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IMDSI22、SPFEC12

IMDSI22、SPFEC12

您迈开询价的一小步，我还您成功的一大步。

c). 测试core dumps功能

./编写下面简单程序用于测试core dumps功能

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#include

 

int main()

{

int *p = NULL;

std::cout<<*p<

return 0;

}

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./编译并执行，可以看到core dumps功能启动了

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ubuntu@tegra-ubuntu:~$gcc -g -Wall -o coredump coredump.cpp -lstdc++

ubuntu@tegra-ubuntu:~$ ./coredump

Segmentation fault (core dumped)

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4). 查看core dumps 文件

利用GDB查看core dumps文件

 

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ubuntu@tegra-ubuntu:~$ gdb --core=/tmp/core-coredump-11-1000-1000-2072-1493286737

GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1

Copyright (C) 2014 Free SoftwareFoundation, Inc.

License GPLv3+: GNU GPL version 3 or later

This is free software: you are free tochange and redistribute it.

There is NO WARRANTY, to the extentpermitted by law.  Type "showcopying"

and "show warranty" for details.

This GDB was configured as "arm-linux-gnueabihf".

Type "show configuration" for configurationdetails.

For bug reporting instructi***, please see:

.

Find the GDB manual and other documentationresources online at:

.

For help, type "help".

Type "apropos word" to search forcommands related to "word".

[New LWP 2072]

Core was generated by `./coredump'.

Program terminated with signal SIGSEGV,Segmentation fault.

#0  0x000086*** in ?? ()

(gdb)

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5). 为正常运行程序创建core dump

除了为异常退出程序创建core dump方法，页可以使用gdb工具包里面的gcore功能为正常运行的程序创建core dump，基本语法如下，详细情况这里就不多做描述了。

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gcore-o /tmp/… xxx(process ID)

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