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#include "unity.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <sys/delay.h>
#define NUM_THREADS 2
static pthread_t threads[NUM_THREADS];
static void *thread1(void *args) {
int count = 0;
for (count = 0; count < 100; count++) {
// Simulate some work
usleep(1000);
}
int *ret = malloc(sizeof(int));
*ret = count;
pthread_exit(ret);
}
static void *thread2(void *args) {
int count;
for (count = 0; count < 50; count++) {
// Simulate some work
usleep(1000);
}
int *ret = malloc(sizeof(int));
*ret = count;
pthread_exit(ret);
}
TEST_CASE("pthread join", "[pthread]") {
pthread_attr_t attr;
int i, ret;
int *res;
ret = pthread_attr_init(&attr);
TEST_ASSERT(ret == 0);
ret = pthread_create(&threads[0], &attr, thread1, NULL);
TEST_ASSERT(ret == 0);
ret = pthread_create(&threads[1], &attr, thread2, NULL);
TEST_ASSERT(ret == 0);
// Wait for all threads completion
for (i=0; i< NUM_THREADS; i++) {
ret = pthread_join(threads[i], (void **)&res);
TEST_ASSERT(ret == 0);
if (i == 0) {
TEST_ASSERT(*res == 100);
} else if (i == 1) {
TEST_ASSERT(*res == 50);
}
free(res);
}
// Check that a detached thread is not joinable
ret = pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
TEST_ASSERT(ret == 0);
ret = pthread_create(&threads[0], &attr, thread1, NULL);
TEST_ASSERT(ret == 0);
ret = pthread_join(threads[0], (void **)&res);
TEST_ASSERT(ret == EINVAL);
// Clean up
ret = pthread_attr_destroy(&attr);
TEST_ASSERT(ret == 0);
}
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