RDKit: RDThreads.h Source File

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RDThreads.h
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1 //
2 // Copyright (C) 2015 Greg Landrum
3 //
4 // @@ All Rights Reserved @@
5 // This file is part of the RDKit.
6 // The contents are covered by the terms of the BSD license
7 // which is included in the file license.txt, found at the root
8 // of the RDKit source tree.
9 //
10
11 #ifndef RDTHREADS_H_2015
12 #define RDTHREADS_H_2015
13
14 #ifdef RDK_THREADSAFE_SSS
15 #include "RDGeneral/Invariant.h"
16 #include <RDGeneral/BoostStartInclude.h>
17 #include <boost/thread.hpp>
18 #include <RDGeneral/BoostEndInclude.h>
19
20 namespace RDKit {
21 inline unsigned int getNumThreadsToUse(int target) {
22 if (target >= 1) {
23 return static_cast<unsigned int>(target);
24 }
25 unsigned int res = boost::thread::hardware_concurrency();
26 if (res > rdcast<unsigned int>(-target)) {
27 return res + target;
28 } else {
29 return 1;
30 }
31 }
32 }
33
34 #else
35
36 namespace RDKit {
37 inline unsigned int getNumThreadsToUse(int target) {
38 RDUNUSED_PARAM(target);
39 return 1;
40 }
41 }
42 #endif
43
44 #endif
BoostStartInclude.h
Invariant.h
BoostEndInclude.h
RDKit
Includes a bunch of functionality for handling Atom and Bond queries.
Definition: Atom.h:28
RDKit::getNumThreadsToUse
unsigned int getNumThreadsToUse(int target)
Definition: RDThreads.h:37
RDUNUSED_PARAM
#define RDUNUSED_PARAM(x)
Definition: Invariant.h:190