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-rw-r--r--test/test_mem_cache_write_free.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/test/test_mem_cache_write_free.c b/test/test_mem_cache_write_free.c
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+++ b/test/test_mem_cache_write_free.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2010 Richard Braun.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define _GNU_SOURCE
+#include <sched.h>
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+
+#include "../mem.h"
+#include "../macros.h"
+
+struct obj {
+ unsigned long nr_refs;
+ char name[16];
+};
+
+static void obj_ctor(void *ptr)
+{
+ struct obj *obj;
+
+ obj = ptr;
+ obj->nr_refs = 0;
+}
+
+static void obj_print(struct obj *obj)
+{
+ unsigned char *ptr, *end;
+
+ printf("buffer content: ");
+
+ for (ptr = (unsigned char *)obj, end = ptr + sizeof(*obj);
+ ptr < end;
+ ptr++)
+ printf("%02x", *ptr);
+
+ printf("\n");
+}
+
+int main(int argc, char *argv[])
+{
+ struct mem_cache *obj_cache;
+ struct obj *obj;
+ cpu_set_t cpu_set;
+
+ (void)argc;
+ (void)argv;
+
+ printf("binding to CPU 0\n");
+ CPU_ZERO(&cpu_set);
+ CPU_SET(0, &cpu_set);
+ sched_setaffinity(0, sizeof(cpu_set), &cpu_set);
+
+ mem_init();
+
+ obj_cache = mem_cache_create("obj", sizeof(struct obj), 0,
+ obj_ctor, NULL, MEM_CACHE_VERIFY);
+
+ printf("doing normal alloc+free:\n");
+ obj = mem_cache_alloc(obj_cache);
+ mem_cache_free(obj_cache, obj);
+
+ mem_cache_info(obj_cache);
+
+ obj_print(obj);
+
+ printf("doing write on free object:\n");
+ memset((void *)obj + 3, 0x89, 5);
+
+ obj_print(obj);
+
+ printf("trying normal alloc+free on same CPU (should fail):\n");
+
+ obj = mem_cache_alloc(obj_cache);
+ mem_cache_free(obj_cache, obj);
+
+ printf("done\n");
+
+ return 0;
+}