// Misc. API hooks.
//===----------------------------------------------------------------------===//
-static llvm::sys::Mutex EnableMultithreadingMutex;
-static bool EnabledMultithreading;
+static llvm::sys::Mutex LoggingMutex;
+static std::once_flag InstalledErrorHandlerFlag;
static void fatal_error_handler(void *user_data, const std::string& reason,
bool gen_crash_diag) {
if (!getenv("LIBCLANG_DISABLE_CRASH_RECOVERY"))
llvm::CrashRecoveryContext::Enable();
- // Enable support for multithreading in LLVM.
- {
- llvm::sys::ScopedLock L(EnableMultithreadingMutex);
- if (!EnabledMultithreading) {
- llvm::install_fatal_error_handler(fatal_error_handler, nullptr);
- llvm::llvm_start_multithreaded();
- EnabledMultithreading = true;
- }
- }
+ std::call_once(InstalledErrorHandlerFlag,
+ []() {llvm::install_fatal_error_handler(fatal_error_handler, nullptr);});
CIndexer *CIdxr = new CIndexer();
if (excludeDeclarationsFromPCH)
cxindex::Logger::~Logger() {
LogOS.flush();
- llvm::sys::ScopedLock L(EnableMultithreadingMutex);
+ llvm::sys::ScopedLock L(LoggingMutex);
static llvm::TimeRecord sBeginTR = llvm::TimeRecord::getCurrentTime();