debugging functions and capabilities in system software

#Debugging functions and capabilities in system software install
#Debugging functions and capabilities in system software serial

In this case what you can do is use a debugger such as Softice to set a breakpoint in the program on a Windows API call which you can guess will be used in the program. Unfortunately sometimes string references cannot be found in the program as they are not hard coded in and are instead accessed through another file, or other methods. Note that this technique is most useful when programs exploit finer granularities of parallelism.ĭebugging.

If there are a large number of parallel blocks in the program, half of them can be turned off and the user can proceed in a kind of binary search until the problem block is found. This can be done by selectively deparalleliz- ing each block until the program begins to execute correctly.

#Debugging functions and capabilities in system software serial

If all three execute incorrectly, the bug has nothing to do with parallelism and the standard tools for debugging serial programs can be used.In the first two cases, where the bug is somehow related to parallelism, the preprocessor can be used to pin- point the specific block that is responsible for the anomalous behavior. If A executes correctly, but B and C do not, the problem is linked to parallelism but its exact nature is not yet clear. If A and B execute correctly, but C does not, the likely culprit is a renegade private variable that should have been copied in.

/var/log/univention/ management- console- module-appcenter.logĭebugging. A simple debugging strategy is to compile the program into three executables by using the different options let A be the result of serial mode, B the result of noprespawn mode, and C the result of prespawn mode.

To view the Docker log files for the app, please use the following command: $ univention-app logs Lappid # equivalent to docker logs $CONTAINER For multi container apps using Docker compose, those logging information can be viewed with: $ cd /var/ lib/univention-appcenter/apps/Lappid/compose$ docker-compose -p 'Lappid' logsImportant log files on the UCS host for debugging are: $ CONTAINER='$(ucr get appcenter/ apps/myapp/container)'$ docker exec 'LCONTAINER'. $ univention-app shell myappIf the container does not support a shell, the container can be entered with the plain Docker commands.

The following command opens a shell in the container.

#Debugging functions and capabilities in system software install

$ univention-app install myapp -do-not-revertFor debugging or support cases it can be helpful to enter the app container. With the following command the App Center will not throw away a failed app installation. If an app installation fails, the App Center removes the Docker container and thus prevents the developer to have a deeper look into what happened. Debugging. During app development or for problem analysis it may be necessary to debug an app.