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Make PassRegistrar thread-safe since it can be modified by code running in

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separate LLVMContexts.

llvm-svn: 96051
This commit is contained in:
Jeffrey Yasskin 2010-02-13 00:03:17 +00:00
parent 1d25e3978d
commit 963eee9ee1
1 changed files with 9 additions and 0 deletions
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9
lib/VMCore/Pass.cpp
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@ -194,6 +194,9 @@ PassManagerType BasicBlockPass::getPotentialPassManagerType() const {
//
namespace {
class PassRegistrar {
/// Guards the contents of this class.
mutable sys::SmartMutex<true> Lock;
/// PassInfoMap - Keep track of the passinfo object for each registered llvm
/// pass.
typedef std::map<intptr_t, const PassInfo*> MapType;
@ -213,16 +216,19 @@ class PassRegistrar {
public:
const PassInfo *GetPassInfo(intptr_t TI) const {
sys::SmartScopedLock<true> Guard(Lock);
MapType::const_iterator I = PassInfoMap.find(TI);
return I != PassInfoMap.end() ? I->second : 0;
}
const PassInfo *GetPassInfo(StringRef Arg) const {
sys::SmartScopedLock<true> Guard(Lock);
StringMapType::const_iterator I = PassInfoStringMap.find(Arg);
return I != PassInfoStringMap.end() ? I->second : 0;
}
void RegisterPass(const PassInfo &PI) {
sys::SmartScopedLock<true> Guard(Lock);
bool Inserted =
PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
assert(Inserted && "Pass registered multiple times!"); Inserted=Inserted;
@ -230,6 +236,7 @@ public:
}
void UnregisterPass(const PassInfo &PI) {
sys::SmartScopedLock<true> Guard(Lock);
MapType::iterator I = PassInfoMap.find(PI.getTypeInfo());
assert(I != PassInfoMap.end() && "Pass registered but not in map!");
@ -239,6 +246,7 @@ public:
}
void EnumerateWith(PassRegistrationListener *L) {
sys::SmartScopedLock<true> Guard(Lock);
for (MapType::const_iterator I = PassInfoMap.begin(),
E = PassInfoMap.end(); I != E; ++I)
L->passEnumerate(I->second);
@ -249,6 +257,7 @@ public:
void RegisterAnalysisGroup(PassInfo *InterfaceInfo,
const PassInfo *ImplementationInfo,
bool isDefault) {
sys::SmartScopedLock<true> Guard(Lock);
AnalysisGroupInfo &AGI = AnalysisGroupInfoMap[InterfaceInfo];
assert(AGI.Implementations.count(ImplementationInfo) == 0 &&
"Cannot add a pass to the same analysis group more than once!");