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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1040 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/**********************************************************************
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rubysig.h -
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$Author$
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$Date$
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created at: Wed Aug 16 01:15:38 JST 1995
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Copyright (C) 1993-2000 Yukihiro Matsumoto
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**********************************************************************/
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#ifndef SIG_H
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#define SIG_H
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#ifdef NT
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typedef LONG rb_atomic_t;
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# define ATOMIC_TEST(var) InterlockedExchange(&(var), 0)
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# define ATOMIC_SET(var, val) InterlockedExchange(&(var), (val))
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# define ATOMIC_INC(var) InterlockedIncrement(&(var))
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# define ATOMIC_DEC(var) InterlockedDecrement(&(var))
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/* Windows doesn't allow interrupt while system calls */
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# define TRAP_BEG win32_enter_syscall()
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# define TRAP_END win32_leave_syscall()
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# define RUBY_CRITICAL(statements) do {\
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win32_disable_interrupt();\
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statements;\
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win32_enable_interrupt();\
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} while (0)
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#else
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typedef int rb_atomic_t;
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# define ATOMIC_TEST(var) ((var) ? ((var) = 0, 1) : 0)
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# define ATOMIC_SET(var, val) ((var) = (val))
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# define ATOMIC_INC(var) (++(var))
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# define ATOMIC_DEC(var) (--(var))
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# define TRAP_BEG do {\
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int trap_immediate = rb_trap_immediate;\
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rb_trap_immediate = 1;
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# define TRAP_END rb_trap_immediate = trap_immediate;\
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} while (0)
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# define RUBY_CRITICAL(statements) do {\
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int trap_immediate = rb_trap_immediate;\
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rb_trap_immediate = 0;\
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statements;\
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rb_trap_immediate = trap_immediate;\
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} while (0)
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#endif
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EXTERN rb_atomic_t rb_trap_immediate;
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EXTERN int rb_prohibit_interrupt;
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#define DEFER_INTS {rb_prohibit_interrupt++;}
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#define ALLOW_INTS {rb_prohibit_interrupt--; CHECK_INTS;}
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#define ENABLE_INTS {rb_prohibit_interrupt--;}
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VALUE rb_with_disable_interrupt _((VALUE(*)(),VALUE));
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EXTERN rb_atomic_t rb_trap_pending;
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void rb_trap_restore_mask _((void));
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EXTERN int rb_thread_critical;
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void rb_thread_schedule _((void));
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#if defined(HAVE_SETITIMER) && !defined(__BOW__)
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EXTERN int rb_thread_pending;
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# define CHECK_INTS if (!rb_prohibit_interrupt) {\
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if (rb_trap_pending) rb_trap_exec();\
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if (rb_thread_pending && !rb_thread_critical) rb_thread_schedule();\
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}
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#else
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/* pseudo preemptive thread switching */
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EXTERN int rb_thread_tick;
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#define THREAD_TICK 500
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#define CHECK_INTS if (!rb_prohibit_interrupt) {\
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if (rb_trap_pending) rb_trap_exec();\
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if (!rb_thread_critical) {\
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if (rb_thread_tick-- <= 0) {\
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rb_thread_tick = THREAD_TICK;\
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rb_thread_schedule();\
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}\
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}\
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}
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#endif
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#endif
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