mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
004127aa90
(backported from CVS HEAD) [ruby-dev:24993] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7472 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/**********************************************************************
|
|
|
|
rubysig.h -
|
|
|
|
$Author$
|
|
$Date$
|
|
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)
|
|
RUBY_EXTERN int rb_thread_pending;
|
|
# define CHECK_INTS do {\
|
|
if (!rb_prohibit_interrupt) {\
|
|
if (rb_trap_pending) rb_trap_exec();\
|
|
if (rb_thread_pending && !rb_thread_critical)\
|
|
rb_thread_schedule();\
|
|
}\
|
|
} 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) {\
|
|
if (rb_trap_pending) rb_trap_exec();\
|
|
if (!rb_thread_critical) {\
|
|
if (rb_thread_tick-- <= 0) {\
|
|
rb_thread_tick = THREAD_TICK;\
|
|
rb_thread_schedule();\
|
|
}\
|
|
}\
|
|
}\
|
|
} while (0)
|
|
#endif
|
|
|
|
#endif
|