1 files changed, 0 insertions, 95 deletions
diff --git a/lib/scudo/scudo_tls_android.cpp b/lib/scudo/scudo_tls_android.cpp
deleted file mode 100644
index ec74e37c8dbc0..0000000000000
--- a/lib/scudo/scudo_tls_android.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-//===-- scudo_tls_android.cpp -----------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// Scudo thread local structure implementation for Android.
-///
-//===----------------------------------------------------------------------===//
-
-#include "sanitizer_common/sanitizer_platform.h"
-
-#if SANITIZER_LINUX && SANITIZER_ANDROID
-
-#include "scudo_tls.h"
-
-#include <pthread.h>
-
-namespace __scudo {
-
-static pthread_once_t GlobalInitialized = PTHREAD_ONCE_INIT;
-static pthread_key_t PThreadKey;
-
-static atomic_uint32_t ThreadContextCurrentIndex;
-static ScudoThreadContext *ThreadContexts;
-static uptr NumberOfContexts;
-
-// sysconf(_SC_NPROCESSORS_{CONF,ONLN}) cannot be used as they allocate memory.
-static uptr getNumberOfCPUs() {
-  cpu_set_t CPUs;
-  CHECK_EQ(sched_getaffinity(0, sizeof(cpu_set_t), &CPUs), 0);
-  return CPU_COUNT(&CPUs);
-}
-
-static void initOnce() {
-  // Hack: TLS_SLOT_TSAN was introduced in N. To be able to use it on M for
-  // testing, we create an unused key. Since the key_data array follows the tls
-  // array, it basically gives us the extra entry we need.
-  // TODO(kostyak): remove and restrict to N and above.
-  CHECK_EQ(pthread_key_create(&PThreadKey, NULL), 0);
-  initScudo();
-  NumberOfContexts = getNumberOfCPUs();
-  ThreadContexts = reinterpret_cast<ScudoThreadContext *>(
-      MmapOrDie(sizeof(ScudoThreadContext) * NumberOfContexts, __func__));
-  for (uptr i = 0; i < NumberOfContexts; i++)
-    ThreadContexts[i].init();
-}
-
-void initThread() {
-  pthread_once(&GlobalInitialized, initOnce);
-  // Initial context assignment is done in a plain round-robin fashion.
-  u32 Index = atomic_fetch_add(&ThreadContextCurrentIndex, 1,
-                               memory_order_relaxed);
-  ScudoThreadContext *ThreadContext =
-      &ThreadContexts[Index % NumberOfContexts];
-  *get_android_tls_ptr() = reinterpret_cast<uptr>(ThreadContext);
-}
-
-ScudoThreadContext *getThreadContextAndLockSlow() {
-  ScudoThreadContext *ThreadContext;
-  // Go through all the contexts and find the first unlocked one. 
-  for (u32 i = 0; i < NumberOfContexts; i++) {
-    ThreadContext = &ThreadContexts[i];
-    if (ThreadContext->tryLock()) {
-      *get_android_tls_ptr() = reinterpret_cast<uptr>(ThreadContext);
-      return ThreadContext;
-    }
-  }
-  // No luck, find the one with the lowest precedence, and slow lock it.
-  u64 Precedence = UINT64_MAX;
-  for (u32 i = 0; i < NumberOfContexts; i++) {
-    u64 SlowLockPrecedence = ThreadContexts[i].getSlowLockPrecedence();
-    if (SlowLockPrecedence && SlowLockPrecedence < Precedence) {
-      ThreadContext = &ThreadContexts[i];
-      Precedence = SlowLockPrecedence;
-    }
-  }
-  if (LIKELY(Precedence != UINT64_MAX)) {
-    ThreadContext->lock();
-    *get_android_tls_ptr() = reinterpret_cast<uptr>(ThreadContext);
-    return ThreadContext;
-  }
-  // Last resort (can this happen?), stick with the current one.
-  ThreadContext =
-      reinterpret_cast<ScudoThreadContext *>(*get_android_tls_ptr());
-  ThreadContext->lock();
-  return ThreadContext;
-}
-
-}  // namespace __scudo
-
-#endif  // SANITIZER_LINUX && SANITIZER_ANDROID