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cwindowsprofilingluke

Luke Stackwalker returns error when running, gprof works fine


I'm used to gprof for profiling my C code, but I want to start using a GUI-based Windows application such as Luke Stackwalker. gprof works perfectly fine on my binary, but Luke Stackwalker has some issues:

Launching executable C:\lshare\POT03\Eclipse\Debug\POTaak3.exe.
SymInit: Symbol-SearchPath: ';.;C:\Program Files\Luke Stackwalker;C:\Program Files\Luke Stackwalker;C:\WINDOWS;C:\WINDOWS\system32;SRV*C:\websymbols*http://msdl.microsoft.com/download/symbols;', symOptions: 530, UserName: 'Pieter'

OS-Version: 5.1.2600 (Service Pack 3) 0x100-0x1

C:\lshare\POT03\Eclipse\Debug\POTaak3.exe:POTaak3.exe (00400000), size: 61440, SymType: '-unknown-', PDB: '$Tƒ|'
C:\WINDOWS\system32\ntdll.dll:ntdll.dll (7C900000), size: 753664, SymType: '-unknown-', PDB: '©Uƒ|'
C:\WINDOWS\system32\kernel32.dll:kernel32.dll (7C7D0000), size: 1048576, SymType: '-unknown-', PDB: '©Uƒ|'
C:\WINDOWS\system32\msvcrt.dll:msvcrt.dll (77BE0000), size: 360448, SymType: '-unknown-', PDB: '©Uƒ|'
ERROR: SymGetModuleInfo64, GetLastError: 1114 (Address: 7C90E514)
Sorting profile data.
Done; 2 samples collected at 1.$ samples/second.

Who shot the who in the what now? What am I doing wrong here? I did remember to use the -pg flag.


Solution

  • I understand why you want something other than gprof. Luke Stackwalker takes stack samples, but (last time I checked) it doesn't summarize inclusive % of wall-clock time used at the level of lines of code. On Linux, you could use lsstack or pstack, and there must be a similar tool on Windows. In your situation, I just rely on the pause button in the IDE to take stackshots.