blob: 1975215ef0f0d2d6addda18c7cc7681baa2c1249 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/**********************************************************************
rubysig.h -
$Author$
$Date$
created at: Wed Aug 16 01:15:38 JST 1995
Copyright (C) 1993-2000 Yukihiro Matsumoto
**********************************************************************/
#ifndef SIG_H
#define SIG_H
#ifdef NT
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 win32_enter_syscall()
# define TRAP_END win32_leave_syscall()
# define RUBY_CRITICAL(statements) do {\
win32_disable_interrupt();\
statements;\
win32_enable_interrupt();\
} 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 trap_immediate = rb_trap_immediate;\
rb_trap_immediate = 1;
# define TRAP_END rb_trap_immediate = trap_immediate;\
} 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
EXTERN rb_atomic_t rb_trap_immediate;
EXTERN int rb_prohibit_interrupt;
#define DEFER_INTS {rb_prohibit_interrupt++;}
#define ALLOW_INTS {rb_prohibit_interrupt--; CHECK_INTS;}
#define ENABLE_INTS {rb_prohibit_interrupt--;}
VALUE rb_with_disable_interrupt _((VALUE(*)(),VALUE));
EXTERN rb_atomic_t rb_trap_pending;
void rb_trap_restore_mask _((void));
EXTERN int rb_thread_critical;
void rb_thread_schedule _((void));
#if defined(HAVE_SETITIMER) && !defined(__BOW__)
EXTERN int rb_thread_pending;
# define CHECK_INTS if (!rb_prohibit_interrupt) {\
if (rb_trap_pending) rb_trap_exec();\
if (rb_thread_pending && !rb_thread_critical) rb_thread_schedule();\
}
#else
/* pseudo preemptive thread switching */
EXTERN int rb_thread_tick;
#define THREAD_TICK 500
#define CHECK_INTS 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();\
}\
}\
}
#endif
#endif
|
