1 /* log - a generic logging facility in the spirit of log4j */
3 /* Copyright (c) 2004-2015. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include <stdio.h> /* snprintf */
12 #include <stdlib.h> /* snprintf */
14 #include "src/internal_config.h"
16 #include "src/xbt_modinter.h"
21 #include "xbt/sysdep.h"
22 #include "src/xbt/log_private.h"
23 #include "xbt/dynar.h"
24 #include "xbt/xbt_os_thread.h"
26 int xbt_log_no_loc = 0; /* if set to true (with --log=no_loc), file localization will be omitted (for tesh tests) */
27 static xbt_os_mutex_t log_cat_init_mutex = NULL;
29 /** \addtogroup XBT_log
31 * For more information, please refer to @ref outcomes_logs Section.
34 xbt_log_appender_t xbt_log_default_appender = NULL; /* set in log_init */
35 xbt_log_layout_t xbt_log_default_layout = NULL; /* set in log_init */
40 e_xbt_log_priority_t thresh;
42 xbt_log_appender_t appender;
43 } s_xbt_log_setting_t, *xbt_log_setting_t;
45 static xbt_dynar_t xbt_log_settings = NULL;
47 static void _free_setting(void *s)
49 xbt_log_setting_t set = *(xbt_log_setting_t *) s;
57 static void _xbt_log_cat_apply_set(xbt_log_category_t category, xbt_log_setting_t setting);
59 const char *xbt_log_priority_names[8] = {
70 s_xbt_log_category_t _XBT_LOGV(XBT_LOG_ROOT_CAT) = {
71 NULL /*parent */ , NULL /* firstChild */ , NULL /* nextSibling */ ,
72 "root", "The common ancestor for all categories",
73 0 /*initialized */, xbt_log_priority_uninitialized /* threshold */ ,
74 0 /* isThreshInherited */ ,
75 NULL /* appender */ , NULL /* layout */ ,
79 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(log, xbt, "Loggings from the logging mechanism itself");
81 /* create the default appender and install it in the root category,
82 which were already created (damnit. Too slow little beetle) */
83 void xbt_log_preinit(void)
85 xbt_log_default_appender = xbt_log_appender_file_new(NULL);
86 xbt_log_default_layout = xbt_log_layout_simple_new(NULL);
87 _XBT_LOGV(XBT_LOG_ROOT_CAT).appender = xbt_log_default_appender;
88 _XBT_LOGV(XBT_LOG_ROOT_CAT).layout = xbt_log_default_layout;
89 log_cat_init_mutex = xbt_os_mutex_init();
92 static void xbt_log_connect_categories(void)
94 /* Connect our log channels: that must be done manually under windows */
95 /* Also permit that they are correctly listed by xbt_log_help_categories() */
100 XBT_LOG_CONNECT(module);
101 XBT_LOG_CONNECT(replay);
102 XBT_LOG_CONNECT(strbuff);
103 XBT_LOG_CONNECT(xbt_cfg);
104 XBT_LOG_CONNECT(xbt_dict);
105 XBT_LOG_CONNECT(xbt_dict_cursor);
106 XBT_LOG_CONNECT(xbt_dict_elm);
107 XBT_LOG_CONNECT(xbt_dyn);
108 XBT_LOG_CONNECT(xbt_ex);
109 XBT_LOG_CONNECT(xbt_backtrace);
110 XBT_LOG_CONNECT(xbt_exception);
111 XBT_LOG_CONNECT(xbt_fifo);
112 XBT_LOG_CONNECT(xbt_graph);
113 XBT_LOG_CONNECT(xbt_heap);
114 XBT_LOG_CONNECT(xbt_lib);
115 XBT_LOG_CONNECT(xbt_mallocator);
116 XBT_LOG_CONNECT(xbt_matrix);
117 XBT_LOG_CONNECT(xbt_parmap);
118 XBT_LOG_CONNECT(xbt_sync);
119 XBT_LOG_CONNECT(xbt_sync_os);
121 #ifdef simgrid_EXPORTS
122 /* The following categories are only defined in libsimgrid */
126 XBT_LOG_CONNECT(lua);
127 XBT_LOG_CONNECT(lua_host);
128 XBT_LOG_CONNECT(lua_platf);
129 XBT_LOG_CONNECT(lua_debug);
133 XBT_LOG_CONNECT(instr);
134 XBT_LOG_CONNECT(instr_api);
135 XBT_LOG_CONNECT(instr_config);
136 XBT_LOG_CONNECT(instr_msg);
137 XBT_LOG_CONNECT(instr_msg_process);
138 XBT_LOG_CONNECT(instr_msg_vm);
139 XBT_LOG_CONNECT(instr_paje_containers);
140 XBT_LOG_CONNECT(instr_paje_header);
141 XBT_LOG_CONNECT(instr_paje_trace);
142 XBT_LOG_CONNECT(instr_paje_types);
143 XBT_LOG_CONNECT(instr_paje_values);
144 XBT_LOG_CONNECT(instr_resource);
145 XBT_LOG_CONNECT(instr_routing);
146 XBT_LOG_CONNECT(instr_surf);
147 XBT_LOG_CONNECT(instr_trace);
148 XBT_LOG_CONNECT(instr_TI_trace);
152 XBT_LOG_CONNECT(jedule);
153 XBT_LOG_CONNECT(jed_out);
154 XBT_LOG_CONNECT(jed_sd);
160 XBT_LOG_CONNECT(mc_checkpoint);
161 XBT_LOG_CONNECT(mc_comm_determinism);
162 XBT_LOG_CONNECT(mc_compare);
163 XBT_LOG_CONNECT(mc_dwarf);
164 XBT_LOG_CONNECT(mc_hash);
165 XBT_LOG_CONNECT(mc_liveness);
166 XBT_LOG_CONNECT(mc_memory);
167 XBT_LOG_CONNECT(mc_page_snapshot);
168 XBT_LOG_CONNECT(mc_request);
169 XBT_LOG_CONNECT(mc_safety);
170 XBT_LOG_CONNECT(mc_VisitedState);
171 XBT_LOG_CONNECT(mc_client);
172 XBT_LOG_CONNECT(mc_client_api);
173 XBT_LOG_CONNECT(mc_comm_pattern);
174 XBT_LOG_CONNECT(mc_process);
175 XBT_LOG_CONNECT(mc_protocol);
176 XBT_LOG_CONNECT(mc_RegionSnaphot);
177 XBT_LOG_CONNECT(mc_ModelChecker);
178 XBT_LOG_CONNECT(mc_state);
180 XBT_LOG_CONNECT(mc_global);
181 XBT_LOG_CONNECT(mc_config);
182 XBT_LOG_CONNECT(mc_record);
185 XBT_LOG_CONNECT(msg);
186 XBT_LOG_CONNECT(msg_action);
187 XBT_LOG_CONNECT(msg_gos);
188 XBT_LOG_CONNECT(msg_io);
189 XBT_LOG_CONNECT(msg_kernel);
190 XBT_LOG_CONNECT(msg_mailbox);
191 XBT_LOG_CONNECT(msg_process);
192 XBT_LOG_CONNECT(msg_synchro);
193 XBT_LOG_CONNECT(msg_task);
194 XBT_LOG_CONNECT(msg_vm);
197 XBT_LOG_CONNECT(sg_host);
201 XBT_LOG_CONNECT(sd_daxparse);
203 XBT_LOG_CONNECT(sd_dotparse);
205 XBT_LOG_CONNECT(sd_kernel);
206 XBT_LOG_CONNECT(sd_task);
209 XBT_LOG_CONNECT(simix);
210 XBT_LOG_CONNECT(simix_context);
211 XBT_LOG_CONNECT(simix_deployment);
212 XBT_LOG_CONNECT(simix_environment);
213 XBT_LOG_CONNECT(simix_host);
214 XBT_LOG_CONNECT(simix_io);
215 XBT_LOG_CONNECT(simix_kernel);
216 XBT_LOG_CONNECT(simix_network);
217 XBT_LOG_CONNECT(simix_process);
218 XBT_LOG_CONNECT(simix_popping);
219 XBT_LOG_CONNECT(simix_synchro);
220 XBT_LOG_CONNECT(simix_vm);
223 /* SMPI categories are connected in smpi_global.c */
226 XBT_LOG_CONNECT(surf);
227 XBT_LOG_CONNECT(surf_config);
228 XBT_LOG_CONNECT(surf_cpu);
229 XBT_LOG_CONNECT(surf_cpu_cas);
230 XBT_LOG_CONNECT(surf_cpu_ti);
231 XBT_LOG_CONNECT(surf_energy);
232 XBT_LOG_CONNECT(surf_kernel);
233 XBT_LOG_CONNECT(surf_lagrange);
234 XBT_LOG_CONNECT(surf_lagrange_dichotomy);
235 XBT_LOG_CONNECT(surf_maxmin);
236 XBT_LOG_CONNECT(surf_network);
238 XBT_LOG_CONNECT(ns3);
240 XBT_LOG_CONNECT(surf_parse);
241 XBT_LOG_CONNECT(surf_route);
242 XBT_LOG_CONNECT(surf_routing_generic);
243 XBT_LOG_CONNECT(surf_route_cluster);
244 XBT_LOG_CONNECT(surf_route_cluster_torus);
245 XBT_LOG_CONNECT(surf_route_dijkstra);
246 XBT_LOG_CONNECT(surf_route_fat_tree);
247 XBT_LOG_CONNECT(surf_route_floyd);
248 XBT_LOG_CONNECT(surf_route_full);
249 XBT_LOG_CONNECT(surf_route_none);
250 XBT_LOG_CONNECT(surf_route_vivaldi);
251 XBT_LOG_CONNECT(surf_storage);
252 XBT_LOG_CONNECT(surf_trace);
253 XBT_LOG_CONNECT(surf_vm);
254 XBT_LOG_CONNECT(surf_host);
256 #endif /* simgrid_EXPORTS */
259 static void xbt_log_help(void);
260 static void xbt_log_help_categories(void);
262 /** @brief Get all logging settings from the command line
264 * xbt_log_control_set() is called on each string we got from cmd line
266 void xbt_log_init(int *argc, char **argv)
268 unsigned help_requested = 0; /* 1: logs; 2: categories */
272 // _XBT_LOGV(log).threshold = xbt_log_priority_debug; /* uncomment to set the LOG category to debug directly */
274 xbt_log_connect_categories();
276 /* Set logs and init log submodule */
277 for (j = i = 1; i < *argc; i++) {
278 if (!strncmp(argv[i], "--log=", strlen("--log="))) {
279 opt = strchr(argv[i], '=');
281 xbt_log_control_set(opt);
282 XBT_DEBUG("Did apply '%s' as log setting", opt);
283 } else if (!strcmp(argv[i], "--help-logs")) {
285 } else if (!strcmp(argv[i], "--help-log-categories")) {
296 if (help_requested) {
297 if (help_requested & 1)
299 if (help_requested & 2)
300 xbt_log_help_categories();
305 static void log_cat_exit(xbt_log_category_t cat)
307 xbt_log_category_t child;
310 if (cat->appender->free_)
311 cat->appender->free_(cat->appender);
315 if (cat->layout->free_)
316 cat->layout->free_(cat->layout);
320 for (child = cat->firstChild; child != NULL; child = child->nextSibling)
324 void xbt_log_postexit(void)
326 XBT_VERB("Exiting log");
327 xbt_os_mutex_destroy(log_cat_init_mutex);
328 xbt_dynar_free(&xbt_log_settings);
329 log_cat_exit(&_XBT_LOGV(XBT_LOG_ROOT_CAT));
332 /* Size of the static string in which we build the log string */
333 #define XBT_LOG_STATIC_BUFFER_SIZE 2048
334 /* Minimum size of the dynamic string in which we build the log string
335 (should be greater than XBT_LOG_STATIC_BUFFER_SIZE) */
336 #define XBT_LOG_DYNAMIC_BUFFER_SIZE 4096
338 void _xbt_log_event_log(xbt_log_event_t ev, const char *fmt, ...)
340 xbt_log_category_t cat = ev->cat;
342 xbt_assert(ev->priority >= 0, "Negative logging priority naturally forbidden");
343 xbt_assert(ev->priority < sizeof(xbt_log_priority_names), "Priority %d is greater than the biggest allowed value",
347 xbt_log_appender_t appender = cat->appender;
350 continue; /* No appender, try next */
352 xbt_assert(cat->layout, "No valid layout for the appender of category %s", cat->name);
354 /* First, try with a static buffer */
355 if (XBT_LOG_STATIC_BUFFER_SIZE) {
356 char buff[XBT_LOG_STATIC_BUFFER_SIZE];
359 ev->buffer_size = sizeof buff;
360 va_start(ev->ap, fmt);
361 done = cat->layout->do_layout(cat->layout, ev, fmt);
364 appender->do_append(appender, buff);
365 continue; /* Ok, that worked: go next */
369 /* The static buffer was too small, use a dynamically expanded one */
370 ev->buffer_size = XBT_LOG_DYNAMIC_BUFFER_SIZE;
371 ev->buffer = xbt_malloc(ev->buffer_size);
374 va_start(ev->ap, fmt);
375 done = cat->layout->do_layout(cat->layout, ev, fmt);
379 ev->buffer_size *= 2;
380 ev->buffer = xbt_realloc(ev->buffer, ev->buffer_size);
382 appender->do_append(appender, ev->buffer);
383 xbt_free(ev->buffer);
385 } while (cat->additivity && (cat = cat->parent, 1));
388 #undef XBT_LOG_DYNAMIC_BUFFER_SIZE
389 #undef XBT_LOG_STATIC_BUFFER_SIZE
393 * The standard logging macros use _XBT_LOG_ISENABLED, which calls _xbt_log_cat_init(). Thus, if we want to avoid an
394 * infinite recursion, we can not use the standard logging macros in _xbt_log_cat_init(), and in all functions called
397 * To circumvent the problem, we define the macro_xbt_log_init() as (0) for the length of the affected functions, and
398 * we do not forget to undefine it at the end!
401 static void _xbt_log_cat_apply_set(xbt_log_category_t category, xbt_log_setting_t setting)
403 #define _xbt_log_cat_init(a, b) (0)
405 if (setting->thresh != xbt_log_priority_uninitialized) {
406 xbt_log_threshold_set(category, setting->thresh);
408 XBT_DEBUG("Apply settings for category '%s': set threshold to %s (=%d)",
409 category->name, xbt_log_priority_names[category->threshold], category->threshold);
413 xbt_log_layout_set(category, xbt_log_layout_format_new(setting->fmt));
415 XBT_DEBUG("Apply settings for category '%s': set format to %s", category->name, setting->fmt);
418 if (setting->additivity != -1) {
419 xbt_log_additivity_set(category, setting->additivity);
421 XBT_DEBUG("Apply settings for category '%s': set additivity to %s",
422 category->name, (setting->additivity ? "on" : "off"));
424 if (setting->appender) {
425 xbt_log_appender_set(category, setting->appender);
426 if (!category->layout)
427 xbt_log_layout_set(category, xbt_log_layout_simple_new(NULL));
428 category->additivity = 0;
429 XBT_DEBUG("Set %p as appender of category '%s'", setting->appender, category->name);
431 #undef _xbt_log_cat_init
435 * This gets called the first time a category is referenced and performs the initialization.
436 * Also resets threshold to inherited!
438 int _xbt_log_cat_init(xbt_log_category_t category, e_xbt_log_priority_t priority)
440 #define _xbt_log_cat_init(a, b) (0)
442 if (log_cat_init_mutex != NULL)
443 xbt_os_mutex_acquire(log_cat_init_mutex);
445 if (category->initialized) {
446 if (log_cat_init_mutex != NULL)
447 xbt_os_mutex_release(log_cat_init_mutex);
448 return priority >= category->threshold;
452 xbt_log_setting_t setting = NULL;
455 XBT_DEBUG("Initializing category '%s' (firstChild=%s, nextSibling=%s)", category->name,
456 (category->firstChild ? category->firstChild->name : "none"),
457 (category->nextSibling ? category->nextSibling->name : "none"));
459 if (category == &_XBT_LOGV(XBT_LOG_ROOT_CAT)) {
460 category->threshold = xbt_log_priority_info;
461 category->appender = xbt_log_default_appender;
462 category->layout = xbt_log_default_layout;
464 if (!category->parent)
465 category->parent = &_XBT_LOGV(XBT_LOG_ROOT_CAT);
467 XBT_DEBUG("Set %s (%s) as father of %s ", category->parent->name,
468 (category->parent->initialized ? xbt_log_priority_names[category->parent->threshold] : "uninited"),
470 xbt_log_parent_set(category, category->parent);
472 if (XBT_LOG_ISENABLED(log, xbt_log_priority_debug)) {
473 char *buf, *res = NULL;
474 xbt_log_category_t cpp = category->parent->firstChild;
477 buf = bprintf("%s %s", res, cpp->name);
481 res = xbt_strdup(cpp->name);
483 cpp = cpp->nextSibling;
486 XBT_DEBUG("Children of %s: %s; nextSibling: %s", category->parent->name, res,
487 (category->parent->nextSibling ? category->parent->nextSibling->name : "none"));
493 /* Apply the control */
494 if (xbt_log_settings) {
495 xbt_assert(category, "NULL category");
496 xbt_assert(category->name);
498 xbt_dynar_foreach(xbt_log_settings, cursor, setting) {
499 xbt_assert(setting, "Damnit, NULL cat in the list");
500 xbt_assert(setting->catname, "NULL setting(=%p)->catname", (void *) setting);
502 if (!strcmp(setting->catname, category->name)) {
504 _xbt_log_cat_apply_set(category, setting);
505 xbt_dynar_cursor_rm(xbt_log_settings, &cursor);
510 XBT_DEBUG("Category '%s': inherited threshold = %s (=%d)",
511 category->name, xbt_log_priority_names[category->threshold], category->threshold);
514 category->initialized = 1;
515 if (log_cat_init_mutex != NULL)
516 xbt_os_mutex_release(log_cat_init_mutex);
517 return priority >= category->threshold;
519 #undef _xbt_log_cat_init
522 void xbt_log_parent_set(xbt_log_category_t cat, xbt_log_category_t parent)
524 xbt_assert(cat, "NULL category to be given a parent");
525 xbt_assert(parent, "The parent category of %s is NULL", cat->name);
527 /* if the category is initialized, unlink from current parent */
528 if (cat->initialized) {
529 xbt_log_category_t *cpp = &cat->parent->firstChild;
531 while (*cpp != cat && *cpp != NULL) {
532 cpp = &(*cpp)->nextSibling;
535 xbt_assert(*cpp == cat);
536 *cpp = cat->nextSibling;
539 cat->parent = parent;
540 cat->nextSibling = parent->firstChild;
542 parent->firstChild = cat;
544 if (!parent->initialized)
545 _xbt_log_cat_init(parent, xbt_log_priority_uninitialized /* ignored */ );
547 cat->threshold = parent->threshold;
549 cat->isThreshInherited = 1;
552 static void _set_inherited_thresholds(xbt_log_category_t cat)
554 xbt_log_category_t child = cat->firstChild;
556 for (; child != NULL; child = child->nextSibling) {
557 if (child->isThreshInherited) {
558 if (cat != &_XBT_LOGV(log))
559 XBT_VERB("Set category threshold of %s to %s (=%d)",
560 child->name, xbt_log_priority_names[cat->threshold], cat->threshold);
561 child->threshold = cat->threshold;
562 _set_inherited_thresholds(child);
567 void xbt_log_threshold_set(xbt_log_category_t cat, e_xbt_log_priority_t threshold)
569 cat->threshold = threshold;
570 cat->isThreshInherited = 0;
572 _set_inherited_thresholds(cat);
575 static xbt_log_setting_t _xbt_log_parse_setting(const char *control_string)
577 const char *orig_control_string = control_string;
578 xbt_log_setting_t set = xbt_new(s_xbt_log_setting_t, 1);
579 const char *name, *dot, *eq;
582 set->thresh = xbt_log_priority_uninitialized;
584 set->additivity = -1;
585 set->appender = NULL;
587 if (!*control_string)
589 XBT_DEBUG("Parse log setting '%s'", control_string);
591 control_string += strspn(control_string, " ");
592 name = control_string;
593 control_string += strcspn(control_string, ".= ");
594 dot = control_string;
595 control_string += strcspn(control_string, ":= ");
598 if(*dot != '.' && (*eq == '=' || *eq == ':'))
599 xbt_die ("Invalid control string '%s'", orig_control_string);
601 if (!strncmp(dot + 1, "threshold", (size_t) (eq - dot - 1))) {
603 char *neweq = xbt_strdup(eq + 1);
606 while (*(++p) != '\0') {
607 if (*p >= 'a' && *p <= 'z') {
612 XBT_DEBUG("New priority name = %s", neweq);
613 for (i = 0; i < xbt_log_priority_infinite; i++) {
614 if (!strncmp(xbt_log_priority_names[i], neweq, p - eq)) {
615 XBT_DEBUG("This is priority %d", i);
620 if(i<XBT_LOG_STATIC_THRESHOLD){
622 "Priority '%s' (in setting '%s') is above allowed priority '%s'.\n\n"
623 "Compiling SimGrid with -DNDEBUG forbids the levels 'trace' and 'debug'\n"
624 "while -DNLOG forbids any logging, at any level.",
625 eq + 1, name, xbt_log_priority_names[XBT_LOG_STATIC_THRESHOLD]);
627 }else if (i < xbt_log_priority_infinite) {
628 set->thresh = (e_xbt_log_priority_t) i;
631 "Unknown priority name: %s (must be one of: trace,debug,verbose,info,warning,error,critical)", eq + 1);
634 } else if (!strncmp(dot + 1, "add", (size_t) (eq - dot - 1)) ||
635 !strncmp(dot + 1, "additivity", (size_t) (eq - dot - 1))) {
636 char *neweq = xbt_strdup(eq + 1);
639 while (*(++p) != '\0') {
640 if (*p >= 'a' && *p <= 'z') {
644 if (!strcmp(neweq, "ON") || !strcmp(neweq, "YES") || !strcmp(neweq, "1")) {
650 } else if (!strncmp(dot + 1, "app", (size_t) (eq - dot - 1)) ||
651 !strncmp(dot + 1, "appender", (size_t) (eq - dot - 1))) {
652 char *neweq = xbt_strdup(eq + 1);
654 if (!strncmp(neweq, "file:", 5)) {
655 set->appender = xbt_log_appender_file_new(neweq + 5);
656 }else if (!strncmp(neweq, "rollfile:", 9)) {
657 set->appender = xbt_log_appender2_file_new(neweq + 9,1);
658 }else if (!strncmp(neweq, "splitfile:", 10)) {
659 set->appender = xbt_log_appender2_file_new(neweq + 10,0);
661 THROWF(arg_error, 0, "Unknown appender log type: '%s'", neweq);
664 } else if (!strncmp(dot + 1, "fmt", (size_t) (eq - dot - 1))) {
665 set->fmt = xbt_strdup(eq + 1);
668 snprintf(buff, MIN(512, eq - dot), "%s", dot + 1);
669 THROWF(arg_error, 0, "Unknown setting of the log category: '%s'", buff);
671 set->catname = (char *) xbt_malloc(dot - name + 1);
673 memcpy(set->catname, name, dot - name);
674 set->catname[dot - name] = '\0'; /* Just in case */
675 XBT_DEBUG("This is for cat '%s'", set->catname);
680 static xbt_log_category_t _xbt_log_cat_searchsub(xbt_log_category_t cat, char *name)
682 xbt_log_category_t child, res;
684 XBT_DEBUG("Search '%s' into '%s' (firstChild='%s'; nextSibling='%s')", name,
685 cat->name, (cat->firstChild ? cat->firstChild->name : "none"),
686 (cat->nextSibling ? cat->nextSibling->name : "none"));
687 if (!strcmp(cat->name, name))
690 for (child = cat->firstChild; child != NULL; child = child->nextSibling) {
691 XBT_DEBUG("Dig into %s", child->name);
692 res = _xbt_log_cat_searchsub(child, name);
702 * \param control_string What to parse
704 * Typically passed a command-line argument. The string has the syntax:
706 * ( [category] "." [keyword] ":" value (" ")... )...
708 * where [category] is one the category names (see \ref XBT_log_cats for a complete list of the ones defined in the
709 * SimGrid library) and keyword is one of the following:
711 * - thres: category's threshold priority. Possible values:
712 * TRACE,DEBUG,VERBOSE,INFO,WARNING,ERROR,CRITICAL
713 * - add or additivity: whether the logging actions must be passed to the parent category.
714 * Possible values: 0, 1, no, yes, on, off.
715 * Default value: yes.
716 * - fmt: the format to use. See \ref log_use_conf_fmt for more information.
717 * - app or appender: the appender to use. See \ref log_use_conf_app for more information.
719 void xbt_log_control_set(const char *control_string)
721 xbt_log_setting_t set;
723 /* To split the string in commands, and the cursors */
724 xbt_dynar_t set_strings;
730 XBT_DEBUG("Parse log settings '%s'", control_string);
732 /* Special handling of no_loc request, which asks for any file localization to be omitted (for tesh runs) */
733 if (!strcmp(control_string, "no_loc")) {
737 /* some initialization if this is the first time that this get called */
738 if (xbt_log_settings == NULL)
739 xbt_log_settings = xbt_dynar_new(sizeof(xbt_log_setting_t), _free_setting);
741 /* split the string, and remove empty entries */
742 set_strings = xbt_str_split_quoted(control_string);
744 if (xbt_dynar_is_empty(set_strings)) { /* vicious user! */
745 xbt_dynar_free(&set_strings);
749 /* Parse each entry and either use it right now (if the category was already created), or store it for further use */
750 xbt_dynar_foreach(set_strings, cpt, str) {
751 xbt_log_category_t cat = NULL;
753 set = _xbt_log_parse_setting(str);
754 cat = _xbt_log_cat_searchsub(&_XBT_LOGV(XBT_LOG_ROOT_CAT), set->catname);
757 XBT_DEBUG("Apply directly");
758 _xbt_log_cat_apply_set(cat, set);
759 _free_setting((void *) &set);
761 XBT_DEBUG("Store for further application");
762 XBT_DEBUG("push %p to the settings", (void *) set);
763 xbt_dynar_push(xbt_log_settings, &set);
766 xbt_dynar_free(&set_strings);
769 void xbt_log_appender_set(xbt_log_category_t cat, xbt_log_appender_t app)
772 if (cat->appender->free_)
773 cat->appender->free_(cat->appender);
779 void xbt_log_layout_set(xbt_log_category_t cat, xbt_log_layout_t lay)
781 #define _xbt_log_cat_init(a, b) (0)
782 if (!cat->appender) {
783 XBT_VERB ("No appender to category %s. Setting the file appender as default", cat->name);
784 xbt_log_appender_set(cat, xbt_log_appender_file_new(NULL));
787 if (cat->layout->free_) {
788 cat->layout->free_(cat->layout);
793 xbt_log_additivity_set(cat, 0);
794 #undef _xbt_log_cat_init
797 void xbt_log_additivity_set(xbt_log_category_t cat, int additivity)
799 cat->additivity = additivity;
802 static void xbt_log_help(void)
805 "Description of the logging output:\n"
807 " Threshold configuration: --log=CATEGORY_NAME.thres:PRIORITY_LEVEL\n"
808 " CATEGORY_NAME: defined in code with function 'XBT_LOG_NEW_CATEGORY'\n"
809 " PRIORITY_LEVEL: the level to print (trace,debug,verbose,info,warning,error,critical)\n"
810 " -> trace: enter and return of some functions\n"
811 " -> debug: crufty output\n"
812 " -> verbose: verbose output for the user wanting more\n"
813 " -> info: output about the regular functionning\n"
814 " -> warning: minor issue encountered\n"
815 " -> error: issue encountered\n"
816 " -> critical: major issue encountered\n"
818 " Format configuration: --log=CATEGORY_NAME.fmt:OPTIONS\n"
820 " -> %%%%: the %% char\n"
821 " -> %%n: platform-dependent line separator (LOG4J compatible)\n"
822 " -> %%e: plain old space (SimGrid extension)\n"
824 " -> %%m: user-provided message\n"
826 " -> %%c: Category name (LOG4J compatible)\n"
827 " -> %%p: Priority name (LOG4J compatible)\n"
829 " -> %%h: Hostname (SimGrid extension)\n"
830 " -> %%P: Process name (SimGrid extension)\n"
831 " -> %%t: Thread \"name\" (LOG4J compatible -- actually the address of the thread in memory)\n"
832 " -> %%i: Process PID (SimGrid extension -- this is a 'i' as in 'i'dea)\n"
834 " -> %%F: file name where the log event was raised (LOG4J compatible)\n"
835 " -> %%l: location where the log event was raised (LOG4J compatible, like '%%F:%%L' -- this is a l as in 'l'etter)\n"
836 " -> %%L: line number where the log event was raised (LOG4J compatible)\n"
837 " -> %%M: function name (LOG4J compatible -- called method name here of course).\n"
838 " Defined only when using gcc because there is no __FUNCTION__ elsewhere.\n"
840 " -> %%b: full backtrace (Called %%throwable in LOG4J). Defined only under windows or when using the GNU libc because\n"
841 " backtrace() is not defined elsewhere, and we only have a fallback for windows boxes, not mac ones for example.\n"
842 " -> %%B: short backtrace (only the first line of the %%b). Called %%throwable{short} in LOG4J; defined where %%b is.\n"
844 " -> %%d: date (UNIX-like epoch)\n"
845 " -> %%r: application age (time elapsed since the beginning of the application)\n"
848 " --help-log-categories Display the current hierarchy of log categories.\n"
849 " --log=no_loc Don't print file names in messages (for tesh tests).\n"
854 static int xbt_log_cat_cmp(const void *pa, const void *pb)
856 xbt_log_category_t a = *(xbt_log_category_t *)pa;
857 xbt_log_category_t b = *(xbt_log_category_t *)pb;
858 return strcmp(a->name, b->name);
861 static void xbt_log_help_categories_rec(xbt_log_category_t category, const char *prefix)
867 xbt_log_category_t cat;
872 if (category->parent) {
873 this_prefix = bprintf("%s \\_ ", prefix);
874 child_prefix = bprintf("%s | ", prefix);
876 this_prefix = xbt_strdup(prefix);
877 child_prefix = xbt_strdup(prefix);
880 dynar = xbt_dynar_new(sizeof(xbt_log_category_t), NULL);
881 for (cat = category ; cat != NULL; cat = cat->nextSibling)
882 xbt_dynar_push_as(dynar, xbt_log_category_t, cat);
884 xbt_dynar_sort(dynar, xbt_log_cat_cmp);
886 for (i = 0; i < xbt_dynar_length(dynar); i++) {
887 if (i == xbt_dynar_length(dynar) - 1 && category->parent)
888 *strrchr(child_prefix, '|') = ' ';
889 cat = xbt_dynar_get_as(dynar, i, xbt_log_category_t);
890 printf("%s%s: %s\n", this_prefix, cat->name, cat->description);
891 xbt_log_help_categories_rec(cat->firstChild, child_prefix);
894 xbt_dynar_free(&dynar);
895 xbt_free(this_prefix);
896 xbt_free(child_prefix);
899 static void xbt_log_help_categories(void)
901 printf("Current log category hierarchy:\n");
902 xbt_log_help_categories_rec(&_XBT_LOGV(XBT_LOG_ROOT_CAT), " ");