forked from SpamapS/gearmand
/
timer.cc
164 lines (139 loc) · 3.87 KB
/
timer.cc
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
/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Gearmand client and server library.
*
* Copyright (C) 2012 Data Differential, http://datadifferential.com/ All
* rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "gear_config.h"
#include "libgearman-server/common.h"
#include <libgearman-server/gearmand.h>
#include <libgearman/pipe.h>
#include <libgearman-server/timer.h>
#include <cerrno>
#include <cstring>
#include <ctime>
#include <pthread.h>
#include <signal.h>
static pthread_once_t start_key_once= PTHREAD_ONCE_INIT;
static pthread_t thread_id;
static struct timeval current_epoch;
static int wakeup_fd[2];
static __attribute__((noreturn)) void* current_epoch_handler(void*)
{
gearmand_debug("staring up Epoch thread");
pollfd fds[2];
while (true)
{
memset(fds, 0, sizeof(pollfd));
fds[0].fd= -1; //STDIN_FILENO;
fds[0].events= POLLIN;
fds[0].revents= 0;
fds[1].fd= wakeup_fd[0]; // wakeup fd
fds[1].events= POLLIN;
fds[1].revents= 0;
int active_fd;
if ((active_fd= poll(fds, 2, 1000)) == -1)
{
gearmand_perror(errno, "poll");
}
else
{
if (fds[1].revents)
{
pthread_exit(NULL);
}
gettimeofday(¤t_epoch, NULL);
}
}
pthread_exit(NULL);
}
namespace libgearman {
namespace server {
static void startup(void)
{
wakeup_fd[0]= -1;
wakeup_fd[1]= -1;
if (setup_shutdown_pipe(wakeup_fd) == false)
{
fprintf(stderr, "Could not setup pipe\n");
exit(1);
}
gettimeofday(¤t_epoch, NULL);
int error;
if ((error= pthread_create(&thread_id, NULL, current_epoch_handler, NULL)))
{
fprintf(stderr, "pthread_create() failed: %s\n", strerror(error));
exit(1);
}
}
Epoch::Epoch()
{
(void) pthread_once(&start_key_once, startup);
}
Epoch::~Epoch()
{
gearmand_debug("shutting down Epoch thread");
int count= 5;
for (size_t x= 0; x < 2; x++)
{
while (--count)
{
if (close(wakeup_fd[x]) == -1)
{
switch(errno)
{
case EAGAIN:
continue;
default:
break;
}
}
break; // close()
}
}
#if 0
int error;
if ((error= pthread_kill(thread_id, SIGPIPE)) != 0)
{
gearmand_perror(error, "pthread_kill(thread_id, SIGTERM)");
}
#endif
pthread_join(thread_id, 0);
gearmand_debug("shutdown of Epoch completed");
}
struct timeval Epoch::current()
{
return current_epoch;
}
} // server
} // libgearman