void *thr1(void *arg)
{
+ int i;
ltt_thread_init(); /* This init is not required : it will be done
automatically anyways at the first tracing call site */
printf("thread 1, thread id : %lu, pid %lu\n", pthread_self(), getpid());
- while(1) {
+ for(i=0; i<100000; i++) {
trace_user_generic_string("Hello world! Have a nice day.");
- sleep(2);
}
pthread_exit((void*)1);
}
/* Example of a _bad_ thread, which still works with the tracing */
void *thr2(void *arg)
{
+ int i;
/* See ? no init */
printf("thread 2, thread id : %lu, pid %lu\n", pthread_self(), getpid());
- sleep(1);
- while(1) {
+
+ for(i=0; i<100000; i++) {
trace_user_generic_string("Hello world! Have a nice day.");
- sleep(2);
}
/* This thread is a bad citizen : returning like this will cause its cancel
* routines not to be executed. This is still detected by the tracer, but only
void *tret;
printf("Will trace the following string : Hello world! Have a nice day.\n");
- printf("Press CTRL-C to stop.\n");
- printf("No file is created with this example : it logs through a kernel\n");
- printf("system call. See the LTTng lttctl command to start tracing.\n\n");
+ printf("It will stop automatically.\n");
+ printf("See the result file in /tmp/ltt-usertrace.\n");
printf("thread main, thread id : %lu, pid %lu\n", pthread_self(), getpid());
err = pthread_create(&tid1, NULL, thr1, NULL);