经过阅读(dú )源(yuán )码,其实不少思(sī )路(lù )和Android的(de )匿名(míng )内存有点相似阅(yuè )读本文(wén )之前就(jiù )算不知道dma_buf的设计(jì )思想也(yě )没关系,我不会仔(zǎi )细到每一行,我会注重其(qí )在(zài )gralloc服(fú )务中(zhōng )的申请流程(chéng ),看看(kàn )ion是如(rú )何(hé )管(guǎn )理共享内存(cún ),为(wéi )什(shí )么要(yào )抛弃ashmem我们(men )
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