1 /* toolbox/memory.h - macros for memory management
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
5 M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
6 P. Tomsich, J. Wenninger
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Reinhard Grafl
29 $Id: memory.h 557 2003-11-02 22:51:59Z twisti $
39 /* Uncollectable memory which can contain references */
40 void *heap_alloc_uncollectable(u4 bytelen);
41 #define GCNEW(type,num) heap_alloc_uncollectable(sizeof(type) * (num))
43 #define ALIGN(pos,size) ((((pos) + (size) - 1) / (size)) * (size))
44 #define PADDING(pos,size) (ALIGN((pos),(size)) - (pos))
45 #define OFFSET(s,el) ((int) ((size_t) & (((s*) 0)->el)))
48 #define NEW(type) ((type*) mem_alloc(sizeof(type)))
49 #define FREE(ptr,type) mem_free(ptr, sizeof(type))
51 #define LNEW(type) ((type*) lit_mem_alloc(sizeof(type)))
52 #define LFREE(ptr,type) lit_mem_free(ptr, sizeof(type))
54 #define MNEW(type,num) ((type*) mem_alloc(sizeof(type) * (num)))
55 #define MFREE(ptr,type,num) mem_free(ptr, sizeof(type) * (num))
56 #define MREALLOC(ptr,type,num1,num2) mem_realloc(ptr, sizeof(type) * (num1), \
57 sizeof(type) * (num2))
59 #define DNEW(type) ((type*) dump_alloc(sizeof(type)))
60 #define DMNEW(type,num) ((type*) dump_alloc(sizeof(type) * (num)))
61 #define DMREALLOC(ptr,type,num1,num2) dump_realloc(ptr, sizeof(type) * (num1),\
62 sizeof(type) * (num2))
64 #define MCOPY(dest,src,type,num) memcpy(dest,src, sizeof(type)* (num))
67 #define CNEW(type,num) ((type*) mem_mmap( sizeof(type) * (num)))
68 #define CFREE(ptr,num)
70 #define CNEW(type,num) ((type*) mem_alloc(sizeof(type) * (num)))
71 #define CFREE(ptr,num) mem_free(ptr, num)
75 void *mem_alloc(int length);
76 void *mem_mmap(int length);
77 void *lit_mem_alloc(int length);
78 void mem_free(void *m, int length);
79 void lit_mem_free(void *m, int length);
80 void *mem_realloc(void *m, int len1, int len2);
83 void *dump_alloc(int length);
84 void *dump_realloc(void *m, int len1, int len2);
86 void dump_release(long int size);
88 void mem_usagelog(int givewarnings);
93 ---------------------------- Interface description -----------------------
95 There are two possible choices for allocating memory:
97 1. explicit allocating / deallocating
99 mem_alloc ..... allocate a memory block
100 mem_free ...... free a memory block
101 mem_realloc ... change size of a memory block (position may change)
102 mem_usage ..... amount of allocated memory
105 2. explicit allocating, automatic deallocating
107 dump_alloc .... allocate a memory block in the dump area
108 dump_realloc .. change size of a memory block (position may change)
109 dump_size ..... marks the current top of dump
110 dump_release .. free all memory requested after the mark
113 There are some useful macros:
115 NEW (type) ....... allocate memory for an element of type `type`
116 FREE (ptr,type) .. free memory
118 MNEW (type,num) .. allocate memory for an array
119 MFREE (ptr,type,num) .. free memory
121 MREALLOC (ptr,type,num1,num2) .. enlarge the array to size num2
123 These macros do the same except they operate on the dump area:
125 DNEW, DMNEW, DMREALLOC (there is no DFREE)
128 -------------------------------------------------------------------------------
132 ALIGN (pos, size) ... make pos divisible by size. always returns an
136 OFFSET (s,el) ....... returns the offset of 'el' in structure 's' in bytes.
138 MCOPY (dest,src,type,num) ... copy 'num' elements of type 'type'.
143 #endif /* _MEMORY_H */
147 * These are local overrides for various environment variables in Emacs.
148 * Please do not remove this and leave it at the end of the file, where
149 * Emacs will automagically detect them.
150 * ---------------------------------------------------------------------
153 * indent-tabs-mode: t