Export of internal Abseil changes

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f6fbb03bff276e72123e8590519079e87732ae62 by Abseil Team <absl-team@google.com>:

Replace static absl::Mutex with SpinLock in absl::Cords

to avoid static initializers by absl::Mutex destructors

PiperOrigin-RevId: 370694199

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654b7d9edfdc24f226990b2b46cbf91451a1d92a by Martijn Vels <mvels@google.com>:

Implement global data for CordzInfo in an ODR hardened way

This change puts the global data into a global list structure, and stores a reference to the global list in the handle itself. This hardens the implementation against ODR violations where info pointers are crossing dynamic library boundaries which are privately loaded.

PiperOrigin-RevId: 370673045

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712dba768e66ee2ba85d6010829c617cd2af6ba7 by Martijn Vels <mvels@google.com>:

Intrument Cord::operator= for Cordz

PiperOrigin-RevId: 370659149

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c0b347a2289e151b72680269332e264b8fa989c0 by Matt Kulukundis <kfm@google.com>:

Fix test guards for ABSL_ATTRIBUTE_RETURNS_NONNULL

PiperOrigin-RevId: 370594807

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c2bedaa3472ef223f907de2604f9b9b58852ec5f by Martijn Vels <mvels@google.com>:

Add new Cordz instrumentation on GetAppendRegion.

PiperOrigin-RevId: 370587761

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84fbfcc852697d509f6094482b86e84743a6b331 by Martijn Vels <mvels@google.com>:

Add instrumentation on Cord::Apppend(string_view)

PiperOrigin-RevId: 370576590

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9e077390b8ca2239e1cb7bfbe1d5a04f2fc11d30 by Abseil Team <absl-team@google.com>:

Google-internal changes only.

PiperOrigin-RevId: 370558424

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fb53c149eb2364ea34e3a67235f873866618b8ac by Matt Kulukundis <kfm@google.com>:

Update config.h macros with a few useful helpers to simplify version checking

PiperOrigin-RevId: 370557684

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abf8142e99b9ff7e15f6528a357f1005461950b0 by Martijn Vels <mvels@google.com>:

clang-format cord

PiperOrigin-RevId: 370549371

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e555985eabe63fcf0e980e9c433dd84caffec191 by Martijn Vels <mvels@google.com>:

Add MaybeUntrackCord() function

This function is near identical to the old UntrackCord() but allows info to be null, moving the cord.is_profiled() branch into CordzInfo.

PiperOrigin-RevId: 370528447

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3883538efe4601f7864bda70a50d868bb383c63b by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 370503186

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a9514b65542fde1bc73584e6f3c1c4b3a05f215f by Derek Mauro <dmauro@google.com>:

Add -Winvalid-constexpr to warning options for LLVM

PiperOrigin-RevId: 370455171

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d8a3966de2cf15a2dc28e17e49a3d27d205eca92 by Martijn Vels <mvels@google.com>:

Add naive UniqueGenerator<T, kMaxValues, ...> to avoid flakes from dup random values.

PiperOrigin-RevId: 370179772

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46d0caa1a12b68a5998d4f919e20f0f83b9286f8 by Martijn Vels <mvels@google.com>:

Add new Cordz instrumentation on PrependTree.

PiperOrigin-RevId: 370138969
GitOrigin-RevId: f6fbb03bff276e72123e8590519079e87732ae62
Change-Id: Ifa4c00a5c7b01198ee367a3253bea6b66612135e

1 files changed, 38 insertions, 0 deletions

diff --git a/absl/strings/cord_test_helpers.h b/absl/strings/cord_test_helpers.h
index 3815df81..6ccccc51 100644
--- a/absl/strings/cord_test_helpers.h
+++ b/absl/strings/cord_test_helpers.h
@@ -17,12 +17,50 @@
 #ifndef ABSL_STRINGS_CORD_TEST_HELPERS_H_
 #define ABSL_STRINGS_CORD_TEST_HELPERS_H_
 
+#include <cstdint>
+#include <iostream>
+
 #include "absl/strings/cord.h"
 #include "absl/strings/internal/cord_internal.h"
+#include "absl/strings/string_view.h"
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
 
+// Cord sizes relevant for testing
+enum class TestCordSize {
+  kEmpty = 0,
+  kInlined = cord_internal::kMaxInline / 2 + 1,
+  kSmall = cord_internal::kMaxBytesToCopy / 2 + 1,
+  kMedium = cord_internal::kMaxFlatLength / 2 + 1,
+  kLarge = cord_internal::kMaxFlatLength * 4
+};
+
+// To string helper
+inline absl::string_view ToString(TestCordSize size) {
+  switch (size) {
+    case TestCordSize::kEmpty:
+      return "Empty";
+    case TestCordSize::kInlined:
+      return "Inlined";
+    case TestCordSize::kSmall:
+      return "Small";
+    case TestCordSize::kMedium:
+      return "Medium";
+    case TestCordSize::kLarge:
+      return "Large";
+  }
+  return "???";
+}
+
+// Returns the length matching the specified size
+inline size_t Length(TestCordSize size) { return static_cast<size_t>(size); }
+
+// Stream output helper
+inline std::ostream& operator<<(std::ostream& stream, TestCordSize size) {
+  return stream << ToString(size);
+}
+
 // Creates a multi-segment Cord from an iterable container of strings.  The
 // resulting Cord is guaranteed to have one segment for every string in the
 // container.  This allows code to be unit tested with multi-segment Cord