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Guard the layout info object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73928 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -23,6 +23,7 @@
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#include "llvm/Support/GetElementPtrTypeIterator.h"
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#include "llvm/Support/GetElementPtrTypeIterator.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/System/Mutex.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include <algorithm>
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#include <algorithm>
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@ -345,11 +346,13 @@ typedef DenseMap<LayoutKey, StructLayout*, DenseMapLayoutKeyInfo> LayoutInfoTy;
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}
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}
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static ManagedStatic<LayoutInfoTy> LayoutInfo;
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static ManagedStatic<LayoutInfoTy> LayoutInfo;
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static ManagedStatic<sys::SmartMutex<true> > LayoutLock;
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TargetData::~TargetData() {
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TargetData::~TargetData() {
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if (!LayoutInfo.isConstructed())
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if (!LayoutInfo.isConstructed())
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return;
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return;
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sys::SmartScopedLock<true> Lock(&*LayoutLock);
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// Remove any layouts for this TD.
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// Remove any layouts for this TD.
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LayoutInfoTy &TheMap = *LayoutInfo;
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LayoutInfoTy &TheMap = *LayoutInfo;
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for (LayoutInfoTy::iterator I = TheMap.begin(), E = TheMap.end(); I != E; ) {
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for (LayoutInfoTy::iterator I = TheMap.begin(), E = TheMap.end(); I != E; ) {
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@ -366,6 +369,7 @@ TargetData::~TargetData() {
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const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
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const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
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LayoutInfoTy &TheMap = *LayoutInfo;
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LayoutInfoTy &TheMap = *LayoutInfo;
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sys::SmartScopedLock<true> Lock(&*LayoutLock);
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StructLayout *&SL = TheMap[LayoutKey(this, Ty)];
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StructLayout *&SL = TheMap[LayoutKey(this, Ty)];
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if (SL) return SL;
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if (SL) return SL;
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@ -390,6 +394,7 @@ const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
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void TargetData::InvalidateStructLayoutInfo(const StructType *Ty) const {
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void TargetData::InvalidateStructLayoutInfo(const StructType *Ty) const {
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if (!LayoutInfo.isConstructed()) return; // No cache.
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if (!LayoutInfo.isConstructed()) return; // No cache.
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sys::SmartScopedLock<true> Lock(&*LayoutLock);
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LayoutInfoTy::iterator I = LayoutInfo->find(LayoutKey(this, Ty));
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LayoutInfoTy::iterator I = LayoutInfo->find(LayoutKey(this, Ty));
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if (I == LayoutInfo->end()) return;
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if (I == LayoutInfo->end()) return;
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