std::this_thread::get_id

 

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執行緒 thread (C++11) jthread (C++20) hardware_destructive_interference_sizehardware_constructive_interference_size (C++17)(C++17) this_thread 名稱空間 get_id (C++11) yield (C++11) sleep_for (C++11) sleep_until (C++11) 協同取消 stop_token (C++20) inplace_stop_token (C++26) never_stop_token (C++26) stop_source (C++20) inplace_stop_source (C++26)   stop_callback (C++20) inplace_stop_callback (C++26) stop_callback_for_t (C++26) stoppable_token (C++26) unstoppable_token (C++26) stoppable-source (C++26) stoppable-callback-for (C++26)   互斥 mutex (C++11) recursive_mutex (C++11) shared_mutex (C++17) timed_mutex (C++11) recursive_timed_mutex (C++11) shared_timed_mutex (C++14) 通用鎖管理 lock (C++11) lock_guard (C++11) scoped_lock (C++17) unique_lock (C++11) shared_lock (C++14) once_flag (C++11) call_once (C++11) try_lock (C++11) defer_locktry_to_lockadopt_lockdefer_lock_ttry_to_lock_tadopt_lock_t (C++11)(C++11)(C++11)(C++11)(C++11)(C++11) 條件變數 condition_variable (C++11) condition_variable_any (C++11) notify_all_at_thread_exit (C++11) cv_status (C++11) 訊號量 counting_semaphorebinary_semaphore (C++20)(C++20) 門閂和屏障 latch (C++20) barrier (C++20) 期值 promise (C++11) future (C++11) shared_future (C++11) packaged_task (C++11) async (C++11) launch (C++11) future_status (C++11) future_error (C++11) future_category (C++11) future_errc (C++11) 安全回收 rcu_obj_base (C++26) rcu_domain (C++26) rcu_default_domain (C++26) rcu_synchronize (C++26) rcu_barrier (C++26) rcu_retire (C++26) 危險指標 hazard_pointer_obj_base (C++26) hazard_pointer (C++26) make_hazard_pointer (C++26)

原子型別 atomic (C++11) atomic_ref (C++20) atomic_flag (C++11) 原子型別的初始化 atomic_init (C++11)(C++20 中已棄用) ATOMIC_VAR_INIT (C++11)(C++20 中已棄用) ATOMIC_FLAG_INIT (C++11) 記憶體排序 memory_order (C++11) kill_dependency (C++11)(C++26 中已棄用) atomic_thread_fence (C++11) atomic_signal_fence (C++11) 原子操作的自由函式 atomic_storeatomic_store_explicit (C++11)(C++11) atomic_loadatomic_load_explicit (C++11)(C++11) atomic_exchangeatomic_exchange_explicit (C++11)(C++11) atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit (C++11)(C++11)(C++11)(C++11) atomic_fetch_addatomic_fetch_add_explicit (C++11)(C++11) atomic_fetch_subatomic_fetch_sub_explicit (C++11)(C++11) atomic_fetch_andatomic_fetch_and_explicit (C++11)(C++11) atomic_fetch_oratomic_fetch_or_explicit (C++11)(C++11) atomic_fetch_xoratomic_fetch_xor_explicit (C++11)(C++11) atomic_fetch_maxatomic_fetch_max_explicit (C++26)(C++26) atomic_fetch_minatomic_fetch_min_explicit (C++26)(C++26) atomic_is_lock_free (C++11) atomic_waitatomic_wait_explicit (C++20)(C++20) atomic_notify_one (C++20) atomic_notify_all (C++20) 原子標誌的自由函式 atomic_flag_test_and_setatomic_flag_test_and_set_explicit (C++11)(C++11) atomic_flag_clearatomic_flag_clear_explicit (C++11)(C++11) atomic_flag_testatomic_flag_test_explicit (C++20)(C++20) atomic_flag_waitatomic_flag_wait_explicit (C++20)(C++20) atomic_flag_notify_one (C++20) atomic_flag_notify_all (C++20)

 

定義於標頭檔案 <thread>
std::thread::id get_id() noexcept;		(C++11 起)

返回當前執行緒的 id。

引數

(無)

返回值

當前執行緒的 id。

示例

執行此程式碼

#include <chrono>
#include <iostream>
#include <syncstream>
#include <thread>
using namespace std::chrono_literals;
 
void foo()
{
    std::thread::id this_id = std::this_thread::get_id();
 
    std::osyncstream(std::cout) << "thread " << this_id << " sleeping...\n";
 
    std::this_thread::sleep_for(500ms);
}
 
int main()
{
    std::jthread t1{foo};
    std::jthread t2{foo};
}

可能的輸出

thread 140113018054400 sleeping...
thread 140113009661696 sleeping...

參閱

get_id	返回執行緒的 id (std::thread 的公開成員函式)
C 文件 關於 thrd_current