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今天,我们聊一聊 malloc 函数在单片机程序设计中怎么使用。 目录: 前言 一、malloc 函数简介 二、malloc 之于单片机 2.1 malloc 函数申请的内存在哪里? 2.2 用与不用malloc的区别 三、malloc可能遇到的问题 3.1 内存碎片 3.2 内存管理 四、结语(用还是不用?) 一、前言 最近更新 RT-Thread 专栏到了内存管理 ...
malloc不是系统调用,它是一个正常函数,它必须调用某些系统调用才可以操作堆内存,通过使用strace工具可以追踪进程的系统调用和信号,为了确认系统调用是malloc产生的,所以在malloc前后添加write系统调用方便定位问题。
1. Reentrancy Reentrancy is only an issue if a function is called from multiple threads. It would be quite feasible to write a reentrant malloc () function, but it is also possible to use a standard ...
Malloc co-founders Liza Charalambous (left), Maria Terzi (middle), Artemis Kontou (right). Image Credits: Malloc/supplied ...
Hey All, I've got a problem with some C we are working on (embedded systems), right now we have a huge 2D array that works fine, it looks like this t_ourStructType Array[SIZE1][SIZE2]; I need to ...
Hi,I've been having some difficulty with a C assignment that I have (I'm starting to realize how much PHP and Java spoils me!). Its a simple cash register that asks for the type of purchase, then ...
Each time new memory is allocated with malloc (), a little more memory is obtained than requested. The memory routines use this extra memory for maintenance. To obtain the real amount of memory ...
A process' memory usually is classified as either static, the size is predetermined at compile time, or dynamic, space is allocated as needed at runtime. The latter, in turn, is divided into heap ...