ttrace.2 (2010 09)

ttrace(2) ttrace(2)

(void) close(pfd1[1]);

(void) close(pfd2[0]);

(void) close(pfd2[1]);

(void) execvp(*argv, argv);

ppid = 0;

errexit("exec");

}

if (read(pfd2[0], (void *) &c, sizeof c) != sizeof c) {

errexit("read");

}

dottrace(TT_PROC_SET_EVENT_MASK, pid, 0,

(uint64_t) &ev, sizeof ev, 0);

/* tell the child to exec */

if (write(pfd1[1], (void *) &c, sizeof c) != sizeof c) {

errexit("write");

}

(void) close(pfd1[0]);

(void) close(pfd1[1]);

(void) close(pfd2[0]);

(void) close(pfd2[1]);

}

dottrace(TT_PROC_CONTINUE, pid, 0, 0, 0, 0);

for (;;) {

int rval = ttrace_wait(pid, 0, TTRACE_WAITOK, &st, sizeof st);

if (rval < 0) {

errexit("ttrace_wait");

}

show_event(&st);

if (st.tts_event == TTEVT_EXIT) {

break;

}

dottrace(TT_LWP_CONTINUE, pid, st.tts_lwpid, TT_NOPC,

st.tts_event == TTEVT_SIGNAL ?

(uint64_t) st.tts_u.tts_signal.tts_signo : 0L, 0L);

}

return 0;

}

WARNINGS

If the addr argument to a

TT_LWP_CONTINUE or TT_LWP_SINGLE request is not

TT_NOPC, the

Instruction Address Offset Queue (program counter) is loaded with the values addr and addr+4 before

execution resumes. Otherwise, execution resumes from the point where it was interrupted.

AUTHOR

ttrace was developed by HP.