1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 #include <pthread.h> 32 #include <signal.h> 33 #include <stdint.h> 34 #include <unistd.h> 35 36 #include <atomic> 37 #include <memory> 38 #include <mutex> 39 #include <string> 40 #include <vector> 41 42 #include <memory_trace/MemoryTrace.h> 43 #include <platform/bionic/macros.h> 44 45 class Config; 46 47 class RecordData { 48 public: 49 RecordData(); 50 virtual ~RecordData(); 51 52 bool Initialize(const Config& config); 53 54 memory_trace::Entry* ReserveEntry(); 55 file()56 const std::string& file() { return file_; } key()57 pthread_key_t key() { return key_; } 58 59 int64_t GetPresentBytes(void* pointer, size_t size); 60 61 static void WriteEntriesOnExit(); 62 63 private: 64 static void WriteData(int, siginfo_t*, void*); 65 static RecordData* record_obj_; 66 67 static void ThreadKeyDelete(void* data); 68 69 void WriteEntries(); 70 void WriteEntries(const std::string& file); 71 72 memory_trace::Entry* InternalReserveEntry(); 73 74 std::mutex entries_lock_; 75 pthread_key_t key_; 76 std::vector<memory_trace::Entry> entries_; 77 size_t cur_index_; 78 std::string file_; 79 int pagemap_fd_ = -1; 80 81 BIONIC_DISALLOW_COPY_AND_ASSIGN(RecordData); 82 }; 83