经过阅读(du)源码,其实(shi)不少思路和Android的匿名内存(cun)有(you)点(dian)相(xiang)似阅(yue)读本文之前(qian)就算不知道dma_buf的设计思(si)想也没关系,我不会仔细(xi)到每一行,我(wo)会注重其在(zai)gralloc服务中(zhong)的申请流程,看(kan)看ion是如何管理共享内(nei)存,为(wei)什(shi)么要抛(pao)弃ashmem我(wo)们(men)
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