1 /* <!-- copyright */
2 /*
3 * aria2 - The high speed download utility
4 *
5 * Copyright (C) 2010 Tatsuhiro Tsujikawa
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 *
21 * In addition, as a special exception, the copyright holders give
22 * permission to link the code of portions of this program with the
23 * OpenSSL library under certain conditions as described in each
24 * individual source file, and distribute linked combinations
25 * including the two.
26 * You must obey the GNU General Public License in all respects
27 * for all of the code used other than OpenSSL. If you modify
28 * file(s) with this exception, you may extend this exception to your
29 * version of the file(s), but you are not obligated to do so. If you
30 * do not wish to do so, delete this exception statement from your
31 * version. If you delete this exception statement from all source
32 * files in the program, then also delete it here.
33 */
34 /* copyright --> */
35 #include "DHTTaskExecutor.h"
36
37 #include <algorithm>
38
39 #include "DHTTask.h"
40 #include "Logger.h"
41 #include "LogFactory.h"
42 #include "a2functional.h"
43 #include "fmt.h"
44
45 namespace aria2 {
46
DHTTaskExecutor(int numConcurrent)47 DHTTaskExecutor::DHTTaskExecutor(int numConcurrent)
48 : numConcurrent_(numConcurrent)
49 {
50 }
51
52 DHTTaskExecutor::~DHTTaskExecutor() = default;
53
update()54 void DHTTaskExecutor::update()
55 {
56 execTasks_.erase(std::remove_if(execTasks_.begin(), execTasks_.end(),
57 std::mem_fn(&DHTTask::finished)),
58 execTasks_.end());
59 int r;
60 if (static_cast<size_t>(numConcurrent_) > execTasks_.size()) {
61 r = numConcurrent_ - execTasks_.size();
62 }
63 else {
64 r = 0;
65 }
66 while (r && !queue_.empty()) {
67 std::shared_ptr<DHTTask> task = queue_.front();
68 queue_.pop_front();
69 task->startup();
70 if (!task->finished()) {
71 execTasks_.push_back(task);
72 --r;
73 }
74 }
75 A2_LOG_DEBUG(fmt("Executing %u Task(s). Queue has %u task(s).",
76 static_cast<unsigned int>(getExecutingTaskSize()),
77 static_cast<unsigned int>(getQueueSize())));
78 }
79
80 } // namespace aria2
81