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/* xbt/sysdep.h -- all system dependency */
/* no system header should be loaded out of this file so that we have only */
/* one file to check when porting to another OS */
/* Copyright (c) 2004-2025. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#ifndef XBT_SYSDEP_H
#define XBT_SYSDEP_H
#include <xbt/asserts.h>
#include <xbt/log.h>
#include <simgrid/config.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h> /* va_list */
SG_BEGIN_DECL
#ifdef XBT_LOG_LOCALLY_DEFINE_XBT_CHANNEL
XBT_LOG_NEW_CATEGORY(xbt, "All XBT categories (SimGrid toolbox)");
XBT_LOG_NEW_SUBCATEGORY(xbt_help, xbt, "Help messages");
#else
XBT_LOG_EXTERNAL_CATEGORY(xbt);
XBT_LOG_EXTERNAL_CATEGORY(xbt_help);
#endif
/** @addtogroup XBT_syscall
* @brief Malloc and associated functions, killing the program on error (with @ref XBT_ex)
*
* @{
*/
/** @brief Like strdup, but xbt_die() on error */
static XBT_ALWAYS_INLINE char *xbt_strdup(const char *s) {
char *res = NULL;
if (s) {
res = strdup(s);
xbt_assert(res, "memory allocation error (strdup returned NULL)");
}
return res;
}
/** @brief Like malloc, but xbt_die() on error
@hideinitializer */
static XBT_ALWAYS_INLINE void *xbt_malloc(size_t n) {
void* res = malloc(n);
xbt_assert(res, "Memory allocation of %lu bytes failed", (unsigned long)n);
return res;
}
/** @brief like malloc, but xbt_die() on error and memset data to 0
@hideinitializer */
static XBT_ALWAYS_INLINE void *xbt_malloc0(size_t n) {
void* res = calloc(n, 1);
xbt_assert(res, "Memory callocation of %lu bytes failed", (unsigned long)n);
return res;
}
/** @brief like realloc, but xbt_die() on error
@hideinitializer */
static XBT_ALWAYS_INLINE void *xbt_realloc(void *p, size_t s) {
void *res = NULL;
if (s) {
if (p) {
res = realloc(p, s);
xbt_assert(res, "memory (re)allocation of %lu bytes failed", (unsigned long)s);
} else {
res = xbt_malloc(s);
}
} else {
free(p);
}
return res;
}
/** @brief like free */
#define xbt_free(p) free(p) /*nothing specific to do here. A poor valgrind replacement? */
#ifdef __cplusplus
#define XBT_FREE_NOEXCEPT noexcept(noexcept(::free))
#else
#define XBT_FREE_NOEXCEPT
#endif
/** @brief like free, but you can be sure that it is a function */
XBT_PUBLIC void xbt_free_f(void* p) XBT_FREE_NOEXCEPT;
/** @brief should be given a pointer to pointer, and frees the second one */
XBT_PUBLIC void xbt_free_ref(void* d) XBT_FREE_NOEXCEPT;
SG_END_DECL
#define xbt_new(type, count) ((type*)xbt_malloc (sizeof (type) * (count)))
/** @brief like calloc, but xbt_die() on error
@hideinitializer */
#define xbt_new0(type, count) ((type*)xbt_malloc0 (sizeof (type) * (count)))
/** @} */
#endif /* XBT_SYSDEP_H */
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