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std::thread::joinable

提供: cppreference.com
< cpp‎ | thread‎ | thread

 
 
スレッドのサポートライブラリ
スレッド
Original:
Threads
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thread(C++11)
this_thread空間
Original:
this_thread namespace
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get_id(C++11)
yield(C++11)
sleep_for(C++11)
sleep_until(C++11)
相互排除
Original:
Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
汎用のロック管理
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Generic lock management
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lock_guard(C++11)
unique_lock(C++11)
defer_lock_t
try_to_lock_t
adopt_lock_t
(C++11)
(C++11)
(C++11)
lock(C++11)
try_lock(C++11)
defer_lock
try_to_lock
adopt_lock
(C++11)
(C++11)
(C++11)
条件変数
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Condition variables
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condition_variable(C++11)
condition_variable_any(C++11)
notify_all_at_thread_exit(C++11)
cv_status(C++11)
先物
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Futures
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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)
 
std::thread
メンバークラス
Original:
Member classes
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thread::id
メンバ関数
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Member functions
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thread::thread
thread::~thread
thread::operator=
オブザーバー
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Observers
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thread::joinable
thread::get_id
thread::native_handle
thread::hardware_concurrency
操作
Original:
Operations
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thread::join
thread::detach
thread::swap
非メンバ関数
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Non-member functions
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std::swap
 
bool joinable();
(C++11およびそれ以降)
スレッドオブジェクトかどうかをチェックし、実行のアクティブスレッドを識別します。具体的には、戻りtrueget_id() != std::thread::id()IF.
Original:
Checks if the thread object identifies an active thread of execution. Specifically, returns true if get_id() != std::thread::id().
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目次

[編集] パラメータ

(なし)
Original:
(none)
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[編集] 値を返します

trueスレッドオブジェクトは、実行のアクティブなスレッドを識別する場合、falseそうでなければ
Original:
true if the thread object identifies an active thread of execution, false otherwise
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[編集] 例外

noexcept specification:  
noexcept
  (C++11およびそれ以降)

[編集]

#include <iostream>
#include <thread>
#include <chrono>
 
void foo()
{
    std::this_thread::sleep_for(std::chrono::seconds(1));
}
 
int main()
{
    std::thread t;
    std::cout << "before starting, joinable: " << t.joinable() << '\n';
 
    t = std::thread(foo);
    std::cout << "after starting, joinable: " << t.joinable() << '\n';
 
    t.join();
}

Output:

before starting, joinable: 0
after starting, joinable: 1

[編集] も参照してください

'スレッドのIDを返します
Original:
returns the id of the thread
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(パブリックメンバ関数) [edit]
その実行を終了するスレッドの終了を待ちます
Original:
waits for a thread to finish its execution
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(パブリックメンバ関数) [edit]
スレッドハンドルから独立して実行するスレッドを許可します
Original:
permits the thread to execute independently from the thread handle
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(パブリックメンバ関数) [edit]