adapt selfpipe and signal process to sigchld handler

1 files changed, 32 insertions, 0 deletions

diff --git a/src/signal/handler.cc b/src/signal/handler.cc
new file mode 100644
index 0000000..294ae53
--- /dev/null
+++ b/src/signal/handler.cc
@@ -0,0 +1,32 @@
+#include "signal_handler.h"
+
+#include <print>
+#include <signal.h>
+#include <cstdio>
+
+using namespace std;
+
+namespace ov4
+{
+
+void process_signal()
+{
+    /*
+     * do NOT swap these statements
+     * otherwise, if process then unset flag, and another signal delivered
+     * it won't be processed
+     */
+    if (check_signal_delivered(SIGCHLD))
+    {
+        unset_signal_delivered(SIGCHLD);
+        process_sigchld();
+    }
+}
+
+void process_sigchld()
+{
+    print("hi\r\n");
+    fflush(stdout);
+}
+
+}
\ No newline at end of file