1 /* 2 * Copyright (C) 2015 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 #ifndef MALLOC_DEBUG_CONFIG_H 30 #define MALLOC_DEBUG_CONFIG_H 31 32 #include <stdint.h> 33 34 constexpr uint64_t FRONT_GUARD = 0x1; 35 constexpr uint64_t REAR_GUARD = 0x2; 36 constexpr uint64_t BACKTRACE = 0x4; 37 constexpr uint64_t FILL_ON_ALLOC = 0x8; 38 constexpr uint64_t FILL_ON_FREE = 0x10; 39 constexpr uint64_t EXPAND_ALLOC = 0x20; 40 constexpr uint64_t FREE_TRACK = 0x40; 41 constexpr uint64_t TRACK_ALLOCS = 0x80; 42 constexpr uint64_t LEAK_TRACK = 0x100; 43 44 // In order to guarantee posix compliance, set the minimum alignment 45 // to 8 bytes for 32 bit systems and 16 bytes for 64 bit systems. 46 #if defined(__LP64__) 47 constexpr size_t MINIMUM_ALIGNMENT_BYTES = 16; 48 #else 49 constexpr size_t MINIMUM_ALIGNMENT_BYTES = 8; 50 #endif 51 52 // If only one or more of these options is set, then no special header is needed. 53 constexpr uint64_t NO_HEADER_OPTIONS = FILL_ON_ALLOC | FILL_ON_FREE | EXPAND_ALLOC; 54 55 struct Config { 56 bool SetFromProperties(); 57 58 size_t front_guard_bytes = 0; 59 size_t rear_guard_bytes = 0; 60 61 bool backtrace_enable_on_signal = false; 62 int backtrace_signal = 0; 63 bool backtrace_enabled = false; 64 size_t backtrace_frames = 0; 65 66 size_t fill_on_alloc_bytes = 0; 67 size_t fill_on_free_bytes = 0; 68 69 size_t expand_alloc_bytes = 0; 70 71 size_t free_track_allocations = 0; 72 size_t free_track_backtrace_num_frames = 0; 73 74 uint64_t options = 0; 75 uint8_t fill_alloc_value; 76 uint8_t fill_free_value; 77 uint8_t front_guard_value; 78 uint8_t rear_guard_value; 79 }; 80 81 #endif // MALLOC_DEBUG_CONFIG_H 82