code.delx.au - pulseaudio/blob - polyp/xmalloc.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   polypaudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with polypaudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <signal.h>
  28 #include <assert.h>
  29
  30 #include "memory.h"
  31 #include "util.h"
  32
  33 #define MAX_ALLOC_SIZE (1024*1024*20)
  34
  35 #undef malloc
  36 #undef free
  37 #undef realloc
  38 #undef strndup
  39 #undef strdup
  40
  41 static void oom(void) {
  42     static const char e[] = "Not enough memory\n";
  43     pa_loop_write(2, e, sizeof(e)-1);
  44     raise(SIGQUIT);
  45     exit(1);
  46 }
  47
  48 void* pa_xmalloc(size_t size) {
  49     void *p;
  50     assert(size > 0);
  51     assert(size < MAX_ALLOC_SIZE);
  52
  53     if (!(p = malloc(size)))
  54         oom();
  55
  56     return p;
  57 }
  58
  59 void* pa_xmalloc0(size_t size) {
  60     void *p;
  61     assert(size > 0);
  62     assert(size < MAX_ALLOC_SIZE);
  63
  64     if (!(p = calloc(1, size)))
  65         oom();
  66
  67     return p;
  68 }
  69
  70 void *pa_xrealloc(void *ptr, size_t size) {
  71     void *p;
  72     assert(size > 0);
  73     assert(size < MAX_ALLOC_SIZE);
  74
  75     if (!(p = realloc(ptr, size)))
  76         oom();
  77     return p;
  78 }
  79
  80 void* pa_xmemdup(const void *p, size_t l) {
  81     if (!p)
  82         return NULL;
  83     else {
  84         char *r = pa_xmalloc(l);
  85         memcpy(r, p, l);
  86         return r;
  87     }
  88 }
  89
  90 char *pa_xstrdup(const char *s) {
  91     if (!s)
  92         return NULL;
  93
  94     return pa_xmemdup(s, strlen(s)+1);
  95 }
  96
  97 char *pa_xstrndup(const char *s, size_t l) {
  98     if (!s)
  99         return NULL;
 100     else {
 101         char *r;
 102         size_t t = strlen(s);
 103
 104         if (t > l)
 105             t = l;
 106
 107         r = pa_xmemdup(s, t+1);
 108         r[t] = 0;
 109         return r;
 110     }
 111 }
 112