经过阅读源码(mǎ ),其实(shí )不少(shǎo )思路和Android的匿(nì )名内(nèi )存(cún )有(yǒu )点相(xiàng )似阅读(dú )本文(wén )之前(qián )就算不知道dma_buf的设计思(sī )想(xiǎng )也没关系(xì ),我不会仔(zǎi )细到每(měi )一行,我会注重(chóng )其(qí )在gralloc服(fú )务中的申(shēn )请流程,看(kàn )看(kàn )ion是(shì )如何管(guǎn )理(lǐ )共享内存,为什(shí )么要(yào )抛弃ashmem我们
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