System Analyzer: Execution Graph features : do I need target instrumentation code for generation UIA function entry/exit events ?

Alois,

Just some info …

You’re probably aware that there are two type of analysis/events supported by System Analyzer … benchmarking which is stop time – start time and context aware profile.

Key differences between benchmark/duration and context profile:

• Context profile calculates inclusive and exclusive benchmarking
• If context information is being logged (either by turning SYSBIOS context switch or explicitly logging via an OS hook function) then context will be taken into consideration. If no context then it will assume all in the same context
• Inclusive benchmarking = stoptime – starttime - anytime spent in any other context
• Exclusive benchmaking = inclusive benchmarking – any time spent in any other function during this time

Btw, it wasn’t clear if you wanted me to dig up info on using the hook functions or if you’re ok with inserting individual instrumentation.

Regards,

Imtaz.

Alois,

Sorry for the slow response. Here is the content from the compiler help regarding this. Basically you define an function to log the UIA function start event and one for exit then use the compiler to hook these in automatically to every function. We are in the process of creating an example on how to do this and will post additional info when available.

 Regards,

Imtaz.

Enabling Entry Hook and Exit Hook Functions

An entry hook is a routine that is called upon entry to each function in the program. An exit hook is a routine that is called upon exit of each function. Applications for hooks include debugging, trace, profiling, and stack overflow checking.

Entry and exit hooks are enabled using the following options:

Enables entry hooks. If specified, the hook function is called name. Otherwise, the default entry hook function name is __entry_hook.

--entry_parm{=Name|address|none} :

Specify the parameters to the hook function. The name parameter specifies address|none} that the name of the calling function is passed to the hook function as an argument. In this case the signature for the hook function is: void hook(const char *name); The address parameter specifies that the address of the calling function is passed to the hook function. In this case the signature for the hook function is: void hook(void (*addr)()); The none parameter specifies that the hook is called with no parameters. This is the default. In this case the signature for the hook function is: void hook(void);