vmport: convert to qdev
[qemu/mdroth.git] / qemu-malloc.c
blobb9b38514ac1ebb0cbb24d208da0c3c15d021c6a7
1 /*
2 * malloc-like functions for system emulation.
4 * Copyright (c) 2006 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 #include "qemu-common.h"
25 #include "trace.h"
26 #include <stdlib.h>
28 void qemu_free(void *ptr)
30 trace_qemu_free(ptr);
31 free(ptr);
34 static int allow_zero_malloc(void)
36 #if defined(CONFIG_ZERO_MALLOC)
37 return 1;
38 #else
39 return 0;
40 #endif
43 void *qemu_malloc(size_t size)
45 void *ptr;
46 if (!size && !allow_zero_malloc()) {
47 abort();
49 ptr = qemu_oom_check(malloc(size ? size : 1));
50 trace_qemu_malloc(size, ptr);
51 return ptr;
54 void *qemu_realloc(void *ptr, size_t size)
56 void *newptr;
57 if (!size && !allow_zero_malloc()) {
58 abort();
60 newptr = qemu_oom_check(realloc(ptr, size ? size : 1));
61 trace_qemu_realloc(ptr, size, newptr);
62 return newptr;
65 void *qemu_mallocz(size_t size)
67 void *ptr;
68 if (!size && !allow_zero_malloc()) {
69 abort();
71 ptr = qemu_oom_check(calloc(1, size ? size : 1));
72 trace_qemu_malloc(size, ptr);
73 return ptr;
76 char *qemu_strdup(const char *str)
78 char *ptr;
79 size_t len = strlen(str);
80 ptr = qemu_malloc(len + 1);
81 memcpy(ptr, str, len + 1);
82 return ptr;
85 char *qemu_strndup(const char *str, size_t size)
87 const char *end = memchr(str, 0, size);
88 char *new;
90 if (end) {
91 size = end - str;
94 new = qemu_malloc(size + 1);
95 new[size] = 0;
97 return memcpy(new, str, size);