Export of internal Abseil changes

--
3e6352709da9a529e608eabff862a12bfaecb587 by Gennadiy Rozental <rogeeff@google.com>:

Replace local copy of FastTypeId with one shared in absl/base/internal.

PiperOrigin-RevId: 304181357

--
c89ea428f732226f4dceb508cd6ba3955a1e49e1 by Andy Getzendanner <durandal@google.com>:

Typo fix: add a missing colon.

PiperOrigin-RevId: 304064210

--
de2ee7a96bdc7193ffcceb6a2fd6bf464955cbe7 by Samuel Benzaquen <sbenza@google.com>:

Reduce the overhead of the registration token by using an empty struct instead
of bool.

PiperOrigin-RevId: 304054311

--
222f05d24fb1df7e815946543a7dc78847c83f92 by Derek Mauro <dmauro@google.com>:

Turn off hashtablez in opensource builds.

Hashtablez is an unsupported, internal-only feature for collecting
information about hashtable usage and performance. By turning it off
in builds where it is unsupported, we get just a little more performance.

PiperOrigin-RevId: 304035460
GitOrigin-RevId: 3e6352709da9a529e608eabff862a12bfaecb587
Change-Id: I0bfe9b5df808a7e35c154b39e6c80e68b0da2b70

absl/container/BUILD.bazel

@@ -257,6 +257,7 @@ cc_test(
         ":unordered_map_lookup_test",
         ":unordered_map_members_test",
         ":unordered_map_modifiers_test",
+        "//absl/base:raw_logging_internal",
         "//absl/types:any",
         "@com_google_googletest//:gtest_main",
     ],
@@ -290,6 +291,7 @@ cc_test(
         ":unordered_set_lookup_test",
         ":unordered_set_members_test",
         ":unordered_set_modifiers_test",
+        "//absl/base:raw_logging_internal",
         "//absl/memory",
         "//absl/strings",
         "@com_google_googletest//:gtest_main",

absl/container/CMakeLists.txt

@@ -303,6 +303,7 @@ absl_cc_test(
     absl::unordered_map_members_test
     absl::unordered_map_modifiers_test
     absl::any
+    absl::raw_logging_internal
     gmock_main
 )
 
@@ -339,6 +340,7 @@ absl_cc_test(
     absl::unordered_set_members_test
     absl::unordered_set_modifiers_test
     absl::memory
+    absl::raw_logging_internal
     absl::strings
     gmock_main
 )

absl/container/flat_hash_map_test.cc

@@ -16,6 +16,7 @@
 
 #include <memory>
 
+#include "absl/base/internal/raw_logging.h"
 #include "absl/container/internal/hash_generator_testing.h"
 #include "absl/container/internal/unordered_map_constructor_test.h"
 #include "absl/container/internal/unordered_map_lookup_test.h"
@@ -34,6 +35,19 @@ using ::testing::IsEmpty;
 using ::testing::Pair;
 using ::testing::UnorderedElementsAre;
 
+// Check that absl::flat_hash_map works in a global constructor.
+struct BeforeMain {
+  BeforeMain() {
+    absl::flat_hash_map<int, int> x;
+    x.insert({1, 1});
+    ABSL_RAW_CHECK(x.find(0) == x.end(), "x should not contain 0");
+    auto it = x.find(1);
+    ABSL_RAW_CHECK(it != x.end(), "x should contain 1");
+    ABSL_RAW_CHECK(it->second, "1 should map to 1");
+  }
+};
+const BeforeMain before_main;
+
 template <class K, class V>
 using Map = flat_hash_map<K, V, StatefulTestingHash, StatefulTestingEqual,
                           Alloc<std::pair<const K, V>>>;

absl/container/flat_hash_set_test.cc

@@ -16,6 +16,7 @@
 
 #include <vector>
 
+#include "absl/base/internal/raw_logging.h"
 #include "absl/container/internal/hash_generator_testing.h"
 #include "absl/container/internal/unordered_set_constructor_test.h"
 #include "absl/container/internal/unordered_set_lookup_test.h"
@@ -36,6 +37,17 @@ using ::testing::Pointee;
 using ::testing::UnorderedElementsAre;
 using ::testing::UnorderedElementsAreArray;
 
+// Check that absl::flat_hash_set works in a global constructor.
+struct BeforeMain {
+  BeforeMain() {
+    absl::flat_hash_set<int> x;
+    x.insert(1);
+    ABSL_RAW_CHECK(!x.contains(0), "x should not contain 0");
+    ABSL_RAW_CHECK(x.contains(1), "x should contain 1");
+  }
+};
+const BeforeMain before_main;
+
 template <class T>
 using Set =
     absl::flat_hash_set<T, StatefulTestingHash, StatefulTestingEqual, Alloc<T>>;

absl/container/internal/hashtablez_sampler.h

@@ -184,11 +184,6 @@ class HashtablezInfoHandle {
 #error ABSL_INTERNAL_HASHTABLEZ_SAMPLE cannot be directly set
 #endif  // defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
 
-#if (ABSL_PER_THREAD_TLS == 1) && !defined(ABSL_BUILD_DLL) && \
-    !defined(ABSL_CONSUME_DLL)
-#define ABSL_INTERNAL_HASHTABLEZ_SAMPLE
-#endif
-
 #if defined(ABSL_INTERNAL_HASHTABLEZ_SAMPLE)
 extern ABSL_PER_THREAD_TLS_KEYWORD int64_t global_next_sample;
 #endif  // ABSL_PER_THREAD_TLS