From: chenxuqiang <chenxuqiang3@hisilicon.com>
Date: Tue, 19 Nov 2019 14:04:12 +0000 (+0800)
Subject: test/bench_log: add usage function
X-Git-Tag: v15.1.0~716^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=51ca9190974979949f040c766efb2ada377c395b;p=ceph-ci.git

test/bench_log: add usage function
Currently, the bench_log does not have a usage function, so that when it is used, if no pararmeters are given, a segmentation error will occur. This causes confusion.

Now, we add the usage function and add (argc < 3) conditional judgment.

Signed-off-by: Xuqiang Chen <chenxuqiang3@hisilicon.com>
---

diff --git a/src/test/bench_log.cc b/src/test/bench_log.cc
index 2acbf1de48d..205dfe97b62 100644
--- a/src/test/bench_log.cc
+++ b/src/test/bench_log.cc
@@ -30,8 +30,19 @@ struct T : public Thread {
   }
 };
 
+void usage(const char *name) {
+  cout << name << " <threads> <lines>\n"
+       << "\t threads: the number of threads for this test.\n"
+       << "\t lines: the number of log entries per thread.\n";
+}
+
 int main(int argc, const char **argv)
 {
+  if (argc < 3) {
+    usage(argv[0]);
+    return EXIT_FAILURE;
+  }
+
   int threads = atoi(argv[1]);
   int num = atoi(argv[2]);