xiaoxiang781216 commented on code in PR #3706:
URL: https://github.com/apache/nuttx-apps/pull/3706#discussion_r3789196372
##########
testing/libc/arch_libc/arch_libc_bench.c:
##########
@@ -397,6 +445,14 @@ int arch_libc_bench(void)
return 1;
}
+ if (!bench_pick_clock())
Review Comment:
move before line 438 and remove line 451-452
##########
testing/libc/arch_libc/arch_libc_bench.c:
##########
@@ -0,0 +1,424 @@
+/****************************************************************************
+ * apps/testing/libc/arch_libc/arch_libc_bench.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/* Throughput for the string and memory functions a machine directory may
+ * override, across a size sweep and every source/destination alignment
+ * pair. A machine implementation usually takes its wide path only when
+ * the pointers satisfy some alignment condition, so a single aligned size
+ * reports the best case and hides what the rest of the input space costs.
+ *
+ * Each measurement reports MB/s, which compares across machines, and
+ * cycles per byte from perf_gettime(), which does not depend on the
+ * timebase being calibrated. Both come from one timed loop.
+ *
+ * Two ways a benchmark of these functions measures nothing are defeated
+ * here: the compiler treating a pure call with unchanged arguments as loop
+ * invariant, countered by laundering the pointers through an asm that
+ * claims to change them, and comparison inputs an earlier measurement
+ * scribbled on, countered by preparing the buffers before each timed loop.
+ */
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include <nuttx/clock.h>
+
+#ifdef CONFIG_TESTING_ARCH_LIBC_BENCH
Review Comment:
remove the check
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