Song Liu wrote:
I am testing the patch set with the following code:#include <stdio.h> #include <unistd.h> volatile short semaphore = 0; int for_uprobe(int c) { printf("%d\n", c + 10); return c + 1; } int main(int argc, char *argv[]) { for_uprobe(argc); while (1) { sleep(1); printf("semaphore %d\n", semaphore); } } I created a uprobe on function for_uprobe(), that uses semaphore as reference counter: echo "p:uprobe_1 /root/a.out:0x49a(0x1036)" >> uprobe_events
Is that even valid? That _looks_ like a semaphore, but I'm not quite sure that it qualifies as an _SDT_ semaphore. Do you see this issue if you instead use the macros provided by <sys/sdt.h> to create SDT markers?
- Naveen
