因為接口僅僅定義了一個入參void *arg

int pthread_create(pthread_t *tidp,const pthread_attr_t *attr, (void*)(*start_rtn)(void*),void *arg);

所以，假設想傳參數，須要封裝結構體。將多個參數通過一個結構體傳入線程。

typedef struct
{
    FUNCPTR entry; /* 函數入口*/
    void *arg[10]; /* 參數*/
}FUNC;

void *start(void *arg)
{

    FUNC *func = NULL;

    (*(func->entry))(func->arg[0], func->arg[1], func->arg[2], func->arg[3], func->arg[4],
            func->arg[5], func->arg[6], func->arg[7], func->arg[8], func->arg[9]);
    return NULL;

}

int PTHREAD_CTREATE(pthread_t *tidp,const pthread_attr_t *attr, void *(*funcptr)(void *, void *， void *), unsigned args, ...)
{

    /* 構造函數集合的結構體 */

    FUNC function = {0};

    function.entry = funcptr;

    for (i = 0; i < args; i++)
    {
        func->arg[i] = arg[i];
    }

 

    //設置線程屬性(略)

    pthread_create(NULL, &attr, start, (void *)&function);

    return 0;

｝

 

pthread_create()創建線程時傳入多個參數