1/*****************************************************************************
2
3Copyright (c) 2013, 2015, Oracle and/or its affiliates. All Rights Reserved.
4Copyright (c) 2017, MariaDB Corporation.
5
6This program is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free Software
8Foundation; version 2 of the License.
9
10This program is distributed in the hope that it will be useful, but WITHOUT
11ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
12FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
14You should have received a copy of the GNU General Public License along with
15this program; if not, write to the Free Software Foundation, Inc.,
1651 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
17
18*****************************************************************************/
19
20/******************************************************************//**
21@file include/sync0policy.ic
22Policy for mutexes.
23
24Created 2012-08-21 Sunny Bains.
25***********************************************************************/
26
27#include "sync0debug.h"
28
29template <typename Mutex>
30std::string GenericPolicy<Mutex>::to_string() const
31{
32 return(sync_mutex_to_string(get_id(), sync_file_created_get(this)));
33}
34
35template <typename Mutex>
36std::string BlockMutexPolicy<Mutex>::to_string() const
37{
38 /* I don't think it makes sense to keep track of the file name
39 and line number for each block mutex. Too much of overhead. Use the
40 latch id to figure out the location from the source. */
41 return(sync_mutex_to_string(get_id(), "buf0buf.cc:0"));
42}
43
44#ifdef UNIV_DEBUG
45
46template <typename Mutex>
47void MutexDebug<Mutex>::init(latch_id_t id)
48 UNIV_NOTHROW
49{
50 m_context.m_id = id;
51
52 m_context.release();
53
54 m_magic_n = MUTEX_MAGIC_N;
55}
56
57template <typename Mutex>
58void MutexDebug<Mutex>::enter(
59 const Mutex* mutex,
60 const char* name,
61 unsigned line)
62 UNIV_NOTHROW
63{
64 ut_ad(!is_owned());
65
66 Context context(m_context.get_id());
67
68 context.locked(mutex, name, line);
69
70 /* Check for latch order violation. */
71
72 sync_check_lock_validate(&context);
73}
74
75template <typename Mutex>
76void MutexDebug<Mutex>::locked(
77 const Mutex* mutex,
78 const char* name,
79 unsigned line)
80 UNIV_NOTHROW
81{
82 ut_ad(!is_owned());
83 ut_ad(m_context.m_thread_id == ULINT_UNDEFINED);
84
85 m_context.locked(mutex, name, line);
86
87 sync_check_lock_granted(&m_context);
88}
89
90template <typename Mutex>
91void MutexDebug<Mutex>::release(const Mutex*)
92 UNIV_NOTHROW
93{
94 ut_ad(is_owned());
95
96 m_context.release();
97
98 sync_check_unlock(&m_context);
99}
100
101#endif /* UNIV_DEBUG */
102