blob: ef56bb2de8f09439768ae3fbe2724e79a0aafa94 (
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
|
//
// Copyright 2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <uhd/utils/tasks.hpp>
#include <uhd/utils/msg.hpp>
#include <boost/thread/thread.hpp>
#include <boost/thread/barrier.hpp>
#include <exception>
#include <iostream>
using namespace uhd;
class task_impl : public task{
public:
task_impl(const task_fcn_type &task_fcn){
boost::barrier spawn_barrier(2);
_thread_group.create_thread(boost::bind(&task_impl::task_loop, this, task_fcn, boost::ref(spawn_barrier)));
spawn_barrier.wait();
}
~task_impl(void){
_thread_group.interrupt_all();
_thread_group.join_all();
}
private:
void task_loop(const task_fcn_type &task_fcn, boost::barrier &spawn_barrier){
spawn_barrier.wait();
try{
while (not boost::this_thread::interruption_requested()){
task_fcn();
}
}
catch(const boost::thread_interrupted &){
//this is an ok way to exit the task loop
}
catch(const std::exception &e){
do_error_msg(e.what());
}
catch(...){
do_error_msg("unknown exception");
}
}
void do_error_msg(const std::string &msg){
UHD_MSG(error)
<< "An unexpected exception was caught in a task loop." << std::endl
<< "The task loop will now exit, things may not work." << std::endl
<< msg << std::endl
;
}
boost::thread_group _thread_group;
};
task::sptr task::make(const task_fcn_type &task_fcn){
return task::sptr(new task_impl(task_fcn));
}
|
