1/*
2 Portions Copyright (c) 2015-Present, Facebook, Inc.
3 Portions Copyright (c) 2012, Monty Program Ab
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; version 2 of the License.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17
18#ifdef USE_PRAGMA_IMPLEMENTATION
19#pragma implementation // gcc: Class implementation
20#endif
21
22#include <my_global.h>
23
24/* The C++ file's header */
25#include "./rdb_threads.h"
26
27namespace myrocks {
28
29void *Rdb_thread::thread_func(void *const thread_ptr) {
30 DBUG_ASSERT(thread_ptr != nullptr);
31 Rdb_thread *const thread = static_cast<Rdb_thread *const>(thread_ptr);
32 if (!thread->m_run_once.exchange(true)) {
33 thread->setname();
34 thread->run();
35 thread->uninit();
36 }
37 return nullptr;
38}
39
40void Rdb_thread::init(
41#ifdef HAVE_PSI_INTERFACE
42 my_core::PSI_mutex_key stop_bg_psi_mutex_key,
43 my_core::PSI_cond_key stop_bg_psi_cond_key
44#endif
45 ) {
46 DBUG_ASSERT(!m_run_once);
47 mysql_mutex_init(stop_bg_psi_mutex_key, &m_signal_mutex, MY_MUTEX_INIT_FAST);
48 mysql_cond_init(stop_bg_psi_cond_key, &m_signal_cond, nullptr);
49}
50
51void Rdb_thread::uninit() {
52 mysql_mutex_destroy(&m_signal_mutex);
53 mysql_cond_destroy(&m_signal_cond);
54}
55
56int Rdb_thread::create_thread(const std::string &thread_name
57#ifdef HAVE_PSI_INTERFACE
58 ,
59 PSI_thread_key background_psi_thread_key
60#endif
61 ) {
62 // Make a copy of the name so we can return without worrying that the
63 // caller will free the memory
64 m_name = thread_name;
65
66 return mysql_thread_create(background_psi_thread_key, &m_handle, nullptr,
67 thread_func, this);
68
69}
70
71void Rdb_thread::signal(const bool &stop_thread) {
72 RDB_MUTEX_LOCK_CHECK(m_signal_mutex);
73
74 if (stop_thread) {
75 m_stop = true;
76 }
77
78 mysql_cond_signal(&m_signal_cond);
79
80 RDB_MUTEX_UNLOCK_CHECK(m_signal_mutex);
81}
82
83} // namespace myrocks
84