经(jīng )过阅(yuè )读源(yuán )码,其实不少(shǎo )思(sī )路和Android的匿名内存有(yǒu )点相似阅读本(běn )文之前就算(suàn )不知道(dào )dma_buf的(de )设计思(sī )想(xiǎng )也(yě )没关(guān )系,我(wǒ )不会(huì )仔(zǎi )细(xì )到每一(yī )行,我会(huì )注(zhù )重其在gralloc服(fú )务中的申请流程,看看ion是(shì )如何管(guǎn )理共享(xiǎng )内存,为(wéi )什么要(yào )抛(pāo )弃ashmem我们
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