PGROUTING  2.5
pgr_alloc.hpp
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1 /*PGR-GNU*****************************************************************
2 File: pgr_palloc.hpp
3 
4 Copyright (c) 2015 Celia Virginia Vergara Castillo
5 Mail: vicky_vergara@hotmail.com
6 
7 ------
8 
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13 
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18 
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 
23 ********************************************************************PGR-GNU*/
24 
27 #ifndef INCLUDE_CPP_COMMON_PGR_ALLOC_HPP_
28 #define INCLUDE_CPP_COMMON_PGR_ALLOC_HPP_
29 #pragma once
30 
31 
32 #include <string>
33 #include <cstring>
34 
35 
36 extern "C" {
37 
38 extern
39 void* SPI_palloc(size_t size);
40 
41 extern void *
42 SPI_repalloc(void *pointer, size_t size);
43 
44 extern void
45 SPI_pfree(void *pointer);
46 
47 }
48 
49 
66 template <typename T>
67 T*
68 pgr_alloc(std::size_t size, T* ptr) {
69  if (!ptr) {
70  ptr = static_cast<T*>(SPI_palloc(size * sizeof(T)));
71  } else {
72  ptr = static_cast<T*>(SPI_repalloc(ptr, size * sizeof(T)));
73  }
74  return ptr;
75 }
76 
77 template <typename T>
78 T*
79 pgr_free(T* ptr) {
80  if (ptr) {
81  SPI_pfree(ptr);
82  }
83  return nullptr;
84 }
85 
86 char *
87 pgr_msg(const std::string &msg);
88 
89 #endif // INCLUDE_CPP_COMMON_PGR_ALLOC_HPP_
void SPI_pfree(void *pointer)
T * pgr_free(T *ptr)
Definition: pgr_alloc.hpp:79
void * SPI_palloc(size_t size)
void * SPI_repalloc(void *pointer, size_t size)
T * pgr_alloc(std::size_t size, T *ptr)
allocates memory
Definition: pgr_alloc.hpp:68
char * pgr_msg(const std::string &msg)
Definition: pgr_alloc.cpp:29