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path: root/src/svm/svm_fifo_segment.c
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Diffstat (limited to 'src/svm/svm_fifo_segment.c')
-rw-r--r--src/svm/svm_fifo_segment.c114
1 files changed, 83 insertions, 31 deletions
diff --git a/src/svm/svm_fifo_segment.c b/src/svm/svm_fifo_segment.c
index c4ac235252c..69d4ecb9387 100644
--- a/src/svm/svm_fifo_segment.c
+++ b/src/svm/svm_fifo_segment.c
@@ -35,6 +35,11 @@ preallocate_fifo_pairs (svm_fifo_segment_header_t * fsh,
rx_fifo_size = (sizeof (*f) + a->rx_fifo_size) * a->preallocated_fifo_pairs;
tx_fifo_size = (sizeof (*f) + a->tx_fifo_size) * a->preallocated_fifo_pairs;
+ if (0)
+ clib_warning ("rx_fifo_size %u (%d mb), tx_fifo_size %u (%d mb)",
+ rx_fifo_size, rx_fifo_size >> 20,
+ tx_fifo_size, tx_fifo_size >> 20);
+
/* Allocate rx fifo space. May fail. */
rx_fifo_space = clib_mem_alloc_aligned_at_offset
(rx_fifo_size, CLIB_CACHE_LINE_BYTES, 0 /* align_offset */ ,
@@ -129,7 +134,7 @@ svm_fifo_segment_create (svm_fifo_segment_create_args_t * a)
ssvm_pop_heap (oldheap);
sh->ready = 1;
- a->new_segment_index = s - sm->segments;
+ vec_add1 (a->new_segment_indices, s - sm->segments);
return (0);
}
@@ -141,35 +146,81 @@ svm_fifo_segment_create_process_private (svm_fifo_segment_create_args_t * a)
svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
ssvm_shared_header_t *sh;
svm_fifo_segment_header_t *fsh;
+ void *oldheap;
+ u8 **heaps = 0;
+ mheap_t *heap_header;
+ int segment_count = 1;
+ int i;
- /* Allocate a fresh segment */
- pool_get (sm->segments, s);
- memset (s, 0, sizeof (*s));
-
- s->ssvm.ssvm_size = ~0;
- s->ssvm.i_am_master = 1;
- s->ssvm.my_pid = getpid ();
- s->ssvm.name = (u8 *) a->segment_name;
- s->ssvm.requested_va = ~0;
-
- /* Allocate a [sic] shared memory header, in process memory... */
- sh = clib_mem_alloc_aligned (sizeof (*sh), CLIB_CACHE_LINE_BYTES);
- s->ssvm.sh = sh;
+ if (a->private_segment_count && a->private_segment_size)
+ {
+ void *mem;
+ u8 *heap;
+ u32 pagesize = clib_mem_get_page_size ();
+ u32 rnd_size;
- memset (sh, 0, sizeof (*sh));
- sh->heap = clib_mem_get_heap ();
+ for (i = 0; i < a->private_segment_count; i++)
+ {
+ rnd_size = (a->private_segment_size + (pagesize - 1)) & ~pagesize;
+
+ mem = mmap (0, rnd_size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS,
+ -1 /* fd */ , 0 /* offset */ );
+
+ if (mem == MAP_FAILED)
+ {
+ clib_unix_warning ("mmap");
+ return -1;
+ }
+ heap = mheap_alloc (mem, rnd_size);
+ heap_header = mheap_header (heap);
+ heap_header->flags |= MHEAP_FLAG_THREAD_SAFE;
+ vec_add1 (heaps, heap);
+ }
+ segment_count = a->private_segment_count;
+ }
- /* Set up svm_fifo_segment shared header */
- fsh = clib_mem_alloc (sizeof (*fsh));
- memset (fsh, 0, sizeof (*fsh));
- sh->opaque[0] = fsh;
- s->h = fsh;
- fsh->segment_name = format (0, "%s%c", a->segment_name, 0);
+ /* Spread preallocated fifo pairs across segments */
+ a->preallocated_fifo_pairs /= segment_count;
- preallocate_fifo_pairs (fsh, a);
+ /* Allocate segments */
+ for (i = 0; i < segment_count; i++)
+ {
+ pool_get (sm->segments, s);
+ memset (s, 0, sizeof (*s));
+
+ s->ssvm.ssvm_size = ~0;
+ s->ssvm.i_am_master = 1;
+ s->ssvm.my_pid = getpid ();
+ s->ssvm.name = (u8 *) a->segment_name;
+ s->ssvm.requested_va = ~0;
+
+ /* Allocate a [sic] shared memory header, in process memory... */
+ sh = clib_mem_alloc_aligned (sizeof (*sh), CLIB_CACHE_LINE_BYTES);
+ s->ssvm.sh = sh;
+
+ memset (sh, 0, sizeof (*sh));
+ sh->heap = a->private_segment_count ? heaps[i] : clib_mem_get_heap ();
+
+ /* Set up svm_fifo_segment shared header */
+ fsh = clib_mem_alloc (sizeof (*fsh));
+ memset (fsh, 0, sizeof (*fsh));
+ sh->opaque[0] = fsh;
+ s->h = fsh;
+ fsh->segment_name = format (0, "%s%c", a->segment_name, 0);
+
+ if (a->private_segment_count)
+ {
+ oldheap = clib_mem_get_heap ();
+ clib_mem_set_heap (sh->heap);
+ preallocate_fifo_pairs (fsh, a);
+ clib_mem_set_heap (oldheap);
+ }
- sh->ready = 1;
- a->new_segment_index = s - sm->segments;
+ sh->ready = 1;
+ vec_add1 (a->new_segment_indices, s - sm->segments);
+ }
+ vec_free (heaps);
return (0);
}
@@ -205,7 +256,7 @@ svm_fifo_segment_attach (svm_fifo_segment_create_args_t * a)
fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
s->h = fsh;
- a->new_segment_index = s - sm->segments;
+ vec_add1 (a->new_segment_indices, s - sm->segments);
return (0);
}
@@ -230,7 +281,7 @@ svm_fifo_segment_alloc_fifo (svm_fifo_segment_private_t * s,
sh = s->ssvm.sh;
fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
- ssvm_lock (sh, 1, 0);
+ ssvm_lock_non_recursive (sh, 1);
oldheap = ssvm_push_heap (sh);
switch (list_index)
@@ -261,7 +312,7 @@ svm_fifo_segment_alloc_fifo (svm_fifo_segment_private_t * s,
if (PREDICT_FALSE (f == 0))
{
ssvm_pop_heap (oldheap);
- ssvm_unlock (sh);
+ ssvm_unlock_non_recursive (sh);
return (0);
}
@@ -281,7 +332,7 @@ found:
}
ssvm_pop_heap (oldheap);
- ssvm_unlock (sh);
+ ssvm_unlock_non_recursive (sh);
return (f);
}
@@ -293,10 +344,11 @@ svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s, svm_fifo_t * f,
svm_fifo_segment_header_t *fsh;
void *oldheap;
+
sh = s->ssvm.sh;
fsh = (svm_fifo_segment_header_t *) sh->opaque[0];
- ssvm_lock (sh, 1, 0);
+ ssvm_lock_non_recursive (sh, 2);
oldheap = ssvm_push_heap (sh);
switch (list_index)
@@ -325,7 +377,7 @@ svm_fifo_segment_free_fifo (svm_fifo_segment_private_t * s, svm_fifo_t * f,
}
ssvm_pop_heap (oldheap);
- ssvm_unlock (sh);
+ ssvm_unlock_non_recursive (sh);
}
void