4
例如:在全局範圍聲明的thread_local變量是否已初始化?
#include <thread>
thread_local int n = 1;
void f()
{
++n; // is n initialized here for each thread or prior to entering f()?
}
int main()
{
std::thread ta(f);
std::thread tb(f);
ta.join();
tb.join();
}
它仍然沒有完全從here明確爲n初始化時。
線程初始化時。 –
對於每個線程(線程)初始化時。 –
相關:http://stackoverflow.com/questions/24253584/when-is-a-thread-local-global-variable-initialized –