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-rw-r--r--absl/strings/BUILD.bazel4
-rw-r--r--absl/strings/CMakeLists.txt4
-rw-r--r--absl/strings/cord.cc29
-rw-r--r--absl/strings/cord.h5
-rw-r--r--absl/strings/internal/cord_rep_crc.cc7
-rw-r--r--absl/strings/internal/cord_rep_crc.h7
-rw-r--r--absl/strings/internal/cord_rep_crc_test.cc34
-rw-r--r--absl/strings/internal/cordz_info_statistics_test.cc4
8 files changed, 68 insertions, 26 deletions
diff --git a/absl/strings/BUILD.bazel b/absl/strings/BUILD.bazel
index 3c852989..d86f59f0 100644
--- a/absl/strings/BUILD.bazel
+++ b/absl/strings/BUILD.bazel
@@ -324,6 +324,7 @@ cc_library(
"//absl/container:compressed_tuple",
"//absl/container:inlined_vector",
"//absl/container:layout",
+ "//absl/crc:crc_cord_state",
"//absl/functional:function_ref",
"//absl/meta:type_traits",
"//absl/types:span",
@@ -405,6 +406,7 @@ cc_test(
":cord_internal",
":cord_rep_test_util",
"//absl/base:config",
+ "//absl/crc:crc_cord_state",
"@com_google_googletest//:gtest_main",
],
)
@@ -463,6 +465,7 @@ cc_library(
"//absl/base:raw_logging_internal",
"//absl/container:fixed_array",
"//absl/container:inlined_vector",
+ "//absl/crc:crc_cord_state",
"//absl/functional:function_ref",
"//absl/meta:type_traits",
"//absl/numeric:bits",
@@ -659,6 +662,7 @@ cc_test(
":cordz_update_scope",
":cordz_update_tracker",
"//absl/base:config",
+ "//absl/crc:crc_cord_state",
"//absl/synchronization",
"//absl/synchronization:thread_pool",
"@com_google_googletest//:gtest_main",
diff --git a/absl/strings/CMakeLists.txt b/absl/strings/CMakeLists.txt
index 33e4ff1b..a23b34a1 100644
--- a/absl/strings/CMakeLists.txt
+++ b/absl/strings/CMakeLists.txt
@@ -605,6 +605,7 @@ absl_cc_library(
absl::compressed_tuple
absl::config
absl::core_headers
+ absl::crc_cord_state
absl::endian
absl::inlined_vector
absl::layout
@@ -783,6 +784,7 @@ absl_cc_test(
absl::cordz_statistics
absl::cordz_update_scope
absl::cordz_update_tracker
+ absl::crc_cord_state
absl::thread_pool
GTest::gmock_main
)
@@ -882,6 +884,7 @@ absl_cc_library(
absl::cordz_update_scope
absl::cordz_update_tracker
absl::core_headers
+ absl::crc_cord_state
absl::endian
absl::fixed_array
absl::function_ref
@@ -1054,6 +1057,7 @@ absl_cc_test(
absl::config
absl::cord_internal
absl::cord_rep_test_util
+ absl::crc_cord_state
GTest::gmock_main
)
diff --git a/absl/strings/cord.cc b/absl/strings/cord.cc
index 92822c05..0bac4164 100644
--- a/absl/strings/cord.cc
+++ b/absl/strings/cord.cc
@@ -35,6 +35,7 @@
#include "absl/base/port.h"
#include "absl/container/fixed_array.h"
#include "absl/container/inlined_vector.h"
+#include "absl/crc/internal/crc_cord_state.h"
#include "absl/strings/cord_buffer.h"
#include "absl/strings/escaping.h"
#include "absl/strings/internal/cord_data_edge.h"
@@ -854,28 +855,44 @@ inline absl::string_view Cord::InlineRep::FindFlatStartPiece() const {
return absl::string_view(node->external()->base + offset, length);
}
-void Cord::SetExpectedChecksum(uint32_t crc) {
+void Cord::SetCrcCordState(crc_internal::CrcCordState state) {
auto constexpr method = CordzUpdateTracker::kSetExpectedChecksum;
if (empty()) {
contents_.MaybeRemoveEmptyCrcNode();
- CordRep* rep = CordRepCrc::New(nullptr, crc);
+ CordRep* rep = CordRepCrc::New(nullptr, std::move(state));
contents_.EmplaceTree(rep, method);
} else if (!contents_.is_tree()) {
CordRep* rep = contents_.MakeFlatWithExtraCapacity(0);
- rep = CordRepCrc::New(rep, crc);
+ rep = CordRepCrc::New(rep, std::move(state));
contents_.EmplaceTree(rep, method);
} else {
const CordzUpdateScope scope(contents_.data_.cordz_info(), method);
- CordRep* rep = CordRepCrc::New(contents_.data_.as_tree(), crc);
+ CordRep* rep = CordRepCrc::New(contents_.data_.as_tree(), std::move(state));
contents_.SetTree(rep, scope);
}
}
+void Cord::SetExpectedChecksum(uint32_t crc) {
+ // Construct a CrcCordState with a single chunk.
+ crc_internal::CrcCordState state;
+ state.mutable_rep()->prefix_crc.push_back(
+ crc_internal::CrcCordState::PrefixCrc(size(), absl::crc32c_t{crc}));
+ SetCrcCordState(std::move(state));
+}
+
+const crc_internal::CrcCordState* Cord::MaybeGetCrcCordState() const {
+ if (!contents_.is_tree() || !contents_.tree()->IsCrc()) {
+ return nullptr;
+ }
+ return &contents_.tree()->crc()->crc_cord_state;
+}
+
absl::optional<uint32_t> Cord::ExpectedChecksum() const {
if (!contents_.is_tree() || !contents_.tree()->IsCrc()) {
return absl::nullopt;
}
- return contents_.tree()->crc()->crc;
+ return static_cast<uint32_t>(
+ contents_.tree()->crc()->crc_cord_state.Checksum());
}
inline int Cord::CompareSlowPath(absl::string_view rhs, size_t compared_size,
@@ -1255,7 +1272,7 @@ static void DumpNode(CordRep* rep, bool include_data, std::ostream* os,
*os << "NULL\n";
leaf = true;
} else if (rep->IsCrc()) {
- *os << "CRC crc=" << rep->crc()->crc << "\n";
+ *os << "CRC crc=" << rep->crc()->crc_cord_state.Checksum() << "\n";
indent += kIndentStep;
rep = rep->crc()->child;
} else if (rep->IsSubstring()) {
diff --git a/absl/strings/cord.h b/absl/strings/cord.h
index 6e3da89e..1349b115 100644
--- a/absl/strings/cord.h
+++ b/absl/strings/cord.h
@@ -76,6 +76,7 @@
#include "absl/base/macros.h"
#include "absl/base/port.h"
#include "absl/container/inlined_vector.h"
+#include "absl/crc/internal/crc_cord_state.h"
#include "absl/functional/function_ref.h"
#include "absl/meta/type_traits.h"
#include "absl/strings/cord_analysis.h"
@@ -1002,6 +1003,10 @@ class Cord {
});
return H::combine(combiner.finalize(std::move(hash_state)), size());
}
+
+ friend class CrcCord;
+ void SetCrcCordState(crc_internal::CrcCordState state);
+ const crc_internal::CrcCordState* MaybeGetCrcCordState() const;
};
ABSL_NAMESPACE_END
diff --git a/absl/strings/internal/cord_rep_crc.cc b/absl/strings/internal/cord_rep_crc.cc
index 7d7273ef..dbe54cc4 100644
--- a/absl/strings/internal/cord_rep_crc.cc
+++ b/absl/strings/internal/cord_rep_crc.cc
@@ -16,6 +16,7 @@
#include <cassert>
#include <cstdint>
+#include <utility>
#include "absl/base/config.h"
#include "absl/strings/internal/cord_internal.h"
@@ -24,10 +25,10 @@ namespace absl {
ABSL_NAMESPACE_BEGIN
namespace cord_internal {
-CordRepCrc* CordRepCrc::New(CordRep* child, uint32_t crc) {
+CordRepCrc* CordRepCrc::New(CordRep* child, crc_internal::CrcCordState state) {
if (child != nullptr && child->IsCrc()) {
if (child->refcount.IsOne()) {
- child->crc()->crc = crc;
+ child->crc()->crc_cord_state = std::move(state);
return child->crc();
}
CordRep* old = child;
@@ -39,7 +40,7 @@ CordRepCrc* CordRepCrc::New(CordRep* child, uint32_t crc) {
new_cordrep->length = child != nullptr ? child->length : 0;
new_cordrep->tag = cord_internal::CRC;
new_cordrep->child = child;
- new_cordrep->crc = crc;
+ new_cordrep->crc_cord_state = std::move(state);
return new_cordrep;
}
diff --git a/absl/strings/internal/cord_rep_crc.h b/absl/strings/internal/cord_rep_crc.h
index 455a1127..379d7a60 100644
--- a/absl/strings/internal/cord_rep_crc.h
+++ b/absl/strings/internal/cord_rep_crc.h
@@ -20,6 +20,7 @@
#include "absl/base/config.h"
#include "absl/base/optimization.h"
+#include "absl/crc/internal/crc_cord_state.h"
#include "absl/strings/internal/cord_internal.h"
namespace absl {
@@ -34,14 +35,14 @@ namespace cord_internal {
// the contained checksum is the user's responsibility.
struct CordRepCrc : public CordRep {
CordRep* child;
- uint32_t crc;
+ absl::crc_internal::CrcCordState crc_cord_state;
// Consumes `child` and returns a CordRepCrc prefixed tree containing `child`.
// If the specified `child` is itself a CordRepCrc node, then this method
- // either replaces the existing node, or directly updates the crc value in it
+ // either replaces the existing node, or directly updates the crc state in it
// depending on the node being shared or not, i.e.: refcount.IsOne().
// `child` must only be null if the Cord is empty. Never returns null.
- static CordRepCrc* New(CordRep* child, uint32_t crc);
+ static CordRepCrc* New(CordRep* child, crc_internal::CrcCordState state);
// Destroys (deletes) the provided node. `node` must not be null.
static void Destroy(CordRepCrc* node);
diff --git a/absl/strings/internal/cord_rep_crc_test.cc b/absl/strings/internal/cord_rep_crc_test.cc
index 42a9110b..3d27c33c 100644
--- a/absl/strings/internal/cord_rep_crc_test.cc
+++ b/absl/strings/internal/cord_rep_crc_test.cc
@@ -17,6 +17,7 @@
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/config.h"
+#include "absl/crc/internal/crc_cord_state.h"
#include "absl/strings/internal/cord_internal.h"
#include "absl/strings/internal/cord_rep_test_util.h"
@@ -38,33 +39,40 @@ TEST(CordRepCrc, RemoveCrcWithNullptr) {
#endif // !NDEBUG && GTEST_HAS_DEATH_TEST
+absl::crc_internal::CrcCordState MakeCrcCordState(uint32_t crc) {
+ crc_internal::CrcCordState state;
+ state.mutable_rep()->prefix_crc.push_back(
+ crc_internal::CrcCordState::PrefixCrc(42, crc32c_t{crc}));
+ return state;
+}
+
TEST(CordRepCrc, NewDestroy) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
- CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+ CordRepCrc* crc = CordRepCrc::New(rep, MakeCrcCordState(12345));
EXPECT_TRUE(crc->refcount.IsOne());
EXPECT_THAT(crc->child, Eq(rep));
- EXPECT_THAT(crc->crc, Eq(12345u));
+ EXPECT_THAT(crc->crc_cord_state.Checksum(), Eq(crc32c_t{12345u}));
EXPECT_TRUE(rep->refcount.IsOne());
CordRepCrc::Destroy(crc);
}
TEST(CordRepCrc, NewExistingCrcNotShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
- CordRepCrc* crc = CordRepCrc::New(rep, 12345);
- CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
+ CordRepCrc* crc = CordRepCrc::New(rep, MakeCrcCordState(12345));
+ CordRepCrc* new_crc = CordRepCrc::New(crc, MakeCrcCordState(54321));
EXPECT_THAT(new_crc, Eq(crc));
EXPECT_TRUE(new_crc->refcount.IsOne());
EXPECT_THAT(new_crc->child, Eq(rep));
- EXPECT_THAT(new_crc->crc, Eq(54321u));
+ EXPECT_THAT(new_crc->crc_cord_state.Checksum(), Eq(crc32c_t{54321u}));
EXPECT_TRUE(rep->refcount.IsOne());
CordRepCrc::Destroy(new_crc);
}
TEST(CordRepCrc, NewExistingCrcShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
- CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+ CordRepCrc* crc = CordRepCrc::New(rep, MakeCrcCordState(12345));
CordRep::Ref(crc);
- CordRepCrc* new_crc = CordRepCrc::New(crc, 54321);
+ CordRepCrc* new_crc = CordRepCrc::New(crc, MakeCrcCordState(54321));
EXPECT_THAT(new_crc, Ne(crc));
EXPECT_TRUE(new_crc->refcount.IsOne());
@@ -72,19 +80,19 @@ TEST(CordRepCrc, NewExistingCrcShared) {
EXPECT_FALSE(rep->refcount.IsOne());
EXPECT_THAT(crc->child, Eq(rep));
EXPECT_THAT(new_crc->child, Eq(rep));
- EXPECT_THAT(crc->crc, Eq(12345u));
- EXPECT_THAT(new_crc->crc, Eq(54321u));
+ EXPECT_THAT(crc->crc_cord_state.Checksum(), Eq(crc32c_t{12345u}));
+ EXPECT_THAT(new_crc->crc_cord_state.Checksum(), Eq(crc32c_t{54321u}));
CordRep::Unref(crc);
CordRep::Unref(new_crc);
}
TEST(CordRepCrc, NewEmpty) {
- CordRepCrc* crc = CordRepCrc::New(nullptr, 12345);
+ CordRepCrc* crc = CordRepCrc::New(nullptr, MakeCrcCordState(12345));
EXPECT_TRUE(crc->refcount.IsOne());
EXPECT_THAT(crc->child, IsNull());
EXPECT_THAT(crc->length, Eq(0u));
- EXPECT_THAT(crc->crc, Eq(12345u));
+ EXPECT_THAT(crc->crc_cord_state.Checksum(), Eq(crc32c_t{12345u}));
EXPECT_TRUE(crc->refcount.IsOne());
CordRepCrc::Destroy(crc);
}
@@ -98,7 +106,7 @@ TEST(CordRepCrc, RemoveCrcNotCrc) {
TEST(CordRepCrc, RemoveCrcNotShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
- CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+ CordRepCrc* crc = CordRepCrc::New(rep, MakeCrcCordState(12345));
CordRep* nocrc = RemoveCrcNode(crc);
EXPECT_THAT(nocrc, Eq(rep));
EXPECT_TRUE(rep->refcount.IsOne());
@@ -107,7 +115,7 @@ TEST(CordRepCrc, RemoveCrcNotShared) {
TEST(CordRepCrc, RemoveCrcShared) {
CordRep* rep = cordrep_testing::MakeFlat("Hello world");
- CordRepCrc* crc = CordRepCrc::New(rep, 12345);
+ CordRepCrc* crc = CordRepCrc::New(rep, MakeCrcCordState(12345));
CordRep::Ref(crc);
CordRep* nocrc = RemoveCrcNode(crc);
EXPECT_THAT(nocrc, Eq(rep));
diff --git a/absl/strings/internal/cordz_info_statistics_test.cc b/absl/strings/internal/cordz_info_statistics_test.cc
index 6d6feb52..53d2f2ea 100644
--- a/absl/strings/internal/cordz_info_statistics_test.cc
+++ b/absl/strings/internal/cordz_info_statistics_test.cc
@@ -19,6 +19,7 @@
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/base/config.h"
+#include "absl/crc/internal/crc_cord_state.h"
#include "absl/strings/cord.h"
#include "absl/strings/internal/cord_internal.h"
#include "absl/strings/internal/cord_rep_btree.h"
@@ -451,7 +452,8 @@ TEST(CordzInfoStatisticsTest, BtreeNodeShared) {
TEST(CordzInfoStatisticsTest, Crc) {
RefHelper ref;
auto* left = Flat(1000);
- auto* crc = ref.NeedsUnref(CordRepCrc::New(left, 12345));
+ auto* crc =
+ ref.NeedsUnref(CordRepCrc::New(left, crc_internal::CrcCordState()));
CordzStatistics expected;
expected.size = left->length;
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-11 10:14:37 +0000