File:  [Qemu by Fabrice Bellard] / qemu / qemu-malloc.c
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:50:57 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

    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: #include <stdlib.h>
   26: 
   27: static void *oom_check(void *ptr)
   28: {
   29:     if (ptr == NULL)
   30:         abort();
   31:     return ptr;
   32: }
   33: 
   34: void *get_mmap_addr(unsigned long size)
   35: {
   36:     return NULL;
   37: }
   38: 
   39: void qemu_free(void *ptr)
   40: {
   41:     free(ptr);
   42: }
   43: 
   44: void *qemu_malloc(size_t size)
   45: {
   46:     return oom_check(malloc(size));
   47: }
   48: 
   49: void *qemu_realloc(void *ptr, size_t size)
   50: {
   51:     if (size)
   52:         return oom_check(realloc(ptr, size));
   53:     else
   54:         return realloc(ptr, size);
   55: }
   56: 
   57: void *qemu_mallocz(size_t size)
   58: {
   59:     void *ptr;
   60:     ptr = qemu_malloc(size);
   61:     memset(ptr, 0, size);
   62:     return ptr;
   63: }
   64: 
   65: char *qemu_strdup(const char *str)
   66: {
   67:     char *ptr;
   68:     size_t len = strlen(str);
   69:     ptr = qemu_malloc(len + 1);
   70:     memcpy(ptr, str, len + 1);
   71:     return ptr;
   72: }
   73: 
   74: char *qemu_strndup(const char *str, size_t size)
   75: {
   76:     const char *end = memchr(str, 0, size);
   77:     char *new;
   78: 
   79:     if (end)
   80:         size = end - str;
   81: 
   82:     new = qemu_malloc(size + 1);
   83:     new[size] = 0;
   84: 
   85:     return memcpy(new, str, size);
   86: }

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