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| author | Martin Hunt <hunt@redhat.com> | 2008-05-05 14:22:16 -0400 |
|---|---|---|
| committer | Martin Hunt <hunt@redhat.com> | 2008-05-05 14:22:16 -0400 |
| commit | 3c3355335d4e1f4a195999e784cd88118ca955d8 (patch) | |
| tree | 616167a5c94bc8061171ebfc21a3982acba90238 /runtime/staprun/mainloop.c | |
| parent | 25acff96f6a1398300a08051f329ac76a46207f2 (diff) | |
| download | systemtap-steved-3c3355335d4e1f4a195999e784cd88118ca955d8.tar.gz systemtap-steved-3c3355335d4e1f4a195999e784cd88118ca955d8.tar.xz systemtap-steved-3c3355335d4e1f4a195999e784cd88118ca955d8.zip | |
Fix problem handling SIG_CHLD
Diffstat (limited to 'runtime/staprun/mainloop.c')
| -rw-r--r-- | runtime/staprun/mainloop.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/runtime/staprun/mainloop.c b/runtime/staprun/mainloop.c index 21502ea2..de4479dd 100644 --- a/runtime/staprun/mainloop.c +++ b/runtime/staprun/mainloop.c @@ -68,6 +68,17 @@ static void *signal_thread(void *arg) return NULL; } +static void chld_proc(int signum) +{ + int32_t rc, btype = STP_EXIT; + dbug(2, "chld_proc %d (%s)\n", signum, strsignal(signum)); + pid_t pid = waitpid(-1, NULL, WNOHANG); + if (pid != target_pid) + return; + // send STP_EXIT + rc = write(control_channel, &btype, sizeof(btype)); +} + static void setup_main_signals(void) { pthread_t tid; @@ -82,14 +93,15 @@ static void setup_main_signals(void) memset(&sa, 0, sizeof(sa)); sigfillset(&sa.sa_mask); sa.sa_handler = SIG_IGN; - sigaction(SIGCHLD, &sa, NULL); sigaction(SIGINT, &sa, NULL); sigaction(SIGTERM, &sa, NULL); sigaction(SIGHUP, &sa, NULL); sigaction(SIGQUIT, &sa, NULL); + sa.sa_handler = chld_proc; + sigaction(SIGCHLD, &sa, NULL); + sigemptyset(s); - sigaddset(s, SIGCHLD); sigaddset(s, SIGINT); sigaddset(s, SIGTERM); sigaddset(s, SIGHUP); |