在多线程开发过程中很多人应该都会遇到死锁问题，死锁问题也是面试过程中经常被问到的问题，这里介绍在c++中如何使用gdb+python脚本调试死锁问题，以及如何在程序运行过程中检测死锁。 首先介绍什么是死锁，看下维基百科中的定义： 死锁（英语：Deadlock ...

我们遇到嵌入式软件崩溃时，在深入代码之前，应先建立全局视角，先明确是什么类型的崩溃。嵌入式软件崩溃可归纳为四大类： 段错误是内核告诉我们：程序访问了不该访问的内存地址。这是嵌入式开发中遇到最多的崩溃类型。 dmesg会显示segfault at 0，地址0 ...

Abstract: This article finds that existing mutex locks suffer from throughput collapses or latency collapses, or both, in the oversubscribed scenarios where applications create more threads than the ...

When allocating a given size of block, a header is also stored which contains the size of the block, and pointer to the previous header in the buffer. This is required to merge neighbouring blocks ...

// this structure identifies each area of memory that that has been allocated or freed. // adjacent free cells will be merged and the second cell will be removed.