gallium/tests: Add test case for u_cache.

3 files changed, 126 insertions, 2 deletions

diff --git a/src/gallium/tests/unit/Makefile b/src/gallium/tests/unit/Makefile
index 018c3a7347..f65958dadd 100644
--- a/src/gallium/tests/unit/Makefile
+++ b/src/gallium/tests/unit/Makefile
@@ -20,8 +20,10 @@ LINKS = \
 
 SOURCES = \
 	pipe_barrier_test.c \
-	u_format_test.c \
-	u_half_test.c
+	u_cache_test.c \
+	u_half_test.c \
+	u_format_test.c
+
 
 OBJECTS = $(SOURCES:.c=.o)
 
diff --git a/src/gallium/tests/unit/SConscript b/src/gallium/tests/unit/SConscript
index 364eb66207..8a9f3504c7 100644
--- a/src/gallium/tests/unit/SConscript
+++ b/src/gallium/tests/unit/SConscript
@@ -6,6 +6,7 @@ env.Prepend(LIBS = [gallium])
 
 progs = [
     'pipe_barrier_test',
+    'u_cache_test',
     'u_format_test',
     'u_half_test'
 ]
diff --git a/src/gallium/tests/unit/u_cache_test.c b/src/gallium/tests/unit/u_cache_test.c
new file mode 100644
index 0000000000..0b62a76523
--- /dev/null
+++ b/src/gallium/tests/unit/u_cache_test.c
@@ -0,0 +1,121 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * 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 VMWARE 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.
+ *
+ **************************************************************************/
+
+
+/*
+ * Test case for u_cache.
+ */
+
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "util/u_cache.h"
+#include "util/u_hash.h"
+
+
+typedef uint32_t cache_test_key;
+typedef uint32_t cache_test_value;
+
+
+static uint32_t
+cache_test_hash(const void *key)
+{
+   return util_hash_crc32(key, sizeof(cache_test_key));
+}
+
+
+static void
+cache_test_destroy(void *key, void *value)
+{
+   free(key);
+   free(value);
+}
+
+
+static int
+cache_test_compare(const void *key1, const void *key2) {
+   return !(key1 == key2);
+}
+
+
+int main() {
+   unsigned cache_size;
+   unsigned cache_count;
+
+   for (cache_size = 2; cache_size < (1 << 15); cache_size *= 2) {
+      for (cache_count = (cache_size << 5); cache_count < (cache_size << 10); cache_count *= 2) {
+         struct util_cache * cache;
+         cache_test_key *key;
+         cache_test_value *value_in;
+         cache_test_value *value_out;
+         int i;
+
+         printf("Testing cache size of %d with %d values.\n", cache_size, cache_count);
+
+         cache = util_cache_create(cache_test_hash,
+                                   cache_test_compare,
+                                   cache_test_destroy,
+                                   cache_size);
+
+         /*
+          * Retrieve a value from an empty cache.
+          */
+         key = malloc(sizeof(cache_test_key));
+         *key = 0xdeadbeef;
+         value_out = (cache_test_value *) util_cache_get(cache, key);
+         assert(value_out == NULL);
+         free(key);
+
+
+         /*
+          * Repeatedly insert into and retrieve values from the cache.
+          */
+         for (i = 0; i < cache_count; i++) {
+            key = malloc(sizeof(cache_test_key));
+            value_in = malloc(sizeof(cache_test_value));
+
+            *key = rand();
+            *value_in = rand();
+            util_cache_set(cache, key, value_in);
+
+            value_out = util_cache_get(cache, key);
+            assert(value_out != NULL);
+            assert(value_in == value_out);
+            assert(*value_in == *value_out);
+         }
+
+         /*
+          * In debug builds, this will trigger a self-check by the cache of
+          * the distribution of hits in its internal cache entries.
+          */
+         util_cache_destroy(cache);
+      }
+   }
+
+   return 0;
+}