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