/**
@brief 线程自我主动阻塞
@note
如果当前线程异常，那么会返回失败，否则永远不会。
*/
bool fss_grab_buffer(void)
{
bool ret = true;
/* We are the one to wait the result */
ke_atomic_inc(&cache_desc()->recaller->desired);
/* Trigger recaller */
ke_event_set(cache_desc()->recaller->start_recall);
/* 等待完成，如果太多人都在等待，并且回收了很多的DBD，那么大家就会疯抢DBD，应该有个优先级控制 */
//TODO:增加优先级控制，避免疯抢！
if (ke_event_wait(cache_desc()->recaller->end_recall, KE_SYNC_WAIT_INFINITE) != KE_WAIT_OK)
ret = false;
return ret;
}
/**
@brief Thread synchronizing operation
@return kt_sync_wait_result
*/
static int thread_sync_ops(struct sysreq_thread_sync *req)
{
int i;
int ops = req->ops;
switch(ops)
{
/* 等待同步对象 */
case SYSREQ_THREAD_SYNC_WAIT_OBJS:
{
int count = req->detail.wait_objs.count;
struct kt_sync_base *sync_objs[Y_SYNC_MAX_OBJS_COUNT];
y_handle sync_handles[Y_SYNC_MAX_OBJS_COUNT];
kt_sync_wait_result ret = KE_WAIT_ERROR;
if (count > Y_SYNC_MAX_OBJS_COUNT)
goto wait_end;
for (i = 0; i < count; i++)
{
sync_handles[i] =(ke_handle)req->detail.wait_objs.sync_objects[i];
sync_objs[i] = ke_handle_translate(sync_handles[i]);
if (!sync_objs[i])
goto unwind_translate;
}
ret = kt_wait_objects(kt_current(), count, sync_objs,
req->detail.wait_objs.wait_all,
req->detail.wait_objs.timeout, NULL);
unwind_translate:
for (i = 0; i < count; i++)
{
if (sync_objs[i])
ke_handle_put(sync_handles[i], sync_objs[i]);
}
wait_end:
return ret;
}
case SYSREQ_THREAD_SYNC_WAIT_MS:
{
TODO("");
break;
}
case SYSREQ_THREAD_SYNC_EVENT:
{
ke_handle hevent;
struct ke_event *event;
switch (req->detail.event.ops)
{
case 's':
{
/* 唤醒线程，返回唤醒数量 */
int count;
hevent = req->detail.event.event;
if (!(event = ke_handle_translate(hevent)))
goto invalid_handle;
count = ke_event_set(event);
ke_handle_put(hevent, event);
return count;
}
case 'c':
{
/* Create event, return handle */
if (!(event = ke_event_object_create(req->detail.event.is_manual, req->detail.event.is_set)))
goto invalid_handle;
if (KE_INVALID_HANDLE == (hevent = ke_handle_create(event)))
{
km_vfree(event);
goto invalid_handle;
}
return hevent;
}
case 'd':
{
/* delete the event, cause everybody wakeup */
#if 0
hevent = req->detail.event.event;
if (!(event = ke_handle_translate(hevent)))
goto invalid_handle;
ke_handle_and_object_destory(hevent, event);
#else
TODO("事件对象用户模型还缺少cl_object的封装，无法销毁对象");
#endif
return 0;
}
}
break;
}
}
invalid_handle:
return KE_INVALID_HANDLE;
}
/**
****************************************************************************************
* @brief Handles the 1 second tick (call back).
*****************************************************************************************
*/
static void app_display_sec_tick_cbck(void)
{
ke_event_set(KE_EVENT_RTC_1S_TICK);
}