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/**
* @brief C11 Threads Example
*/
/*
* This file's license is 2-clause BSD as in this distribution's
* LICENSE.2 file.
*/
#include <stdio.h>
#include <stdlib.h>
#include <threads.h>
#include <assert.h>
static thrd_t thread1;
static thrd_t thread2;
static tss_t tss1;
typedef struct {
int thread_specific_value;
} tss_data_t;
void *tss_alloc(int value)
{
void *p;
tss_data_t *k;
p = malloc(sizeof(tss_data_t));
k = (tss_data_t *)p;
k->thread_specific_value = value;
return p;
}
void tss_free(void *p)
{
free(p);
}
int Thread1_Body(void *arg)
{
thrd_t *t = (thrd_t *) arg;
int rc;
tss_data_t *td;
printf("Thread1(0x%08lx)\n", *t);
assert(thrd_current() == thread1);
puts("Thread1 - Assign TSS value for self");
rc = tss_set(tss1, tss_alloc(1));
assert(rc == thrd_success);
puts("Thread1 - yield" );
thrd_yield();
td = (tss_data_t *) tss_get(tss1);
printf("Thread1 - tss value = %d\n", td->thread_specific_value);
puts("Thread1 - exit" );
thrd_exit(0);
return 0;
}
int Thread2_Body(void *arg)
{
thrd_t *t = (thrd_t *) arg;
int rc;
tss_data_t *td;
printf("Thread2(0x%08lx)\n", *t);
assert(thrd_current() == thread2);
puts("Thread2 - Assign TSS value for self");
rc = tss_set(tss1, tss_alloc(2));
assert(rc == thrd_success);
puts("Thread2 - yield" );
thrd_yield();
td = (tss_data_t *) tss_get(tss1);
printf("Thread2 - tss value = %d\n", td->thread_specific_value);
puts("Thread2 - exit" );
thrd_exit(128);
return 0;
}
int main(int argc, char **argv)
{
int rc;
struct timespec delay = {1, 0};
tss_data_t *td;
puts("*** START OF C11 KEY EXAMPLE ***");
puts("main - Create Thread1");
rc = thrd_create(&thread1, Thread1_Body, &thread1);
assert(rc == thrd_success);
puts("main - Create Thread2");
rc = thrd_create(&thread2, Thread2_Body, &thread2);
assert(rc == thrd_success);
puts("main - Create TSS instance");
rc = tss_create(&tss1, tss_free);
assert(rc == thrd_success);
puts("main - Assign TSS value for self");
rc = tss_set(tss1, tss_alloc(128));
assert(rc == thrd_success);
puts("main - sleep and let threads run");
rc = thrd_sleep(&delay, NULL);
assert(rc == 0);
td = (tss_data_t *) tss_get(tss1);
printf("main - tss value = %d\n", td->thread_specific_value);
puts("main - Delete TSS instance");
tss_delete(tss1);
puts("*** END OF C11 KEY EXAMPLE ***");
return 0;
}
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