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1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2014 CohortFS, LLC
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
15 #include "QueueStrategy.h"
16 #define dout_subsys ceph_subsys_ms
17 #include "common/debug.h"
18 #include "common/backport14.h"
20 QueueStrategy::QueueStrategy(int _n_threads
)
21 : lock("QueueStrategy::lock"),
22 n_threads(_n_threads
),
29 void QueueStrategy::ds_dispatch(Message
*m
) {
30 msgr
->ms_fast_preprocess(m
);
31 if (msgr
->ms_can_fast_dispatch(m
)) {
32 msgr
->ms_fast_dispatch(m
);
37 if (disp_threads
.size()) {
38 if (! disp_threads
.empty()) {
39 QSThread
*thrd
= &disp_threads
.front();
40 disp_threads
.pop_front();
47 void QueueStrategy::entry(QSThread
*thrd
)
53 if (! mqueue
.empty()) {
54 m
= &(mqueue
.front());
61 disp_threads
.push_front(*thrd
);
62 thrd
->cond
.Wait(lock
);
70 get_messenger()->ms_deliver_dispatch(m
);
74 void QueueStrategy::shutdown()
79 while (disp_threads
.size()) {
80 thrd
= &(disp_threads
.front());
81 disp_threads
.pop_front();
87 void QueueStrategy::wait()
91 for (auto& thread
: threads
) {
94 // join outside of lock
102 void QueueStrategy::start()
106 threads
.reserve(n_threads
);
107 for (int ix
= 0; ix
< n_threads
; ++ix
) {
108 string thread_name
= "ms_xio_qs_";
109 thread_name
.append(std::to_string(ix
));
110 auto thrd
= ceph::make_unique
<QSThread
>(this);
111 thrd
->create(thread_name
.c_str());
112 threads
.emplace_back(std::move(thrd
));