Export of internal Abseil changes

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e7f53dfbf809812e84770217777f81b6308a3084 by Abseil Team <absl-team@google.com>:

Add a parameter pack to absl profile to allow profiles to separate
dynamic data from static data that is available at constructor-time.

Background: `inline_element_size` is effectively constant, but there
is a data race between its initialization and its access. We had fixed that race by making
inline_element_size atomic.  This CL changes `inline_element_size`
back to a non-atomic integer, and provides a way for all profiles to
provide Register()-time values.
PiperOrigin-RevId: 413960559

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70234c5943f8e37e17c1d9c54d8ed61d39880abf by Chris Kennelly <ckennelly@google.com>:

Document that absl::FunctionRef does not allocate.

PiperOrigin-RevId: 413946831

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3308ae571412c4be3cc32d088c6edac98ff2d1ed by Samuel Benzaquen <sbenza@google.com>:

Internal change

PiperOrigin-RevId: 413933619

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1617093a730d055edcf7bc04fdd6509783f5f75d by Martijn Vels <mvels@google.com>:

Internal Change

PiperOrigin-RevId: 413778735

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03ad683f059c806a6c8b04f5b79b2662c3df8c73 by Evan Brown <ezb@google.com>:

Unify btree erase_if definitions and optimize them so that we only do rebalancing once per leaf node.

PiperOrigin-RevId: 413757280

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5ba402f70801938178e486617063f01c7862525d by Martijn Vels <mvels@google.com>:

Cleanup up cord sampling internals

PiperOrigin-RevId: 413755011

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522da8f9d3e0f11630d89fb41952004742bc335a by Evan Brown <ezb@google.com>:

Add b-tree benchmark for erase_if.

Since this benchmark doesn't work for std:: containers before C++20, disable it for them.

PiperOrigin-RevId: 413740844

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a690ea42de8ed4a761d00235d8b2fb7548ba9732 by Andy Getzendanner <durandal@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 413735737
GitOrigin-RevId: e7f53dfbf809812e84770217777f81b6308a3084
Change-Id: I4f9f9039ba92831bc48971964aa063244c9fed72

2 files changed, 6 insertions, 4 deletions

diff --git a/absl/strings/internal/cordz_update_tracker.h b/absl/strings/internal/cordz_update_tracker.h
index 7a41c180..c5170662 100644
--- a/absl/strings/internal/cordz_update_tracker.h
+++ b/absl/strings/internal/cordz_update_tracker.h
@@ -39,8 +39,8 @@ class CordzUpdateTracker {
   // Tracked update methods.
   enum MethodIdentifier {
     kUnknown,
-    kAppendBuffer,
     kAppendCord,
+    kAppendCordBuffer,
     kAppendExternalMemory,
     kAppendString,
     kAssignCord,
@@ -50,13 +50,14 @@ class CordzUpdateTracker {
     kConstructorString,
     kCordReader,
     kFlatten,
+    kGetAppendBuffer,
     kGetAppendRegion,
     kMakeCordFromExternal,
     kMoveAppendCord,
     kMoveAssignCord,
     kMovePrependCord,
-    kPrependBuffer,
     kPrependCord,
+    kPrependCordBuffer,
     kPrependString,
     kRemovePrefix,
     kRemoveSuffix,
diff --git a/absl/strings/internal/cordz_update_tracker_test.cc b/absl/strings/internal/cordz_update_tracker_test.cc
index 8eda529e..9b1f7986 100644
--- a/absl/strings/internal/cordz_update_tracker_test.cc
+++ b/absl/strings/internal/cordz_update_tracker_test.cc
@@ -37,8 +37,8 @@ using Methods = std::array<Method, Method::kNumMethods>;
 // Returns an array of all methods defined in `MethodIdentifier`
 Methods AllMethods() {
   return Methods{Method::kUnknown,
-                 Method::kAppendBuffer,
                  Method::kAppendCord,
+                 Method::kAppendCordBuffer,
                  Method::kAppendExternalMemory,
                  Method::kAppendString,
                  Method::kAssignCord,
@@ -48,13 +48,14 @@ Methods AllMethods() {
                  Method::kConstructorString,
                  Method::kCordReader,
                  Method::kFlatten,
+                 Method::kGetAppendBuffer,
                  Method::kGetAppendRegion,
                  Method::kMakeCordFromExternal,
                  Method::kMoveAppendCord,
                  Method::kMoveAssignCord,
                  Method::kMovePrependCord,
-                 Method::kPrependBuffer,
                  Method::kPrependCord,
+                 Method::kPrependCordBuffer,
                  Method::kPrependString,
                  Method::kRemovePrefix,
                  Method::kRemoveSuffix,