linux线程 局部变量

#include <stdio.h>
#include <pthread.h>

__thread int thread_local_var = 0;

void* thread_func(void* arg) {
    thread_local_var++;
    printf("Thread ID: %ld, Local Var: %d
", pthread_self(), thread_local_var);
    return NULL;
}

int main() {
    pthread_t threads[5];
    for (int i = 0; i < 5; ++i) {
        pthread_create(&threads[i], NULL, thread_func, NULL);
    }
    for (int i = 0; i < 5; ++i) {
        pthread_join(threads[i], NULL);
    }
    return 0;
}

#include <iostream>
#include <thread>

thread_local int thread_local_var = 0;

void thread_func() {
    thread_local_var++;
    std::cout << "Thread ID: " << std::this_thread::get_id() << ", Local Var: " << thread_local_var << std::endl;
}

int main() {
    std::thread threads[5];
    for (int i = 0; i < 5; ++i) {
        threads[i] = std::thread(thread_func);
    }
    for (auto& th : threads) {
        th.join();
    }
    return 0;
}