#ifndef _signals_#define _signals_ #include "misc.h" #if defined(__STDC__) || defined(WIN32) extern volatile int signal_is_pending;extern volatile CODE signal_handler;extern volatile int signal_number;extern int in_blocking_section; #else extern int signal_is_pending;extern CODE signal_handler;extern int signal_number;extern int in_blocking_section; #endif void execute_signal (void);EXTERN void enter_blocking_section (void);EXTERN void leave_blocking_section (void);extern CODE raise_break_exn;#endif /* _signals_ */