经过(guo)阅读源码,其实不(bu)少思路和Android的匿(ni)名内存有点相(xiang)似阅读本(ben)文之前(qian)就算不知道dma_buf的设计思(si)想也没关系(xi),我不(bu)会仔(zai)细到(dao)每(mei)一行,我(wo)会(hui)注(zhu)重其在gralloc服务中(zhong)的申(shen)请流程,看看ion是如何管(guan)理共(gong)享内存,为(wei)什么(me)要抛弃(qi)ashmem我们
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