clthreads/itc_ctrl.cc at master · dmeliza/clthreads · GitHub

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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
// ---------------------------------------------------------------------------------
//
//  Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
//  Copyright (C) 2008 Hans Fugal <hans@fugal.net> (OSX version)
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this program; if not, write to the Free Software
//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ---------------------------------------------------------------------------------


#ifdef __APPLE__
#include <sys/time.h>
#endif
#include "clthreads.h"


ITC_ctrl::ITC_ctrl (void) : _mptr (0)
{
    for (int i = 0; i < N_OP; i++)
    {
	_dest [i] = 0;
	_ipid [i] = 0;
    }
    for (int i = 0; i < N_EC; i++) _ecnt [i] = 0;
    _time.tv_sec  = 0;
    _time.tv_nsec = 0;
}


ITC_ctrl::~ITC_ctrl (void)
{
}


void ITC_ctrl::set_time (const timespec *v)
{
    if (v)
    {
	_time.tv_sec  = v->tv_sec;
	_time.tv_nsec = v->tv_nsec;
    }
    else
    {
#ifdef __APPLE__
        struct timeval t;
        gettimeofday (&t, 0);
	_time.tv_sec  = t.tv_sec;
	_time.tv_nsec = t.tv_usec * 1000;
#else
	timespec t;
	clock_gettime (CLOCK_REALTIME, &t);
	_time.tv_sec  = t.tv_sec;
	_time.tv_nsec = t.tv_nsec;
#endif
    }
}


void ITC_ctrl::inc_time (unsigned long micros)
{
    unsigned long s, m;

    s = micros / 1000000;
    m = micros % 1000000;
    _time.tv_nsec += 1000 * m;
    if (_time.tv_nsec >= 1000000000)
    {
	_time.tv_nsec -= 1000000000;
	s += 1;
    }
    _time.tv_sec += s;
}


unsigned long ITC_ctrl::delay (void)
{
#ifdef __APPLE__
    struct timeval t;

    gettimeofday (&t, 0);
    return  t.tv_usec - _time.tv_nsec / 1000 + 1000000 * (t.tv_sec - _time.tv_sec);
#else
    timespec t;

    clock_gettime (CLOCK_REALTIME, &t);
    return  (t.tv_nsec - _time.tv_nsec) / 1000 + 1000000 * (t.tv_sec - _time.tv_sec);
#endif
}


int ITC_ctrl::get_event (unsigned int emask)
{
    int e;

    lock ();
    _mptr = 0;
    e = find_event (emask);
    if (e < 0) e = eget (emask);
    if      (e >= N_MQ) _ecnt [e - N_MQ] -= 1;
    else if (e >= 0)    _mptr = _list [e].get ();
    unlock ();
    return e;
}


int ITC_ctrl::get_event_timed (unsigned int emask)
{
    int e;

    lock ();
    _mptr = 0;
    e = find_event (emask);
    if (e < 0) e = eget (emask, &_time);
    if      (e >= N_MQ) _ecnt [e - N_MQ] -= 1;
    else if (e >= 0)    _mptr = _list [e].get ();
    unlock ();
    return e;
}


int ITC_ctrl::get_event_nowait (unsigned int emask)
{
    int e;

    if (trylock ()) return EV_TIME;
    _mptr = 0;
    e = find_event (emask);
    if      (e >= N_MQ) _ecnt [e - N_MQ] -= 1;
    else if (e >= 0)    _mptr = _list [e].get ();
    unlock ();
    return e;
}


int ITC_ctrl::send_event (unsigned int opid, ITC_mesg *M)
{
    if ((opid < N_OP) && _dest [opid]) return _dest [opid]->put_event (_ipid [opid], M);
    else return Edest::NOT_CONN;
}


int ITC_ctrl::send_event (unsigned int opid, unsigned int incr)
{
    if ((opid < N_OP) && _dest [opid]) return _dest [opid]->put_event (_ipid [opid], incr);
    else return Edest::NOT_CONN;
}


void ITC_ctrl::connect (ITC_ctrl *srce, unsigned int opid,
                        Edest    *dest, unsigned int ipid)
{
    assert (srce);
    assert (opid < N_OP);
    assert (ipid < N_MQ + N_EC);

    srce->_dest [opid] = 0;
    srce->_ipid [opid] = ipid;
    srce->_dest [opid] = dest;
}