fix non-signal-safe exit, and refactor signal handlers

1 files changed, 32 insertions, 0 deletions

diff --git a/include/signal_handler.h b/include/signal_handler.h
new file mode 100644
index 0000000..12ab0a5
--- /dev/null
+++ b/include/signal_handler.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include <signal.h>
+#include <atomic>
+
+#include "all.h"
+
+namespace ov4
+{
+
+typedef void handler_t(int);
+
+inline sigset_t 
+    block_sig_TTOU,
+    block_job,
+    block_io;
+
+inline std::atomic_int exit_code, exit_required_pid;
+
+inline constexpr int SIGNAL_EXIT_CODE_BASE = 128;
+
+void signal_init();
+handler_t *Signal(int signum, handler_t *handler);
+void sigchld_handler(int sig);
+void sigint_handler(int sig);
+void sigtstp_handler(int sig);
+void sigquit_handler(int sig);
+
+int block_all(sigset_t *prev);
+int block_handler(sigset_t *prev);
+
+}