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| author | David Smith <dsmith@redhat.com> | 2008-06-16 16:41:33 -0500 |
|---|---|---|
| committer | David Smith <dsmith@redhat.com> | 2008-06-16 16:42:18 -0500 |
| commit | 50446916683379f963eaaedb965654d464cd049f (patch) | |
| tree | 3b0640751d09f6450c0d4fd6779da1be0a6769c5 /runtime/task_finder.c | |
| parent | f719ec7cc85a79206bbfe2521786fd84a6608bac (diff) | |
| download | systemtap-steved-50446916683379f963eaaedb965654d464cd049f.tar.gz systemtap-steved-50446916683379f963eaaedb965654d464cd049f.tar.xz systemtap-steved-50446916683379f963eaaedb965654d464cd049f.zip | |
Improved callback handling.
2008-06-16 David Smith <dsmith@redhat.com>
* task_finder.c (stap_start_task_finder): Improved callback
handling.
Diffstat (limited to 'runtime/task_finder.c')
| -rw-r--r-- | runtime/task_finder.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/runtime/task_finder.c b/runtime/task_finder.c index 8448f29c..e853cb2a 100644 --- a/runtime/task_finder.c +++ b/runtime/task_finder.c @@ -654,19 +654,21 @@ stap_start_task_finder(void) cb_tgt = list_entry(cb_node, struct stap_task_finder_target, callback_list); - if (cb_tgt == NULL || cb_tgt->callback == NULL) + if (cb_tgt == NULL) continue; // Call the callback. Assume that if // the thread is a thread group // leader, it is a process. - rc = cb_tgt->callback(tsk, 1, - (tsk->pid == tsk->tgid), - cb_tgt); - if (rc != 0) { - _stp_error("attach callback for %d failed: %d", - (int)tsk->pid, rc); - goto stf_err; + if (cb_tgt->callback != NULL) { + rc = cb_tgt->callback(tsk, 1, + (tsk->pid == tsk->tgid), + cb_tgt); + if (rc != 0) { + _stp_error("attach callback for %d failed: %d", + (int)tsk->pid, rc); + goto stf_err; + } } // Set up events we need for attached tasks. |