diff options
Diffstat (limited to 'gnu/llvm/compiler-rt/lib/scudo/scudo_tsd_exclusive.cpp')
-rw-r--r-- | gnu/llvm/compiler-rt/lib/scudo/scudo_tsd_exclusive.cpp | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/gnu/llvm/compiler-rt/lib/scudo/scudo_tsd_exclusive.cpp b/gnu/llvm/compiler-rt/lib/scudo/scudo_tsd_exclusive.cpp deleted file mode 100644 index a203a74bbcf..00000000000 --- a/gnu/llvm/compiler-rt/lib/scudo/scudo_tsd_exclusive.cpp +++ /dev/null @@ -1,67 +0,0 @@ -//===-- scudo_tsd_exclusive.cpp ---------------------------------*- C++ -*-===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -/// -/// Scudo exclusive TSD implementation. -/// -//===----------------------------------------------------------------------===// - -#include "scudo_tsd.h" - -#if SCUDO_TSD_EXCLUSIVE - -namespace __scudo { - -static pthread_once_t GlobalInitialized = PTHREAD_ONCE_INIT; -static pthread_key_t PThreadKey; - -__attribute__((tls_model("initial-exec"))) -THREADLOCAL ThreadState ScudoThreadState = ThreadNotInitialized; -__attribute__((tls_model("initial-exec"))) -THREADLOCAL ScudoTSD TSD; - -// Fallback TSD for when the thread isn't initialized yet or is torn down. It -// can be shared between multiple threads and as such must be locked. -ScudoTSD FallbackTSD; - -static void teardownThread(void *Ptr) { - uptr I = reinterpret_cast<uptr>(Ptr); - // The glibc POSIX thread-local-storage deallocation routine calls user - // provided destructors in a loop of PTHREAD_DESTRUCTOR_ITERATIONS. - // We want to be called last since other destructors might call free and the - // like, so we wait until PTHREAD_DESTRUCTOR_ITERATIONS before draining the - // quarantine and swallowing the cache. - if (I > 1) { - // If pthread_setspecific fails, we will go ahead with the teardown. - if (LIKELY(pthread_setspecific(PThreadKey, - reinterpret_cast<void *>(I - 1)) == 0)) - return; - } - TSD.commitBack(); - ScudoThreadState = ThreadTornDown; -} - - -static void initOnce() { - CHECK_EQ(pthread_key_create(&PThreadKey, teardownThread), 0); - initScudo(); - FallbackTSD.init(); -} - -void initThread(bool MinimalInit) { - CHECK_EQ(pthread_once(&GlobalInitialized, initOnce), 0); - if (UNLIKELY(MinimalInit)) - return; - CHECK_EQ(pthread_setspecific(PThreadKey, reinterpret_cast<void *>( - GetPthreadDestructorIterations())), 0); - TSD.init(); - ScudoThreadState = ThreadInitialized; -} - -} // namespace __scudo - -#endif // SCUDO_TSD_EXCLUSIVE |