forked from uroni/urbackup_backend
-
Notifications
You must be signed in to change notification settings - Fork 0
/
SharedMutex_std.cpp
69 lines (61 loc) · 2.12 KB
/
SharedMutex_std.cpp
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
/*************************************************************************
* UrBackup - Client/Server backup system
* Copyright (C) 2011-2016 Martin Raiber
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#include "SharedMutex_std.h"
#ifdef SHARED_MUTEX_CHECK
#include <assert.h>
#endif
ILock* SharedMutex::readLock()
{
#ifdef SHARED_MUTEX_CHECK
{
std::unique_lock<std::mutex> n_lock(check_mutex);
std::pair<std::set<std::thread::id>::iterator, bool> ins = check_threads.insert(std::this_thread::get_id());
assert(ins.second);
}
#endif
return new ReadLock(new std::shared_lock<std::shared_timed_mutex>(mutex)
SHARED_MUTEX_CHECK_P(this));
}
ILock* SharedMutex::writeLock()
{
#ifdef SHARED_MUTEX_CHECK
{
std::unique_lock<std::mutex> n_lock(check_mutex);
assert(check_threads.find(std::this_thread::get_id())
== check_threads.end());
}
#endif
return new WriteLock(new std::unique_lock<std::shared_timed_mutex>(mutex));
}
#ifdef SHARED_MUTEX_CHECK
void SharedMutex::rmLockCheck()
{
std::unique_lock<std::mutex> n_lock(check_mutex);
assert(check_threads.erase(std::this_thread::get_id()) == 1);
}
#endif
ReadLock::ReadLock( std::shared_lock<std::shared_timed_mutex>* read_lock
SHARED_MUTEX_CHECK_P(SharedMutex* shared_mutex))
: read_lock(read_lock)
SHARED_MUTEX_CHECK_P(shared_mutex(shared_mutex))
{
}
WriteLock::WriteLock( std::unique_lock<std::shared_timed_mutex>* write_lock )
: write_lock(write_lock)
{
}