--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/signals.c	Thu Sep 25 22:16:22 2008 +0300
@@ -0,0 +1,109 @@
+#define _GNU_SOURCE
+#include <signal.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "signals.h"
+#include "common.h"
+
+struct signals {
+    struct event_base *ev_base;
+
+    struct signal {
+        struct event *ev;
+    } sig_list[MAX_SIGNALS];
+
+    int sig_count;
+};
+
+void signals_loopexit (int signal, short event, void *arg) {
+    struct signals *signals = arg;
+
+    INFO("[signal] caught %s: exiting the event loop", strsignal(signal));
+    
+    if (event_base_loopexit(signals->ev_base, NULL))
+        FATAL("event_base_loopexit");
+}
+
+void signals_ignore (int signal, short event, void *arg) {
+    struct signals *signals = arg;
+
+    (void) signals;
+    
+    /* ignore */
+}
+
+struct signals *signals_alloc (struct event_base *ev_base) {
+    struct signals *signals = NULL;
+
+    if ((signals = calloc(1, sizeof(*signals))) == NULL)
+        ERROR("calloc");
+    
+    // simple attributes
+    signals->ev_base = ev_base;
+
+    // done
+    return signals;
+
+error:
+    return NULL;
+}
+
+int signals_add (struct signals *signals, int sigval, void (*sig_handler)(evutil_socket_t, short, void *)) {
+    struct signal *sig_info;
+    
+    // find our sig_info
+    assert(signals->sig_count < MAX_SIGNALS);
+    sig_info = &signals->sig_list[signals->sig_count++];
+    
+    // set up the libevent signal events
+    if ((sig_info->ev = signal_new(signals->ev_base, sigval, sig_handler, signals)) == NULL)
+        PERROR("signal_new");
+
+    if (signal_add(sig_info->ev, NULL))
+        PERROR("signal_add");
+
+    // success
+    return 0;
+
+error:
+    return -1;
+}
+
+struct signals *signals_default (struct event_base *ev_base) {
+    struct signals *signals = NULL;
+    
+    // alloc signals
+    if ((signals = signals_alloc(ev_base)) == NULL)
+        return NULL;
+    
+    // add the set of default signals
+    if (    signals_add(signals,    SIGPIPE,    &signals_ignore)
+        ||  signals_add(signals,    SIGINT,     &signals_loopexit)
+    ) ERROR("signals_add");
+    
+    // success
+    return signals;
+
+error:
+    if (signals)
+        signals_free(signals);
+
+    return NULL;
+}   
+
+void signals_free (struct signals *signals) {
+    int i;
+    
+    // free all events
+    for (i = 0; i < signals->sig_count; i++) {
+        if (signal_del(signals->sig_list[i].ev))
+            PWARNING("signal_del");
+
+    }
+    
+    // free the info itself
+    free(signals);
+}
+