s32 LWP_JoinThread(lwp_t thethread,void **value_ptr)
{
u32 level;
void *return_ptr;
lwp_cntrl *exec,*lwp_thread;
lwp_thread = __lwp_cntrl_open(thethread);
if(!lwp_thread) return 0;
if(__lwp_thread_isexec(lwp_thread)) {
__lwp_thread_dispatchenable();
return EDEADLK; //EDEADLK
}
exec = _thr_executing;
_CPU_ISR_Disable(level);
__lwp_threadqueue_csenter(&lwp_thread->join_list);
exec->wait.ret_code = 0;
exec->wait.ret_arg_1 = NULL;
exec->wait.ret_arg = (void*)&return_ptr;
exec->wait.queue = &lwp_thread->join_list;
exec->wait.id = thethread;
_CPU_ISR_Restore(level);
__lwp_threadqueue_enqueue(&lwp_thread->join_list,LWP_WD_NOTIMEOUT);
__lwp_thread_dispatchenable();
if(value_ptr) *value_ptr = return_ptr;
return 0;
}
u32 __lwp_sema_seize(lwp_sema *sema,u32 id,u32 wait,u64 timeout)
{
u32 level;
lwp_cntrl *exec;
exec = _thr_executing;
exec->wait.ret_code = LWP_SEMA_SUCCESSFUL;
_CPU_ISR_Disable(level);
if(sema->count!=0) {
--sema->count;
_CPU_ISR_Restore(level);
return LWP_SEMA_SUCCESSFUL;
}
if(!wait) {
_CPU_ISR_Restore(level);
exec->wait.ret_code = LWP_SEMA_UNSATISFIED_NOWAIT;
return LWP_SEMA_UNSATISFIED_NOWAIT;
}
__lwp_threadqueue_csenter(&sema->wait_queue);
exec->wait.queue = &sema->wait_queue;
exec->wait.id = id;
_CPU_ISR_Restore(level);
__lwp_threadqueue_enqueue(&sema->wait_queue,timeout);
return LWP_SEMA_SUCCESSFUL;
}
s32 LWP_ThreadSleep(lwpq_t thequeue)
{
u32 level;
tqueue_st *tq;
lwp_cntrl *exec = NULL;
tq = __lwp_tqueue_open(thequeue);
if(!tq) return -1;
exec = _thr_executing;
_CPU_ISR_Disable(level);
__lwp_threadqueue_csenter(&tq->tqueue);
exec->wait.ret_code = 0;
exec->wait.ret_arg = NULL;
exec->wait.ret_arg_1 = NULL;
exec->wait.queue = &tq->tqueue;
exec->wait.id = thequeue;
_CPU_ISR_Restore(level);
__lwp_threadqueue_enqueue(&tq->tqueue,LWP_THREADQ_NOTIMEOUT);
__lwp_thread_dispatchenable();
return 0;
}
static s32 __lwp_cond_waitsupp(cond_t cond,mutex_t mutex,u64 timeout,u8 timedout)
{
u32 status,mstatus,level;
cond_st *thecond = __lwp_cond_open(cond);
if(!thecond) return -1;
if(thecond->lock!=LWP_MUTEX_NULL && thecond->lock!=mutex) {
__lwp_thread_dispatchenable();
return EINVAL;
}
LWP_MutexUnlock(mutex);
if(!timedout) {
thecond->lock = mutex;
_CPU_ISR_Disable(level);
__lwp_threadqueue_csenter(&thecond->wait_queue);
_thr_executing->wait.ret_code = 0;
_thr_executing->wait.queue = &thecond->wait_queue;
_thr_executing->wait.id = cond;
_CPU_ISR_Restore(level);
__lwp_threadqueue_enqueue(&thecond->wait_queue,timeout);
__lwp_thread_dispatchenable();
status = _thr_executing->wait.ret_code;
if(status && status!=ETIMEDOUT)
return status;
} else {
__lwp_thread_dispatchenable();
status = ETIMEDOUT;
}
mstatus = LWP_MutexLock(mutex);
if(mstatus)
return EINVAL;
return status;
}
