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42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
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In order to debug with callgrind, you need to add a couple of code
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fragments around the section of code you are profiling. This is
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easiest if you can find the function that invokes the routine(s) you
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want to profile, add the following code around the function call of
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interest.
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Add the following to the start of the file:
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#include <valgrind/callgrind.h>
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Add the following to the start of the calling function:
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static GTimeVal start, end;
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Add the following just before the function of interest:
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g_print("Start timing.\n");
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g_get_current_time(&start);
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CALLGRIND_START_INSTRUMENTATION();
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CALLGRIND_TOGGLE_COLLECT();
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Add the following just after the function of interest:
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CALLGRIND_TOGGLE_COLLECT();
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CALLGRIND_STOP_INSTRUMENTATION();
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g_get_current_time(&end);
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if (start.tv_usec > end.tv_usec) {
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end.tv_usec += 1000000;
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end.tv_sec -= 1;
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}
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g_print("Callgrind enabled for %d.%6d seconds.\n",
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(int)(end.tv_sec - start.tv_sec),
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(int)(end.tv_usec - start.tv_usec));
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You will need to recompile, and then run the 'gnucash-valgrind'
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wrapper script instead of the normal 'gnucash' script.
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NOTE: Version 3.2 of valgrind has changed the above macros to no
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longer take an argument. In order to compile with this version of
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valgrind you will need to remove the trailing parentheses and
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semicolon.
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