| 1 | #include <stdio.h> |
| 2 | #include <unistd.h> |
| 3 | #include <sys/mman.h> |
| 4 | |
| 5 | #include "../libmarkers/marker.h" |
| 6 | |
| 7 | void probe(const struct marker *mdata, |
| 8 | void *probe_private, void *call_private, |
| 9 | const char *fmt, va_list *args) |
| 10 | { |
| 11 | printf("In probe\n"); |
| 12 | } |
| 13 | |
| 14 | void try_map() |
| 15 | { |
| 16 | char *m; |
| 17 | |
| 18 | /* maybe add MAP_LOCKED */ |
| 19 | m = mmap(NULL, 4096, PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE , -1, 0); |
| 20 | if(m == (char*)-1) { |
| 21 | perror("mmap"); |
| 22 | return; |
| 23 | } |
| 24 | |
| 25 | printf("The mapping is at %p.\n", m); |
| 26 | strcpy(m, "Hello, Mapping!"); |
| 27 | } |
| 28 | |
| 29 | int main() |
| 30 | { |
| 31 | //ltt_trace_create(); |
| 32 | |
| 33 | try_map(); |
| 34 | |
| 35 | printf("Hello, World!\n"); |
| 36 | |
| 37 | marker_probe_register("abc", "testmark", "", probe, NULL); |
| 38 | |
| 39 | trace_mark(abc, testmark, "", MARK_NOARGS); |
| 40 | |
| 41 | scanf("%*s"); |
| 42 | |
| 43 | return 0; |
| 44 | } |