obs-studio/libobs/util/bmem.h

/******************************************************************************
  Copyright (c) 2013 by Hugh Bailey <obs.jim@gmail.com>

  This software is provided 'as-is', without any express or implied
  warranty. In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

     1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.

     2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.

     3. This notice may not be removed or altered from any source
     distribution.
******************************************************************************/

#pragma once

#include "c99defs.h"
#include "base.h"
#include <wchar.h>
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

struct base_allocator {
	void *(*malloc)(size_t);
	void *(*realloc)(void *, size_t);
	void (*free)(void *);
};

EXPORT void base_set_allocator(struct base_allocator *defs);

EXPORT void *bmalloc(size_t size);
EXPORT void *brealloc(void *ptr, size_t size);
EXPORT void bfree(void *ptr);

EXPORT uint64_t bnum_allocs(void);

EXPORT void *bmemdup(const void *ptr, size_t size);

static inline char *bstrdup_n(const char *str, size_t n)
{
	char *dup;
	if (!str || !*str)
		return NULL;

	dup = (char*)bmemdup(str, n+1);
	dup[n] = 0;

	return dup;
}

static inline wchar_t *bwstrdup_n(const wchar_t *str, size_t n)
{
	wchar_t *dup;
	if (!str || !*str)
		return NULL;

	dup = (wchar_t*)bmemdup(str, (n+1) * sizeof(wchar_t));
	dup[n] = 0;

	return dup;
}

static inline char *bstrdup(const char *str)
{
	if (!str)
		return NULL;

	return bstrdup_n(str, strlen(str));
}

static inline wchar_t *bwstrdup(const wchar_t *str)
{
	if (!str)
		return NULL;

	return bwstrdup_n(str, wcslen(str));
}

#ifdef __cplusplus
}
#endif