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-rw-r--r--src/signal_check.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/src/signal_check.c b/src/signal_check.c
new file mode 100644
index 000000000..3926ae7b0
--- /dev/null
+++ b/src/signal_check.c
@@ -0,0 +1,38 @@
+#include "signal_check.h"
+
+volatile sig_atomic_t __caught_signals[NSIG];
+
+static void __signal_handler(int sig)
+{
+ __caught_signals[sig] = 1;
+}
+
+static void __set_signal_handler(int sig, void (* handler)(int))
+{
+ struct sigaction act;
+ act.sa_flags = 0;
+ act.sa_handler = handler;
+ sigaction(sig, &act, 0);
+}
+
+void signal_handle(int sig)
+{
+ __set_signal_handler(sig, __signal_handler);
+}
+
+void signal_unhandle(int sig)
+{
+ signal_clear(sig);
+ __set_signal_handler(sig, SIG_DFL);
+}
+
+int signal_is_pending(int sig)
+{
+ return __caught_signals[sig];
+}
+
+void signal_clear(int sig)
+{
+ __caught_signals[sig] = 0;
+}
+