ust: continue work

[ust.git] / hello / hello.c

diff --git a/hello/hello.c b/hello/hello.c
index 990a7fa36041ee47211f4c2a34cd42a58b138295..51979861e28b0e37003c1ec7fb6600887701bb7a 100644 (file)
--- a/hello/hello.c
+++ b/hello/hello.c
@@ -1,9 +1,43 @@
 #include <stdio.h>
 #include <unistd.h>
+#include <sys/mman.h>
+
+#include "../libmarkers/marker.h"
+
+void probe(const struct marker *mdata,
+               void *probe_private, void *call_private,
+               const char *fmt, va_list *args)
+{
+       printf("In probe\n");
+}
+
+void try_map()
+{
+       char *m;
+
+       /* maybe add MAP_LOCKED */
+       m = mmap(NULL, 4096, PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE , -1, 0);
+       if(m == (char*)-1) {
+               perror("mmap");
+               return;
+       }
+
+       printf("The mapping is at %p.\n", m);
+       strcpy(m, "Hello, Mapping!");
+}
 
 int main()
 {
+       //ltt_trace_create();
+
+       try_map();
+
        printf("Hello, World!\n");
+
+       marker_probe_register("abc", "testmark", "", probe, NULL);
+
+       trace_mark(abc, testmark, "", MARK_NOARGS);
+
        scanf("%*s");
 
        return 0;