xnu-1456.1.26.tar.gz

[apple/xnu.git] / tools / tests / libMicro / memcpy.c

diff --git a/tools/tests/libMicro/memcpy.c b/tools/tests/libMicro/memcpy.c
new file mode 100644 (file)
index 0000000..9a9448c
--- /dev/null
+++ b/tools/tests/libMicro/memcpy.c
@@ -0,0 +1,160 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms
+ * of the Common Development and Distribution License
+ * (the "License").  You may not use this file except
+ * in compliance with the License.
+ *
+ * You can obtain a copy of the license at
+ * src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing
+ * permissions and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL
+ * HEADER in each file and include the License file at
+ * usr/src/OPENSOLARIS.LICENSE.  If applicable,
+ * add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your
+ * own identifying information: Portions Copyright [yyyy]
+ * [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * memcpy
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "libmicro.h"
+
+#define        DEFS                    8192
+#define        DEFR                    1
+
+static long long               opts = DEFS;
+static int                     optf;
+static int                     optt;
+static int                     opta;
+
+typedef struct {
+       char                    *ts_src;
+       char                    *ts_dest;
+       int                     ts_srcsize;
+       int                     ts_destsize;
+} tsd_t;
+
+int
+benchmark_init()
+{
+       lm_tsdsize = sizeof (tsd_t);
+
+       (void) sprintf(lm_optstr, "a:s:ft");
+
+       (void) sprintf(lm_usage,
+           "       [-s buffer-size (default %d)]\n"
+           "       [-a relative alignment (default page aligned)]\n"
+           "       [-f (rotate \"from\" buffer to keep it out of cache)]\n"
+           "       [-t (rotate \"to\" buffer to keep it out of cache)]\n"
+           "notes: measures memcpy()\n",
+           DEFS);
+
+       (void) sprintf(lm_header, "%8s", "size");
+
+       return (0);
+}
+
+int
+benchmark_optswitch(int opt, char *optarg)
+{
+       switch (opt) {
+       case 'f':
+               optf++;
+               break;
+       case 't':
+               optt++;
+               break;
+       case 's':
+               opts = sizetoll(optarg);
+               break;
+       case 'a':
+               opta = sizetoint(optarg);
+               break;
+       default:
+               return (-1);
+       }
+       return (0);
+}
+
+int
+benchmark_initworker(void *tsd)
+{
+       tsd_t                   *ts = (tsd_t *)tsd;
+
+       if (optf)
+               ts->ts_srcsize = 64 * 1024 * 1024;
+       else
+               ts->ts_srcsize = opts + opta;
+
+       if (optt)
+               ts->ts_destsize = 64 * 1024 * 1024;
+       else
+               ts->ts_destsize = (int)opts;
+
+
+       ts->ts_src = opta + (char *)valloc(ts->ts_srcsize);
+       ts->ts_dest = valloc(ts->ts_destsize);
+
+       return (0);
+}
+
+int
+benchmark(void *tsd, result_t *res)
+{
+       tsd_t                   *ts = (tsd_t *)tsd;
+       int                     i;
+       char                    *src = ts->ts_src;
+       char                    *dest = ts->ts_dest;
+
+       int bump = (int)opts;
+
+       if (bump < 1024)
+               bump = 1024; /* avoid prefetched area */
+       for (i = 0; i < lm_optB; i++) {
+               (void) memcpy(dest, src, opts);
+               if (optf) {
+                       src += bump;
+                       if (src + opts > ts->ts_src + ts->ts_srcsize)
+                               src = ts->ts_src;
+               }
+               if (optt) {
+                       dest += bump;
+                       if (dest + opts > ts->ts_dest + ts->ts_destsize)
+                               dest = ts->ts_dest;
+               }
+       }
+
+       res->re_count = i;
+
+       return (0);
+}
+
+char *
+benchmark_result()
+{
+       static char             result[256];
+
+       (void) sprintf(result, "%8lld", opts);
+
+       return (result);
+}