From d464704f111d211c1f1ff9ef23ef1d755054be00 Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 15 Aug 2007 19:08:43 +0000
Subject: add tag v1_8_5_54

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_8_5_54@12952 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ruby_1_8_5/rubysig.h | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 ruby_1_8_5/rubysig.h

(limited to 'ruby_1_8_5/rubysig.h')

diff --git a/ruby_1_8_5/rubysig.h b/ruby_1_8_5/rubysig.h
new file mode 100644
index 0000000000..7a2ace1bdd
--- /dev/null
+++ b/ruby_1_8_5/rubysig.h
@@ -0,0 +1,105 @@
+/**********************************************************************
+
+  rubysig.h -
+
+  $Author: ocean $
+  $Date: 2005/10/21 10:23:03 $
+  created at: Wed Aug 16 01:15:38 JST 1995
+
+  Copyright (C) 1993-2003 Yukihiro Matsumoto
+
+**********************************************************************/
+
+#ifndef SIG_H
+#define SIG_H
+#include <errno.h>
+
+#ifdef _WIN32
+typedef LONG rb_atomic_t;
+
+# define ATOMIC_TEST(var) InterlockedExchange(&(var), 0)
+# define ATOMIC_SET(var, val) InterlockedExchange(&(var), (val))
+# define ATOMIC_INC(var) InterlockedIncrement(&(var))
+# define ATOMIC_DEC(var) InterlockedDecrement(&(var))
+
+/* Windows doesn't allow interrupt while system calls */
+# define TRAP_BEG do {\
+    int saved_errno = 0;\
+    rb_atomic_t trap_immediate = ATOMIC_SET(rb_trap_immediate, 1)
+# define TRAP_END\
+    ATOMIC_SET(rb_trap_immediate, trap_immediate);\
+    saved_errno = errno;\
+    CHECK_INTS;\
+    errno = saved_errno;\
+} while (0)
+# define RUBY_CRITICAL(statements) do {\
+    rb_w32_enter_critical();\
+    statements;\
+    rb_w32_leave_critical();\
+} while (0)
+#else
+typedef int rb_atomic_t;
+
+# define ATOMIC_TEST(var) ((var) ? ((var) = 0, 1) : 0)
+# define ATOMIC_SET(var, val) ((var) = (val))
+# define ATOMIC_INC(var) (++(var))
+# define ATOMIC_DEC(var) (--(var))
+
+# define TRAP_BEG do {\
+    int saved_errno = 0;\
+    int trap_immediate = rb_trap_immediate;\
+    rb_trap_immediate = 1
+# define TRAP_END rb_trap_immediate = trap_immediate;\
+    saved_errno = errno;\
+    CHECK_INTS;\
+    errno = saved_errno;\
+} while (0)
+
+# define RUBY_CRITICAL(statements) do {\
+    int trap_immediate = rb_trap_immediate;\
+    rb_trap_immediate = 0;\
+    statements;\
+    rb_trap_immediate = trap_immediate;\
+} while (0)
+#endif
+RUBY_EXTERN rb_atomic_t rb_trap_immediate;
+
+RUBY_EXTERN int rb_prohibit_interrupt;
+#define DEFER_INTS (rb_prohibit_interrupt++)
+#define ALLOW_INTS do {\
+    rb_prohibit_interrupt--;\
+    CHECK_INTS;\
+} while (0)
+#define ENABLE_INTS (rb_prohibit_interrupt--)
+
+VALUE rb_with_disable_interrupt _((VALUE(*)(ANYARGS),VALUE));
+
+RUBY_EXTERN rb_atomic_t rb_trap_pending;
+void rb_trap_restore_mask _((void));
+
+RUBY_EXTERN int rb_thread_critical;
+void rb_thread_schedule _((void));
+#if defined(HAVE_SETITIMER) || defined(_THREAD_SAFE)
+RUBY_EXTERN int rb_thread_pending;
+# define CHECK_INTS do {\
+    if (!(rb_prohibit_interrupt || rb_thread_critical)) {\
+        if (rb_thread_pending) rb_thread_schedule();\
+	if (rb_trap_pending) rb_trap_exec();\
+    }\
+} while (0)
+#else
+/* pseudo preemptive thread switching */
+RUBY_EXTERN int rb_thread_tick;
+#define THREAD_TICK 500
+#define CHECK_INTS do {\
+    if (!(rb_prohibit_interrupt || rb_thread_critical)) {\
+	if (rb_thread_tick-- <= 0) {\
+	    rb_thread_tick = THREAD_TICK;\
+            rb_thread_schedule();\
+	}\
+    }\
+    if (rb_trap_pending) rb_trap_exec();\
+} while (0)
+#endif
+
+#endif
-- 
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