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-rw-r--r--scoped_allocator.hpp75
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diff --git a/scoped_allocator.hpp b/scoped_allocator.hpp
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-/**************************************************************************
- *
- * Copyright 2011 Jose Fonseca
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- **************************************************************************/
-
-
-#ifndef _SCOPED_ALLOCATOR_HPP_
-#define _SCOPED_ALLOCATOR_HPP_
-
-
-#include <stdlib.h>
-
-
-class scoped_allocator
-{
-private:
- void *next;
-
-public:
- scoped_allocator() : next(NULL) {
- }
-
- inline void *
- alloc(size_t size) {
- if (!size) {
- return NULL;
- }
-
- void * * buf = (void * *)malloc(sizeof(void *) + size);
- if (!buf) {
- return NULL;
- }
-
- *buf = next;
- next = buf;
-
- return &buf[1];
- }
-
- template< class T >
- inline void operator() (T * &ptr, size_t n = 1) {
- ptr = (T *)alloc(sizeof(T) * n);
- }
-
- inline ~scoped_allocator() {
- while (next) {
- void *temp = *(void **)next;
- free(next);
- next = temp;
- }
- }
-};
-
-
-#endif