Export of internal Abseil changes.

--
a2adbf75201f6b7feba929f77dfc4f87f9c1110b by Abseil Team <[email protected]>:

This change allows for capturing the address of the mutex from which a call to `Block(...)` could be introducing latency. The attribute is a no-op if the application is not being built with XRay instrumentation.

See http://llvm.org/docs/XRay.html for more information about XRay.

PiperOrigin-RevId: 225752598

--
6bc7f25573ddc6711f484dfacab9459f45e0bf42 by Abseil Team <[email protected]>:

Update absl/utility/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)

PiperOrigin-RevId: 225651883

--
4acde5e72032f31a26a1ffa53a28f35dbb0bd7d3 by Abseil Team <[email protected]>:

Update absl/types/CMakeLists.txt to use new functions
i.e. absl_cc_(library|test)

PiperOrigin-RevId: 225584788

--
fe2c740d64b17cece25eee4e5d2196a7c059d3e9 by Abseil Team <[email protected]>:

Update auto-generated build options files.

PiperOrigin-RevId: 225557283

--
cd779dddceeee191ee82deb6b9030c4db288e758 by Jon Cohen <[email protected]>:

Internal change.

PiperOrigin-RevId: 225556657

--
3d56dd132d845930c3fb520a39ee77ecb2430bd2 by Matt Kulukundis <[email protected]>:

Internal cleanup

PiperOrigin-RevId: 225488946
GitOrigin-RevId: a2adbf75201f6b7feba929f77dfc4f87f9c1110b
Change-Id: I1b2178e053bdebc8cf3dcb017b0e247619b81a0c

Author: Abseil Team

CMake/AbseilHelpers.cmake

@@ -135,7 +135,9 @@ function(absl_cc_library)
     endif()
 
     # Check if this is a header-only library
-    if ("${ABSL_CC_LIB_SRCS}" STREQUAL "")
+    set(ABSL_CC_SRCS "${ABSL_CC_LIB_SRCS}")
+    list(FILTER ABSL_CC_SRCS EXCLUDE REGEX ".*\\.h")
+    if ("${ABSL_CC_SRCS}" STREQUAL "")
       set(ABSL_CC_LIB_IS_INTERFACE 1)
     else()
       set(ABSL_CC_LIB_IS_INTERFACE 0)

CMakeLists.txt

@@ -48,9 +48,6 @@ include(AbseilHelpers)
 # include current path
 list(APPEND ABSL_COMMON_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR})
 
-# -fexceptions
-set(ABSL_EXCEPTIONS_FLAG "${CMAKE_CXX_EXCEPTIONS}")
-
 if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
   set(ABSL_USING_CLANG ON)
 else()

absl/base/CMakeLists.txt

@@ -181,10 +181,11 @@ absl_cc_library(
   SRCS
     "internal/exception_safety_testing.cc"
   COPTS
-    ${ABSL_DEFAULT_COPTS}
+    ${ABSL_TEST_COPTS}
     ${ABSL_EXCEPTIONS_FLAG}
+  LINKOPTS
+    ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}
   DEPS
-    absl::base
     absl::config
     absl::pretty_function
     absl::memory
@@ -201,6 +202,7 @@ absl_cc_test(
   SRCS
     "exception_safety_testing_test.cc"
   COPTS
+    ${ABSL_TEST_COPTS}
     ${ABSL_EXCEPTIONS_FLAG}
   LINKOPTS
     ${ABSL_EXCEPTIONS_FLAG_LINKOPTS}

absl/container/BUILD.bazel

@@ -17,9 +17,9 @@
 load(
     "//absl:copts/configure_copts.bzl",
     "ABSL_DEFAULT_COPTS",
-    "ABSL_TEST_COPTS",
     "ABSL_EXCEPTIONS_FLAG",
     "ABSL_EXCEPTIONS_FLAG_LINKOPTS",
+    "ABSL_TEST_COPTS",
 )
 
 package(default_visibility = ["//visibility:public"])
@@ -463,6 +463,12 @@ cc_library(
     ],
 )
 
+cc_library(
+    name = "have_sse",
+    hdrs = ["internal/have_sse.h"],
+    copts = ABSL_DEFAULT_COPTS,
+)
+
 cc_library(
     name = "raw_hash_set",
     srcs = ["internal/raw_hash_set.cc"],
@@ -473,6 +479,7 @@ cc_library(
         ":container_memory",
         ":hash_policy_traits",
         ":hashtable_debug_hooks",
+        ":have_sse",
         ":layout",
         "//absl/base:bits",
         "//absl/base:config",

absl/container/CMakeLists.txt

@@ -452,6 +452,16 @@ absl_cc_library(
   PUBLIC
 )
 
+absl_cc_library(
+  NAME
+    have_sse
+  HDRS
+    "internal/have_sse.h"
+  COPTS
+    ${ABSL_DEFAULT_COPTS}
+  PUBLIC
+)
+
 absl_cc_library(
   NAME
     node_hash_policy
@@ -496,15 +506,16 @@ absl_cc_library(
   COPTS
     ${ABSL_DEFAULT_COPTS}
   DEPS
+    absl::bits
     absl::compressed_tuple
+    absl::config
     absl::container_memory
+    absl::core_headers
+    absl::endian
     absl::hash_policy_traits
     absl::hashtable_debug_hooks
+    absl::have_sse
     absl::layout
-    absl::bits
-    absl::config
-    absl::core_headers
-    absl::endian
     absl::memory
     absl::meta
     absl::optional

absl/container/internal/have_sse.h

@@ -0,0 +1,49 @@
+// Copyright 2018 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
+//
+//      http://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.
+//
+// Shared config probing for SSE instructions used in Swiss tables.
+#ifndef ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
+#define ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_
+
+#ifndef SWISSTABLE_HAVE_SSE2
+#if defined(__SSE2__) ||  \
+    (defined(_MSC_VER) && \
+     (defined(_M_X64) || (defined(_M_IX86) && _M_IX86_FP >= 2)))
+#define SWISSTABLE_HAVE_SSE2 1
+#else
+#define SWISSTABLE_HAVE_SSE2 0
+#endif
+#endif
+
+#ifndef SWISSTABLE_HAVE_SSSE3
+#ifdef __SSSE3__
+#define SWISSTABLE_HAVE_SSSE3 1
+#else
+#define SWISSTABLE_HAVE_SSSE3 0
+#endif
+#endif
+
+#if SWISSTABLE_HAVE_SSSE3 && !SWISSTABLE_HAVE_SSE2
+#error "Bad configuration!"
+#endif
+
+#if SWISSTABLE_HAVE_SSE2
+#include <emmintrin.h>
+#endif
+
+#if SWISSTABLE_HAVE_SSSE3
+#include <tmmintrin.h>
+#endif
+
+#endif  // ABSL_CONTAINER_INTERNAL_HAVE_SSE_H_

absl/container/internal/raw_hash_set.h

@@ -91,36 +91,6 @@
 #ifndef ABSL_CONTAINER_INTERNAL_RAW_HASH_SET_H_
 #define ABSL_CONTAINER_INTERNAL_RAW_HASH_SET_H_
 
-#ifndef SWISSTABLE_HAVE_SSE2
-#if defined(__SSE2__) ||  \
-    (defined(_MSC_VER) && \
-     (defined(_M_X64) || (defined(_M_IX86) && _M_IX86_FP >= 2)))
-#define SWISSTABLE_HAVE_SSE2 1
-#else
-#define SWISSTABLE_HAVE_SSE2 0
-#endif
-#endif
-
-#ifndef SWISSTABLE_HAVE_SSSE3
-#ifdef __SSSE3__
-#define SWISSTABLE_HAVE_SSSE3 1
-#else
-#define SWISSTABLE_HAVE_SSSE3 0
-#endif
-#endif
-
-#if SWISSTABLE_HAVE_SSSE3 && !SWISSTABLE_HAVE_SSE2
-#error "Bad configuration!"
-#endif
-
-#if SWISSTABLE_HAVE_SSE2
-#include <emmintrin.h>
-#endif
-
-#if SWISSTABLE_HAVE_SSSE3
-#include <tmmintrin.h>
-#endif
-
 #include <algorithm>
 #include <cmath>
 #include <cstdint>
@@ -139,6 +109,7 @@
 #include "absl/container/internal/container_memory.h"
 #include "absl/container/internal/hash_policy_traits.h"
 #include "absl/container/internal/hashtable_debug_hooks.h"
+#include "absl/container/internal/have_sse.h"
 #include "absl/container/internal/layout.h"
 #include "absl/memory/memory.h"
 #include "absl/meta/type_traits.h"

absl/copts/GENERATED_AbseilCopts.cmake

@@ -1,7 +1,7 @@
 # GENERATED! DO NOT MANUALLY EDIT THIS FILE.
 #
 # (1) Edit absl/copts/copts.py.
-# (2) Run `<path_to_absl>/copts/generate_copts.py`.
+# (2) Run `python <path_to_absl>/copts/generate_copts.py`.
 
 list(APPEND GCC_EXCEPTIONS_FLAGS
     "-fexceptions"
@@ -48,6 +48,7 @@ list(APPEND LLVM_FLAGS
     "-Wno-double-promotion"
     "-Wno-comma"
     "-Wno-extra-semi"
+    "-Wno-extra-semi-stmt"
     "-Wno-packed"
     "-Wno-padded"
     "-Wno-sign-compare"

absl/copts/GENERATED_copts.bzl

@@ -1,7 +1,7 @@
 """GENERATED! DO NOT MANUALLY EDIT THIS FILE.
 
 (1) Edit absl/copts/copts.py.
-(2) Run `<path_to_absl>/copts/generate_copts.py`.
+(2) Run `python <path_to_absl>/copts/generate_copts.py`.
 """
 
 GCC_EXCEPTIONS_FLAGS = [
@@ -49,6 +49,7 @@ LLVM_FLAGS = [
     "-Wno-double-promotion",
     "-Wno-comma",
     "-Wno-extra-semi",
+    "-Wno-extra-semi-stmt",
     "-Wno-packed",
     "-Wno-padded",
     "-Wno-sign-compare",

absl/copts/copts.py

@@ -3,15 +3,15 @@
 This is the source of truth for Abseil compiler options.  To modify Abseil
 compilation options:
 
-  (1) Edit the appropriate list in this file.
+  (1) Edit the appropriate list in this file based on the platform the flag is
+      needed on.
   (2) Run `<path_to_absl>/copts/generate_copts.py`.
 
 The generated copts are consumed by configure_copts.bzl and
 AbseilConfigureCopts.cmake.
 """
 
 import collections  # absl:google-only(used for internal flags)
-
 COPT_VARS = {
     "GCC_FLAGS": [
         "-Wall",

absl/synchronization/mutex.cc

@@ -1079,7 +1079,7 @@ void Mutex::TryRemove(PerThreadSynch *s) {
 // if the wait extends past the absolute time specified, even if "s" is still
 // on the mutex queue.  In this case, remove "s" from the queue and return
 // true, otherwise return false.
-void Mutex::Block(PerThreadSynch *s) {
+ABSL_XRAY_LOG_ARGS(1) void Mutex::Block(PerThreadSynch *s) {
   while (s->state.load(std::memory_order_acquire) == PerThreadSynch::kQueued) {
     if (!DecrementSynchSem(this, s, s->waitp->timeout)) {
       // After a timeout, we go into a spin loop until we remove ourselves