经过阅读源码,其实(shí )不少思路(lù )和Android的匿名(míng )内存有(yǒu )点(diǎn )相(xiàng )似(sì )阅读本(běn )文之(zhī )前就算不(bú )知道(dào )dma_buf的(de )设计思想(xiǎng )也没关(guān )系(xì ),我不会仔细(xì )到每(měi )一(yī )行,我会注重其在gralloc服务(wù )中的申请流(liú )程,看看(kàn )ion是(shì )如何(hé )管理共享(xiǎng )内存,为(wéi )什(shí )么要抛(pāo )弃ashmem我们
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