merge(3p/absl): subtree merge of Abseil up to e19260f r/1889

... notably, this includes Abseil's own StatusOr type, which
conflicted with our implementation (that was taken from TensorFlow).

Change-Id: Ie7d6764b64055caaeb8dc7b6b9d066291e6b538f

1 files changed, 0 insertions, 72 deletions

diff --git a/third_party/abseil_cpp/absl/base/dynamic_annotations.cc b/third_party/abseil_cpp/absl/base/dynamic_annotations.cc
deleted file mode 100644
index f26e673ec988..000000000000
--- a/third_party/abseil_cpp/absl/base/dynamic_annotations.cc
+++ /dev/null
@@ -1,72 +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.
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "absl/base/dynamic_annotations.h"
-
-// Compiler-based ThreadSanitizer defines
-// DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL = 1
-// and provides its own definitions of the functions.
-
-#ifndef DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL
-# define DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL 0
-#endif
-
-#if DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0 && !defined(__native_client__)
-
-extern "C" {
-
-static int GetRunningOnValgrind(void) {
-#ifdef RUNNING_ON_VALGRIND
-  if (RUNNING_ON_VALGRIND) return 1;
-#endif
-  char *running_on_valgrind_str = getenv("RUNNING_ON_VALGRIND");
-  if (running_on_valgrind_str) {
-    return strcmp(running_on_valgrind_str, "0") != 0;
-  }
-  return 0;
-}
-
-// See the comments in dynamic_annotations.h
-int RunningOnValgrind(void) {
-  static volatile int running_on_valgrind = -1;
-  int local_running_on_valgrind = running_on_valgrind;
-  // C doesn't have thread-safe initialization of statics, and we
-  // don't want to depend on pthread_once here, so hack it.
-  ANNOTATE_BENIGN_RACE(&running_on_valgrind, "safe hack");
-  if (local_running_on_valgrind == -1)
-    running_on_valgrind = local_running_on_valgrind = GetRunningOnValgrind();
-  return local_running_on_valgrind;
-}
-
-// See the comments in dynamic_annotations.h
-double ValgrindSlowdown(void) {
-  // Same initialization hack as in RunningOnValgrind().
-  static volatile double slowdown = 0.0;
-  double local_slowdown = slowdown;
-  ANNOTATE_BENIGN_RACE(&slowdown, "safe hack");
-  if (RunningOnValgrind() == 0) {
-    return 1.0;
-  }
-  if (local_slowdown == 0.0) {
-    char *env = getenv("VALGRIND_SLOWDOWN");
-    slowdown = local_slowdown = env ? atof(env) : 50.0;
-  }
-  return local_slowdown;
-}
-
-}  // extern "C"
-#endif  // DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL == 0