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-rw-r--r--sig.h46
1 files changed, 35 insertions, 11 deletions
diff --git a/sig.h b/sig.h
index da30956..5fc8abe 100644
--- a/sig.h
+++ b/sig.h
@@ -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