upload android base code part3

android/bionic/libc/malloc_debug/TrackData.h

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef DEBUG_MALLOC_TRACKDATA_H
+#define DEBUG_MALLOC_TRACKDATA_H
+
+#include <stdint.h>
+#include <pthread.h>
+
+#include <vector>
+#include <unordered_set>
+
+#include <private/bionic_macros.h>
+
+#include "OptionData.h"
+
+// Forward declarations.
+struct Header;
+class Config;
+class DebugData;
+
+class TrackData : public OptionData {
+ public:
+  TrackData(DebugData* debug_data);
+  virtual ~TrackData() = default;
+
+  void GetList(std::vector<const Header*>* list);
+
+  void Add(const Header* header, bool backtrace_found);
+
+  void Remove(const Header* header, bool backtrace_found);
+
+  bool Contains(const Header *header);
+
+  void GetInfo(uint8_t** info, size_t* overall_size, size_t* info_size,
+               size_t* total_memory, size_t* backtrace_size);
+
+  void DisplayLeaks();
+
+  void PrepareFork() { pthread_mutex_lock(&mutex_); }
+  void PostForkParent() { pthread_mutex_unlock(&mutex_); }
+  void PostForkChild() { pthread_mutex_init(&mutex_, NULL); }
+
+ private:
+  pthread_mutex_t mutex_ = PTHREAD_MUTEX_INITIALIZER;
+  std::unordered_set<const Header*> headers_;
+  size_t total_backtrace_allocs_ = 0;
+
+  DISALLOW_COPY_AND_ASSIGN(TrackData);
+};
+
+#endif // DEBUG_MALLOC_TRACKDATA_H