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43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
/*===-- FunctionProfiling.c - Support library for function profiling ------===*\
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|*
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|* The LLVM Compiler Infrastructure
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|*
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|* This file was developed by the LLVM research group and is distributed under
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|* the University of Illinois Open Source License. See LICENSE.TXT for details.
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|*
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|*===----------------------------------------------------------------------===*|
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|*
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|* This file implements the call back routines for the function profiling
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|* instrumentation pass. This should be used with the
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|* -insert-function-profiling LLVM pass.
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|*
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\*===----------------------------------------------------------------------===*/
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#include "Profiling.h"
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#include <stdlib.h>
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static unsigned *ArrayStart;
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static unsigned NumElements;
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/* FuncProfAtExitHandler - When the program exits, just write out the profiling
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* data.
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*/
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static void FuncProfAtExitHandler() {
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/* Just write out the data we collected.
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*/
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write_profiling_data(FunctionInfo, ArrayStart, NumElements);
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}
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/* llvm_start_func_profiling - This is the main entry point of the function
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* profiling library. It is responsible for setting up the atexit handler.
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*/
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int llvm_start_func_profiling(int argc, const char **argv,
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unsigned *arrayStart, unsigned numElements) {
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int Ret = save_arguments(argc, argv);
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ArrayStart = arrayStart;
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NumElements = numElements;
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atexit(FuncProfAtExitHandler);
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return Ret;
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}
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