#include "thread.h"

static thread_handle_t myThdHandles[THREAD_ID_MAX]={0};


int thread_start(int id, thread_fn fn, void *arg, int stksize, int prio)
{
    int r;
    pthread_attr_t attr;

    if(id>=THREAD_ID_MAX) {
        return -1;        
    }
    thread_handle_t *h=&myThdHandles[id];

    h->arg  = arg;
    h->quit = 0;

    r = pthread_attr_init(&attr);
    if(r) {
        printf("____ thread %d attr init failed\n", id);
        return -1;
    }

#if 0
    h->stk = malloc(stksize);
    if(h->stk) {
        r = pthread_attr_setstack(h->stk, stksize);
        if(r) {
            printf("____ thread %d attr setstack failed\n", id);
        }
    }
    else {
        r = pthread_attr_setstacksize(&attr, stksize);
        if(r) {
            printf("____ thread %d attr setstacksize %d failed\n", id, stksize);
        }
    }
#endif
    
    r = pthread_create(&h->tid, &attr, fn, h);
    pthread_attr_destroy(&attr);

    return r;
}

int thread_stop(int id)
{
    if(id>=THREAD_ID_MAX) {
        return -1;
    }
    thread_handle_t *h=&myThdHandles[id];

    h->quit = 1;
    pthread_join(h->tid, NULL);
    h->tid = 0;
    h->arg = NULL;
    h->fn  = NULL;
    
    return 0;
}


int thread_stop_all(void)
{
    int i;

    for(i=0; i<THREAD_ID_MAX; i++) {
        thread_stop(i);
    }

    return 0;
}


int thread_start_simp(thread_fn fn, void *arg, int stksize)
{
    int r;
    pthread_t tid;
    pthread_attr_t attr;

    pthread_attr_init(&attr);
    pthread_attr_setstacksize(&attr, stksize);
    
    r = pthread_create(&tid, &attr, fn, arg);
    pthread_attr_destroy(&attr);

    return r;
}


int thread_print_stacksize(void)
{
    int r;
    size_t size;
    pthread_attr_t attr;

    r = pthread_attr_init(&attr);
    if(r) {
        printf("___ print stacksize, attr init failed\n");
        return -1;
    }
    r = pthread_attr_getstacksize(&attr, &size);
    if(r) {
        printf("___ print stacksize, attr init failed\n");
    }
    else {
        printf("_____ stacksize: %dMB\n", size/MB);
    }
    pthread_attr_destroy(&attr);
    return r;
}