File: memmac.h

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/*
  mairix - message index builder and finder for maildir folders.

 **********************************************************************
 * Copyright (C) Richard P. Curnow  2002-2004
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 **********************************************************************
 */


#ifndef MEMMAC_H
#define MEMMAC_H

/*{{{ Safe alloc helpers (GCC extensions) */
extern void out_of_mem(char *file, int line, size_t size);

#undef TEST_OOM

#ifdef TEST_OOM
extern int total_bytes;
#endif

static __inline__ void* safe_malloc(char *file, int line, size_t s)/*{{{*/
{
  void *x = malloc(s);
#ifdef TEST_OOM
  total_bytes += s;
  if (total_bytes > 131072) x = NULL;
#endif
  if (!x) out_of_mem(file, line, s);
  return x;
}
/*}}}*/
static __inline__ void* safe_realloc(char *file, int line, void *old_ptr, size_t s)/*{{{*/
{
  void *x = realloc(old_ptr, s);
  if (!x) out_of_mem(file, line, s);
  return x;
}
/*}}}*/
#ifndef TEST
#define Malloc(s) safe_malloc(__FILE__, __LINE__, s)
#define Realloc(xx,s) safe_realloc(__FILE__, __LINE__,xx,s)
#else
#define Malloc(s) malloc(s)
#define Realloc(xx,s) realloc(xx,s)
#endif
/*}}}*/

/*{{{  Memory macros*/
#define new_string(s) strcpy((char *) Malloc(1+strlen(s)), (s))
#define extend_string(x,s) (strcat(Realloc(x, (strlen(x)+strlen(s)+1)), s))
#define new(T) (T *) Malloc(sizeof(T))
#define new_array(T, n) (T *) Malloc(sizeof(T) * (n))
#define grow_array(T, n, oldX) (T *) ((oldX) ? Realloc(oldX, (sizeof(T) * (n))) : Malloc(sizeof(T) * (n)))
#define EMPTY(x) {&(x), &(x)}
/*}}}*/

#endif /* MEMMAC_H */