1 /* xbt/sysdep.h -- all system dependency */
2 /* no system header should be loaded out of this file so that we have only */
3 /* one file to check when porting to another OS */
5 /* Copyright (c) 2004-2015. The SimGrid Team.
6 * All rights reserved. */
8 /* This program is free software; you can redistribute it and/or modify it
9 * under the terms of the license (GNU LGPL) which comes with this package. */
15 #include <type_traits>
20 #include "xbt/asserts.h"
22 #include "simgrid_config.h"
28 #include <stdarg.h> /* va_list */
30 /* They live in asserts.h, but need to be declared before this module.
31 double declaration to cut dependency cycle */
33 * @addtogroup XBT_error
37 /** @brief Kill the program in silence */
38 XBT_PUBLIC(void) xbt_abort(void) _XBT_GNUC_NORETURN;
41 * @brief Kill the program with an error message
42 * \param ... a format string and its arguments
44 * Things are so messed up that the only thing to do now, is to stop the
47 * The message is handled by a CRITICAL logging request, and may consist of a
48 * format string with arguments.
50 #define xbt_die(...) \
52 XBT_CCRITICAL(xbt, __VA_ARGS__); \
57 XBT_LOG_EXTERNAL_CATEGORY(xbt);
59 /* these ones live in str.h, but redeclare them here so that we do
60 not need to load the whole str.h and its heavy dependencies */
61 #ifndef __USE_GNU /* do not redeclare existing headers */
62 XBT_PUBLIC(int) asprintf(char **ptr, const char *fmt, /*args */
63 ...) _XBT_GNUC_PRINTF(2, 3);
64 XBT_PUBLIC(int) vasprintf(char **ptr, const char *fmt, va_list ap);
66 XBT_PUBLIC(char *) bprintf(const char *fmt, ...) _XBT_GNUC_PRINTF(1, 2);
68 /** @addtogroup XBT_syscall
69 * @brief Malloc and associated functions, killing the program on error (with \ref XBT_ex)
74 #ifdef _MSC_VER /* Microsoft wants to improve the code quality blah blah blah */
75 /* See: https://msdn.microsoft.com/en-us/library/8ef0s5kh.aspx */
77 /* warning C4996: '_strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. */
78 # define _CRT_NONSTDC_NO_WARNINGS
79 # define strdup _strdup
80 /* warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. */
81 # define _CRT_SECURE_NO_WARNINGS
84 /** @brief Like strdup, but xbt_die() on error */
85 static XBT_ALWAYS_INLINE char *xbt_strdup(const char *s) {
90 xbt_die("memory allocation error (strdup returned NULL)");
95 XBT_PUBLIC(void) xbt_backtrace_display_current(void);
97 /** @brief Like malloc, but xbt_die() on error
99 static XBT_ALWAYS_INLINE void *xbt_malloc(size_t n) {
102 xbt_backtrace_display_current();
103 xbt_die("malloc(0) is not portable");
108 xbt_die("Memory allocation of %lu bytes failed", (unsigned long)n);
112 /** @brief like malloc, but xbt_die() on error and memset data to 0
114 static XBT_ALWAYS_INLINE void *xbt_malloc0(size_t n) {
116 //if (n==0) xbt_die("calloc(0) is not portable");
119 xbt_die("Memory callocation of %lu bytes failed", (unsigned long)n);
123 /** @brief like realloc, but xbt_die() on error
125 static XBT_ALWAYS_INLINE void *xbt_realloc(void *p, size_t s) {
127 //if (s==0) xbt_die("realloc(0) is not portable");
132 xbt_die("memory (re)allocation of %lu bytes failed", (unsigned long)s);
144 #define xbt_free(p) free(p) /*nothing specific to do here. A poor valgrind replacement? */
146 /** @brief like free, but you can be sure that it is a function */
147 XBT_PUBLIC(void) xbt_free_f(void *p);
148 /** @brief should be given a pointer to pointer, and frees the second one */
149 XBT_PUBLIC(void) xbt_free_ref(void *d);
153 /** @brief like calloc, but xbt_die() on error and don't memset to 0
157 #define xbt_new(type, count) ((type*)xbt_malloc (sizeof (type) * (count)))
158 /** @brief like calloc, but xbt_die() on error
160 #define xbt_new0(type, count) ((type*)xbt_malloc0 (sizeof (type) * (count)))
164 /** C++ wrapper for xtb_new
166 * This ensures that we do not xbt_new things that need a constructor.
168 template<typename T> inline
169 T* xbt_new_(size_t count)
171 static_assert(std::is_trivial<T>(),
172 "Cannot xbt_new this type");
173 return (T*) xbt_malloc(sizeof(T) * count);
176 template<typename T> inline
177 T* xbt_new0_(size_t count)
179 static_assert(std::is_trivial<T>(),
180 "Cannot xbt_new0 this type");
181 return (T*) xbt_malloc0(sizeof(T) * count);
184 #define xbt_new(type, count) ::xbt_new_<type>(count)
185 #define xbt_new0(type, count) ::xbt_new0_<type>(count)
191 #endif /* _XBT_SYSDEP_H */