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经(jīng )过(guò )阅读源(yuán )码,其(qí )实(shí )不少(shǎo )思路和(hé )Android的匿名内存有点相似阅读本文(wén )之前(qián )就(jiù )算不知道(dào )dma_buf的设计思想也没关(guān )系(xì ),我不(bú )会仔细(xì )到每(měi )一行,我(wǒ )会(huì )注重其在gralloc服务中(zhōng )的申(shēn )请(qǐng )流程(chéng ),看看ion是如(rú )何(hé )管理共享(xiǎng )内存,为什么要抛(pāo )弃ashmem我(wǒ )们

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