73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
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#include "leak_detector.h"
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#include "LoopChecker.h"
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using namespace std;
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void LoopChecker::updateLoopGraph(const map<string, FuncInfo*> &allFuncs)
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{
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for (auto &loopNode : loopGraph)
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updateLoopNode(loopNode, allFuncs);
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}
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LoopCheckResults LoopChecker::updateLoopNode(LoopGraph *loop, const map<string, FuncInfo*> &allFuncs)
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{
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LoopCheckResults loopChecks = checkLoopForPurenessAndIO(loop, allFuncs);
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bool hasImpureCalls = loopChecks.hasImpureCalls;
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bool usesIO = loopChecks.usesIO;
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if (loopChecks.linesOfIO.size() && usesIO)
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for (auto& elem : loopChecks.linesOfIO)
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loop->linesOfIO.insert(elem);
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for (auto &nestedLoop : loop->children)
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{
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loopChecks = updateLoopNode(nestedLoop, allFuncs);
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hasImpureCalls |= loopChecks.hasImpureCalls;
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usesIO |= loopChecks.usesIO;
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}
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loop->hasNonPureProcedures |= hasImpureCalls;
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loop->hasPrints |= usesIO;
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return LoopCheckResults(loop->hasPrints, loop->hasNonPureProcedures);
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}
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// checks loop node itself, doesn't check its children
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LoopCheckResults LoopChecker::checkLoopForPurenessAndIO(const LoopGraph *loopNode, const map<string, FuncInfo*> &allFuncs) const
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{
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LoopCheckResults loopCheckResults;
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for (auto &nameAndLineOfFuncCalled : loopNode->calls)
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{
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FuncInfo *calledFuncInfo = NULL;
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auto it = allFuncs.find(nameAndLineOfFuncCalled.first);
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if (it != allFuncs.end())
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calledFuncInfo = it->second;
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if (!calledFuncInfo)
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{
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if (isIntrinsicFunctionName(nameAndLineOfFuncCalled.first.c_str()))
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continue;
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else
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{ // if funcInfo was not found assume func to be impure
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loopCheckResults.hasImpureCalls = true;
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loopCheckResults.usesIO = true;
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loopCheckResults.linesOfIO.push_back(nameAndLineOfFuncCalled.second);
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}
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continue;
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}
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if (!calledFuncInfo->isPure)
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loopCheckResults.hasImpureCalls = true;
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if (calledFuncInfo->usesIO())
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{
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loopCheckResults.usesIO = true;
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loopCheckResults.linesOfIO.push_back(nameAndLineOfFuncCalled.second);
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}
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}
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return loopCheckResults;
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}
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