经过阅(yuè )读(dú )源码(mǎ ),其实不少思路和(hé )Android的匿名(míng )内存有点相(xiàng )似阅读本文(wén )之前(qián )就(jiù )算(suàn )不(bú )知(zhī )道dma_buf的设计(jì )思(sī )想也没关系,我不会仔细到每一行,我会(huì )注重其在gralloc服务中(zhōng )的申请(qǐng )流程,看看(kàn )ion是(shì )如何管理(lǐ )共(gòng )享内(nèi )存(cún ),为什么要(yào )抛(pāo )弃ashmem我们
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