1 /* 2 * Copyright (C) 2009 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 /* 30 * Contains declarations of types and constants used by malloc leak 31 * detection code in both, libc and libc_malloc_debug libraries. 32 */ 33 #ifndef MALLOC_DEBUG_COMMON_H 34 #define MALLOC_DEBUG_COMMON_H 35 36 #include <pthread.h> 37 #include <stdint.h> 38 #include <stdlib.h> 39 40 #include "private/bionic_config.h" 41 #include "private/libc_logging.h" 42 43 #define HASHTABLE_SIZE 1543 44 #define BACKTRACE_SIZE 32 45 /* flag definitions, currently sharing storage with "size" */ 46 #define SIZE_FLAG_ZYGOTE_CHILD (1<<31) 47 #define SIZE_FLAG_MASK (SIZE_FLAG_ZYGOTE_CHILD) 48 49 // This must match the alignment used by the malloc implementation. 50 #ifndef MALLOC_ALIGNMENT 51 #define MALLOC_ALIGNMENT ((size_t)(2 * sizeof(void *))) 52 #endif 53 54 // ============================================================================= 55 // Structures 56 // ============================================================================= 57 58 struct HashEntry { 59 size_t slot; 60 HashEntry* prev; 61 HashEntry* next; 62 size_t numEntries; 63 // fields above "size" are NOT sent to the host 64 size_t size; 65 size_t allocations; 66 uintptr_t backtrace[0]; 67 }; 68 69 struct HashTable { 70 pthread_mutex_t lock; 71 size_t count; 72 HashEntry* slots[HASHTABLE_SIZE]; 73 }; 74 75 /* Entry in malloc dispatch table. */ 76 typedef void* (*MallocDebugCalloc)(size_t, size_t); 77 typedef void (*MallocDebugFree)(void*); 78 typedef struct mallinfo (*MallocDebugMallinfo)(); 79 typedef void* (*MallocDebugMalloc)(size_t); 80 typedef size_t (*MallocDebugMallocUsableSize)(const void*); 81 typedef void* (*MallocDebugMemalign)(size_t, size_t); 82 typedef int (*MallocDebugPosixMemalign)(void**, size_t, size_t); 83 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS) 84 typedef void* (*MallocDebugPvalloc)(size_t); 85 #endif 86 typedef void* (*MallocDebugRealloc)(void*, size_t); 87 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS) 88 typedef void* (*MallocDebugValloc)(size_t); 89 #endif 90 91 struct MallocDebug { 92 MallocDebugCalloc calloc; 93 MallocDebugFree free; 94 MallocDebugMallinfo mallinfo; 95 MallocDebugMalloc malloc; 96 MallocDebugMallocUsableSize malloc_usable_size; 97 MallocDebugMemalign memalign; 98 MallocDebugPosixMemalign posix_memalign; 99 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS) 100 MallocDebugPvalloc pvalloc; 101 #endif 102 MallocDebugRealloc realloc; 103 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS) 104 MallocDebugValloc valloc; 105 #endif 106 }; 107 108 typedef bool (*MallocDebugInit)(HashTable*, const MallocDebug*); 109 typedef void (*MallocDebugFini)(int); 110 111 // ============================================================================= 112 // log functions 113 // ============================================================================= 114 115 #define debug_log(format, ...) \ 116 __libc_format_log(ANDROID_LOG_DEBUG, "malloc_leak_check", (format), ##__VA_ARGS__ ) 117 #define error_log(format, ...) \ 118 __libc_format_log(ANDROID_LOG_ERROR, "malloc_leak_check", (format), ##__VA_ARGS__ ) 119 #define info_log(format, ...) \ 120 __libc_format_log(ANDROID_LOG_INFO, "malloc_leak_check", (format), ##__VA_ARGS__ ) 121 122 #endif // MALLOC_DEBUG_COMMON_H 123