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 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #define HASHTABLE_SIZE 1543 41 #define BACKTRACE_SIZE 32 42 /* flag definitions, currently sharing storage with "size" */ 43 #define SIZE_FLAG_ZYGOTE_CHILD (1<<31) 44 #define SIZE_FLAG_MASK (SIZE_FLAG_ZYGOTE_CHILD) 45 46 #define MAX_SIZE_T (~(size_t)0) 47 48 // ============================================================================= 49 // Structures 50 // ============================================================================= 51 52 typedef struct HashEntry HashEntry; 53 struct HashEntry { 54 size_t slot; 55 HashEntry* prev; 56 HashEntry* next; 57 size_t numEntries; 58 // fields above "size" are NOT sent to the host 59 size_t size; 60 size_t allocations; 61 intptr_t backtrace[0]; 62 }; 63 64 typedef struct HashTable HashTable; 65 struct HashTable { 66 size_t count; 67 HashEntry* slots[HASHTABLE_SIZE]; 68 }; 69 70 /* Entry in malloc dispatch table. */ 71 typedef struct MallocDebug MallocDebug; 72 struct MallocDebug { 73 /* Address of the actual malloc routine. */ 74 void* (*malloc)(size_t bytes); 75 /* Address of the actual free routine. */ 76 void (*free)(void* mem); 77 /* Address of the actual calloc routine. */ 78 void* (*calloc)(size_t n_elements, size_t elem_size); 79 /* Address of the actual realloc routine. */ 80 void* (*realloc)(void* oldMem, size_t bytes); 81 /* Address of the actual memalign routine. */ 82 void* (*memalign)(size_t alignment, size_t bytes); 83 }; 84 85 /* Malloc debugging initialization routine. 86 * This routine must be implemented in .so modules that implement malloc 87 * debugging. This routine is called once per process from malloc_init_impl 88 * routine implemented in bionic/libc/bionic/malloc_debug_common.c when malloc 89 * debugging gets initialized for the process. 90 * Return: 91 * 0 on success, -1 on failure. 92 */ 93 typedef int (*MallocDebugInit)(void); 94 95 #ifdef __cplusplus 96 }; /* end of extern "C" */ 97 #endif 98 99 #endif // MALLOC_DEBUG_COMMON_H 100
