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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/sketch/memutil.h
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+/* memutil.h
+ Copyright (C) 2005,2006,2007 Eugene K. Ressler, Jr.
+
+This file is part of Sketch, a small, simple system for making
+3d drawings with LaTeX and the PSTricks or TikZ package.
+
+Sketch is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+Sketch is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Sketch; see the file COPYING.txt. If not, see
+http://www.gnu.org/copyleft */
+
+#ifndef __MEMUTIL_H
+#define __MEMUTIL_H
+
+#include <stdlib.h>
+#include <string.h>
+
+// booleans
+typedef int bool;
+
+// bit N
+#define bit(N) (1u << (N))
+
+// size of a static or auto declared array
+#define ARRAY_SIZE(A) (sizeof (A) / sizeof (A)[0])
+
+// zero the memory of struct at *P to zero
+#define SET_STRUCT_ZERO(P) memset((P), 0, sizeof *(P))
+
+// zero the array A to zero
+#define SET_ARRAY_ZERO(A) memset((A), 0, sizeof (A))
+
+// checking memory allocators
+void *safe_malloc (unsigned size);
+void *safe_realloc (void *p, unsigned size);
+char *safe_strdup (char *str);
+void safe_free (void *p);
+
+#define MALLOC_STRUCT(P) (P) = safe_malloc(sizeof *(P))
+
+// deliberately cause compilation errors if caller uses
+// system memory routines
+#ifdef _DEBUG
+#define malloc(N) __call_safe_malloc_instead()
+#define realloc(P,N) __call_safe_alloc_instead()
+#define strdup(S) __call_safe_alloc_instead()
+#define free(P) __call_safe_free_instead()
+#endif
+
+#endif