Mercurial > hg > orthanc

annotate OrthancFramework/Sources/MultiThreading/Semaphore.cpp @ 4870:43e613a7756b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
upgrade to year 2022
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:15:42 +0100
parents 7053502fbf97
children 0ea402b4d901
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
1 /**
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
2 * Orthanc - A Lightweight, RESTful DICOM Store
1900
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1624
diff changeset
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
1288
6e7e5ed91c2d upgrade to year 2015
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 995
diff changeset
4 * Department, University Hospital of Liege, Belgium
4870
43e613a7756b upgrade to year 2022
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4831
diff changeset
5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
43e613a7756b upgrade to year 2022
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4831
diff changeset
6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
7 *
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
8 * This program is free software: you can redistribute it and/or
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
9 * modify it under the terms of the GNU Lesser General Public License
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
10 * as published by the Free Software Foundation, either version 3 of
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
11 * the License, or (at your option) any later version.
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
12 *
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
13 * This program is distributed in the hope that it will be useful, but
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
16 * Lesser General Public License for more details.
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
17 *
4119
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
18 * You should have received a copy of the GNU Lesser General Public
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
19 * License along with this program. If not, see
bf7b9edf6b81 re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4068
diff changeset
20 * <http://www.gnu.org/licenses/>.
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
21 **/
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
22
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
23
1624
0a2ad4a6858f fix missing precompiled headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
24 #include "../PrecompiledHeaders.h"
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
25 #include "Semaphore.h"
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
26
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
27 #include "../OrthancException.h"
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
28
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
29
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
30 namespace Orthanc
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
31 {
3480
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
32 Semaphore::Semaphore(unsigned int availableResources) :
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
33 availableResources_(availableResources)
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
34 {
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
35 }
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
36
4300
b30a8de92ad9 abi continued
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
37 unsigned int Semaphore::GetAvailableResourcesCount() const
b30a8de92ad9 abi continued
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
38 {
b30a8de92ad9 abi continued
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
39 return availableResources_;
b30a8de92ad9 abi continued
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
40 }
b30a8de92ad9 abi continued
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4119
diff changeset
41
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
42 void Semaphore::Release(unsigned int resourceCount)
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
43 {
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
44 boost::mutex::scoped_lock lock(mutex_);
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
45
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
46 availableResources_ += resourceCount;
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
47 condition_.notify_one();
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
48 }
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
49
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
50 void Semaphore::Acquire(unsigned int resourceCount)
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
51 {
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
52 boost::mutex::scoped_lock lock(mutex_);
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
53
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
54 while (availableResources_ < resourceCount)
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
55 {
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
56 condition_.wait(lock);
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
57 }
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
58
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
59 availableResources_ -= resourceCount;
3480
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
60 }
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
61
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
62 bool Semaphore::TryAcquire(unsigned int resourceCount)
3480
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
63 {
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
64 boost::mutex::scoped_lock lock(mutex_);
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
65
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
66 if (availableResources_ < resourceCount)
3480
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
67 {
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
68 return false;
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
69 }
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
70
4064
7176ebf08765 Semaphore: allow acquiring/releasing multiple resources
Alain Mazy
parents: 3640
diff changeset
71 availableResources_ -= resourceCount;
3480
10fd1b9ae044 fix Semaphore + added TryAcquire & TryLocker
Alain Mazy <alain@mazy.be>
parents: 3060
diff changeset
72 return true;
995
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
73 }
8c67382f44a7 limit number of jobs in the scheduler
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
74 }