1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBMEMUNREACHABLE_MEMUNREACHABLE_H_ 18 #define LIBMEMUNREACHABLE_MEMUNREACHABLE_H_ 19 20 #include <sys/cdefs.h> 21 22 #ifdef __cplusplus 23 24 #include <vector> 25 #include <string> 26 27 struct Leak { 28 uintptr_t begin; 29 size_t size; 30 31 size_t referenced_count; 32 size_t referenced_size; 33 34 size_t similar_count; 35 size_t similar_size; 36 size_t similar_referenced_count; 37 size_t similar_referenced_size; 38 39 size_t total_size; 40 41 static const size_t contents_length = 32; 42 char contents[contents_length]; 43 44 struct Backtrace { 45 size_t num_frames; 46 47 static const size_t max_frames = 16; 48 uintptr_t frames[max_frames]; 49 } backtrace; 50 51 std::string ToString(bool log_contents) const; 52 }; 53 54 struct UnreachableMemoryInfo { 55 std::vector<Leak> leaks; 56 size_t num_leaks; 57 size_t leak_bytes; 58 size_t num_allocations; 59 size_t allocation_bytes; 60 61 UnreachableMemoryInfo() {} 62 ~UnreachableMemoryInfo() { 63 // Clear the memory that holds the leaks, otherwise the next attempt to 64 // detect leaks may find the old data (for example in the jemalloc tcache) 65 // and consider all the leaks to be referenced. 66 memset(leaks.data(), 0, leaks.capacity() * sizeof(Leak)); 67 } 68 69 std::string ToString(bool log_contents) const; 70 }; 71 72 bool GetUnreachableMemory(UnreachableMemoryInfo& info, size_t limit = 100); 73 74 std::string GetUnreachableMemoryString(bool log_contents = false, size_t limit = 100); 75 76 #endif 77 78 __BEGIN_DECLS 79 80 bool LogUnreachableMemory(bool log_contents, size_t limit); 81 82 bool NoLeaks(); 83 84 __END_DECLS 85 86 #endif // LIBMEMUNREACHABLE_MEMUNREACHABLE_H_ 87
