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经过阅读源码,其实(shí )不少思路和Android的匿名内存(cún )有(yǒu )点(diǎn )相(xiàng )似(sì )阅读(dú )本文之(zhī )前就算不知道(dào )dma_buf的设(shè )计思想也(yě )没关系(xì ),我不会(huì )仔细到每一(yī )行(háng ),我(wǒ )会(huì )注重其(qí )在(zài )gralloc服务中(zhōng )的申(shēn )请(qǐng )流(liú )程,看看ion是如何管(guǎn )理共享(xiǎng )内存(cún ),为什么要(yào )抛弃ashmem我(wǒ )们

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