main.c
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/*
* Copyright (C) 2014 Hamburg University of Applied Sciences (HAW)
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief pthread tls test application
*
* @author Martin Landsmann <martin.landsmann@haw-hamburg.de>
*
* @}
*/
#include <stdio.h>
#include "pthread.h"
#define NUMBER_OF_TLS (20)
void *run(void *parameter)
{
pthread_key_t aKeys[NUMBER_OF_TLS];
int aTLS_values[NUMBER_OF_TLS];
(void)parameter;
printf("\n-= TEST 1 - create %d tls with sequencial values 0...%d =-\n", NUMBER_OF_TLS, NUMBER_OF_TLS - 1);
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
aTLS_values[i] = i;
pthread_key_create(&(aKeys[i]), NULL);
pthread_setspecific(aKeys[i], &aTLS_values[i]);
}
printf("now rise sequencial by one values 1...%d\n", NUMBER_OF_TLS);
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
aTLS_values[i]++;
}
printf("pick deliberate storage (key[3]:%d) and change the value\n", (int)aKeys[3]);
void *val = pthread_getspecific(aKeys[3]);
*((int *)val) = 42;
printf("show tls values:\n");
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
void *val = pthread_getspecific(aKeys[i]);
int x = *(int *)val;
printf("key[%d]: %d, val: %d\n",i, (int)aKeys[i], x);
}
printf("\n -= TEST 2 - delete deliberate key (key[5]:%d) =-\n", (int)aKeys[5]);
pthread_key_delete(aKeys[5]);
printf("show tls values:\n");
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
void *val = pthread_getspecific(aKeys[i]);
if (val != NULL) {
int x = *(int *)val;
printf("key[%d]: %d, val: %d\n",i, (int)aKeys[i], x);
}
}
printf("\n-= TEST 3 - create new tls =-\n");
int new_val = 99;
pthread_key_t new_key;
pthread_key_create(&new_key, NULL);
pthread_setspecific(new_key, &new_val);
printf("added new tls, key: %d, val: %d\n", (int)new_key, new_val);
printf("show tls values:\n");
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
void *val = pthread_getspecific(aKeys[i]);
if (val != NULL) {
int x = *(int *)val;
printf("key[%d]: %d, val: %d\n",i, (int)aKeys[i], x);
}
}
printf("\n-= TEST 4 - delete all keys =-\n");
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
pthread_key_delete(aKeys[i]);
}
printf("show tls values:\n");
for (int i = 0; i < NUMBER_OF_TLS; ++i) {
void *val = pthread_getspecific(aKeys[i]);
if (val != NULL) {
int x = *(int *)val;
printf("key[%d]: %d, val: %d\n",i, (int)aKeys[i], x);
}
}
printf("\n-= TEST 5 - try delete non-existing key =-\n");
printf("try to delete returns: %d\n", pthread_key_delete((pthread_key_t)99));
printf("\n-= TEST 6 - add key and delete without a tls =-\n");
pthread_key_create(&new_key, NULL);
printf("crated key: %d\n", (int)new_key);
printf("try to delete returns: %d\n", pthread_key_delete(new_key));
printf("\n-= TEST 7 - add key without tls =-\n");
pthread_key_create(&new_key, NULL);
printf("crated key: %d\n", (int)new_key);
void* test_7_val = pthread_getspecific(new_key);
printf("test_7_val: %p\n", test_7_val);
return NULL;
}
int main(void)
{
pthread_t th_id;
pthread_attr_t th_attr;
pthread_attr_init(&th_attr);
pthread_create(&th_id, &th_attr, run, NULL);
size_t res;
pthread_join(th_id, (void **) &res);
puts("\ntls tests finished.");
return 0;
}