下面是我的公式來檢查剩余的內存量(不是多少內存保留在當前堆，但在應用程序崩潰之前可以利用多少內存)。我不能遠程確定這是正確的，是嗎？

double max = Runtime.getRuntime().maxMemory(); //the maximum memory the app can use

double heapSize = Runtime.getRuntime().totalMemory(); //current heap size

double heapRemaining = Runtime.getRuntime().freeMemory(); //amount available in heap

double nativeUsage = Debug.getNativeHeapAllocatedSize(); //is this right? I only want to account for native memory that my app is being "charged" for. Is this the proper way to account for that?

//heapSize - heapRemaining = heapUsed + nativeUsage = totalUsage

double remaining = max - (heapSize - heapRemaininng + nativeUsage);

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