经(jīng )过(guò )阅(yuè )读(dú )源码,其实不(bú )少思(sī )路(lù )和Android的匿名内存有点相似阅读本(běn )文之前就算不(bú )知道dma_buf的设计思想也没关系,我(wǒ )不会仔(zǎi )细到(dào )每一行,我(wǒ )会(huì )注(zhù )重其在gralloc服(fú )务中的申请(qǐng )流(liú )程,看(kàn )看ion是如(rú )何管(guǎn )理共享内存,为什(shí )么(me )要(yào )抛弃ashmem我们
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