48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
extern int Intr_Was_Ignored;
|
|
extern unsigned long Intr_Level;
|
|
|
|
#ifdef POSIX_SIGNALS
|
|
extern sigset_t Sigset_Old, Sigset_Block;
|
|
#else
|
|
#ifdef BSD_SIGNALS
|
|
extern int Sigmask_Old, Sigmask_Block;
|
|
#else
|
|
C_LINKAGE_BEGIN
|
|
extern void Intr_Handler P_((int));
|
|
C_LINKAGE_END
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef BSD_SIGNALS
|
|
# ifndef sigmask
|
|
# define sigmask(n) (1 << ((n)-1))
|
|
# endif
|
|
#endif
|
|
|
|
#define Disable_Interrupts {\
|
|
if (Intr_Level++ == 0) Force_Disable_Interrupts;\
|
|
}
|
|
|
|
#define Enable_Interrupts {\
|
|
if (Intr_Level > 0 && --Intr_Level == 0) Force_Enable_Interrupts;\
|
|
}
|
|
|
|
#ifdef BSD_SIGNALS
|
|
#define Force_Disable_Interrupts (void)sigblock (Sigmask_Block)
|
|
#define Force_Enable_Interrupts (void)sigsetmask (Sigmask_Old)
|
|
#else
|
|
#ifdef POSIX_SIGNALS
|
|
#define Force_Disable_Interrupts (void)sigprocmask (SIG_BLOCK, &Sigset_Block,\
|
|
(sigset_t *)0)
|
|
#define Force_Enable_Interrupts (void)sigprocmask (SIG_SETMASK, &Sigset_Old,\
|
|
(sigset_t *)0)
|
|
#else
|
|
#define Force_Disable_Interrupts {\
|
|
if (!Intr_Was_Ignored) (void)signal (SIGINT, SIG_IGN);\
|
|
}
|
|
#define Force_Enable_Interrupts {\
|
|
if (!Intr_Was_Ignored) (void)signal (SIGINT, Intr_Handler);\
|
|
}
|
|
#endif
|
|
#endif
|