1 files changed, 0 insertions, 115 deletions
diff --git a/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h b/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h
deleted file mode 100644
index 8ab439153a..0000000000
--- a/third_party/abseil_cpp/absl/synchronization/internal/per_thread_sem.h
+++ /dev/null
@@ -1,115 +0,0 @@
-// Copyright 2017 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-// PerThreadSem is a low-level synchronization primitive controlling the
-// runnability of a single thread, used internally by Mutex and CondVar.
-//
-// This is NOT a general-purpose synchronization mechanism, and should not be
-// used directly by applications.  Applications should use Mutex and CondVar.
-//
-// The semantics of PerThreadSem are the same as that of a counting semaphore.
-// Each thread maintains an abstract "count" value associated with its identity.
-
-#ifndef ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_
-#define ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_
-
-#include <atomic>
-
-#include "absl/base/internal/thread_identity.h"
-#include "absl/synchronization/internal/create_thread_identity.h"
-#include "absl/synchronization/internal/kernel_timeout.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-
-class Mutex;
-
-namespace synchronization_internal {
-
-class PerThreadSem {
- public:
-  PerThreadSem() = delete;
-  PerThreadSem(const PerThreadSem&) = delete;
-  PerThreadSem& operator=(const PerThreadSem&) = delete;
-
-  // Routine invoked periodically (once a second) by a background thread.
-  // Has no effect on user-visible state.
-  static void Tick(base_internal::ThreadIdentity* identity);
-
-  // ---------------------------------------------------------------------------
-  // Routines used by autosizing threadpools to detect when threads are
-  // blocked.  Each thread has a counter pointer, initially zero.  If non-zero,
-  // the implementation atomically increments the counter when it blocks on a
-  // semaphore, a decrements it again when it wakes.  This allows a threadpool
-  // to keep track of how many of its threads are blocked.
-  // SetThreadBlockedCounter() should be used only by threadpool
-  // implementations.  GetThreadBlockedCounter() should be used by modules that
-  // block threads; if the pointer returned is non-zero, the location should be
-  // incremented before the thread blocks, and decremented after it wakes.
-  static void SetThreadBlockedCounter(std::atomic<int> *counter);
-  static std::atomic<int> *GetThreadBlockedCounter();
-
- private:
-  // Create the PerThreadSem associated with "identity".  Initializes count=0.
-  // REQUIRES: May only be called by ThreadIdentity.
-  static void Init(base_internal::ThreadIdentity* identity);
-
-  // Destroy the PerThreadSem associated with "identity".
-  // REQUIRES: May only be called by ThreadIdentity.
-  static void Destroy(base_internal::ThreadIdentity* identity);
-
-  // Increments "identity"'s count.
-  static inline void Post(base_internal::ThreadIdentity* identity);
-
-  // Waits until either our count > 0 or t has expired.
-  // If count > 0, decrements count and returns true.  Otherwise returns false.
-  // !t.has_timeout() => Wait(t) will return true.
-  static inline bool Wait(KernelTimeout t);
-
-  // White-listed callers.
-  friend class PerThreadSemTest;
-  friend class absl::Mutex;
-  friend absl::base_internal::ThreadIdentity* CreateThreadIdentity();
-  friend void ReclaimThreadIdentity(void* v);
-};
-
-}  // namespace synchronization_internal
-ABSL_NAMESPACE_END
-}  // namespace absl
-
-// In some build configurations we pass --detect-odr-violations to the
-// gold linker.  This causes it to flag weak symbol overrides as ODR
-// violations.  Because ODR only applies to C++ and not C,
-// --detect-odr-violations ignores symbols not mangled with C++ names.
-// By changing our extension points to be extern "C", we dodge this
-// check.
-extern "C" {
-void AbslInternalPerThreadSemPost(
-    absl::base_internal::ThreadIdentity* identity);
-bool AbslInternalPerThreadSemWait(
-    absl::synchronization_internal::KernelTimeout t);
-}  // extern "C"
-
-void absl::synchronization_internal::PerThreadSem::Post(
-    absl::base_internal::ThreadIdentity* identity) {
-  AbslInternalPerThreadSemPost(identity);
-}
-
-bool absl::synchronization_internal::PerThreadSem::Wait(
-    absl::synchronization_internal::KernelTimeout t) {
-  return AbslInternalPerThreadSemWait(t);
-}
-
-#endif  // ABSL_SYNCHRONIZATION_INTERNAL_PER_THREAD_SEM_H_