1//===-- LeakDetector.cpp - Implement LeakDetector interface ---------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file implements the LeakDetector class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "LLVMContextImpl.h" 15#include "llvm/Support/LeakDetector.h" 16#include "llvm/ADT/SmallPtrSet.h" 17#include "llvm/Support/Compiler.h" 18#include "llvm/Support/ManagedStatic.h" 19#include "llvm/Support/Mutex.h" 20#include "llvm/Support/Threading.h" 21#include "llvm/Value.h" 22using namespace llvm; 23 24static ManagedStatic<sys::SmartMutex<true> > ObjectsLock; 25static ManagedStatic<LeakDetectorImpl<void> > Objects; 26 27static void clearGarbage(LLVMContext &Context) { 28 Objects->clear(); 29 Context.pImpl->LLVMObjects.clear(); 30} 31 32void LeakDetector::addGarbageObjectImpl(void *Object) { 33 sys::SmartScopedLock<true> Lock(*ObjectsLock); 34 Objects->addGarbage(Object); 35} 36 37void LeakDetector::addGarbageObjectImpl(const Value *Object) { 38 LLVMContextImpl *pImpl = Object->getContext().pImpl; 39 pImpl->LLVMObjects.addGarbage(Object); 40} 41 42void LeakDetector::removeGarbageObjectImpl(void *Object) { 43 sys::SmartScopedLock<true> Lock(*ObjectsLock); 44 Objects->removeGarbage(Object); 45} 46 47void LeakDetector::removeGarbageObjectImpl(const Value *Object) { 48 LLVMContextImpl *pImpl = Object->getContext().pImpl; 49 pImpl->LLVMObjects.removeGarbage(Object); 50} 51 52void LeakDetector::checkForGarbageImpl(LLVMContext &Context, 53 const std::string &Message) { 54 LLVMContextImpl *pImpl = Context.pImpl; 55 sys::SmartScopedLock<true> Lock(*ObjectsLock); 56 57 Objects->setName("GENERIC"); 58 pImpl->LLVMObjects.setName("LLVM"); 59 60 // use non-short-circuit version so that both checks are performed 61 if (Objects->hasGarbage(Message) | 62 pImpl->LLVMObjects.hasGarbage(Message)) 63 errs() << "\nThis is probably because you removed an object, but didn't " 64 << "delete it. Please check your code for memory leaks.\n"; 65 66 // Clear out results so we don't get duplicate warnings on 67 // next call... 68 clearGarbage(Context); 69} 70