+ for (i = 0; i < vec_len (fsh->free_fifos); i++)
+ {
+ f = fsh->free_fifos[i];
+ if (f == 0)
+ continue;
+ count = 0;
+ while (f)
+ {
+ f = f->next;
+ count++;
+ }
+
+ s = format (s, "%U%-5u Kb: %u free",
+ format_white_space, indent + 2,
+ 1 << (i + max_log2 (FIFO_SEGMENT_MIN_FIFO_SIZE) - 10),
+ count);
+ }
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/svm/svm_fifo_segment.h b/src/svm/svm_fifo_segment.h
index 5cc4754a0a0..7c97e9b489f 100644
--- a/src/svm/svm_fifo_segment.h
+++ b/src/svm/svm_fifo_segment.h
@@ -118,7 +118,11 @@ void svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s,
void svm_fifo_segment_init (u64 baseva, u32 timeout_in_seconds);
u32 svm_fifo_segment_index (svm_fifo_segment_private_t * s);
u32 svm_fifo_segment_num_fifos (svm_fifo_segment_private_t * fifo_segment);
+u32 svm_fifo_segment_num_free_fifos (svm_fifo_segment_private_t *
+ fifo_segment, u32 fifo_size_in_bytes);
+
svm_fifo_segment_private_t *svm_fifo_segment_segments_pool (void);
+format_function_t format_svm_fifo_segment;
#endif /* __included_ssvm_fifo_segment_h__ */