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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/* fhandler_timerfd.cc: fhandler for timerfd
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include "path.h"
#include "fhandler.h"
#include "pinfo.h"
#include "dtable.h"
#include "cygheap.h"
#include "timer.h"
#include <sys/timerfd.h>
#include <cygwin/signal.h>
fhandler_timerfd::fhandler_timerfd () :
fhandler_base ()
{
}
char *
fhandler_timerfd::get_proc_fd_name (char *buf)
{
return strcpy (buf, "anon_inode:[timerfd]");
}
int
fhandler_timerfd::timerfd (clockid_t clock_id, int flags)
{
timerid = (timer_t) new timer_tracker (clock_id, NULL, true);
if (flags & TFD_NONBLOCK)
set_nonblocking (true);
if (flags & TFD_CLOEXEC)
set_close_on_exec (true);
if (get_unique_id () == 0)
{
nohandle (true);
set_unique_id ();
set_ino (get_unique_id ());
}
return 0;
}
int
fhandler_timerfd::settime (int flags, const itimerspec *value,
itimerspec *ovalue)
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
ret = tt->settime (flags, value, ovalue);
}
__except (EFAULT) {}
__endtry
return ret;
}
int
fhandler_timerfd::gettime (itimerspec *ovalue)
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
tt->gettime (ovalue);
ret = 0;
}
__except (EFAULT) {}
__endtry
return ret;
}
int __reg2
fhandler_timerfd::fstat (struct stat *buf)
{
int ret = fhandler_base::fstat (buf);
if (!ret)
{
buf->st_mode = S_IRUSR | S_IWUSR;
buf->st_dev = FH_TIMERFD;
buf->st_ino = get_unique_id ();
}
return ret;
}
void __reg3
fhandler_timerfd::read (void *ptr, size_t& len)
{
if (len < sizeof (LONG64))
{
set_errno (EINVAL);
len = (size_t) -1;
return;
}
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
LONG64 ret = tt->wait (is_nonblocking ());
if (ret == -1)
__leave;
PLONG64 pl64 = (PLONG64) ptr;
*pl64 = ret + 1;
len = sizeof (LONG64);
return;
}
__except (EFAULT) {}
__endtry
len = (size_t) -1;
return;
}
HANDLE
fhandler_timerfd::get_timerfd_handle ()
{
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
return tt->get_timerfd_handle ();
}
__except (EFAULT) {}
__endtry
return NULL;
}
int
fhandler_timerfd::dup (fhandler_base *child, int flags)
{
int ret = fhandler_base::dup (child, flags);
if (!ret)
{
fhandler_timerfd *fhc = (fhandler_timerfd *) child;
__try
{
timer_tracker *tt = (timer_tracker *) fhc->timerid;
tt->increment_instances ();
ret = 0;
}
__except (EFAULT) {}
__endtry
}
return ret;
}
void
fhandler_timerfd::fixup_after_fork_exec (bool execing)
{
if (!execing)
{
/* TODO after fork */
}
else if (!close_on_exec ())
{
/* TODO after exec */
}
}
int
fhandler_timerfd::ioctl (unsigned int cmd, void *p)
{
int ret = -1;
switch (cmd)
{
case TFD_IOC_SET_TICKS:
/* TODO */
ret = 0;
break;
default:
set_errno (EINVAL);
break;
}
syscall_printf ("%d = ioctl_timerfd(%x, %p)", ret, cmd, p);
return ret;
}
int
fhandler_timerfd::close ()
{
int ret = -1;
__try
{
timer_tracker *tt = (timer_tracker *) timerid;
timer_tracker::close (tt);
ret = 0;
}
__except (EFAULT) {}
__endtry
return ret;
}
|