change to nanosecond resolution time accounting

1 files changed, 13 insertions, 6 deletions

diff --git a/bin/rt_launch.c b/bin/rt_launch.c
index 186c0fa..94d2dec 100644
--- a/bin/rt_launch.c
+++ b/bin/rt_launch.c
@@ -30,14 +30,16 @@ void usage(char *error) {
                 "\nExamples:"
                 "\n\trt_launch -p 2 10 100 cpu_job"
                 "\n\t  => Launch cpu_job a hard real-time task with "
-                "\n\t     period 100 and weight 0.1 on CPU 2.\n"
+                "\n\t     period 100ms and weight 0.1 on CPU 2.\n"
                 "\n\n",
                 error);
         exit(1);
 }
 
 
-#define OPTSTR "p:c:"
+#define OPTSTR "p:c:v"
+
+#define NS_PER_MS 1000000
 
 int main(int argc, char** argv) 
 {
@@ -46,11 +48,15 @@ int main(int argc, char** argv)
         int period;
         int cpu = 0;
         int opt;
+        int verbose = 0;
         startup_info_t info;
         task_class_t class = RT_CLASS_HARD;
 
         while ((opt = getopt(argc, argv, OPTSTR)) != -1) {
                 switch (opt) {
+                case 'v':
+                        verbose = 1;
+                        break;
                 case 'p':
                         cpu = atoi(optarg);
                         break;
@@ -74,8 +80,8 @@ int main(int argc, char** argv)
 
         if (argc - optind < 3)
                 usage("Arguments missing.");       
-        wcet   = atoi(argv[optind + 0]);
-        period = atoi(argv[optind + 1]);
+        wcet   = atoi(argv[optind + 0]) * NS_PER_MS;
+        period = atoi(argv[optind + 1]) * NS_PER_MS;
         if (wcet <= 0)
         usage("The worst-case execution time must be a "
               "positive number.");
@@ -92,8 +98,9 @@ int main(int argc, char** argv)
         
         if (ret < 0) {
                 perror("Could not create rt child process");
-                return 2;
-        }
+                return 2;       
+        } else if (verbose)
+                printf("%d\n", ret);
 
         return 0;       
 }