经(jing)过阅读源码(ma),其(qi)实不(bu)少(shao)思路和Android的(de)匿(ni)名内(nei)存有点(dian)相(xiang)似阅读本文之(zhi)前(qian)就算不(bu)知(zhi)道dma_buf的设计思想也没关系,我不会仔细到每一行,我会注重(chong)其在gralloc服务(wu)中(zhong)的申(shen)请流程,看看ion是如何管(guan)理共享内存,为什(shi)么要抛弃(qi)ashmem我们
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