diff options
Diffstat (limited to 'rubysig.h')
| -rw-r--r-- | rubysig.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/rubysig.h b/rubysig.h new file mode 100644 index 0000000000..6c6ce571e3 --- /dev/null +++ b/rubysig.h @@ -0,0 +1,54 @@ +/************************************************ + + rubysig.h - + + $Author$ + $Date$ + created at: Wed Aug 16 01:15:38 JST 1995 + +************************************************/ +#ifndef SIG_H +#define SIG_H + +extern int rb_trap_immediate; +#define TRAP_BEG (rb_trap_immediate=1) +#define TRAP_END (rb_trap_immediate=0) + +extern int rb_prohibit_interrupt; +#define DEFER_INTS {rb_prohibit_interrupt++;} +#define ALLOW_INTS {rb_prohibit_interrupt--; CHECK_INTS;} +#define ENABLE_INTS {rb_prohibit_interrupt--;} + +extern int rb_trap_pending; +void rb_trap_restore_mask _((void)); + +#ifdef USE_THREAD +extern int rb_thread_critical; +void rb_thread_schedule _((void)); +#if defined(HAVE_SETITIMER) && !defined(__BOW__) +extern int rb_thread_pending; +# define CHECK_INTS if (!rb_prohibit_interrupt) {\ + if (rb_trap_pending) rb_trap_exec();\ + if (rb_thread_pending && !rb_thread_critical) rb_thread_schedule();\ +} +# else +/* pseudo preemptive thread switching */ +extern int rb_thread_tick; +#define THREAD_TICK 500 +# define CHECK_INTS if (!rb_prohibit_interrupt) {\ + if (rb_trap_pending) rb_trap_exec();\ + if (!rb_thread_critical) {\ + if (rb_thread_tick-- <= 0) {\ + rb_thread_tick = THREAD_TICK;\ + rb_thread_schedule();\ + }\ + }\ +} +# endif +#else +# define CHECK_INTS if (!rb_prohibit_interrupt) {\ + if (rb_trap_pending) rb_trap_exec();\ +} +#endif + +#endif |