main page
modules
namespaces
classes
files
Gecode home
Generated on Tue Jan 28 2020 00:00:00 for Gecode by
doxygen
1.8.17
gecode
support
thread
thread.cpp
Go to the documentation of this file.
1
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2
/*
3
* Main authors:
4
* Christian Schulte <schulte@gecode.org>
5
*
6
* Copyright:
7
* Christian Schulte, 2009
8
*
9
* Last modified:
10
* $Date: 2016-04-19 17:19:45 +0200 (Tue, 19 Apr 2016) $ by $Author: schulte $
11
* $Revision: 14967 $
12
*
13
* This file is part of Gecode, the generic constraint
14
* development environment:
15
* http://www.gecode.org
16
*
17
* Permission is hereby granted, free of charge, to any person obtaining
18
* a copy of this software and associated documentation files (the
19
* "Software"), to deal in the Software without restriction, including
20
* without limitation the rights to use, copy, modify, merge, publish,
21
* distribute, sublicense, and/or sell copies of the Software, and to
22
* permit persons to whom the Software is furnished to do so, subject to
23
* the following conditions:
24
*
25
* The above copyright notice and this permission notice shall be
26
* included in all copies or substantial portions of the Software.
27
*
28
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
32
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
33
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
34
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35
*
36
*/
37
38
#include <
gecode/support.hh
>
39
40
namespace
Gecode
{
namespace
Support {
41
42
/*
43
* Threads
44
*/
45
46
Mutex
*
Thread::m
(
void
) {
47
static
Mutex
*
m
=
new
Mutex
;
48
return
m
;
49
}
50
51
Thread::Run
*
Thread::idle
= NULL;
52
53
void
54
Thread::Run::exec
(
void
) {
55
while
(
true
) {
56
// Execute runnable
57
{
58
Runnable
*
e
;
59
m
.
acquire
();
60
e
=
r
;
r
=NULL;
61
m
.
release
();
62
assert(
e
!= NULL);
63
e
->run();
64
if
(
e
->todelete())
65
delete
e
;
66
}
67
// Put into idle stack
68
Thread::m
()->
acquire
();
69
n
=
Thread::idle
;
Thread::idle
=
this
;
70
Thread::m
()->
release
();
71
// Wait for next runnable
72
e
.
wait
();
73
}
74
}
75
76
}}
77
78
// STATISTICS: support-any
Gecode::Support::Thread::Run::exec
void exec(void)
Infinite loop for execution.
Definition:
thread.cpp:54
Gecode::Support::Thread::m
static Mutex * m(void)
Mutex for synchronization.
Definition:
thread.cpp:46
Gecode::Support::Thread::Run::n
Run * n
Next idle thread.
Definition:
thread.hpp:294
Gecode::Support::Mutex::acquire
void acquire(void)
Acquire the mutex and possibly block.
Definition:
none.hpp:46
Gecode::Support::Thread::Run::e
Event e
Event to wait for next runnable object to execute.
Definition:
thread.hpp:298
Gecode::Support::Thread::Run
A real thread.
Definition:
thread.hpp:291
Gecode
Gecode toplevel namespace
Gecode::Support::Thread::Run::m
Mutex m
Mutex for synchronization.
Definition:
thread.hpp:300
Gecode::Support::Thread::idle
static Run * idle
Idle runners.
Definition:
thread.hpp:315
Gecode::Support::Thread::Run::r
Runnable * r
Runnable object to execute.
Definition:
thread.hpp:296
support.hh
Gecode::Support::Runnable
An interface for objects that can be run by a thread.
Definition:
thread.hpp:258
Gecode::Support::Mutex::release
void release(void)
Release the mutex.
Definition:
none.hpp:52
Gecode::Support::Mutex
A mutex for mutual exclausion among several threads.
Definition:
thread.hpp:99
Gecode::Support::Event::wait
void wait(void)
Wait until the event becomes signalled.
Definition:
none.hpp:65