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ruby18
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lib64
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ruby
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1.8
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x86_64-linux
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Filename :
rubysig.h
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/********************************************************************** 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