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经(jīng )过阅(yuè )读源(yuán )码,其实不少(shǎo )思路(lù )和Android的匿名内存(cún )有(yǒu )点(diǎn )相(xiàng )似阅(yuè )读本文之(zhī )前就算(suàn )不知道(dào )dma_buf的设计(jì )思想也(yě )没关(guān )系,我不(bú )会(huì )仔细到(dào )每(měi )一行(háng ),我会注重其在gralloc服(fú )务中的申请流程,看(kàn )看ion是如何管(guǎn )理共享(xiǎng )内存(cún ),为什(shí )么要抛弃ashmem我(wǒ )们

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