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-rw-r--r--src/mesa/pipe/cso_cache/cso_cache.c164
-rw-r--r--src/mesa/pipe/cso_cache/cso_cache.h72
-rw-r--r--src/mesa/pipe/cso_cache/cso_hash.c381
-rw-r--r--src/mesa/pipe/cso_cache/cso_hash.h62
4 files changed, 679 insertions, 0 deletions
diff --git a/src/mesa/pipe/cso_cache/cso_cache.c b/src/mesa/pipe/cso_cache/cso_cache.c
new file mode 100644
index 00000000000..4aaadf00e64
--- /dev/null
+++ b/src/mesa/pipe/cso_cache/cso_cache.c
@@ -0,0 +1,164 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/* Authors: Zack Rusin <[email protected]>
+ */
+
+#include "cso_cache.h"
+#include "cso_hash.h"
+
+#if 1
+static unsigned hash_key(const void *key, unsigned key_size)
+{
+ unsigned *ikey = (unsigned *)key;
+ unsigned hash = 0, i;
+
+ assert(key_size % 4 == 0);
+
+ /* I'm sure this can be improved on:
+ */
+ for (i = 0; i < key_size/4; i++)
+ hash ^= ikey[i];
+
+ return hash;
+}
+#else
+static unsigned hash_key(const unsigned char *p, int n)
+{
+ unsigned h = 0;
+ unsigned g;
+
+ while (n--) {
+ h = (h << 4) + *p++;
+ if ((g = (h & 0xf0000000)) != 0)
+ h ^= g >> 23;
+ h &= ~g;
+ }
+ return h;
+}
+#endif
+
+unsigned cso_construct_key(void *item, int item_size)
+{
+ return hash_key((item), item_size);
+}
+
+static struct cso_hash *_cso_hash_for_type(struct cso_cache *sc, enum cso_cache_type type)
+{
+ struct cso_hash *hash = 0;
+
+ switch(type) {
+ case CSO_BLEND:
+ hash = sc->blend_hash;
+ case CSO_SAMPLER:
+ hash = sc->sampler_hash;
+ case CSO_DEPTH_STENCIL:
+ hash = sc->depth_stencil_hash;
+ case CSO_RASTERIZER:
+ hash = sc->rasterizer_hash;
+ }
+
+ return hash;
+}
+
+static int _cso_size_for_type(enum cso_cache_type type)
+{
+ switch(type) {
+ case CSO_BLEND:
+ return sizeof(struct pipe_blend_state);
+ case CSO_SAMPLER:
+ return sizeof(struct pipe_sampler_state);
+ case CSO_DEPTH_STENCIL:
+ return sizeof(struct pipe_depth_stencil_state);
+ case CSO_RASTERIZER:
+ return sizeof(struct pipe_rasterizer_state);
+ }
+ return 0;
+}
+
+struct cso_hash_iter
+cso_insert_state(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type,
+ void *state)
+{
+ struct cso_hash *hash = _cso_hash_for_type(sc, type);
+ return cso_hash_insert(hash, hash_key, state);
+}
+
+struct cso_hash_iter
+cso_find_state(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type)
+{
+ struct cso_hash *hash = _cso_hash_for_type(sc, type);
+
+ return cso_hash_find(hash, hash_key);
+}
+
+struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type,
+ void *templ)
+{
+ struct cso_hash_iter iter = cso_find_state(sc, hash_key, type);
+ int size = _cso_size_for_type(type);
+ while (!cso_hash_iter_is_null(iter)) {
+ void *iter_data = cso_hash_iter_data(iter);
+ if (!memcmp(iter_data, templ, size))
+ return iter;
+ iter = cso_hash_iter_next(iter);
+ }
+ return iter;
+}
+
+void * cso_take_state(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type)
+{
+ struct cso_hash *hash = _cso_hash_for_type(sc, type);
+ return cso_hash_take(hash, hash_key);
+}
+
+struct cso_cache *cso_cache_create(void)
+{
+ struct cso_cache *sc = malloc(sizeof(struct cso_cache));
+
+ sc->blend_hash = cso_hash_create();
+ sc->sampler_hash = cso_hash_create();
+ sc->depth_stencil_hash = cso_hash_create();
+ sc->rasterizer_hash = cso_hash_create();
+
+ return sc;
+}
+
+void cso_cache_delete(struct cso_cache *sc)
+{
+ assert(sc);
+ cso_hash_delete(sc->blend_hash);
+ cso_hash_delete(sc->sampler_hash);
+ cso_hash_delete(sc->depth_stencil_hash);
+ cso_hash_delete(sc->rasterizer_hash);
+ free(sc);
+}
+
diff --git a/src/mesa/pipe/cso_cache/cso_cache.h b/src/mesa/pipe/cso_cache/cso_cache.h
new file mode 100644
index 00000000000..23be9cd7135
--- /dev/null
+++ b/src/mesa/pipe/cso_cache/cso_cache.h
@@ -0,0 +1,72 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Zack Rusin <[email protected]>
+ */
+
+#ifndef CSO_CACHE_H
+#define CSO_CACHE_H
+
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+
+
+struct cso_hash;
+
+struct cso_cache {
+ struct cso_hash *blend_hash;
+ struct cso_hash *sampler_hash;
+ struct cso_hash *depth_stencil_hash;
+ struct cso_hash *rasterizer_hash;
+};
+
+enum cso_cache_type {
+ CSO_BLEND,
+ CSO_SAMPLER,
+ CSO_DEPTH_STENCIL,
+ CSO_RASTERIZER
+};
+
+unsigned cso_construct_key(void *item, int item_size);
+
+struct cso_cache *cso_cache_create(void);
+void cso_cache_delete(struct cso_cache *sc);
+
+struct cso_hash_iter cso_insert_state(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type,
+ void *state);
+struct cso_hash_iter cso_find_state(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type);
+struct cso_hash_iter cso_find_state_template(struct cso_cache *sc,
+ unsigned hash_key, enum cso_cache_type type,
+ void *templ);
+void * cso_take_state(struct cso_cache *sc, unsigned hash_key,
+ enum cso_cache_type type);
+
+#endif
diff --git a/src/mesa/pipe/cso_cache/cso_hash.c b/src/mesa/pipe/cso_cache/cso_hash.c
new file mode 100644
index 00000000000..fe033c9e912
--- /dev/null
+++ b/src/mesa/pipe/cso_cache/cso_hash.c
@@ -0,0 +1,381 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Zack Rusin <[email protected]>
+ */
+
+#include "cso_hash.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#define MAX(a, b) ((a > b) ? (a) : (b))
+
+static const int MinNumBits = 4;
+
+static const unsigned char prime_deltas[] = {
+ 0, 0, 1, 3, 1, 5, 3, 3, 1, 9, 7, 5, 3, 9, 25, 3,
+ 1, 21, 3, 21, 7, 15, 9, 5, 3, 29, 15, 0, 0, 0, 0, 0
+};
+
+static int primeForNumBits(int numBits)
+{
+ return (1 << numBits) + prime_deltas[numBits];
+}
+
+/*
+ Returns the smallest integer n such that
+ primeForNumBits(n) >= hint.
+*/
+static int countBits(int hint)
+{
+ int numBits = 0;
+ int bits = hint;
+
+ while (bits > 1) {
+ bits >>= 1;
+ numBits++;
+ }
+
+ if (numBits >= (int)sizeof(prime_deltas)) {
+ numBits = sizeof(prime_deltas) - 1;
+ } else if (primeForNumBits(numBits) < hint) {
+ ++numBits;
+ }
+ return numBits;
+}
+
+struct cso_node {
+ struct cso_node *next;
+ unsigned key;
+ void *value;
+};
+
+struct cso_hash_data {
+ struct cso_node *fakeNext;
+ struct cso_node **buckets;
+ int size;
+ int nodeSize;
+ short userNumBits;
+ short numBits;
+ int numBuckets;
+};
+
+struct cso_hash {
+ union {
+ struct cso_hash_data *d;
+ struct cso_node *e;
+ } data;
+};
+
+static void *cso_data_allocate_node(struct cso_hash_data *hash)
+{
+ return malloc(hash->nodeSize);
+}
+
+static void cso_data_free_node(void *node)
+{
+ free(node);
+}
+
+static struct cso_node *
+cso_hash_create_node(struct cso_hash *hash,
+ unsigned akey, void *avalue,
+ struct cso_node **anextNode)
+{
+ struct cso_node *node = cso_data_allocate_node(hash->data.d);
+ node->key = akey;
+ node->value = avalue;
+
+ node->next = (struct cso_node*)(*anextNode);
+ *anextNode = node;
+ ++hash->data.d->size;
+ return node;
+}
+
+static void cso_data_rehash(struct cso_hash_data *hash, int hint)
+{
+ if (hint < 0) {
+ hint = countBits(-hint);
+ if (hint < MinNumBits)
+ hint = MinNumBits;
+ hash->userNumBits = hint;
+ while (primeForNumBits(hint) < (hash->size >> 1))
+ ++hint;
+ } else if (hint < MinNumBits) {
+ hint = MinNumBits;
+ }
+
+ if (hash->numBits != hint) {
+ struct cso_node *e = (struct cso_node *)(hash);
+ struct cso_node **oldBuckets = hash->buckets;
+ int oldNumBuckets = hash->numBuckets;
+ int i = 0;
+
+ hash->numBits = hint;
+ hash->numBuckets = primeForNumBits(hint);
+ hash->buckets = malloc(sizeof(struct cso_node*) * hash->numBuckets);
+ for (i = 0; i < hash->numBuckets; ++i)
+ hash->buckets[i] = e;
+
+ for (i = 0; i < oldNumBuckets; ++i) {
+ struct cso_node *firstNode = oldBuckets[i];
+ while (firstNode != e) {
+ unsigned h = firstNode->key;
+ struct cso_node *lastNode = firstNode;
+ while (lastNode->next != e && lastNode->next->key == h)
+ lastNode = lastNode->next;
+
+ struct cso_node *afterLastNode = lastNode->next;
+ struct cso_node **beforeFirstNode = &hash->buckets[h % hash->numBuckets];
+ while (*beforeFirstNode != e)
+ beforeFirstNode = &(*beforeFirstNode)->next;
+ lastNode->next = *beforeFirstNode;
+ *beforeFirstNode = firstNode;
+ firstNode = afterLastNode;
+ }
+ }
+ free(oldBuckets);
+ }
+}
+
+static void cso_data_might_grow(struct cso_hash_data *hash)
+{
+ if (hash->size >= hash->numBuckets)
+ cso_data_rehash(hash, hash->numBits + 1);
+}
+
+static void cso_data_has_shrunk(struct cso_hash_data *hash)
+{
+ if (hash->size <= (hash->numBuckets >> 3) &&
+ hash->numBits > hash->userNumBits) {
+ int max = MAX(hash->numBits-2, hash->userNumBits);
+ cso_data_rehash(hash, max);
+ }
+}
+
+static struct cso_node *cso_data_first_node(struct cso_hash_data *hash)
+{
+ struct cso_node *e = (struct cso_node *)(hash);
+ struct cso_node **bucket = hash->buckets;
+ int n = hash->numBuckets;
+ while (n--) {
+ if (*bucket != e)
+ return *bucket;
+ ++bucket;
+ }
+ return e;
+}
+
+static struct cso_node **cso_hash_find_node(struct cso_hash *hash, unsigned akey)
+{
+ struct cso_node **node;
+
+ if (hash->data.d->numBuckets) {
+ node = (struct cso_node **)(&hash->data.d->buckets[akey % hash->data.d->numBuckets]);
+ assert(*node == hash->data.e || (*node)->next);
+ while (*node != hash->data.e && (*node)->key != akey)
+ node = &(*node)->next;
+ } else {
+ node = (struct cso_node **)((const struct cso_node * const *)(&hash->data.e));
+ }
+ return node;
+}
+
+struct cso_hash_iter cso_hash_insert(struct cso_hash *hash,
+ unsigned key, void *data)
+{
+ cso_data_might_grow(hash->data.d);
+
+ struct cso_node **nextNode = cso_hash_find_node(hash, key);
+ struct cso_node *node = cso_hash_create_node(hash, key, data, nextNode);
+ struct cso_hash_iter iter = {hash, node};
+ return iter;
+}
+
+struct cso_hash * cso_hash_create(void)
+{
+ struct cso_hash *hash = malloc(sizeof(struct cso_hash));
+ hash->data.d = malloc(sizeof(struct cso_hash_data));
+ hash->data.d->fakeNext = 0;
+ hash->data.d->buckets = 0;
+ hash->data.d->size = 0;
+ hash->data.d->nodeSize = sizeof(struct cso_node);
+ hash->data.d->userNumBits = MinNumBits;
+ hash->data.d->numBits = 0;
+ hash->data.d->numBuckets = 0;
+
+ return hash;
+}
+
+void cso_hash_delete(struct cso_hash *hash)
+{
+ struct cso_node *e_for_x = (struct cso_node *)(hash->data.d);
+ struct cso_node **bucket = (struct cso_node **)(hash->data.d->buckets);
+ int n = hash->data.d->numBuckets;
+ while (n--) {
+ struct cso_node *cur = *bucket++;
+ while (cur != e_for_x) {
+ struct cso_node *next = cur->next;
+ cso_data_free_node(cur);
+ cur = next;
+ }
+ }
+ free(hash->data.d->buckets);
+ free(hash->data.d);
+ free(hash);
+}
+
+struct cso_hash_iter cso_hash_find(struct cso_hash *hash,
+ unsigned key)
+{
+ struct cso_node **nextNode = cso_hash_find_node(hash, key);
+ struct cso_hash_iter iter = {hash, *nextNode};
+ return iter;
+}
+
+unsigned cso_hash_iter_key(struct cso_hash_iter iter)
+{
+ if (!iter.node || iter.hash->data.e == iter.node)
+ return 0;
+ return iter.node->key;
+}
+
+void * cso_hash_iter_data(struct cso_hash_iter iter)
+{
+ if (!iter.node || iter.hash->data.e == iter.node)
+ return 0;
+ return iter.node->value;
+}
+
+static struct cso_node *cso_hash_data_next(struct cso_node *node)
+{
+ union {
+ struct cso_node *next;
+ struct cso_node *e;
+ struct cso_hash_data *d;
+ } a;
+ a.next = node->next;
+ if (!a.next) {
+ fprintf(stderr, "iterating beyond the last element\n");
+ return 0;
+ }
+ if (a.next->next)
+ return a.next;
+
+ int start = (node->key % a.d->numBuckets) + 1;
+ struct cso_node **bucket = a.d->buckets + start;
+ int n = a.d->numBuckets - start;
+ while (n--) {
+ if (*bucket != a.e)
+ return *bucket;
+ ++bucket;
+ }
+ return a.e;
+}
+
+
+static struct cso_node *cso_hash_data_prev(struct cso_node *node)
+{
+ union {
+ struct cso_node *e;
+ struct cso_hash_data *d;
+ } a;
+
+ a.e = node;
+ while (a.e->next)
+ a.e = a.e->next;
+
+ int start;
+ if (node == a.e)
+ start = a.d->numBuckets - 1;
+ else
+ start = node->key % a.d->numBuckets;
+
+ struct cso_node *sentinel = node;
+ struct cso_node **bucket = a.d->buckets + start;
+ while (start >= 0) {
+ if (*bucket != sentinel) {
+ struct cso_node *prev = *bucket;
+ while (prev->next != sentinel)
+ prev = prev->next;
+ return prev;
+ }
+
+ sentinel = a.e;
+ --bucket;
+ --start;
+ }
+ fprintf(stderr, "iterating backward beyond first element\n");
+ return a.e;
+}
+
+struct cso_hash_iter cso_hash_iter_next(struct cso_hash_iter iter)
+{
+ struct cso_hash_iter next = {iter.hash, cso_hash_data_next(iter.node)};
+ return next;
+}
+
+int cso_hash_iter_is_null(struct cso_hash_iter iter)
+{
+ if (!iter.node || iter.node == iter.hash->data.e)
+ return 1;
+ return 0;
+}
+
+void * cso_hash_take(struct cso_hash *hash,
+ unsigned akey)
+{
+ struct cso_node **node = cso_hash_find_node(hash, akey);
+ if (*node != hash->data.e) {
+ void *t = (*node)->value;
+ struct cso_node *next = (*node)->next;
+ cso_data_free_node(*node);
+ *node = next;
+ --hash->data.d->size;
+ cso_data_has_shrunk(hash->data.d);
+ return t;
+ }
+ return 0;
+}
+
+struct cso_hash_iter cso_hash_iter_prev(struct cso_hash_iter iter)
+{
+ struct cso_hash_iter prev = {iter.hash,
+ cso_hash_data_prev(iter.node)};
+ return prev;
+}
+
+struct cso_hash_iter cso_hash_first_node(struct cso_hash *hash)
+{
+ struct cso_hash_iter iter = {hash, cso_data_first_node(hash->data.d)};
+ return iter;
+}
diff --git a/src/mesa/pipe/cso_cache/cso_hash.h b/src/mesa/pipe/cso_cache/cso_hash.h
new file mode 100644
index 00000000000..b4aa111860f
--- /dev/null
+++ b/src/mesa/pipe/cso_cache/cso_hash.h
@@ -0,0 +1,62 @@
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Zack Rusin <[email protected]>
+ */
+
+#ifndef CSO_HASH_H
+#define CSO_HASH_H
+
+struct cso_hash;
+struct cso_node;
+
+struct cso_hash_iter {
+ struct cso_hash *hash;
+ struct cso_node *node;
+};
+
+struct cso_hash *cso_hash_create(void);
+void cso_hash_delete(struct cso_hash *hash);
+
+struct cso_hash_iter cso_hash_insert(struct cso_hash *hash, unsigned key,
+ void *data);
+void *cso_hash_take(struct cso_hash *hash, unsigned key);
+
+struct cso_hash_iter cso_hash_first_node(struct cso_hash *hash);
+struct cso_hash_iter cso_hash_find(struct cso_hash *hash, unsigned key);
+
+
+int cso_hash_iter_is_null(struct cso_hash_iter iter);
+unsigned cso_hash_iter_key(struct cso_hash_iter iter);
+void *cso_hash_iter_data(struct cso_hash_iter iter);
+
+struct cso_hash_iter cso_hash_iter_next(struct cso_hash_iter iter);
+struct cso_hash_iter cso_hash_iter_prev(struct cso_hash_iter iter);
+
+#endif
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