qemu-malloc.c

   1 /*
   2  * malloc-like functions for system emulation.
   3  *
   4  * Copyright (c) 2006 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu-common.h"
  25
  26 void *get_mmap_addr(unsigned long size)
  27 {
  28     return NULL;
  29 }
  30
  31 void qemu_free(void *ptr)
  32 {
  33     free(ptr);
  34 }
  35
  36 void *qemu_malloc(size_t size)
  37 {
  38     return malloc(size);
  39 }
  40
  41 void *qemu_realloc(void *ptr, size_t size)
  42 {
  43     return realloc(ptr, size);
  44 }
  45
  46 void *qemu_mallocz(size_t size)
  47 {
  48     void *ptr;
  49     ptr = qemu_malloc(size);
  50     if (!ptr)
  51         return NULL;
  52     memset(ptr, 0, size);
  53     return ptr;
  54 }
  55
  56 char *qemu_strdup(const char *str)
  57 {
  58     char *ptr;
  59     size_t len = strlen(str);
  60     ptr = qemu_malloc(len + 1);
  61     if (!ptr)
  62         return NULL;
  63     memcpy(ptr, str, len + 1);
  64     return ptr;
  65 }
  66
  67 char *qemu_strndup(const char *str, size_t size)
  68 {
  69     const char *end = memchr(str, 0, size);
  70     char *new;
  71
  72     if (end)
  73         size = end - str;
  74
  75     new = qemu_malloc(size + 1);
  76     new[size] = 0;
  77
  78     return memcpy(new, str, size);
  79 }