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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2006-2011. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifndef ERL_TIME_H__
#define ERL_TIME_H__
#define ERTS_SHORT_TIME_T_MAX ERTS_AINT32_T_MAX
#define ERTS_SHORT_TIME_T_MIN ERTS_AINT32_T_MIN
typedef erts_aint32_t erts_short_time_t;
extern erts_smp_atomic32_t do_time; /* set at clock interrupt */
extern SysTimeval erts_first_emu_time;
/*
** Timer entry:
*/
typedef struct erl_timer {
struct erl_timer* next; /* next entry tiw slot or chain */
struct erl_timer* prev; /* prev entry tiw slot or chain */
Uint slot; /* slot in timer wheel */
Uint count; /* number of loops remaining */
int active; /* 1=activated, 0=deactivated */
/* called when timeout */
void (*timeout)(void*);
/* called when cancel (may be NULL) */
void (*cancel)(void*);
void* arg; /* argument to timeout/cancel procs */
} ErlTimer;
typedef void (*ErlTimeoutProc)(void*);
typedef void (*ErlCancelProc)(void*);
#ifdef ERTS_SMP
/*
* Process and port timer
*/
typedef union ErtsSmpPTimer_ ErtsSmpPTimer;
union ErtsSmpPTimer_ {
struct {
ErlTimer tm;
Eterm id;
void (*timeout_func)(void*);
ErtsSmpPTimer **timer_ref;
Uint32 flags;
} timer;
ErtsSmpPTimer *next;
};
void erts_create_smp_ptimer(ErtsSmpPTimer **timer_ref,
Eterm id,
ErlTimeoutProc timeout_func,
Uint timeout);
void erts_cancel_smp_ptimer(ErtsSmpPTimer *ptimer);
#endif
/* timer-wheel api */
void erts_init_time(void);
void erts_set_timer(ErlTimer*, ErlTimeoutProc, ErlCancelProc, void*, Uint);
void erts_cancel_timer(ErlTimer*);
void erts_bump_timer(erts_short_time_t);
Uint erts_timer_wheel_memory_size(void);
Uint erts_time_left(ErlTimer *);
erts_short_time_t erts_next_time(void);
#ifdef DEBUG
void erts_p_slpq(void);
#endif
ERTS_GLB_INLINE erts_short_time_t erts_do_time_read_and_reset(void);
ERTS_GLB_INLINE void erts_do_time_add(erts_short_time_t);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE erts_short_time_t erts_do_time_read_and_reset(void)
{
erts_short_time_t time = erts_smp_atomic32_xchg_acqb(&do_time, 0);
if (time < 0)
erl_exit(ERTS_ABORT_EXIT, "Internal time management error\n");
return time;
}
ERTS_GLB_INLINE void erts_do_time_add(erts_short_time_t elapsed)
{
erts_smp_atomic32_add_relb(&do_time, elapsed);
}
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
/* time_sup */
#if (defined(HAVE_GETHRVTIME) || defined(HAVE_CLOCK_GETTIME))
# ifndef HAVE_ERTS_NOW_CPU
# define HAVE_ERTS_NOW_CPU
# ifdef HAVE_GETHRVTIME
# define erts_start_now_cpu() sys_start_hrvtime()
# define erts_stop_now_cpu() sys_stop_hrvtime()
# endif
# endif
void erts_get_now_cpu(Uint* megasec, Uint* sec, Uint* microsec);
#endif
void erts_get_timeval(SysTimeval *tv);
erts_time_t erts_get_time(void);
void erts_get_emu_time(SysTimeval *);
ERTS_GLB_INLINE int erts_cmp_timeval(SysTimeval *t1p, SysTimeval *t2p);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE int
erts_cmp_timeval(SysTimeval *t1p, SysTimeval *t2p)
{
if (t1p->tv_sec == t2p->tv_sec) {
if (t1p->tv_usec < t2p->tv_usec)
return -1;
else if (t1p->tv_usec > t2p->tv_usec)
return 1;
return 0;
}
return t1p->tv_sec < t2p->tv_sec ? -1 : 1;
}
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
#endif /* ERL_TIME_H__ */
|
