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/*
* libusual - Utility library for C
*
* Copyright (c) 2007-2009 Marko Kreen, Skype Technologies OÜ
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <usual/cxalloc.h>
#include <usual/statlist.h>
#include <string.h>
/*
* Utility routines for cx_* API.
*/
void *cx_alloc(CxMem *cx, size_t len)
{
if (!len)
return NULL;
if (!cx)
cx = USUAL_ALLOC;
return cx->ops->c_alloc(cx->ctx, len);
}
void *cx_realloc(CxMem *cx, void *ptr, size_t len)
{
if (!cx)
cx = USUAL_ALLOC;
if (!ptr)
return cx_alloc(cx, len);
if (!len) {
cx_free(cx, ptr);
return NULL;
}
return cx->ops->c_realloc(cx->ctx, ptr, len);
}
void cx_free(CxMem *cx, const void *ptr)
{
if (!cx)
cx = USUAL_ALLOC;
if (ptr)
cx->ops->c_free(cx->ctx, ptr);
}
void cx_destroy(CxMem *cx)
{
if (!cx)
return;
if (!cx->ops->c_destroy)
abort();
cx->ops->c_destroy(cx->ctx);
}
void *cx_alloc0(CxMem *cx, size_t len)
{
void *p = cx_alloc(cx, len);
if (p)
memset(p, 0, len);
return p;
}
void *cx_memdup(CxMem *cx, const void *src, size_t len)
{
void *p = cx_alloc(cx, len);
if (p)
memcpy(p, src, len);
return p;
}
void *cx_strdup(CxMem *cx, const char *s)
{
return cx_memdup(cx, s, strlen(s) + 1);
}
/*
* Base allocator that uses libc routines.
*/
static void *libc_alloc(void *ctx, size_t len)
{
return malloc(len);
}
static void *libc_realloc(void *ctx, void *ptr, size_t len)
{
return realloc(ptr, len);
}
static void libc_free(void *ctx, const void *ptr)
{
free(ptr);
}
static const struct CxOps libc_alloc_ops = {
libc_alloc,
libc_realloc,
libc_free,
};
const struct CxMem cx_libc_allocator = {
&libc_alloc_ops,
NULL,
};
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