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Guard the listeners list. Unfortunately, this requires a real static rather

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than a managed static because other managed statics can (and do) access this
list in their destructors.  Yes, I know it's horrible.

llvm-svn: 74029
This commit is contained in:
Owen Anderson 2009-06-24 00:25:42 +00:00
parent 7bd642b80c
commit 446169df49
1 changed files with 5 additions and 0 deletions
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5
lib/VMCore/Pass.cpp
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@ -20,6 +20,7 @@
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/System/Atomic.h"
#include "llvm/System/Mutex.h"
#include "llvm/System/Threading.h"
#include <algorithm>
#include <map>
@ -187,6 +188,7 @@ public:
}
static std::vector<PassRegistrationListener*> *Listeners = 0;
static sys::SmartMutex<true> ListenersLock;
// FIXME: This should use ManagedStatic to manage the pass registrar.
// Unfortunately, we can't do this, because passes are registered with static
@ -231,6 +233,7 @@ void PassInfo::registerPass() {
getPassRegistrar()->RegisterPass(*this);
// Notify any listeners.
sys::SmartScopedLock<true> Lock(&ListenersLock);
if (Listeners)
for (std::vector<PassRegistrationListener*>::iterator
I = Listeners->begin(), E = Listeners->end(); I != E; ++I)
@ -283,12 +286,14 @@ RegisterAGBase::RegisterAGBase(const char *Name, intptr_t InterfaceID,
// PassRegistrationListener ctor - Add the current object to the list of
// PassRegistrationListeners...
PassRegistrationListener::PassRegistrationListener() {
sys::SmartScopedLock<true> Lock(&ListenersLock);
if (!Listeners) Listeners = new std::vector<PassRegistrationListener*>();
Listeners->push_back(this);
}
// dtor - Remove object from list of listeners...
PassRegistrationListener::~PassRegistrationListener() {
sys::SmartScopedLock<true> Lock(&ListenersLock);
std::vector<PassRegistrationListener*>::iterator I =
std::find(Listeners->begin(), Listeners->end(), this);
assert(Listeners && I != Listeners->end() &&