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/*
* malloc-like functions for system emulation.
*
* Copyright (c) 2006 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu-common.h"
#include "trace.h"
#include <stdlib.h>
static void *oom_check(void *ptr)
{
if (ptr == NULL) {
abort();
}
return ptr;
}
void qemu_free(void *ptr)
{
trace_qemu_free(ptr);
free(ptr);
}
static int allow_zero_malloc(void)
{
#if defined(CONFIG_ZERO_MALLOC)
return 1;
#else
return 0;
#endif
}
void *qemu_malloc(size_t size)
{
void *ptr;
if (!size && !allow_zero_malloc()) {
abort();
}
ptr = oom_check(malloc(size ? size : 1));
trace_qemu_malloc(size, ptr);
return ptr;
}
void *qemu_realloc(void *ptr, size_t size)
{
void *newptr;
if (!size && !allow_zero_malloc()) {
abort();
}
newptr = oom_check(realloc(ptr, size ? size : 1));
trace_qemu_realloc(ptr, size, newptr);
return newptr;
}
void *qemu_mallocz(size_t size)
{
if (!size && !allow_zero_malloc()) {
abort();
}
return oom_check(calloc(1, size ? size : 1));
}
char *qemu_strdup(const char *str)
{
char *ptr;
size_t len = strlen(str);
ptr = qemu_malloc(len + 1);
memcpy(ptr, str, len + 1);
return ptr;
}
char *qemu_strndup(const char *str, size_t size)
{
const char *end = memchr(str, 0, size);
char *new;
if (end) {
size = end - str;
}
new = qemu_malloc(size + 1);
new[size] = 0;
return memcpy(new, str, size);
}
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