1 /****************************************************************************** 2 * 3 * Copyright 2014 Google, Inc. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 #include <base/logging.h> 19 #include <stdlib.h> 20 #include <string.h> 21 22 #include "osi/include/allocation_tracker.h" 23 #include "osi/include/allocator.h" 24 25 static const allocator_id_t alloc_allocator_id = 42; 26 27 char* osi_strdup(const char* str) { 28 size_t size = strlen(str) + 1; // + 1 for the null terminator 29 size_t real_size = allocation_tracker_resize_for_canary(size); 30 void* ptr = malloc(real_size); 31 CHECK(ptr); 32 33 char* new_string = static_cast<char*>( 34 allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size)); 35 if (!new_string) return NULL; 36 37 memcpy(new_string, str, size); 38 return new_string; 39 } 40 41 char* osi_strndup(const char* str, size_t len) { 42 size_t size = strlen(str); 43 if (len < size) size = len; 44 45 size_t real_size = allocation_tracker_resize_for_canary(size + 1); 46 void* ptr = malloc(real_size); 47 CHECK(ptr); 48 49 char* new_string = static_cast<char*>( 50 allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size + 1)); 51 if (!new_string) return NULL; 52 53 memcpy(new_string, str, size); 54 new_string[size] = '\0'; 55 return new_string; 56 } 57 58 void* osi_malloc(size_t size) { 59 size_t real_size = allocation_tracker_resize_for_canary(size); 60 void* ptr = malloc(real_size); 61 CHECK(ptr); 62 return allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size); 63 } 64 65 void* osi_calloc(size_t size) { 66 size_t real_size = allocation_tracker_resize_for_canary(size); 67 void* ptr = calloc(1, real_size); 68 CHECK(ptr); 69 return allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size); 70 } 71 72 void osi_free(void* ptr) { 73 free(allocation_tracker_notify_free(alloc_allocator_id, ptr)); 74 } 75 76 void osi_free_and_reset(void** p_ptr) { 77 CHECK(p_ptr != NULL); 78 osi_free(*p_ptr); 79 *p_ptr = NULL; 80 } 81 82 const allocator_t allocator_calloc = {osi_calloc, osi_free}; 83 84 const allocator_t allocator_malloc = {osi_malloc, osi_free}; 85
