void FrameControl_Remain( FrameControl ctx )
{
int64_t current_time;
unsigned int n_ms, lost_ms;
if( ctx->state == STATE_QUIT ) {
return;
}
lost_ms = 0;
current_time = LCUI_GetTime();
LCUIMutex_Lock( &ctx->mutex );
n_ms = (unsigned int)(current_time - ctx->prev_frame_start_time);
if( n_ms > ctx->one_frame_remain_time ) {
goto normal_exit;
}
n_ms = ctx->one_frame_remain_time - n_ms;
if( n_ms < 1 ) {
goto normal_exit;
}
/* 睡眠一段时间 */
while( lost_ms < n_ms && ctx->state == STATE_RUN ) {
LCUICond_TimedWait( &ctx->cond, &ctx->mutex, n_ms - lost_ms );
lost_ms = (unsigned int)LCUI_GetTimeDelta( current_time );
}
/* 睡眠结束后，如果当前状态为 PAUSE，则说明睡眠是因为要暂停而终止的 */
if( ctx->state == STATE_PAUSE ) {
current_time = LCUI_GetTime();
/* 等待状态改为“继续” */
while( ctx->state == STATE_PAUSE ) {
LCUICond_Wait( &ctx->cond, &ctx->mutex );
}
lost_ms = (unsigned int)LCUI_GetTimeDelta( current_time );
ctx->pause_time = lost_ms;
ctx->prev_frame_start_time += lost_ms;
LCUIMutex_Unlock( &ctx->mutex );
return;
}
normal_exit:;
current_time = LCUI_GetTime();
if( current_time - ctx->prev_fps_update_time >= 1000 ) {
ctx->current_fps = ctx->temp_fps;
ctx->prev_fps_update_time = current_time;
ctx->temp_fps = 0;
}
ctx->prev_frame_start_time = current_time;
++ctx->temp_fps;
LCUIMutex_Unlock( &ctx->mutex );
}
void LCUIStats_End(LCUI_Stats stats)
{
stats->total_time = (uint32_t)LCUI_GetTimeDelta(stats->start_time);
if (stats->total_time > 100) {
LOG("[stats] \e[1;33mwarning:\e[0m current frame takes "
"too long\n");
LCUIStats_Print(stats);
}
void LCUIStats_RecordTime(LCUI_Stats stats, unsigned num)
{
unsigned i;
uint32_t delta;
delta = (uint32_t)LCUI_GetTimeDelta(stats->start_time);
for (i = 0; i < num && i < 4; ++i) {
if (delta > stats->time_list[i]) {
delta -= stats->time_list[i];
} else {
delta = 0;
break;
}
}
stats->time_list[num] = delta;
}
