80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
|
//===-- FunctionBlackList.cpp - blacklist of functions --------------------===//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is distributed under the University of Illinois Open Source
|
||
|
|
// License. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This is a utility class for instrumentation passes (like AddressSanitizer
|
||
|
|
// or ThreadSanitizer) to avoid instrumenting some functions based on
|
||
|
|
// user-supplied blacklist.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "FunctionBlackList.h"
|
||
|
|
#include "llvm/ADT/OwningPtr.h"
|
||
|
|
#include "llvm/ADT/SmallVector.h"
|
||
|
|
#include "llvm/ADT/StringExtras.h"
|
||
|
|
#include "llvm/Function.h"
|
||
|
|
#include "llvm/Support/MemoryBuffer.h"
|
||
|
|
#include "llvm/Support/Regex.h"
|
||
|
|
#include "llvm/Support/raw_ostream.h"
|
||
|
|
#include "llvm/Support/system_error.h"
|
||
|
|
|
||
|
|
namespace llvm {
|
||
|
|
|
||
|
|
FunctionBlackList::FunctionBlackList(const std::string &Path) {
|
||
|
|
Functions = NULL;
|
||
|
|
const char *kFunPrefix = "fun:";
|
||
|
|
if (!Path.size()) return;
|
||
|
|
std::string Fun;
|
||
|
|
|
||
|
|
OwningPtr<MemoryBuffer> File;
|
||
|
|
if (error_code EC = MemoryBuffer::getFile(Path.c_str(), File)) {
|
||
|
|
report_fatal_error("Can't open blacklist file " + Path + ": " +
|
||
|
|
EC.message());
|
||
|
|
}
|
||
|
|
MemoryBuffer *Buff = File.take();
|
||
|
|
const char *Data = Buff->getBufferStart();
|
||
|
|
size_t DataLen = Buff->getBufferSize();
|
||
|
|
SmallVector<StringRef, 16> Lines;
|
||
|
|
SplitString(StringRef(Data, DataLen), Lines, "\n\r");
|
||
|
|
for (size_t i = 0, numLines = Lines.size(); i < numLines; i++) {
|
||
|
|
if (Lines[i].startswith(kFunPrefix)) {
|
||
|
|
std::string ThisFunc = Lines[i].substr(strlen(kFunPrefix));
|
||
|
|
std::string ThisFuncRE;
|
||
|
|
// add ThisFunc replacing * with .*
|
||
|
|
for (size_t j = 0, n = ThisFunc.size(); j < n; j++) {
|
||
|
|
if (ThisFunc[j] == '*')
|
||
|
|
ThisFuncRE += '.';
|
||
|
|
ThisFuncRE += ThisFunc[j];
|
||
|
|
}
|
||
|
|
// Check that the regexp is valid.
|
||
|
|
Regex CheckRE(ThisFuncRE);
|
||
|
|
std::string Error;
|
||
|
|
if (!CheckRE.isValid(Error))
|
||
|
|
report_fatal_error("malformed blacklist regex: " + ThisFunc +
|
||
|
|
": " + Error);
|
||
|
|
// Append to the final regexp.
|
||
|
|
if (Fun.size())
|
||
|
|
Fun += "|";
|
||
|
|
Fun += ThisFuncRE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (Fun.size()) {
|
||
|
|
Functions = new Regex(Fun);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool FunctionBlackList::isIn(const Function &F) {
|
||
|
|
if (Functions) {
|
||
|
|
bool Res = Functions->match(F.getName());
|
||
|
|
return Res;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace llvm
|