diff options
Diffstat (limited to 'sig.h')
-rw-r--r-- | sig.h | 46 |
1 files changed, 35 insertions, 11 deletions
@@ -2,7 +2,7 @@ sig.h - - $Author$ + $Author: matz $ $Date$ created at: Wed Aug 16 01:15:38 JST 1995 @@ -10,19 +10,43 @@ #ifndef SIG_H #define SIG_H -#ifdef SAFE_SIGHANDLE extern int trap_immediate; -# define TRAP_BEG (trap_immediate=1) -# define TRAP_END (trap_immediate=0) -#else -# define TRAP_BEG -# define TRAP_END -#endif +#define TRAP_BEG (trap_immediate=1) +#define TRAP_END (trap_immediate=0) -typedef RETSIGTYPE(*SIGHANDLE)(); -SIGHANDLE sig_beg(); -void sig_end(); +extern int prohibit_interrupt; +#define DEFER_INTS {prohibit_interrupt++;} +#define ALLOW_INTS {prohibit_interrupt--; CHECK_INTS;} extern int trap_pending; +#ifdef THREAD +extern int thread_critical; +#if defined(HAVE_SETITIMER) && !defined(__BOW__) +extern int thread_pending; +void thread_schedule(); +# define CHECK_INTS if (!prohibit_interrupt) {\ + if (trap_pending) rb_trap_exec();\ + if (thread_pending && !thread_critical) thread_schedule();\ +} +# else +/* pseudo preemptive thread switching */ +extern int thread_tick; +#define THREAD_TICK 500 +void thread_schedule(); +# define CHECK_INTS if (!prohibit_interrupt) {\ + if (trap_pending) rb_trap_exec();\ + if (!thread_critical) {\ + if (thread_tick-- <= 0) {\ + thread_tick = THREAD_TICK;\ + thread_schedule();\ + }\ + }\ +} +# endif +#else +# define CHECK_INTS if (!prohibit_interrupt) {\ + if (trap_pending) rb_trap_exec();\ +} +#endif #endif |