commit 596c1dc3e228795562975396bcd9672840aa3c82
author Owen Anderson <resistor@mac.com> Mon Aug 17 17:10:58 2009 +0000
committer Owen Anderson <resistor@mac.com> Mon Aug 17 17:10:58 2009 +0000
tree 692701e04592b28b54357e9135e770bd66d1e167
parent 6ae8c73acad76fdf9660ca88b5c07722eaf0a8e8

Add locking around the attributes list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79255 91177308-0d34-0410-b5e6-96231b3b80d8

lib/VMCore/Attributes.cpp

diff --git a/lib/VMCore/Attributes.cpp b/lib/VMCore/Attributes.cpp
index 5d763c3..91c7320 100644
--- a/lib/VMCore/Attributes.cpp
+++ b/lib/VMCore/Attributes.cpp
@@ -15,6 +15,7 @@
 #include "llvm/Type.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/FoldingSet.h"
+#include "llvm/System/Mutex.h"
 #include "llvm/Support/Streams.h"
 #include "llvm/Support/ManagedStatic.h"
 using namespace llvm;
@@ -124,9 +125,11 @@
 };
 }
 
+static ManagedStatic<sys::SmartMutex<true> > ALMutex;
 static ManagedStatic<FoldingSet<AttributeListImpl> > AttributesLists;
 
 AttributeListImpl::~AttributeListImpl() {
+  sys::SmartScopedLock<true> Lock(*ALMutex);
   AttributesLists->RemoveNode(this);
 }
 
@@ -149,6 +152,9 @@
   FoldingSetNodeID ID;
   AttributeListImpl::Profile(ID, Attrs, NumAttrs);
   void *InsertPos;
+  
+  sys::SmartScopedLock<true> Lock(*ALMutex);
+  
   AttributeListImpl *PAL =
     AttributesLists->FindNodeOrInsertPos(ID, InsertPos);