/tools/Ruby/lib/ruby/1.8/i386-mingw32/rubysig.h
http://github.com/agross/netopenspace · C Header · 105 lines · 80 code · 12 blank · 13 comment · 17 complexity · 41f0a57076c4562e3b265db39b29aa3e MD5 · raw file
- /**********************************************************************
- rubysig.h -
- $Author: shyouhei $
- $Date: 2009-01-05 11:16:18 +0900 (Mon, 05 Jan 2009) $
- 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;
- RUBY_EXTERN int rb_thread_pending;
- void rb_thread_schedule _((void));
- #if defined(HAVE_SETITIMER) || defined(_THREAD_SAFE)
- # 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_pending || rb_thread_tick-- <= 0) {\
- rb_thread_tick = THREAD_TICK;\
- rb_thread_schedule();\
- }\
- }\
- if (rb_trap_pending) rb_trap_exec();\
- } while (0)
- #endif
- #endif