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经过阅读(dú )源(yuán )码,其实不(bú )少思路(lù )和(hé )Android的匿(nì )名内存有(yǒu )点相似(sì )阅(yuè )读(dú )本(běn )文之(zhī )前(qián )就算不知道dma_buf的设计(jì )思想也没关系(xì ),我不会仔细(xì )到每一行,我会(huì )注(zhù )重其在(zài )gralloc服务中(zhōng )的申请流程,看看ion是如何管(guǎn )理(lǐ )共享内(nèi )存,为什(shí )么要(yào )抛(pāo )弃ashmem我们(men )

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