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Don't leak the mutex when loading dynamic libraries.

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llvm-svn: 121119
This commit is contained in:
Owen Anderson 2010-12-07 07:56:20 +00:00
parent 0413f5e1cb
commit 4ad5307d6a
1 changed files with 5 additions and 12 deletions
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17
lib/Support/DynamicLibrary.cpp
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@ -61,17 +61,12 @@ using namespace llvm::sys;
//=== independent code.
//===----------------------------------------------------------------------===//
static SmartMutex<true>* HandlesMutex;
static std::vector<void *> *OpenedHandles = 0;
static bool InitializeMutex() {
HandlesMutex = new SmartMutex<true>;
return HandlesMutex != 0;
}
static bool EnsureMutexInitialized() {
static bool result = InitializeMutex();
return result;
static SmartMutex<true>& getMutex() {
static SmartMutex<true> HandlesMutex;
return HandlesMutex;
}
@ -88,8 +83,7 @@ bool DynamicLibrary::LoadLibraryPermanently(const char *Filename,
if (Filename == NULL)
H = RTLD_DEFAULT;
#endif
EnsureMutexInitialized();
SmartScopedLock<true> Lock(*HandlesMutex);
SmartScopedLock<true> Lock(getMutex());
if (OpenedHandles == 0)
OpenedHandles = new std::vector<void *>();
OpenedHandles->push_back(H);
@ -124,8 +118,7 @@ void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
#if HAVE_DLFCN_H
// Now search the libraries.
EnsureMutexInitialized();
SmartScopedLock<true> Lock(*HandlesMutex);
SmartScopedLock<true> Lock(getMutex());
if (OpenedHandles) {
for (std::vector<void *>::iterator I = OpenedHandles->begin(),
E = OpenedHandles->end(); I != E; ++I) {