MINOR: signal: don't block SIGPROF by default

SIGPROF is blocked then restored to default settings, which sometimes
makes profiling harder. Let's not block it by default nor restore it,
it doesn't serve any purpose anyway.

diff --git a/src/signal.c b/src/signal.c
index e1f5a8373fbcdb06a942d9be28e44061529d4888..fb6980b55cf91c10868659936c64d7a1127ba783 100644 (file)
--- a/src/signal.c
+++ b/src/signal.c
@@ -106,6 +106,7 @@ int signal_init()
        memset(signal_queue, 0, sizeof(signal_queue));
        memset(signal_state, 0, sizeof(signal_state));
        sigfillset(&blocked_sig);
+       sigdelset(&blocked_sig, SIGPROF);
        for (sig = 0; sig < MAX_SIGNAL; sig++)
                LIST_INIT(&signal_state[sig].handlers);
 
@@ -120,7 +121,8 @@ void deinit_signals()
        struct sig_handler *sh, *shb;
 
        for (sig = 0; sig < MAX_SIGNAL; sig++) {
-               signal(sig, SIG_DFL);
+               if (sig != SIGPROF)
+                       signal(sig, SIG_DFL);
                list_for_each_entry_safe(sh, shb, &signal_state[sig].handlers, list) {
                        LIST_DEL(&sh->list);
                        pool_free2(pool2_sig_handlers, sh);