include/xbt/log.h

   1 /* log - a generic logging facility in the spirit of log4j                  */
   2
   3 /* Copyright (c) 2004-2015. The SimGrid Team. All rights reserved.          */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 /** @addtogroup XBT_log
   9  *  @brief A generic logging facility in the spirit of log4j (grounding feature)
  10  *
  11  */
  12
  13 /** \defgroup XBT_log_cats Existing log categories
  14  *  \ingroup XBT_log
  15  *  \brief (automatically extracted)
  16  *
  17  *  This is the list of all existing log categories in SimGrid.
  18  *  This list is automatically extracted from the source code by the tools/doxygen/xbt_log_extract_hierarchy.pl utility.
  19  *
  20  *  It should thus contain every categories that are defined in the SimGrid library.
  21  *  If you want to see the one defined in your code in addition, provide `--help-logs` on the command line of your simulator.
  22  */
  23
  24 /* XBT_LOG_MAYDAY: define this to replace the logging facilities with basic
  25    printf function. Useful to debug the logging facilities themselves, or to not make source analysis tools mad */
  26 //#define XBT_LOG_MAYDAY
  27
  28 #ifndef _XBT_LOG_H_
  29 #define _XBT_LOG_H_
  30
  31 #include "xbt/misc.h"
  32 #include <stdarg.h>
  33 #include <stddef.h>             /* NULL */
  34 SG_BEGIN_DECL()
  35 /**\brief Log priorities
  36  * \ingroup XBT_log
  37  *
  38  * The different existing priorities.
  39 */
  40 typedef enum {
  41   //! @cond
  42   xbt_log_priority_none = 0,           /** used internally (don't poke with)*/
  43   //! @endcond
  44   xbt_log_priority_trace = 1,          /**< enter and return of some functions */
  45   xbt_log_priority_debug = 2,          /**< crufty output  */
  46   xbt_log_priority_verbose = 3,        /**< verbose output for the user wanting more */
  47   xbt_log_priority_info = 4,           /**< output about the regular functionning */
  48   xbt_log_priority_warning = 5,        /**< minor issue encountered */
  49   xbt_log_priority_error = 6,          /**< issue encountered */
  50   xbt_log_priority_critical = 7,       /**< major issue encountered */
  51
  52   xbt_log_priority_infinite = 8,       /**< value for XBT_LOG_STATIC_THRESHOLD to not log */
  53
  54   //! @cond
  55   xbt_log_priority_uninitialized = -1  /* used internally (don't poke with) */
  56   //! @endcond
  57 } e_xbt_log_priority_t;
  58
  59 /*
  60  * define NLOG to disable at compilation time any logging request
  61  * define NDEBUG to disable at compilation time any logging request of priority below VERBOSE
  62  */
  63
  64 /**
  65  * @def XBT_LOG_STATIC_THRESHOLD
  66  * @ingroup XBT_log
  67  *
  68  * All logging requests with priority < XBT_LOG_STATIC_THRESHOLD are disabled at compile time, i.e., compiled out.
  69  */
  70 #ifdef NLOG
  71 #  define XBT_LOG_STATIC_THRESHOLD xbt_log_priority_infinite
  72 #else
  73
  74 #  ifdef NDEBUG
  75 #    define XBT_LOG_STATIC_THRESHOLD xbt_log_priority_verbose
  76 #  else                         /* !NLOG && !NDEBUG */
  77
  78 #    ifndef XBT_LOG_STATIC_THRESHOLD
  79 #      define XBT_LOG_STATIC_THRESHOLD xbt_log_priority_none
  80 #    endif                      /* !XBT_LOG_STATIC_THRESHOLD */
  81 #  endif                        /* NDEBUG */
  82 #endif                          /* !defined(NLOG) */
  83
  84 /* Transforms a category name to a global variable name. */
  85 #define _XBT_LOGV(cat) _XBT_LOG_CONCAT(_simgrid_log_category__, cat)
  86 #define _XBT_LOGV_CTOR(cat) _XBT_LOG_CONCAT2(_XBT_LOGV(cat), __constructor__)
  87 #define _XBT_LOG_CONCAT(x, y) x ## y
  88 #define _XBT_LOG_CONCAT2(x, y) _XBT_LOG_CONCAT(x, y)
  89 /* Apparently, constructor priorities are not supported by gcc on Macs */
  90 #if defined(__GNUC__) && defined(__APPLE__)
  91 #  define _XBT_LOGV_CTOR_ATTRIBUTE
  92 #else
  93 #  define _XBT_LOGV_CTOR_ATTRIBUTE _XBT_GNUC_CONSTRUCTOR(600)
  94 #endif
  95
  96 /* The root of the category hierarchy. */
  97 #define XBT_LOG_ROOT_CAT   root
  98
  99 /* The whole tree of categories is connected by setting the address of the parent category as a field of the child one.
 100  * This is normally done at the first use of the category.
 101  *
 102  * It is however necessary to make this connections as early as possible, if we want the category to be listed by
 103  * --help-log-categories.
 104  *
 105  * When possible, the initializations takes place automatically before the start of main().  It's the case when
 106  * compiling with gcc.
 107  *
 108  * For the other cases, you can use the XBT_LOG_CONNECT(cat) macro to force early initialization.  See, for example,
 109  * in xbt/log.c, the function xbt_log_connect_categories().
 110  */
 111
 112 #define XBT_LOG_CONNECT(cat)                    \
 113   if (1) {                                      \
 114     extern void _XBT_LOGV_CTOR(cat)(void);      \
 115     _XBT_LOGV_CTOR(cat)();                      \
 116   } else ((void)0)
 117
 118 /* XBT_LOG_NEW_SUBCATEGORY_helper:
 119  * Implementation of XBT_LOG_NEW_SUBCATEGORY, which must declare "extern parent" in addition to avoid an extra
 120  * declaration of root when XBT_LOG_NEW_SUBCATEGORY is called by XBT_LOG_NEW_CATEGORY */
 121 #define XBT_LOG_NEW_SUBCATEGORY_helper(catName, parent, desc)           \
 122   SG_BEGIN_DECL()                                                       \
 123   extern void _XBT_LOGV_CTOR(catName)(void) _XBT_LOGV_CTOR_ATTRIBUTE; \
 124   void _XBT_LOGV_CTOR(catName)(void)                                    \
 125   {                                                                     \
 126     XBT_LOG_EXTERNAL_CATEGORY(catName);                                 \
 127     if (!_XBT_LOGV(catName).initialized) {                              \
 128       _xbt_log_cat_init(&_XBT_LOGV(catName), xbt_log_priority_uninitialized); \
 129     }                                                                   \
 130   }                                                                     \
 131   SG_END_DECL()                                                         \
 132   XBT_EXPORT_NO_IMPORT(s_xbt_log_category_t) _XBT_LOGV(catName) = {     \
 133     &_XBT_LOGV(parent),                                                 \
 134     NULL /* firstChild */,                                              \
 135     NULL /* nextSibling */,                                             \
 136     #catName,                                                           \
 137     desc,                                                               \
 138     0 /*initialized */,                                                 \
 139     xbt_log_priority_uninitialized /* threshold */,                     \
 140     1 /* isThreshInherited */,                                          \
 141     NULL /* appender */,                                                \
 142     NULL /* layout */,                                                  \
 143     1 /* additivity */                                                  \
 144   }
 145
 146 /**
 147  * \ingroup XBT_log
 148  * \param catName name of new category
 149  * \param parent father of the new category in the tree
 150  * \param desc string describing the purpose of this category
 151  * \hideinitializer
 152  *
 153  * Defines a new subcategory of the parent.
 154  */
 155 #define XBT_LOG_NEW_SUBCATEGORY(catName, parent, desc)    \
 156   XBT_LOG_EXTERNAL_CATEGORY(parent);                      \
 157   XBT_LOG_NEW_SUBCATEGORY_helper(catName, parent, desc)   \
 158
 159 /**
 160  * \ingroup XBT_log
 161  * \param catName name of new category
 162  * \param desc string describing the purpose of this category
 163  * \hideinitializer
 164  *
 165  * Creates a new subcategory of the root category.
 166  */
 167 # define XBT_LOG_NEW_CATEGORY(catName,desc)  \
 168    XBT_LOG_NEW_SUBCATEGORY_helper(catName, XBT_LOG_ROOT_CAT, desc)
 169
 170 /**
 171  * \ingroup XBT_log
 172  * \param cname name of the cat
 173  * \hideinitializer
 174  *
 175  * Indicates which category is the default one.
 176  */
 177
 178 #if defined(XBT_LOG_MAYDAY) /*|| defined (NLOG) * turning logging off */
 179 # define XBT_LOG_DEFAULT_CATEGORY(cname)
 180 #else
 181 # define XBT_LOG_DEFAULT_CATEGORY(cname) \
 182    static xbt_log_category_t _XBT_LOGV(default) XBT_ATTRIB_UNUSED = &_XBT_LOGV(cname)
 183 #endif
 184
 185 /**
 186  * \ingroup XBT_log
 187  * \param cname name of the cat
 188  * \param desc string describing the purpose of this category
 189  * \hideinitializer
 190  *
 191  * Creates a new subcategory of the root category and makes it the default (used by macros that don't explicitly
 192  * specify a category).
 193  */
 194 # define XBT_LOG_NEW_DEFAULT_CATEGORY(cname,desc)        \
 195     XBT_LOG_NEW_CATEGORY(cname,desc);                   \
 196     XBT_LOG_DEFAULT_CATEGORY(cname)
 197
 198 /**
 199  * \ingroup XBT_log
 200  * \param cname name of the cat
 201  * \param parent name of the parent
 202  * \param desc string describing the purpose of this category
 203  * \hideinitializer
 204  *
 205  * Creates a new subcategory of the parent category and makes it the default
 206  * (used by macros that don't explicitly specify a category).
 207  */
 208 #define XBT_LOG_NEW_DEFAULT_SUBCATEGORY(cname, parent, desc) \
 209     XBT_LOG_NEW_SUBCATEGORY(cname, parent, desc);            \
 210     XBT_LOG_DEFAULT_CATEGORY(cname)
 211
 212 /**
 213  * \ingroup XBT_log
 214  * \param cname name of the cat
 215  * \hideinitializer
 216  *
 217  * Indicates that a category you'll use in this file (e.g., to get subcategories of it) really lives in another file.
 218  */
 219
 220 #define XBT_LOG_EXTERNAL_CATEGORY(cname) \
 221    extern s_xbt_log_category_t _XBT_LOGV(cname)
 222
 223 /**
 224  * \ingroup XBT_log
 225  * \param cname name of the cat
 226  * \hideinitializer
 227  *
 228  * Indicates that the default category of this file was declared in another file.
 229  */
 230
 231 #define XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(cname) \
 232    XBT_LOG_EXTERNAL_CATEGORY(cname);\
 233    XBT_LOG_DEFAULT_CATEGORY(cname)
 234
 235 /* Functions you may call */
 236
 237 XBT_PUBLIC(void) xbt_log_control_set(const char *cs);
 238
 239 /* Forward declarations */
 240 typedef struct xbt_log_appender_s  s_xbt_log_appender_t;
 241 typedef struct xbt_log_appender_s* xbt_log_appender_t;
 242 typedef struct xbt_log_layout_s  s_xbt_log_layout_t;
 243 typedef struct xbt_log_layout_s* xbt_log_layout_t;
 244 typedef struct xbt_log_event_s  s_xbt_log_event_t;
 245 typedef struct xbt_log_event_s* xbt_log_event_t;
 246 typedef struct xbt_log_category_s  s_xbt_log_category_t;
 247 typedef struct xbt_log_category_s* xbt_log_category_t;
 248
 249 /* Do NOT access any members of this structure directly. FIXME: move to private? */
 250
 251 struct xbt_log_category_s {
 252   xbt_log_category_t parent;
 253   xbt_log_category_t firstChild;
 254   xbt_log_category_t nextSibling;
 255   const char *name;
 256   const char *description;
 257   int initialized;
 258   int threshold;
 259   int isThreshInherited;
 260   xbt_log_appender_t appender;
 261   xbt_log_layout_t layout;
 262   int additivity;
 263 };
 264
 265 struct xbt_log_event_s {
 266   xbt_log_category_t cat;
 267   e_xbt_log_priority_t priority;
 268   const char *fileName;
 269   const char *functionName;
 270   int lineNum;
 271   va_list ap;
 272   char *buffer;
 273   int buffer_size;
 274 };
 275
 276 /**
 277  * \ingroup XBT_log_implem
 278  * \param cat the category (not only its name, but the variable)
 279  * \param thresholdPriority the priority
 280  *
 281  * Programatically alters a category's threshold priority (don't use).
 282  */
 283 XBT_PUBLIC(void) xbt_log_threshold_set(xbt_log_category_t cat, e_xbt_log_priority_t thresholdPriority);
 284
 285 /**
 286  * \ingroup XBT_log_implem
 287  * \param cat the category (not only its name, but the variable)
 288  * \param app the appender
 289  *
 290  * Programatically sets the category's appender. (the preferred interface is through xbt_log_control_set())
 291  */
 292 XBT_PUBLIC(void) xbt_log_appender_set(xbt_log_category_t cat, xbt_log_appender_t app);
 293 /**
 294  * \ingroup XBT_log_implem
 295  * \param cat the category (not only its name, but the variable)
 296  * \param lay the layout
 297  *
 298  * Programatically sets the category's layout. (the preferred interface is through xbt_log_control_set())
 299  */
 300 XBT_PUBLIC(void) xbt_log_layout_set(xbt_log_category_t cat, xbt_log_layout_t lay);
 301
 302 /**
 303  * \ingroup XBT_log_implem
 304  * \param cat the category (not only its name, but the variable)
 305  * \param additivity whether logging actions must be passed to parent.
 306  *
 307  * Programatically sets whether the logging actions must be passed to the parent category.
 308  * (the preferred interface is through xbt_log_control_set())
 309  */
 310 XBT_PUBLIC(void) xbt_log_additivity_set(xbt_log_category_t cat, int additivity);
 311
 312 /** @brief create a new simple layout
 313  *
 314  * This layout is not as flexible as the pattern one
 315  */
 316 XBT_PUBLIC(xbt_log_layout_t) xbt_log_layout_simple_new(char *arg);
 317 XBT_PUBLIC(xbt_log_layout_t) xbt_log_layout_format_new(char *arg);
 318 XBT_PUBLIC(xbt_log_appender_t) xbt_log_appender_file_new(char *arg);
 319 XBT_PUBLIC(xbt_log_appender_t) xbt_log_appender2_file_new(char *arg,int roll);
 320
 321 /* ********************************** */
 322 /* Functions that you shouldn't call  */
 323 /* ********************************** */
 324 XBT_PUBLIC(void) _xbt_log_event_log(xbt_log_event_t ev, const char *fmt, ...) XBT_ATTRIB_PRINTF(2, 3);
 325 XBT_PUBLIC(int) _xbt_log_cat_init(xbt_log_category_t category, e_xbt_log_priority_t priority);
 326
 327 #ifdef DLL_EXPORT
 328 XBT_PUBLIC_DATA(s_xbt_log_category_t) _XBT_LOGV(XBT_LOG_ROOT_CAT);
 329 #else
 330 // If we `dllexport` the root log category, MinGW does not want us to take its address with the error:
 331 // > initializer element is not constant
 332 // When using auto-import, MinGW is happy.
 333 // We should handle this for non-root log categories as well.
 334 extern s_xbt_log_category_t _XBT_LOGV(XBT_LOG_ROOT_CAT);
 335 #endif
 336
 337 extern xbt_log_appender_t xbt_log_default_appender;
 338 extern xbt_log_layout_t xbt_log_default_layout;
 339
 340 /* ********************** */
 341 /* Public functions again */
 342 /* ********************** */
 343
 344 /**
 345  * \ingroup XBT_log
 346  * \param catName name of the category
 347  * \param priority minimal priority to be enabled to return true (must be #e_xbt_log_priority_t)
 348  * \hideinitializer
 349  *
 350  * Returns true if the given priority is enabled for the category.
 351  * If you have expensive expressions that are computed outside of the log command and used only within it, you should
 352  * make its evaluation conditional using this macro.
 353  */
 354 #define XBT_LOG_ISENABLED(catName, priority) \
 355             _XBT_LOG_ISENABLEDV(_XBT_LOGV(catName), priority)
 356
 357 /*
 358  * Helper function that implements XBT_LOG_ISENABLED.
 359  *
 360  * NOTES
 361  * First part is a compile-time constant.
 362  * Call to xbt_log_cat_init only happens once.
 363  */
 364 #define _XBT_LOG_ISENABLEDV(catv, priority)                  \
 365        (priority >= XBT_LOG_STATIC_THRESHOLD                 \
 366         && ((catv).initialized || _xbt_log_cat_init(&(catv), priority)) \
 367         && priority >= (catv).threshold)
 368
 369 /*
 370  * Internal Macros
 371  * Some kludge macros to ease maintenance. See how they're used below.
 372  *
 373  * IMPLEMENTATION NOTE: To reduce the parameter passing overhead of an enabled message, the many parameters passed to
 374  * the logging function are packed in a structure. Since these values will be usually be passed to at least 3 functions,
 375  * this is a win.
 376  * It also allows adding new values (such as a timestamp) without breaking code.
 377  * Setting the LogEvent's valist member is done inside _log_logEvent.
 378  */
 379
 380 /* Logging Macros */
 381
 382 #ifdef XBT_LOG_MAYDAY
 383 # define XBT_CLOG(cat, prio, ...) \
 384   _XBT_IF_ONE_ARG(_XBT_CLOG_ARG1, _XBT_CLOG_ARGN, __VA_ARGS__)(__VA_ARGS__)
 385 # define _XBT_CLOG_ARG1(f) \
 386   fprintf(stderr,"%s:%d:\n" f, __FILE__, __LINE__)
 387 # define _XBT_CLOG_ARGN(f, ...) \
 388   fprintf(stderr,"%s:%d:\n" f, __FILE__, __LINE__, __VA_ARGS__)
 389 # define XBT_LOG(...) XBT_CLOG(0, __VA_ARGS__)
 390 #else
 391
 392 // This code is duplicated to remove one level of indirection, working around a MSVC bug
 393 // See: http://stackoverflow.com/questions/9183993/msvc-variadic-macro-expansion
 394
 395 # define XBT_CLOG(category, prio, ...) \
 396   do {                                                                  \
 397     if (_XBT_LOG_ISENABLEDV((category), prio)) {                        \
 398       s_xbt_log_event_t _log_ev;                                        \
 399       _log_ev.cat = &(category);                                        \
 400       _log_ev.priority = (prio);                                        \
 401       _log_ev.fileName = __FILE__;                                      \
 402       _log_ev.functionName = __func__;                             \
 403       _log_ev.lineNum = __LINE__;                                       \
 404       _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 405     }                                                                   \
 406   }  while (0)
 407
 408 # define XBT_LOG(prio,...) \
 409   do {                                                                  \
 410     if (_XBT_LOG_ISENABLEDV((*_simgrid_log_category__default), prio)) { \
 411       s_xbt_log_event_t _log_ev;                                        \
 412       _log_ev.cat = _simgrid_log_category__default;                     \
 413       _log_ev.priority = (prio);                                        \
 414       _log_ev.fileName = __FILE__;                                      \
 415       _log_ev.functionName = __func__;                             \
 416       _log_ev.lineNum = __LINE__;                                       \
 417       _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 418     }                                                                   \
 419   }  while (0)
 420 #endif
 421
 422 /** @ingroup XBT_log
 423  *  @hideinitializer
 424  * \param categ the category on which to log
 425  * \param ... the format string and its arguments
 426  *  @brief Log an event at the DEBUG priority on the specified category with these args.
 427  */
 428 #define XBT_CDEBUG(categ, ...) \
 429       do {                                                                  \
 430         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_debug)) {            \
 431           s_xbt_log_event_t _log_ev;                                        \
 432           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 433           _log_ev.priority = xbt_log_priority_debug;                        \
 434           _log_ev.fileName = __FILE__;                                      \
 435           _log_ev.functionName = __func__;                             \
 436           _log_ev.lineNum = __LINE__;                                       \
 437           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 438         }                                                                   \
 439       }  while (0)
 440
 441 /** @ingroup XBT_log
 442  *  @hideinitializer
 443  *  @brief Log an event at the VERB priority on the specified category with these args.
 444  */
 445 #define XBT_CVERB(categ, ...)  \
 446       do {                                                                  \
 447         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_verbose)) {          \
 448           s_xbt_log_event_t _log_ev;                                        \
 449           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 450           _log_ev.priority = xbt_log_priority_verbose;                      \
 451           _log_ev.fileName = __FILE__;                                      \
 452           _log_ev.functionName = __func__;                             \
 453           _log_ev.lineNum = __LINE__;                                       \
 454           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 455         }                                                                   \
 456       }  while (0)
 457
 458 /** @ingroup XBT_log
 459  *  @hideinitializer
 460  *  @brief Log an event at the INFO priority on the specified category with these args.
 461  */
 462 #define XBT_CINFO(categ, ...) \
 463       do {                                                                  \
 464         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_info)) {             \
 465           s_xbt_log_event_t _log_ev;                                        \
 466           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 467           _log_ev.priority = xbt_log_priority_info;                         \
 468           _log_ev.fileName = __FILE__;                                      \
 469           _log_ev.functionName = __func__;                             \
 470           _log_ev.lineNum = __LINE__;                                       \
 471           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 472         }                                                                   \
 473       }  while (0)
 474
 475
 476 /** @ingroup XBT_log
 477  *  @hideinitializer
 478  *  @brief Log an event at the WARN priority on the specified category with these args.
 479  */
 480 #define XBT_CWARN(categ, ...) \
 481       do {                                                                  \
 482         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_warning)) {          \
 483           s_xbt_log_event_t _log_ev;                                        \
 484           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 485           _log_ev.priority = xbt_log_priority_warning;                      \
 486           _log_ev.fileName = __FILE__;                                      \
 487           _log_ev.functionName = __func__;                             \
 488           _log_ev.lineNum = __LINE__;                                       \
 489           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 490         }                                                                   \
 491       }  while (0)
 492
 493
 494 /** @ingroup XBT_log
 495  *  @hideinitializer
 496  *  @brief Log an event at the ERROR priority on the specified category with these args.
 497  */
 498 #define XBT_CERROR(categ, ...) \
 499       do {                                                                  \
 500         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_error)) {            \
 501           s_xbt_log_event_t _log_ev;                                        \
 502           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 503           _log_ev.priority = xbt_log_priority_error;                        \
 504           _log_ev.fileName = __FILE__;                                      \
 505           _log_ev.functionName = __func__;                             \
 506           _log_ev.lineNum = __LINE__;                                       \
 507           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 508         }                                                                   \
 509       }  while (0)
 510
 511 /** @ingroup XBT_log
 512  *  @hideinitializer
 513  *  @brief Log an event at the CRITICAL priority on the specified category with these args (CCRITICALn exists for any n<10).
 514  */
 515 #define XBT_CCRITICAL(categ, ...) \
 516       do {                                                                  \
 517         if (XBT_LOG_ISENABLED (categ, xbt_log_priority_critical)) {         \
 518           s_xbt_log_event_t _log_ev;                                        \
 519           _log_ev.cat = &(_XBT_LOGV(categ));                                \
 520           _log_ev.priority = xbt_log_priority_critical;                     \
 521           _log_ev.fileName = __FILE__;                                      \
 522           _log_ev.functionName = __func__;                             \
 523           _log_ev.lineNum = __LINE__;                                       \
 524           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 525         }                                                                   \
 526       }  while (0)
 527
 528 /** @ingroup XBT_log
 529  *  @hideinitializer
 530  * \param ... the format string and its arguments
 531  *  @brief Log an event at the DEBUG priority on the default category with these args.
 532  */
 533 #define XBT_DEBUG(...) \
 534       do {                                                                  \
 535         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 536                             xbt_log_priority_debug)) {                  \
 537           s_xbt_log_event_t _log_ev;                                        \
 538           _log_ev.cat = _simgrid_log_category__default;                     \
 539           _log_ev.priority = xbt_log_priority_debug;                        \
 540           _log_ev.fileName = __FILE__;                                      \
 541           _log_ev.functionName = __func__;                              \
 542           _log_ev.lineNum = __LINE__;                                       \
 543           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 544         }                                                                   \
 545       }  while (0)
 546
 547 /** @ingroup XBT_log
 548  *  @hideinitializer
 549  *  @brief Log an event at the VERB priority on the default category with these args.
 550  */
 551 #define XBT_VERB(...) \
 552       do {                                                                  \
 553         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 554                             xbt_log_priority_verbose)) {                \
 555           s_xbt_log_event_t _log_ev;                                        \
 556           _log_ev.cat = _simgrid_log_category__default;                     \
 557           _log_ev.priority = xbt_log_priority_verbose;                      \
 558           _log_ev.fileName = __FILE__;                                      \
 559           _log_ev.functionName = __func__;                             \
 560           _log_ev.lineNum = __LINE__;                                       \
 561           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 562         }                                                                   \
 563       }  while (0)
 564
 565 /** @ingroup XBT_log
 566  *  @hideinitializer
 567  *  @brief Log an event at the INFO priority on the default category with these args.
 568  */
 569 #define XBT_INFO(...) \
 570       do {                                                                  \
 571         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 572                             xbt_log_priority_info)) {                   \
 573           s_xbt_log_event_t _log_ev;                                        \
 574           _log_ev.cat = _simgrid_log_category__default;                     \
 575           _log_ev.priority = xbt_log_priority_info;                         \
 576           _log_ev.fileName = __FILE__;                                      \
 577           _log_ev.functionName = __func__;                             \
 578           _log_ev.lineNum = __LINE__;                                       \
 579           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 580         }                                                                   \
 581       }  while (0)
 582
 583 /** @ingroup XBT_log
 584  *  @hideinitializer
 585  *  @brief Log an event at the WARN priority on the default category with these args.
 586  */
 587 #define XBT_WARN(...) \
 588       do {                                                                  \
 589         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 590                             xbt_log_priority_warning)) {                \
 591           s_xbt_log_event_t _log_ev;                                        \
 592           _log_ev.cat = _simgrid_log_category__default;                     \
 593           _log_ev.priority = xbt_log_priority_warning;                      \
 594           _log_ev.fileName = __FILE__;                                      \
 595           _log_ev.functionName = __func__;                             \
 596           _log_ev.lineNum = __LINE__;                                       \
 597           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 598         }                                                                   \
 599       }  while (0)
 600
 601 /** @ingroup XBT_log
 602  *  @hideinitializer
 603  *  @brief Log an event at the ERROR priority on the default category with these args.
 604  */
 605 #define XBT_ERROR(...) \
 606       do {                                                                  \
 607         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 608                             xbt_log_priority_error)) {                  \
 609           s_xbt_log_event_t _log_ev;                                        \
 610           _log_ev.cat = _simgrid_log_category__default;                     \
 611           _log_ev.priority = xbt_log_priority_error;                        \
 612           _log_ev.fileName = __FILE__;                                      \
 613           _log_ev.functionName = __func__;                             \
 614           _log_ev.lineNum = __LINE__;                                       \
 615           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 616         }                                                                   \
 617       }  while (0)
 618
 619 /** @ingroup XBT_log
 620  *  @hideinitializer
 621  *  @brief Log an event at the CRITICAL priority on the default category with these args.
 622  */
 623 #define XBT_CRITICAL(...) \
 624       do {                                                                  \
 625         if (_XBT_LOG_ISENABLEDV(*_simgrid_log_category__default,            \
 626                             xbt_log_priority_critical)) {               \
 627           s_xbt_log_event_t _log_ev;                                        \
 628           _log_ev.cat = _simgrid_log_category__default;                     \
 629           _log_ev.priority = xbt_log_priority_critical;                     \
 630           _log_ev.fileName = __FILE__;                                      \
 631           _log_ev.functionName = __func__;                             \
 632           _log_ev.lineNum = __LINE__;                                       \
 633           _xbt_log_event_log(&_log_ev, __VA_ARGS__);                        \
 634         }                                                                   \
 635       }  while (0)
 636
 637 #define _XBT_IN_OUT(...) \
 638   _XBT_IF_ONE_ARG(_XBT_IN_OUT_ARG1, _XBT_IN_OUT_ARGN, __VA_ARGS__)(__VA_ARGS__)
 639 #define _XBT_IN_OUT_ARG1(fmt) \
 640   XBT_LOG(xbt_log_priority_trace, fmt, __func__)
 641 #define _XBT_IN_OUT_ARGN(fmt, ...) \
 642   XBT_LOG(xbt_log_priority_trace, fmt, __func__, __VA_ARGS__)
 643
 644 /** @ingroup XBT_log
 645  *  @hideinitializer
 646  *  @brief Log at TRACE priority that we entered in current function, appending a user specified format.
 647  */
 648 #define XBT_IN(...) _XBT_IN_OUT(">> begin of %s" __VA_ARGS__)
 649
 650 /** @ingroup XBT_log
 651  *  @hideinitializer
 652  *  @brief Log at TRACE priority that we exited the current function, appending a user specified format.
 653  */
 654 #define XBT_OUT(...) _XBT_IN_OUT("<< end of %s" __VA_ARGS__)
 655
 656 /** @ingroup XBT_log
 657  *  @hideinitializer
 658  *  @brief Log at TRACE priority a message indicating that we reached that point, appending a user specified format.
 659  */
 660 #define XBT_HERE(...) XBT_LOG(xbt_log_priority_trace, "-- was here" __VA_ARGS__)
 661
 662 SG_END_DECL()
 663 #endif                          /* ! _XBT_LOG_H_ */