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经(jīng )过(guò )阅(yuè )读源(yuán )码,其(qí )实不少思路(lù )和(hé )Android的匿名(míng )内存有(yǒu )点(diǎn )相似(sì )阅读本文之前(qián )就算不知(zhī )道dma_buf的设计思想也(yě )没关系,我不(bú )会仔细(xì )到每一行,我会注重其在(zài )gralloc服务中(zhōng )的申(shēn )请流程,看(kàn )看ion是(shì )如何管(guǎn )理(lǐ )共享内存,为什(shí )么(me )要抛弃ashmem我(wǒ )们

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