// gcc   -g -O0 -fPIC -shared -o libthreadfunc.so tls_func.c -lpthread
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include <string.h>

#define TLS_SIZE 8192UL

static __thread char g_sArray[TLS_SIZE ] ;


void* thread_func(void* arg) {
    pthread_t tid = pthread_self();

    memset(g_sArray, 0, sizeof(g_sArray));
    
    snprintf(g_sArray, sizeof(g_sArray), "Thread ID: %lu", (unsigned long)tid);

    printf("g_sArray:%s\n", g_sArray);

    pthread_detach(pthread_self());

    return NULL;
}