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AttrListPtr operations need to be atomic.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79486 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2009-08-19 22:58:34 +00:00
parent 3d01334e6f
commit 517d811f6b
1 changed files with 4 additions and 0 deletions
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4
lib/VMCore/Attributes.cpp
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@ -175,14 +175,17 @@ AttrListPtr AttrListPtr::get(const AttributeWithIndex *Attrs, unsigned NumAttrs)
//===----------------------------------------------------------------------===//
AttrListPtr::AttrListPtr(AttributeListImpl *LI) : AttrList(LI) {
sys::SmartScopedLock<true> Lock(*ALMutex);
if (LI) LI->AddRef();
}
AttrListPtr::AttrListPtr(const AttrListPtr &P) : AttrList(P.AttrList) {
sys::SmartScopedLock<true> Lock(*ALMutex);
if (AttrList) AttrList->AddRef();
}
const AttrListPtr &AttrListPtr::operator=(const AttrListPtr &RHS) {
sys::SmartScopedLock<true> Lock(*ALMutex);
if (AttrList == RHS.AttrList) return *this;
if (AttrList) AttrList->DropRef();
AttrList = RHS.AttrList;
@ -191,6 +194,7 @@ const AttrListPtr &AttrListPtr::operator=(const AttrListPtr &RHS) {
}
AttrListPtr::~AttrListPtr() {
sys::SmartScopedLock<true> Lock(*ALMutex);
if (AttrList) AttrList->DropRef();
}