SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / tests / utils / testapp / gen-ust-nevents / gen-ust-nevents.c

diff --git a/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c b/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
index 52e5f3cb952fb0e69a596b7d9d0e36a974125306..3293687314aea3e213f470361d5a137bd0b5eace 100644 (file)
--- a/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
+++ b/tests/utils/testapp/gen-ust-nevents/gen-ust-nevents.c
@@ -7,6 +7,7 @@
 
 #define _LGPL_SOURCE
 #include <arpa/inet.h>
+#include <getopt.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -21,9 +22,17 @@
 #define TRACEPOINT_DEFINE
 #include "tp.h"
 
+static struct option long_options[] =
+{
+       /* These options set a flag. */
+       {"iter", required_argument, 0, 'i'},
+       {"wait", required_argument, 0, 'w'},
+       {0, 0, 0, 0}
+};
+
 int main(int argc, char **argv)
 {
-       int i, netint, ret = 0;
+       int i, netint, ret = 0, option_index, option;
        long values[] = { 1, 2, 3 };
        char text[10] = "test";
        double dbl = 2.0;
@@ -31,19 +40,29 @@ int main(int argc, char **argv)
        unsigned int nr_iter = 100;
        useconds_t nr_usec = 0;
 
+       while ((option = getopt_long(argc, argv, "i:w:",
+                       long_options, &option_index)) != -1) {
+               switch (option) {
+               case 'i':
+                       nr_iter = atoi(optarg);
+                       break;
+               case 'w':
+                       nr_usec = atoi(optarg);
+                       break;
+               case '?':
+                       /* getopt_long already printed an error message. */
+                       break;
+               default:
+                       ret = -1;
+                       goto end;
+               }
+       }
+
        if (set_signal_handler()) {
                ret = -1;
                goto end;
        }
 
-       if (argc >= 2) {
-               nr_iter = atoi(argv[1]);
-       }
-
-       if (argc == 3) {
-               /* By default, don't wait unless user specifies. */
-               nr_usec = atoi(argv[2]);
-       }
 
        for (i = 0; i < nr_iter; i++) {
                netint = htonl(i);