code.delx.au - pulseaudio/blob - src/pulse/xmalloc.h

   1 #ifndef foomemoryhfoo
   2 #define foomemoryhfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10
  11   PulseAudio is free software; you can redistribute it and/or modify
  12   it under the terms of the GNU Lesser General Public License as published
  13   by the Free Software Foundation; either version 2 of the License,
  14   or (at your option) any later version.
  15
  16   PulseAudio is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU Lesser General Public License
  22   along with PulseAudio; if not, write to the Free Software
  23   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  24   USA.
  25 ***/
  26
  27 #include <sys/types.h>
  28 #include <stdlib.h>
  29 #include <limits.h>
  30 #include <assert.h>
  31 #include <pulse/cdecl.h>
  32
  33 /** \file
  34  * Memory allocation functions.
  35  */
  36
  37 PA_C_DECL_BEGIN
  38
  39 /** Allocate the specified number of bytes, just like malloc() does. However, in case of OOM, terminate */
  40 void* pa_xmalloc(size_t l);
  41
  42 /** Same as pa_xmalloc(), but initialize allocated memory to 0 */
  43 void *pa_xmalloc0(size_t l);
  44
  45 /**  The combination of pa_xmalloc() and realloc() */
  46 void *pa_xrealloc(void *ptr, size_t size);
  47
  48 /** Free allocated memory */
  49 void pa_xfree(void *p);
  50
  51 /** Duplicate the specified string, allocating memory with pa_xmalloc() */
  52 char *pa_xstrdup(const char *s);
  53
  54 /** Duplicate the specified string, but truncate after l characters */
  55 char *pa_xstrndup(const char *s, size_t l);
  56
  57 /** Duplicate the specified memory block */
  58 void* pa_xmemdup(const void *p, size_t l);
  59
  60 /** Internal helper for pa_xnew() */
  61 static inline void* pa_xnew_internal(unsigned n, size_t k) {
  62     assert(n < INT_MAX/k);
  63     return pa_xmalloc(n*k);
  64 }
  65
  66 /** Allocate n new structures of the specified type. */
  67 #define pa_xnew(type, n) ((type*) pa_xnew_internal((n), sizeof(type)))
  68
  69 /** Internal helper for pa_xnew0() */
  70 static inline void* pa_xnew0_internal(unsigned n, size_t k) {
  71     assert(n < INT_MAX/k);
  72     return pa_xmalloc0(n*k);
  73 }
  74
  75 /** Same as pa_xnew() but set the memory to zero */
  76 #define pa_xnew0(type, n) ((type*) pa_xnew0_internal((n), sizeof(type)))
  77
  78 /** Internal helper for pa_xnew0() */
  79 static inline void* pa_xnewdup_internal(const void *p, unsigned n, size_t k) {
  80     assert(n < INT_MAX/k);
  81     return pa_xmemdup(p, n*k);
  82 }
  83
  84 /** Same as pa_xnew() but set the memory to zero */
  85 #define pa_xnewdup(type, p, n) ((type*) pa_xnewdup_internal((p), (n), sizeof(type)))
  86
  87 PA_C_DECL_END
  88
  89 #endif