经过阅(yue)读源码,其实(shi)不(bu)少(shao)思路(lu)和(he)Android的匿名内存(cun)有点(dian)相(xiang)似阅读本文之前就算(suan)不知(zhi)道(dao)dma_buf的设(she)计思想(xiang)也没关系,我不会(hui)仔细到(dao)每一行,我会注重(chong)其在gralloc服(fu)务中(zhong)的申请流程,看看ion是(shi)如何管理共享内存,为什(shi)么(me)要抛弃ashmem我们(men)
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