Profiling Windows NT Services
ID: Q117681
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The information in this article applies to:
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Microsoft Source Profiler for Windows NT, versions 1.0, 1.1
The information in this article is included in the documentation starting
with Visual C++ 5.0. Look there for future revisions.
SUMMARY
This article provides information about profiling Windows NT service
processes. This information is not available in Microsoft Source Profiler
documentation.
MORE INFORMATION
Use the service sample from the directory MSVCNT\SAMPLES\SERVICE, and
follow these steps to get timing information for its service functions:
- Set necessary environment variables using the System control panel
applet. You will find system environment variables like ComSpec, windir,
and Path.
- Add two new environment variables:
__ProfilePBI=<full path of your PBI file>
__ProfilePBO=<full path of your PBO file>
Note the exact spelling and two leading underscores. If these are not
correctly set, you will get messages from PROFILE.DLL warning you that
these settings cannot be found.
In this example, if your compiler is on your D drive, these variables
would be:
d:\msvcnt\samples\service\simple.pbi
d:\msvcnt\samples\service\simple.pbi
- Copy the profiler, DLL PROFILE.DLL, from the MSVCNT\BIN subdirectory to
either the directory where the service .EXE resides or to one of the
directories listed in the PATH environment variable.
- Build the sample, SIMPLE.EXE. Instruct the linker to create a .MAP file.
- Run PREP to create SIMPLE._XE, which has been modified for profiling:
prep /om /ft /sf _worker_thread simple.exe
This command also sets up the code to follow the call stack from the
worker_thread() routine. By default, the profiler profiles calls from
the main thread, so servicing requests from a secondary thread without
specifying the /sf option will produce incomplete results. In the
sample, this second thread is created by calling CreateThread() to
service the requests. If the main thread was servicing the requests,
then you wouldn't need to use the /sf option.
- Copy SIMPLE._XE to SIMPLE.EXE. This overwrites the original executable
file with the modified version that has the profile hooks added to the
code.
- Start the service by using the Control Panel Services applet and run the
client application. Stop the service using the Control Panel. You can
get the timing information by executing:
prep /m simple
plist simple
Additional query words:
1.00 1.10
Keywords : TlsMisc
Version : :1.0,1.1
Platform : NT WINDOWS
Issue type :
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