Intel(R) Threading Building Blocks Doxygen Documentation version 4.2.3
tls.h
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1/*
2 Copyright (c) 2005-2020 Intel Corporation
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15*/
16
17#ifndef _TBB_tls_H
18#define _TBB_tls_H
19
20#if USE_PTHREAD
21#include <pthread.h>
22#else /* assume USE_WINTHREAD */
24#endif
25
26namespace tbb {
27
28namespace internal {
29
30typedef void (*tls_dtor_t)(void*);
31
33template <typename T>
34class basic_tls {
35#if USE_PTHREAD
36 typedef pthread_key_t tls_key_t;
37public:
38 int create( tls_dtor_t dtor = NULL ) {
39 return pthread_key_create(&my_key, dtor);
40 }
41 int destroy() { return pthread_key_delete(my_key); }
42 void set( T value ) { pthread_setspecific(my_key, (void*)value); }
43 T get() { return (T)pthread_getspecific(my_key); }
44#else /* USE_WINTHREAD */
45 typedef DWORD tls_key_t;
46public:
47#if !__TBB_WIN8UI_SUPPORT
48 int create() {
49 tls_key_t tmp = TlsAlloc();
50 if( tmp==TLS_OUT_OF_INDEXES )
51 return TLS_OUT_OF_INDEXES;
52 my_key = tmp;
53 return 0;
54 }
55 int destroy() { TlsFree(my_key); my_key=0; return 0; }
56 void set( T value ) { TlsSetValue(my_key, (LPVOID)value); }
57 T get() { return (T)TlsGetValue(my_key); }
58#else
59 int create() {
60 tls_key_t tmp = FlsAlloc(NULL);
61 if( tmp== (DWORD)0xFFFFFFFF )
62 return (DWORD)0xFFFFFFFF;
63 my_key = tmp;
64 return 0;
65 }
66 int destroy() { FlsFree(my_key); my_key=0; return 0; }
67 void set( T value ) { FlsSetValue(my_key, (LPVOID)value); }
68 T get() { return (T)FlsGetValue(my_key); }
69#endif /* !__TBB_WIN8UI_SUPPORT */
70#endif /* USE_WINTHREAD */
71private:
73};
74
76
77template <typename T>
78class tls : public basic_tls<T> {
80public:
83 T operator=(T value) { base::set(value); return value; }
84 operator T() { return base::get(); }
85};
86
87template <typename T>
88class tls<T*> : basic_tls<T*> {
90 static void internal_dtor(void* ptr) {
91 if (ptr) delete (T*)ptr;
92 }
94 T* result = base::get();
95 if (!result) {
96 result = new T;
97 base::set(result);
98 }
99 return result;
100 }
101public:
102 tls() {
103#if USE_PTHREAD
104 base::create( internal_dtor );
105#else
106 base::create();
107#endif
108 }
109 ~tls() { base::destroy(); }
110 T* operator=(T* value) { base::set(value); return value; }
111 operator T*() { return internal_get(); }
112 T* operator->() { return internal_get(); }
113 T& operator*() { return *internal_get(); }
114};
115
116} // namespace internal
117
118} // namespace tbb
119
120#endif /* _TBB_tls_H */
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain ITT_FORMAT p const __itt_domain __itt_string_handle unsigned long long value
The graph class.
void(* tls_dtor_t)(void *)
Definition: tls.h:30
Basic cross-platform wrapper class for TLS operations.
Definition: tls.h:34
void set(T value)
Definition: tls.h:56
tls_key_t my_key
Definition: tls.h:72
More advanced TLS support template class.
Definition: tls.h:78
T operator=(T value)
Definition: tls.h:83
basic_tls< T > base
Definition: tls.h:79
basic_tls< T * > base
Definition: tls.h:89
static void internal_dtor(void *ptr)
Definition: tls.h:90
T * operator=(T *value)
Definition: tls.h:110

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