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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// ======================================================================== //
// Copyright 2009-2019 Intel Corporation //
// //
// Licensed under the Apache License, Version 2.0 (the "License"); //
// you may not use this file except in compliance with the License. //
// You may obtain a copy of the License at //
// //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
// Unless required by applicable law or agreed to in writing, software //
// distributed under the License is distributed on an "AS IS" BASIS, //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and //
// limitations under the License. //
// ======================================================================== //
#pragma once
#include "platform.h"
#if !defined(_WIN32)
#include <pthread.h>
#include <sched.h>
#if defined(__APPLE__)
#include <mach/thread_policy.h>
#endif
#endif
#include <vector>
#include <mutex>
namespace oidn {
// --------------------------------------------------------------------------
// ThreadLocal
// --------------------------------------------------------------------------
// Wrapper which makes any variable thread-local
template<typename T>
class ThreadLocal : public Verbose
{
private:
#if defined(_WIN32)
DWORD key;
#else
pthread_key_t key;
#endif
std::vector<T*> instances;
std::mutex mutex;
public:
ThreadLocal(int verbose = 0)
: Verbose(verbose)
{
#if defined(_WIN32)
key = TlsAlloc();
if (key == TLS_OUT_OF_INDEXES)
OIDN_FATAL("TlsAlloc failed");
#else
if (pthread_key_create(&key, nullptr) != 0)
OIDN_FATAL("pthread_key_create failed");
#endif
}
~ThreadLocal()
{
std::lock_guard<std::mutex> lock(mutex);
for (T* ptr : instances)
delete ptr;
#if defined(_WIN32)
if (!TlsFree(key))
OIDN_WARNING("TlsFree failed");
#else
if (pthread_key_delete(key) != 0)
OIDN_WARNING("pthread_key_delete failed");
#endif
}
T& get()
{
#if defined(_WIN32)
T* ptr = (T*)TlsGetValue(key);
#else
T* ptr = (T*)pthread_getspecific(key);
#endif
if (ptr)
return *ptr;
ptr = new T;
std::lock_guard<std::mutex> lock(mutex);
instances.push_back(ptr);
#if defined(_WIN32)
if (!TlsSetValue(key, ptr))
OIDN_FATAL("TlsSetValue failed");
#else
if (pthread_setspecific(key, ptr) != 0)
OIDN_FATAL("pthread_setspecific failed");
#endif
return *ptr;
}
};
#if defined(_WIN32)
// --------------------------------------------------------------------------
// ThreadAffinity - Windows
// --------------------------------------------------------------------------
class ThreadAffinity : public Verbose
{
private:
typedef BOOL (WINAPI *GetLogicalProcessorInformationExFunc)(LOGICAL_PROCESSOR_RELATIONSHIP,
PSYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX,
PDWORD);
typedef BOOL (WINAPI *SetThreadGroupAffinityFunc)(HANDLE,
CONST GROUP_AFFINITY*,
PGROUP_AFFINITY);
GetLogicalProcessorInformationExFunc pGetLogicalProcessorInformationEx = nullptr;
SetThreadGroupAffinityFunc pSetThreadGroupAffinity = nullptr;
std::vector<GROUP_AFFINITY> affinities; // thread affinities
std::vector<GROUP_AFFINITY> oldAffinities; // original thread affinities
public:
ThreadAffinity(int numThreadsPerCore = INT_MAX, int verbose = 0);
int getNumThreads() const
{
return (int)affinities.size();
}
// Sets the affinity (0..numThreads-1) of the thread after saving the current affinity
void set(int threadIndex);
// Restores the affinity of the thread
void restore(int threadIndex);
};
#elif defined(__linux__)
// --------------------------------------------------------------------------
// ThreadAffinity - Linux
// --------------------------------------------------------------------------
class ThreadAffinity : public Verbose
{
private:
std::vector<cpu_set_t> affinities; // thread affinities
std::vector<cpu_set_t> oldAffinities; // original thread affinities
public:
ThreadAffinity(int numThreadsPerCore = INT_MAX, int verbose = 0);
int getNumThreads() const
{
return (int)affinities.size();
}
// Sets the affinity (0..numThreads-1) of the thread after saving the current affinity
void set(int threadIndex);
// Restores the affinity of the thread
void restore(int threadIndex);
};
#elif defined(__APPLE__)
// --------------------------------------------------------------------------
// ThreadAffinity - macOS
// --------------------------------------------------------------------------
class ThreadAffinity : public Verbose
{
private:
std::vector<thread_affinity_policy> affinities; // thread affinities
std::vector<thread_affinity_policy> oldAffinities; // original thread affinities
public:
ThreadAffinity(int numThreadsPerCore = INT_MAX, int verbose = 0);
int getNumThreads() const
{
return (int)affinities.size();
}
// Sets the affinity (0..numThreads-1) of the thread after saving the current affinity
void set(int threadIndex);
// Restores the affinity of the thread
void restore(int threadIndex);
};
#endif
} // namespace oidn
|