Core Analysis Fundamentals

Agenda

Basic knowledge about core
Practical examples

What is core

Core is a file created by the operating system when a program terminates unexpectedly, due to a bug, or a violation of the operating system's or hardware's protection mechanisms. The operating system kills the program and creates a core file that programmers can use to figure out what went wrong. It contains a detailed description of the state that the program was in when it died. Core, core file, core dump are the same thing.

OS configuration

Linux
- Check whether core generation is enabled: ulimit -c
- Enable core generation: ulimit -c unlimited
Windows
- Install tool 'DebugDiag'

Play with the core

int main()
{
    int lIntegers[100000000];
    int lInteger = 0;
    int *lpInteger = 0;
    *lpInteger = lInteger;
}

Generate core with the code below

Load the core to check what is wrong

More practical examples

Server services
- Synchronized
  - 3-tier command
  - Most XLM command
  - Most REST command
- A-synchronized
  - Job

Core Analysis Fundamentals

Agenda

What is core

OS configuration

Play with the core

More practical examples

Thank You!

Core Analysis Fundamentals

Core Analysis Fundamentals

bawu

Core Analysis Fundamentals

Agenda

What is core

OS configuration

Play with the core

More practical examples

Thank You!

Core Analysis Fundamentals

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