RestoreSignalHandler 1113 src/platform-linux.cc       RestoreSignalHandler();
RestoreSignalHandler 1128 src/platform-linux.cc         RestoreSignalHandler();
RestoreSignalHandler  835 src/platform-openbsd.cc       RestoreSignalHandler();
RestoreSignalHandler  850 src/platform-openbsd.cc         RestoreSignalHandler();
RestoreSignalHandler  752 src/platform-solaris.cc       RestoreSignalHandler();
RestoreSignalHandler  767 src/platform-solaris.cc         RestoreSignalHandler();