add release_ts utility

2 files changed, 54 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 8ac8f38..fe850a7 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ LIBS= ./liblitmus.a
 LIB_OBJ=  litmus.o syscalls.o sched_trace.o task.o kernel_iface.o
 
 TARGETS = run rt_launch liblitmus.a \
-          wait_test np_test stdump mode_test base_task base_mt_task
+          wait_test np_test stdump mode_test base_task base_mt_task release_ts
 
 vpath %.h include/
 vpath %.c src/ bin/
@@ -40,6 +40,9 @@ run: run.o ${LIBS}
 rt_launch: liblitmus.a litmus.h rt_launch.o
         cc -static -o rt_launch  rt_launch.o ${LIBS}
 
+release_ts: liblitmus.a litmus.h release_ts.o
+        cc -static -o release_ts release_ts.o ${LIBS}
+
 stdump: liblitmus.a litmus.h sched_trace.h stdump.o
         cc -o stdump  stdump.o ${LIBS}
 
diff --git a/bin/release_ts.c b/bin/release_ts.c
new file mode 100644
index 0000000..4d4c9e8
--- /dev/null
+++ b/bin/release_ts.c
@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "litmus.h"
+
+#define OPTSTR "d:"
+#define NS_PER_MS 1000000
+
+void usage(char *error) {
+        fprintf(stderr,
+                "%s\n"
+                "Usage: release_ts [-d <delay in ms>]\n",
+                error);
+        exit(1);
+}
+
+
+int main(int argc, char** argv)
+{
+        int released;
+        lt_t delay = ms2lt(1000);
+        int opt;
+      
+        while ((opt = getopt(argc, argv, OPTSTR)) != -1) {
+                switch (opt) {
+                case 'd':
+                        delay = ms2lt(atoi(optarg));
+                        break;
+                case ':':
+                        usage("Argument missing.");
+                        break;
+                case '?':
+                default:
+                        usage("Bad argument.");
+                        break;
+                }
+        }
+
+        released = release_ts(&delay);
+        if (released < 0) {
+                perror("release task system");
+                exit(1);
+        }
+        
+        printf("Released %d real-time tasks.\n", released);
+
+        return 0;
+}
+