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Diffstat (limited to 'lib/scudo/scudo_tsd_shared.inc')
-rw-r--r-- | lib/scudo/scudo_tsd_shared.inc | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/scudo/scudo_tsd_shared.inc b/lib/scudo/scudo_tsd_shared.inc new file mode 100644 index 000000000000..79fcd651ed2d --- /dev/null +++ b/lib/scudo/scudo_tsd_shared.inc @@ -0,0 +1,48 @@ +//===-- scudo_tsd_shared.inc ------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +/// +/// Scudo shared TSD fastpath functions implementation. +/// +//===----------------------------------------------------------------------===// + +#ifndef SCUDO_TSD_H_ +# error "This file must be included inside scudo_tsd.h." +#endif // SCUDO_TSD_H_ + +#if !SCUDO_TSD_EXCLUSIVE + +extern pthread_key_t PThreadKey; + +ALWAYS_INLINE ScudoTSD* getCurrentTSD() { +#if SANITIZER_ANDROID + return reinterpret_cast<ScudoTSD *>(*get_android_tls_ptr()); +#else + return reinterpret_cast<ScudoTSD *>(pthread_getspecific(PThreadKey)); +#endif // SANITIZER_ANDROID +} + +ALWAYS_INLINE void initThreadMaybe(bool MinimalInit = false) { + if (LIKELY(getCurrentTSD())) + return; + initThread(MinimalInit); +} + +ScudoTSD *getTSDAndLockSlow(); + +ALWAYS_INLINE ScudoTSD *getTSDAndLock() { + ScudoTSD *TSD = getCurrentTSD(); + CHECK(TSD && "No TSD associated with the current thread!"); + // Try to lock the currently associated context. + if (TSD->tryLock()) + return TSD; + // If it failed, go the slow path. + return getTSDAndLockSlow(); +} + +#endif // !SCUDO_TSD_EXCLUSIVE |