From 7940e44f4517de5e2634a7e07d58d0fb26160513 Mon Sep 17 00:00:00 2001
From: Brian Carlstrom <bdc@google.com>
Date: Fri, 12 Jul 2013 13:46:57 -0700
Subject: Create separate Android.mk for main build targets

The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep.  They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.

Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81
---
 runtime/intern_table.h | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 runtime/intern_table.h

(limited to 'runtime/intern_table.h')

diff --git a/runtime/intern_table.h b/runtime/intern_table.h
new file mode 100644
index 0000000..1ff4f6d
--- /dev/null
+++ b/runtime/intern_table.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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
+ *
+ *      http://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.
+ */
+
+#ifndef ART_SRC_INTERN_TABLE_H_
+#define ART_SRC_INTERN_TABLE_H_
+
+#include "base/mutex.h"
+#include "root_visitor.h"
+
+#include <map>
+
+namespace art {
+namespace mirror {
+class String;
+}  // namespace mirror
+
+/**
+ * Used to intern strings.
+ *
+ * There are actually two tables: one that holds strong references to its strings, and one that
+ * holds weak references. The former is used for string literals, for which there is an effective
+ * reference from the constant pool. The latter is used for strings interned at runtime via
+ * String.intern. Some code (XML parsers being a prime example) relies on being able to intern
+ * arbitrarily many strings for the duration of a parse without permanently increasing the memory
+ * footprint.
+ */
+class InternTable {
+ public:
+  InternTable();
+
+  // Interns a potentially new string in the 'strong' table. (See above.)
+  mirror::String* InternStrong(int32_t utf16_length, const char* utf8_data)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Interns a potentially new string in the 'strong' table. (See above.)
+  mirror::String* InternStrong(const char* utf8_data)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Interns a potentially new string in the 'strong' table. (See above.)
+  mirror::String* InternStrong(mirror::String* s) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Interns a potentially new string in the 'weak' table. (See above.)
+  mirror::String* InternWeak(mirror::String* s) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  // Register a String trusting that it is safe to intern.
+  // Used when reinitializing InternTable from an image.
+  void RegisterStrong(mirror::String* s) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  void SweepInternTableWeaks(IsMarkedTester is_marked, void* arg)
+      SHARED_LOCKS_REQUIRED(Locks::heap_bitmap_lock_);
+
+  bool ContainsWeak(mirror::String* s) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  size_t Size() const;
+
+  void VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty);
+
+  void DumpForSigQuit(std::ostream& os) const;
+
+  bool IsDirty() const { return is_dirty_; }
+  void Dirty() {
+    is_dirty_ = true;
+  }
+
+ private:
+  typedef std::multimap<int32_t, mirror::String*> Table;
+
+  mirror::String* Insert(mirror::String* s, bool is_strong)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  mirror::String* Lookup(Table& table, mirror::String* s, uint32_t hash_code)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  mirror::String* Insert(Table& table, mirror::String* s, uint32_t hash_code);
+  void Remove(Table& table, const mirror::String* s, uint32_t hash_code);
+
+  mutable Mutex intern_table_lock_;
+  bool is_dirty_;
+  Table image_strong_interns_ GUARDED_BY(intern_table_lock_);
+  Table strong_interns_ GUARDED_BY(intern_table_lock_);
+  Table weak_interns_ GUARDED_BY(intern_table_lock_);
+};
+
+}  // namespace art
+
+#endif  // ART_SRC_CLASS_LINKER_H_
-- 
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