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-rw-r--r--abseil-cpp/absl/strings/internal/cord_internal.cc76
1 files changed, 76 insertions, 0 deletions
diff --git a/abseil-cpp/absl/strings/internal/cord_internal.cc b/abseil-cpp/absl/strings/internal/cord_internal.cc
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+// Copyright 2020 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
+//
+// https://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.
+#include "absl/strings/internal/cord_internal.h"
+
+#include <atomic>
+#include <cassert>
+#include <memory>
+
+#include "absl/base/internal/raw_logging.h"
+#include "absl/container/inlined_vector.h"
+#include "absl/strings/internal/cord_rep_btree.h"
+#include "absl/strings/internal/cord_rep_crc.h"
+#include "absl/strings/internal/cord_rep_flat.h"
+#include "absl/strings/internal/cord_rep_ring.h"
+#include "absl/strings/str_cat.h"
+
+namespace absl {
+ABSL_NAMESPACE_BEGIN
+namespace cord_internal {
+
+ABSL_CONST_INIT std::atomic<bool> cord_ring_buffer_enabled(
+ kCordEnableRingBufferDefault);
+ABSL_CONST_INIT std::atomic<bool> shallow_subcords_enabled(
+ kCordShallowSubcordsDefault);
+
+void LogFatalNodeType(CordRep* rep) {
+ ABSL_INTERNAL_LOG(FATAL, absl::StrCat("Unexpected node type: ",
+ static_cast<int>(rep->tag)));
+}
+
+void CordRep::Destroy(CordRep* rep) {
+ assert(rep != nullptr);
+
+ while (true) {
+ assert(!rep->refcount.IsImmortal());
+ if (rep->tag == BTREE) {
+ CordRepBtree::Destroy(rep->btree());
+ return;
+ } else if (rep->tag == RING) {
+ CordRepRing::Destroy(rep->ring());
+ return;
+ } else if (rep->tag == EXTERNAL) {
+ CordRepExternal::Delete(rep);
+ return;
+ } else if (rep->tag == SUBSTRING) {
+ CordRepSubstring* rep_substring = rep->substring();
+ rep = rep_substring->child;
+ delete rep_substring;
+ if (rep->refcount.Decrement()) {
+ return;
+ }
+ } else if (rep->tag == CRC) {
+ CordRepCrc::Destroy(rep->crc());
+ return;
+ } else {
+ assert(rep->IsFlat());
+ CordRepFlat::Delete(rep);
+ return;
+ }
+ }
+}
+
+} // namespace cord_internal
+ABSL_NAMESPACE_END
+} // namespace absl