Annotation of qemu/qemu-malloc.c, revision 1.1.1.5

1.1       root        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"
1.1.1.5 ! root       25: #include "trace.h"
1.1       root       26: #include <stdlib.h>
                     27: 
                     28: void qemu_free(void *ptr)
                     29: {
1.1.1.5 ! root       30:     trace_qemu_free(ptr);
1.1       root       31:     free(ptr);
                     32: }
                     33: 
1.1.1.3   root       34: static int allow_zero_malloc(void)
                     35: {
                     36: #if defined(CONFIG_ZERO_MALLOC)
                     37:     return 1;
                     38: #else
                     39:     return 0;
                     40: #endif
                     41: }
                     42: 
1.1       root       43: void *qemu_malloc(size_t size)
                     44: {
1.1.1.5 ! root       45:     void *ptr;
1.1.1.3   root       46:     if (!size && !allow_zero_malloc()) {
1.1.1.2   root       47:         abort();
                     48:     }
1.1.1.5 ! root       49:     ptr = qemu_oom_check(malloc(size ? size : 1));
        !            50:     trace_qemu_malloc(size, ptr);
        !            51:     return ptr;
1.1       root       52: }
                     53: 
                     54: void *qemu_realloc(void *ptr, size_t size)
                     55: {
1.1.1.5 ! root       56:     void *newptr;
1.1.1.4   root       57:     if (!size && !allow_zero_malloc()) {
                     58:         abort();
1.1.1.2   root       59:     }
1.1.1.5 ! root       60:     newptr = qemu_oom_check(realloc(ptr, size ? size : 1));
        !            61:     trace_qemu_realloc(ptr, size, newptr);
        !            62:     return newptr;
1.1       root       63: }
                     64: 
                     65: void *qemu_mallocz(size_t size)
                     66: {
1.1.1.5 ! root       67:     void *ptr;
1.1.1.4   root       68:     if (!size && !allow_zero_malloc()) {
                     69:         abort();
                     70:     }
1.1.1.5 ! root       71:     ptr = qemu_oom_check(calloc(1, size ? size : 1));
        !            72:     trace_qemu_malloc(size, ptr);
        !            73:     return ptr;
1.1       root       74: }
                     75: 
                     76: char *qemu_strdup(const char *str)
                     77: {
                     78:     char *ptr;
                     79:     size_t len = strlen(str);
                     80:     ptr = qemu_malloc(len + 1);
                     81:     memcpy(ptr, str, len + 1);
                     82:     return ptr;
                     83: }
                     84: 
                     85: char *qemu_strndup(const char *str, size_t size)
                     86: {
                     87:     const char *end = memchr(str, 0, size);
                     88:     char *new;
                     89: 
1.1.1.2   root       90:     if (end) {
1.1       root       91:         size = end - str;
1.1.1.2   root       92:     }
1.1       root       93: 
                     94:     new = qemu_malloc(size + 1);
                     95:     new[size] = 0;
                     96: 
                     97:     return memcpy(new, str, size);
                     98: }

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