add upstream 11.20

1 files changed, 6 insertions, 0 deletions

diff --git a/zen/shutdown.h b/zen/shutdown.h
index 20354a14..b4d51f69 100644
--- a/zen/shutdown.h
+++ b/zen/shutdown.h
@@ -7,6 +7,7 @@
 #ifndef SHUTDOWN_H_3423847870238407783265
 #define SHUTDOWN_H_3423847870238407783265
 
+#include <functional>
 #include "file_error.h"
 
 
@@ -15,6 +16,11 @@ namespace zen
 void shutdownSystem(); //throw FileError
 void suspendSystem();  //
 [[noreturn]] void terminateProcess(int exitCode);
+
+void onSystemShutdownRegister(const SharedRef<std::function<void()>>& task /*noexcept*/); //save important/user data!
+void onSystemShutdownRegister(      SharedRef<std::function<void()>>&& task) = delete; //no temporaries! shared_ptr should manage life time!
+void onSystemShutdownRunTasks(); //call at appropriate time, e.g. when receiving wxEVT_QUERY_END_SESSION/wxEVT_END_SESSION
+//+ also called by shutdownSystem()
 }
 
 #endif //SHUTDOWN_H_3423847870238407783265