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/******************************************************************************
*
* Copyright 2014 Google, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#include <base/logging.h>
#include <stdlib.h>
#include <string.h>
#include "check.h"
#include "osi/include/allocation_tracker.h"
#include "osi/include/allocator.h"
static const allocator_id_t alloc_allocator_id = 42;
char* osi_strdup(const char* str) {
size_t size = strlen(str) + 1; // + 1 for the null terminator
size_t real_size = allocation_tracker_resize_for_canary(size);
void* ptr = malloc(real_size);
CHECK(ptr);
char* new_string = static_cast<char*>(
allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size));
if (!new_string) return NULL;
memcpy(new_string, str, size);
return new_string;
}
char* osi_strndup(const char* str, size_t len) {
size_t size = strlen(str);
if (len < size) size = len;
size_t real_size = allocation_tracker_resize_for_canary(size + 1);
void* ptr = malloc(real_size);
CHECK(ptr);
char* new_string = static_cast<char*>(
allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size + 1));
if (!new_string) return NULL;
memcpy(new_string, str, size);
new_string[size] = '\0';
return new_string;
}
void* osi_malloc(size_t size) {
CHECK(static_cast<ssize_t>(size) >= 0);
size_t real_size = allocation_tracker_resize_for_canary(size);
void* ptr = malloc(real_size);
CHECK(ptr);
return allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size);
}
void* osi_calloc(size_t size) {
CHECK(static_cast<ssize_t>(size) >= 0);
size_t real_size = allocation_tracker_resize_for_canary(size);
void* ptr = calloc(1, real_size);
CHECK(ptr);
return allocation_tracker_notify_alloc(alloc_allocator_id, ptr, size);
}
void osi_free(void* ptr) {
free(allocation_tracker_notify_free(alloc_allocator_id, ptr));
}
void osi_free_and_reset(void** p_ptr) {
CHECK(p_ptr != NULL);
osi_free(*p_ptr);
*p_ptr = NULL;
}
const allocator_t allocator_calloc = {osi_calloc, osi_free};
const allocator_t allocator_malloc = {osi_malloc, osi_free};
OsiObject::OsiObject(void* ptr) : ptr_(ptr) {}
OsiObject::OsiObject(const void* ptr) : ptr_(const_cast<void*>(ptr)) {}
OsiObject::~OsiObject() {
if (ptr_ != nullptr) {
osi_free(ptr_);
}
}
void* OsiObject::Release() {
void* ptr = ptr_;
ptr_ = nullptr;
return ptr;
}
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