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//===-- CallPathManager.cpp -----------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CallPathManager.h"
#include "klee/Statistics.h"
#include <map>
#include <vector>
#if LLVM_VERSION_CODE >= LLVM_VERSION(3, 3)
#include "llvm/IR/Function.h"
#else
#include "llvm/Function.h"
#endif
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace klee;
///
CallPathNode::CallPathNode(CallPathNode *_parent,
Instruction *_callSite,
Function *_function)
: parent(_parent),
callSite(_callSite),
function(_function),
count(0) {
}
void CallPathNode::print() {
llvm::errs() << " (Function: " << this->function->getName() << ", "
<< "Callsite: " << callSite << ", "
<< "Count: " << this->count << ")";
if (parent && parent->callSite) {
llvm::errs() << ";\n";
parent->print();
}
else llvm::errs() << "\n";
}
///
CallPathManager::CallPathManager() : root(0, 0, 0) {
}
CallPathManager::~CallPathManager() {
for (std::vector<CallPathNode*>::iterator it = paths.begin(),
ie = paths.end(); it != ie; ++it)
delete *it;
}
void CallPathManager::getSummaryStatistics(CallSiteSummaryTable &results) {
results.clear();
for (std::vector<CallPathNode*>::iterator it = paths.begin(),
ie = paths.end(); it != ie; ++it)
(*it)->summaryStatistics = (*it)->statistics;
// compute summary bottom up, while building result table
for (std::vector<CallPathNode*>::reverse_iterator it = paths.rbegin(),
ie = paths.rend(); it != ie; ++it) {
CallPathNode *cp = *it;
cp->parent->summaryStatistics += cp->summaryStatistics;
CallSiteInfo &csi = results[cp->callSite][cp->function];
csi.count += cp->count;
csi.statistics += cp->summaryStatistics;
}
}
CallPathNode *CallPathManager::computeCallPath(CallPathNode *parent,
Instruction *cs,
Function *f) {
for (CallPathNode *p=parent; p; p=p->parent)
if (cs==p->callSite && f==p->function)
return p;
CallPathNode *cp = new CallPathNode(parent, cs, f);
paths.push_back(cp);
return cp;
}
CallPathNode *CallPathManager::getCallPath(CallPathNode *parent,
Instruction *cs,
Function *f) {
std::pair<Instruction*,Function*> key(cs, f);
if (!parent)
parent = &root;
CallPathNode::children_ty::iterator it = parent->children.find(key);
if (it==parent->children.end()) {
CallPathNode *cp = computeCallPath(parent, cs, f);
parent->children.insert(std::make_pair(key, cp));
return cp;
} else {
return it->second;
}
}
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