2 Copyright (c) 2005-2019 Intel Corporation
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
8 http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef __TBB_tbb_thread_H
18 #define __TBB_tbb_thread_H
20 #include "tbb_stddef.h"
23 #include "machine/windows_api.h"
24 #define __TBB_NATIVE_THREAD_ROUTINE unsigned WINAPI
25 #define __TBB_NATIVE_THREAD_ROUTINE_PTR(r) unsigned (WINAPI* r)( void* )
26 namespace tbb { namespace internal {
27 #if __TBB_WIN8UI_SUPPORT
28 typedef size_t thread_id_type;
29 #else // __TBB_WIN8UI_SUPPORT
30 typedef DWORD thread_id_type;
31 #endif // __TBB_WIN8UI_SUPPORT
32 }} //namespace tbb::internal
34 #define __TBB_NATIVE_THREAD_ROUTINE void*
35 #define __TBB_NATIVE_THREAD_ROUTINE_PTR(r) void* (*r)( void* )
37 namespace tbb { namespace internal {
38 typedef pthread_t thread_id_type;
39 }} //namespace tbb::internal
40 #endif // _WIN32||_WIN64
43 #include "internal/_tbb_hash_compare_impl.h"
44 #include "tick_count.h"
46 #include __TBB_STD_SWAP_HEADER
55 inline void swap( internal::tbb_thread_v3& t1, internal::tbb_thread_v3& t2 ) __TBB_NOEXCEPT(true);
59 //! Allocate a closure
60 void* __TBB_EXPORTED_FUNC allocate_closure_v3( size_t size );
61 //! Free a closure allocated by allocate_closure_v3
62 void __TBB_EXPORTED_FUNC free_closure_v3( void* );
64 struct thread_closure_base {
65 void* operator new( size_t size ) {return allocate_closure_v3(size);}
66 void operator delete( void* ptr ) {free_closure_v3(ptr);}
69 template<class F> struct thread_closure_0: thread_closure_base {
72 static __TBB_NATIVE_THREAD_ROUTINE start_routine( void* c ) {
73 thread_closure_0 *self = static_cast<thread_closure_0*>(c);
78 thread_closure_0( const F& f ) : function(f) {}
80 //! Structure used to pass user function with 1 argument to thread.
81 template<class F, class X> struct thread_closure_1: thread_closure_base {
84 //! Routine passed to Windows's _beginthreadex by thread::internal_start() inside tbb.dll
85 static __TBB_NATIVE_THREAD_ROUTINE start_routine( void* c ) {
86 thread_closure_1 *self = static_cast<thread_closure_1*>(c);
87 self->function(self->arg1);
91 thread_closure_1( const F& f, const X& x ) : function(f), arg1(x) {}
93 template<class F, class X, class Y> struct thread_closure_2: thread_closure_base {
97 //! Routine passed to Windows's _beginthreadex by thread::internal_start() inside tbb.dll
98 static __TBB_NATIVE_THREAD_ROUTINE start_routine( void* c ) {
99 thread_closure_2 *self = static_cast<thread_closure_2*>(c);
100 self->function(self->arg1, self->arg2);
104 thread_closure_2( const F& f, const X& x, const Y& y ) : function(f), arg1(x), arg2(y) {}
107 //! Versioned thread class.
108 class tbb_thread_v3 {
109 #if __TBB_IF_NO_COPY_CTOR_MOVE_SEMANTICS_BROKEN
110 // Workaround for a compiler bug: declaring the copy constructor as public
111 // enables use of the moving constructor.
112 // The definition is not provided in order to prohibit copying.
115 tbb_thread_v3(const tbb_thread_v3&); // = delete; // Deny access
118 typedef HANDLE native_handle_type;
120 typedef pthread_t native_handle_type;
121 #endif // _WIN32||_WIN64
124 //! Constructs a thread object that does not represent a thread of execution.
125 tbb_thread_v3() __TBB_NOEXCEPT(true) : my_handle(0)
128 #endif // _WIN32||_WIN64
131 //! Constructs an object and executes f() in a new thread
132 template <class F> explicit tbb_thread_v3(F f) {
133 typedef internal::thread_closure_0<F> closure_type;
134 internal_start(closure_type::start_routine, new closure_type(f));
136 //! Constructs an object and executes f(x) in a new thread
137 template <class F, class X> tbb_thread_v3(F f, X x) {
138 typedef internal::thread_closure_1<F,X> closure_type;
139 internal_start(closure_type::start_routine, new closure_type(f,x));
141 //! Constructs an object and executes f(x,y) in a new thread
142 template <class F, class X, class Y> tbb_thread_v3(F f, X x, Y y) {
143 typedef internal::thread_closure_2<F,X,Y> closure_type;
144 internal_start(closure_type::start_routine, new closure_type(f,x,y));
147 #if __TBB_CPP11_RVALUE_REF_PRESENT
148 tbb_thread_v3(tbb_thread_v3&& x) __TBB_NOEXCEPT(true)
149 : my_handle(x.my_handle)
151 , my_thread_id(x.my_thread_id)
156 tbb_thread_v3& operator=(tbb_thread_v3&& x) __TBB_NOEXCEPT(true) {
161 tbb_thread_v3& operator=(const tbb_thread_v3& x); // = delete;
163 #else // __TBB_CPP11_RVALUE_REF_PRESENT
164 tbb_thread_v3& operator=(tbb_thread_v3& x) {
168 #endif // __TBB_CPP11_RVALUE_REF_PRESENT
170 void swap( tbb_thread_v3& t ) __TBB_NOEXCEPT(true) {tbb::swap( *this, t );}
171 bool joinable() const __TBB_NOEXCEPT(true) {return my_handle!=0; }
172 //! The completion of the thread represented by *this happens before join() returns.
173 void __TBB_EXPORTED_METHOD join();
174 //! When detach() returns, *this no longer represents the possibly continuing thread of execution.
175 void __TBB_EXPORTED_METHOD detach();
176 ~tbb_thread_v3() {if( joinable() ) detach();}
177 inline id get_id() const __TBB_NOEXCEPT(true);
178 native_handle_type native_handle() { return my_handle; }
180 //! The number of hardware thread contexts.
181 /** Before TBB 3.0 U4 this methods returned the number of logical CPU in
182 the system. Currently on Windows, Linux and FreeBSD it returns the
183 number of logical CPUs available to the current process in accordance
184 with its affinity mask.
186 NOTE: The return value of this method never changes after its first
187 invocation. This means that changes in the process affinity mask that
188 took place after this method was first invoked will not affect the
189 number of worker threads in the TBB worker threads pool. **/
190 static unsigned __TBB_EXPORTED_FUNC hardware_concurrency() __TBB_NOEXCEPT(true);
192 native_handle_type my_handle;
194 thread_id_type my_thread_id;
195 #endif // _WIN32||_WIN64
197 void internal_wipe() __TBB_NOEXCEPT(true) {
203 void internal_move(tbb_thread_v3& x) __TBB_NOEXCEPT(true) {
204 if (joinable()) detach();
205 my_handle = x.my_handle;
207 my_thread_id = x.my_thread_id;
208 #endif // _WIN32||_WIN64
212 /** Runs start_routine(closure) on another thread and sets my_handle to the handle of the created thread. */
213 void __TBB_EXPORTED_METHOD internal_start( __TBB_NATIVE_THREAD_ROUTINE_PTR(start_routine),
215 friend void __TBB_EXPORTED_FUNC move_v3( tbb_thread_v3& t1, tbb_thread_v3& t2 );
216 friend void tbb::swap( tbb_thread_v3& t1, tbb_thread_v3& t2 ) __TBB_NOEXCEPT(true);
219 class tbb_thread_v3::id {
220 thread_id_type my_id;
221 id( thread_id_type id_ ) : my_id(id_) {}
223 friend class tbb_thread_v3;
225 id() __TBB_NOEXCEPT(true) : my_id(0) {}
227 friend bool operator==( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
228 friend bool operator!=( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
229 friend bool operator<( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
230 friend bool operator<=( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
231 friend bool operator>( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
232 friend bool operator>=( tbb_thread_v3::id x, tbb_thread_v3::id y ) __TBB_NOEXCEPT(true);
234 template<class charT, class traits>
235 friend std::basic_ostream<charT, traits>&
236 operator<< (std::basic_ostream<charT, traits> &out,
237 tbb_thread_v3::id id)
242 friend tbb_thread_v3::id __TBB_EXPORTED_FUNC thread_get_id_v3();
244 friend inline size_t tbb_hasher( const tbb_thread_v3::id& id ) {
245 __TBB_STATIC_ASSERT(sizeof(id.my_id) <= sizeof(size_t), "Implementation assumes that thread_id_type fits into machine word");
246 return tbb::tbb_hasher(id.my_id);
249 // A workaround for lack of tbb::atomic<id> (which would require id to be POD in C++03).
250 friend id atomic_compare_and_swap(id& location, const id& value, const id& comparand){
251 return as_atomic(location.my_id).compare_and_swap(value.my_id, comparand.my_id);
253 }; // tbb_thread_v3::id
255 tbb_thread_v3::id tbb_thread_v3::get_id() const __TBB_NOEXCEPT(true) {
257 return id(my_thread_id);
259 return id(my_handle);
260 #endif // _WIN32||_WIN64
263 void __TBB_EXPORTED_FUNC move_v3( tbb_thread_v3& t1, tbb_thread_v3& t2 );
264 tbb_thread_v3::id __TBB_EXPORTED_FUNC thread_get_id_v3();
265 void __TBB_EXPORTED_FUNC thread_yield_v3();
266 void __TBB_EXPORTED_FUNC thread_sleep_v3(const tick_count::interval_t &i);
268 inline bool operator==(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
270 return x.my_id == y.my_id;
272 inline bool operator!=(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
274 return x.my_id != y.my_id;
276 inline bool operator<(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
278 return x.my_id < y.my_id;
280 inline bool operator<=(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
282 return x.my_id <= y.my_id;
284 inline bool operator>(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
286 return x.my_id > y.my_id;
288 inline bool operator>=(tbb_thread_v3::id x, tbb_thread_v3::id y) __TBB_NOEXCEPT(true)
290 return x.my_id >= y.my_id;
293 } // namespace internal;
295 //! Users reference thread class by name tbb_thread
296 typedef internal::tbb_thread_v3 tbb_thread;
298 using internal::operator==;
299 using internal::operator!=;
300 using internal::operator<;
301 using internal::operator>;
302 using internal::operator<=;
303 using internal::operator>=;
305 inline void move( tbb_thread& t1, tbb_thread& t2 ) {
306 internal::move_v3(t1, t2);
309 inline void swap( internal::tbb_thread_v3& t1, internal::tbb_thread_v3& t2 ) __TBB_NOEXCEPT(true) {
310 std::swap(t1.my_handle, t2.my_handle);
312 std::swap(t1.my_thread_id, t2.my_thread_id);
313 #endif /* _WIN32||_WIN64 */
316 namespace this_tbb_thread {
317 inline tbb_thread::id get_id() { return internal::thread_get_id_v3(); }
318 //! Offers the operating system the opportunity to schedule another thread.
319 inline void yield() { internal::thread_yield_v3(); }
320 //! The current thread blocks at least until the time specified.
321 inline void sleep(const tick_count::interval_t &i) {
322 internal::thread_sleep_v3(i);
324 } // namespace this_tbb_thread
328 #endif /* __TBB_tbb_thread_H */