LCOV - code coverage report
Current view: top level - gdk - gdk_tracer.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 149 265 56.2 %
Date: 2024-04-26 00:35:57 Functions: 14 25 56.0 %

          Line data    Source code
       1             : /*
       2             :  * SPDX-License-Identifier: MPL-2.0
       3             :  *
       4             :  * This Source Code Form is subject to the terms of the Mozilla Public
       5             :  * License, v. 2.0.  If a copy of the MPL was not distributed with this
       6             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       7             :  *
       8             :  * Copyright 2024 MonetDB Foundation;
       9             :  * Copyright August 2008 - 2023 MonetDB B.V.;
      10             :  * Copyright 1997 - July 2008 CWI.
      11             :  */
      12             : 
      13             : #include "monetdb_config.h"
      14             : #include "gdk.h"
      15             : #include "gdk_tracer.h"
      16             : #include "gdk_private.h"
      17             : #include "mutils.h"
      18             : 
      19             : #define DEFAULT_ADAPTER BASIC
      20             : #define DEFAULT_LOG_LEVEL M_ERROR
      21             : #define DEFAULT_FLUSH_LEVEL M_DEBUG
      22             : 
      23             : #define FILE_NAME "mdbtrace.log"
      24             : 
      25             : #define AS_STR(x) #x
      26             : #define STR(x) AS_STR(x)
      27             : 
      28             : #define GENERATE_STRING(STRING) #STRING,
      29             : 
      30             : static FILE *active_tracer;
      31             : MT_Lock GDKtracer_lock = MT_LOCK_INITIALIZER(GDKtracer_lock);
      32             : 
      33             : static char *file_name;
      34             : 
      35             : static ATOMIC_TYPE cur_adapter = ATOMIC_VAR_INIT(DEFAULT_ADAPTER);
      36             : 
      37             : static log_level_t cur_flush_level = DEFAULT_FLUSH_LEVEL;
      38             : 
      39             : static bool write_to_tracer = false;
      40             : 
      41             : #define GENERATE_LOG_LEVEL(COMP) ATOMIC_VAR_INIT((ATOMIC_BASE_TYPE) DEFAULT_LOG_LEVEL),
      42             : ATOMIC_TYPE lvl_per_component[] = {
      43             :         FOREACH_COMP(GENERATE_LOG_LEVEL)
      44             : };
      45             : 
      46             : static const char *adapter_str[] = {
      47             :         FOREACH_ADPTR(GENERATE_STRING)
      48             : };
      49             : 
      50             : static const char *layer_str[] = {
      51             :         FOREACH_LAYER(GENERATE_STRING)
      52             : };
      53             : 
      54             : static const char *component_str[] = {
      55             :         FOREACH_COMP(GENERATE_STRING)
      56             : };
      57             : 
      58             : static const char *level_str[] = {
      59             :         FOREACH_LEVEL(GENERATE_STRING)
      60             : };
      61             : 
      62             : 
      63             : #define MXW "20"
      64             : 
      65             : #define TS_SIZE ((size_t) 20)   /* buffer size needed for timestamp */
      66             : 
      67             : 
      68             : /*
      69             :  * GDKtracer Stream Macros
      70             :  */
      71             : // Exception
      72             : #define GDK_TRACER_EXCEPTION(MSG, ...)                          \
      73             :         fprintf(stderr,                                         \
      74             :                 "%s "                                         \
      75             :                 "%-"MXW"s "                                 \
      76             :                 "%"MXW"s:%d "                                       \
      77             :                 "%"MXW"s "                                  \
      78             :                 "%-"MXW"s "                                 \
      79             :                 "%-"MXW"s # "MSG,                           \
      80             :                 get_timestamp((char[TS_SIZE]){0}, TS_SIZE),     \
      81             :                 __FILE__,                                       \
      82             :                 __func__,                                       \
      83             :                 __LINE__,                                       \
      84             :                 STR(M_CRITICAL),                                \
      85             :                 STR(GDK_TRACER),                                \
      86             :                 MT_thread_getname(),                            \
      87             :                 ## __VA_ARGS__);
      88             : 
      89             : 
      90             : #define GDK_TRACER_RESET_OUTPUT()                                       \
      91             :         do {                                                            \
      92             :                 write_to_tracer = false;                                \
      93             :                 for (int i = 0; !write_to_tracer && i < (int) COMPONENTS_COUNT; i++) {       \
      94             :                         write_to_tracer = (log_level_t) ATOMIC_GET(&lvl_per_component[i]) > DEFAULT_LOG_LEVEL; \
      95             :                 }                                                       \
      96             :         } while(0)
      97             : 
      98             : static inline char *
      99      278388 : get_timestamp(char *datetime, size_t dtsz)
     100             : {
     101      278388 :         time_t now = time(NULL);
     102      278610 :         struct tm tmp;
     103      278610 :         (void) localtime_r(&now, &tmp);
     104      279336 :         strftime(datetime, dtsz, "%Y-%m-%d %H:%M:%S", &tmp);
     105             : 
     106      279336 :         return datetime;
     107             : }
     108             : 
     109             : 
     110             : // When BASIC adapter is active, all the log messages are getting printed to a file.
     111             : // This function prepares a file in order to write the contents of the buffer when necessary.
     112             : static gdk_return
     113         675 : GDKtracer_init_trace_file(const char *dbpath, const char *dbtrace)
     114             : {
     115         675 :         char *fn;
     116             : 
     117             :         /* we use malloc/free instead of GDKmalloc/GDKfree to avoid
     118             :          * possible recursion */
     119             : #undef malloc
     120             : #undef free
     121         675 :         if (dbtrace == NULL) {
     122         675 :                 write_to_tracer = false;
     123         675 :                 if (dbpath == NULL) {
     124         333 :                         active_tracer = stderr;
     125         333 :                         return GDK_SUCCEED;
     126             :                 }
     127         342 :                 size_t fnl = strlen(dbpath) + strlen(DIR_SEP_STR) + strlen(FILE_NAME) + 1;
     128         342 :                 fn = malloc(fnl);
     129         342 :                 if (fn == NULL) {
     130           0 :                         GDK_TRACER_EXCEPTION("malloc failure\n");
     131           0 :                         active_tracer = stderr;
     132           0 :                         return GDK_FAIL;
     133             :                 }
     134         342 :                 if (strconcat_len(fn, fnl, dbpath, DIR_SEP_STR, FILE_NAME, NULL)
     135             :                     >= fnl) {
     136             :                         /* cannot happen */
     137           0 :                         goto too_long;
     138             :                 }
     139             :         } else {
     140           0 :                 write_to_tracer = true;
     141           0 :                 size_t fnl = strlen(dbtrace) + 1;
     142           0 :                 fn = malloc(fnl);
     143           0 :                 if (fn == NULL) {
     144           0 :                         GDK_TRACER_EXCEPTION("malloc failure\n");
     145           0 :                         active_tracer = stderr;
     146           0 :                         return GDK_FAIL;
     147             :                 }
     148           0 :                 if (strcpy_len(fn, dbtrace, fnl)
     149             :                     >= fnl) {
     150             :                         /* cannot happen */
     151           0 :                         goto too_long;
     152             :                 }
     153             :         }
     154         342 :         free(file_name);
     155         342 :         file_name = fn;
     156             : 
     157         342 :         active_tracer = MT_fopen(file_name, "a");
     158             : 
     159         342 :         if (active_tracer == NULL) {
     160           0 :                 GDK_TRACER_EXCEPTION("Failed to open %s: %s\n", file_name,
     161           0 :                                      GDKstrerror(errno, (char[64]){0}, 64));
     162             :                 /* uninitialize */
     163           0 :                 free(file_name);
     164           0 :                 file_name = NULL;
     165           0 :                 active_tracer = stderr;
     166           0 :                 return GDK_FAIL;
     167             :         }
     168             : 
     169             :         return GDK_SUCCEED;
     170             : 
     171           0 :   too_long:
     172           0 :         GDK_TRACER_EXCEPTION("path name for dbtrace file too long\n");
     173             :         /* uninitialize */
     174           0 :         free(fn);
     175           0 :         free(file_name);
     176           0 :         file_name = NULL;
     177           0 :         active_tracer = stderr;
     178           0 :         return GDK_FAIL;
     179             : }
     180             : 
     181             : static gdk_return
     182         332 : _GDKtracer_init_basic_adptr(void)
     183             : {
     184         332 :         return GDKtracer_init_trace_file(GDKgetenv("gdk_dbpath"),
     185             :                                          GDKgetenv("gdk_dbtrace"));
     186             : }
     187             : 
     188             : static void
     189         339 : set_level_for_layer(int layer, log_level_t level)
     190             : {
     191         339 :         const char *tok = NULL;
     192             : 
     193             :         // make sure we initialize before changing the component level
     194         339 :         MT_lock_set(&GDKtracer_lock);
     195         339 :         if (file_name == NULL) {
     196           1 :                 _GDKtracer_init_basic_adptr();
     197             :         }
     198         339 :         MT_lock_unset(&GDKtracer_lock);
     199             : 
     200        9153 :         for (int i = 0; i < COMPONENTS_COUNT; i++) {
     201        8814 :                 if (layer == MDB_ALL) {
     202        8814 :                         ATOMIC_SET(&lvl_per_component[i], (ATOMIC_BASE_TYPE) level);
     203             :                 } else {
     204           0 :                         tok = component_str[i];
     205             : 
     206           0 :                         switch (layer) {
     207           0 :                         case SQL_ALL:
     208           0 :                                 if (strncmp(tok, "SQL_", 4) == 0)
     209           0 :                                         ATOMIC_SET(&lvl_per_component[i], (ATOMIC_BASE_TYPE) level);
     210             :                                 break;
     211           0 :                         case MAL_ALL:
     212           0 :                                 if (strncmp(tok, "MAL_", 4) == 0)
     213           0 :                                         ATOMIC_SET(&lvl_per_component[i], (ATOMIC_BASE_TYPE) level);
     214             :                                 break;
     215           0 :                         case GDK_ALL:
     216           0 :                                 if (strncmp(tok, "GDK", 3) == 0)
     217           0 :                                         ATOMIC_SET(&lvl_per_component[i], (ATOMIC_BASE_TYPE) level);
     218             :                                 break;
     219             :                         default:
     220             :                                 break;
     221             :                         }
     222             :                 }
     223             :         }
     224         339 :         MT_lock_set(&GDKtracer_lock);
     225        9153 :         GDK_TRACER_RESET_OUTPUT();
     226         339 :         MT_lock_unset(&GDKtracer_lock);
     227         339 : }
     228             : 
     229             : static inline adapter_t
     230           1 : find_adapter(const char *adptr)
     231             : {
     232           1 :         if (adptr == NULL)
     233             :                 return ADAPTERS_COUNT;
     234             : 
     235           3 :         for (int i = 0; i < (int) ADAPTERS_COUNT; i++) {
     236           3 :                 if (strcasecmp(adapter_str[i], adptr) == 0) {
     237           1 :                         return (adapter_t) i;
     238             :                 }
     239             :         }
     240             :         return ADAPTERS_COUNT;
     241             : }
     242             : 
     243             : static inline log_level_t
     244         463 : find_level(const char *lvl)
     245             : {
     246         463 :         if (lvl == NULL)
     247             :                 return LOG_LEVELS_COUNT;
     248             : 
     249        2201 :         for (int i = 0; i < (int) LOG_LEVELS_COUNT; i++) {
     250        2201 :                 if (strcasecmp(level_str[i] + 2, lvl) == 0) {
     251         463 :                         return (log_level_t) i;
     252             :                 }
     253             :         }
     254             :         return LOG_LEVELS_COUNT;
     255             : }
     256             : 
     257             : static inline layer_t
     258           0 : find_layer(const char *layer)
     259             : {
     260           0 :         if (layer == NULL)
     261             :                 return LAYERS_COUNT;
     262           0 :         for (int i = 0; i < (int) LAYERS_COUNT; i++) {
     263           0 :                 if (strcasecmp(layer_str[i], layer) == 0) {
     264           0 :                         return (layer_t) i;
     265             :                 }
     266             :         }
     267             :         return LAYERS_COUNT;
     268             : }
     269             : 
     270             : static inline component_t
     271        4542 : find_component(const char *comp)
     272             : {
     273             :         /* special case for the (currently) three components that end in _ */
     274        4542 :         if (comp == NULL || *comp == 0 || comp[strlen(comp) - 1] == '_')
     275             :                 return COMPONENTS_COUNT;
     276        4542 :         if (strcasecmp(comp, "io") == 0)
     277             :                 comp = "io_";
     278        4173 :         else if (strcasecmp(comp, "bat") == 0)
     279             :                 comp = "bat_";
     280        3804 :         else if (strcasecmp(comp, "check") == 0)
     281         369 :                 comp = "check_";
     282             : 
     283       32538 :         for (int i = 0; i < (int) COMPONENTS_COUNT; i++) {
     284       32538 :                 if (strcasecmp(component_str[i], comp) == 0) {
     285        4542 :                         return (component_t) i;
     286             :                 }
     287             :         }
     288             :         return COMPONENTS_COUNT;
     289             : }
     290             : 
     291             : 
     292             : 
     293             : /**
     294             :  *
     295             :  * API CALLS
     296             :  *
     297             :  */
     298             : static volatile sig_atomic_t interrupted = 0;
     299             : 
     300             : void
     301           0 : GDKtracer_reinit_basic(int sig)
     302             : {
     303           0 :         (void) sig;
     304           0 :         interrupted = 1;
     305           0 : }
     306             : 
     307             : static void
     308           0 : reinit(void)
     309             : {
     310             :         /* called locked */
     311             : 
     312           0 :         interrupted = 0;
     313             : 
     314             :         // GDKtracer needs to reopen the file only in
     315             :         // case the adapter is BASIC
     316           0 :         if ((adapter_t) ATOMIC_GET(&cur_adapter) != BASIC)
     317             :                 return;
     318             : 
     319           0 :         if (active_tracer) {
     320           0 :                 if (active_tracer != stderr)
     321           0 :                         fclose(active_tracer);
     322             :                 else
     323           0 :                         fflush(active_tracer);
     324           0 :                 active_tracer = NULL;
     325             :         }
     326           0 :         _GDKtracer_init_basic_adptr();
     327             : }
     328             : 
     329             : 
     330             : gdk_return
     331         339 : GDKtracer_stop(void)
     332             : {
     333         339 :         set_level_for_layer(MDB_ALL, DEFAULT_LOG_LEVEL);
     334         339 :         if (active_tracer) {
     335         339 :                 if (active_tracer != stderr)
     336         338 :                         fclose(active_tracer);
     337             :                 else
     338           1 :                         fflush(active_tracer);
     339         339 :                 active_tracer = NULL;
     340             :         }
     341         339 :         return GDK_SUCCEED;
     342             : }
     343             : 
     344             : gdk_return
     345         463 : GDKtracer_set_component_level(const char *comp, const char *lvl)
     346             : {
     347         463 :         log_level_t level = find_level(lvl);
     348         463 :         component_t component = find_component(comp);
     349             : 
     350         463 :         if (level == LOG_LEVELS_COUNT) {
     351           0 :                 GDKerror("unknown level\n");
     352           0 :                 return GDK_FAIL;
     353             :         }
     354         463 :         if (component == COMPONENTS_COUNT) {
     355           0 :                 GDKerror("unknown component\n");
     356           0 :                 return GDK_FAIL;
     357             :         }
     358             : 
     359             :         // make sure we initialize before changing the component level
     360         463 :         MT_lock_set(&GDKtracer_lock);
     361         463 :         if (file_name == NULL) {
     362         331 :                 _GDKtracer_init_basic_adptr();
     363             :         }
     364         463 :         write_to_tracer |= level > DEFAULT_LOG_LEVEL;
     365         463 :         MT_lock_unset(&GDKtracer_lock);
     366             : 
     367         463 :         ATOMIC_SET(&lvl_per_component[component], (ATOMIC_BASE_TYPE) level);
     368             : 
     369         463 :         return GDK_SUCCEED;
     370             : }
     371             : 
     372             : const char *
     373         228 : GDKtracer_get_component_level(const char *comp)
     374             : {
     375         228 :         component_t component = find_component(comp);
     376             : 
     377         228 :         if (component == COMPONENTS_COUNT) {
     378           0 :                 GDKerror("unknown component\n");
     379           0 :                 return NULL;
     380             :         }
     381         228 :         return level_str[ATOMIC_GET(&lvl_per_component[component])];
     382             : }
     383             : 
     384             : 
     385             : gdk_return
     386        3851 : GDKtracer_reset_component_level(const char *comp)
     387             : {
     388        3851 :         component_t component = find_component(comp);
     389             : 
     390        3851 :         if (component == COMPONENTS_COUNT) {
     391           0 :                 GDKerror("unknown component\n");
     392           0 :                 return GDK_FAIL;
     393             :         }
     394        3851 :         ATOMIC_SET(&lvl_per_component[component], (ATOMIC_BASE_TYPE) DEFAULT_LOG_LEVEL);
     395        3851 :         MT_lock_set(&GDKtracer_lock);
     396       51030 :         GDK_TRACER_RESET_OUTPUT();
     397        3851 :         MT_lock_unset(&GDKtracer_lock);
     398             : 
     399        3851 :         return GDK_SUCCEED;
     400             : }
     401             : 
     402             : 
     403             : gdk_return
     404           0 : GDKtracer_set_layer_level(const char *layer, const char *lvl)
     405             : {
     406           0 :         layer_t lyr = find_layer(layer);
     407           0 :         log_level_t level = find_level(lvl);
     408           0 :         if (level == LOG_LEVELS_COUNT) {
     409           0 :                 GDKerror("unknown level\n");
     410           0 :                 return GDK_FAIL;
     411             :         }
     412           0 :         if (lyr == LAYERS_COUNT) {
     413           0 :                 GDKerror("unknown layer\n");
     414           0 :                 return GDK_FAIL;
     415             :         }
     416             : 
     417           0 :         set_level_for_layer(lyr, level);
     418           0 :         return GDK_SUCCEED;
     419             : }
     420             : 
     421             : 
     422             : gdk_return
     423           0 : GDKtracer_reset_layer_level(const char *layer)
     424             : {
     425           0 :         layer_t lyr = find_layer(layer);
     426           0 :         if (lyr == LAYERS_COUNT) {
     427           0 :                 GDKerror("unknown layer\n");
     428           0 :                 return GDK_FAIL;
     429             :         }
     430             : 
     431           0 :         set_level_for_layer(lyr, DEFAULT_LOG_LEVEL);
     432           0 :         return GDK_SUCCEED;
     433             : }
     434             : 
     435             : 
     436             : gdk_return
     437           0 : GDKtracer_set_flush_level(const char *lvl)
     438             : {
     439           0 :         log_level_t level = find_level(lvl);
     440           0 :         if (level == LOG_LEVELS_COUNT) {
     441           0 :                 GDKerror("unknown level\n");
     442           0 :                 return GDK_FAIL;
     443             :         }
     444             : 
     445           0 :         cur_flush_level = level;
     446           0 :         return GDK_SUCCEED;
     447             : }
     448             : 
     449             : 
     450             : gdk_return
     451           0 : GDKtracer_reset_flush_level(void)
     452             : {
     453           0 :         cur_flush_level = DEFAULT_FLUSH_LEVEL;
     454           0 :         return GDK_SUCCEED;
     455             : }
     456             : 
     457             : 
     458             : gdk_return
     459           1 : GDKtracer_set_adapter(const char *adapter)
     460             : {
     461           1 :         adapter_t adptr = find_adapter(adapter);
     462           1 :         if (adptr == ADAPTERS_COUNT) {
     463           0 :                 GDKerror("unknown adapter\n");
     464           0 :                 return GDK_FAIL;
     465             :         }
     466             : 
     467             :         // Here when switching between adapters we can open/close the file
     468             :         // But it is not so important to keep it open in case the adapter switches
     469             :         // From BASIC to other => close the file
     470             :         // From other to BASIC => open the file
     471             : 
     472           1 :         ATOMIC_SET(&cur_adapter, adptr);
     473             : 
     474           1 :         return GDK_SUCCEED;
     475             : }
     476             : 
     477             : 
     478             : gdk_return
     479           0 : GDKtracer_reset_adapter(void)
     480             : {
     481           0 :         ATOMIC_SET(&cur_adapter, DEFAULT_ADAPTER);
     482           0 :         return GDK_SUCCEED;
     483             : }
     484             : 
     485             : static bool add_ts;             /* add timestamp to error message to stderr */
     486             : 
     487             : gdk_return
     488         343 : GDKtracer_init(const char *dbpath, const char *dbtrace)
     489             : {
     490         343 :         MT_lock_set(&GDKtracer_lock);
     491             : #ifdef _MSC_VER
     492             :         add_ts = GetFileType(GetStdHandle(STD_ERROR_HANDLE)) != FILE_TYPE_PIPE;
     493             : #else
     494         343 :         add_ts = isatty(2) || lseek(2, 0, SEEK_CUR) != (off_t) -1 || errno != ESPIPE;
     495             : #endif
     496         343 :         gdk_return rc = GDKtracer_init_trace_file(dbpath, dbtrace);
     497         343 :         MT_lock_unset(&GDKtracer_lock);
     498         343 :         return rc;
     499             : }
     500             : 
     501             : gdk_return
     502           0 : GDKtracer_set_tracefile(const char *tracefile)
     503             : {
     504           0 :         return GDKtracer_init(NULL, tracefile);
     505             : }
     506             : 
     507             : void
     508      278076 : GDKtracer_log(const char *file, const char *func, int lineno,
     509             :               log_level_t level, component_t comp,
     510             :               const char *syserr,
     511             :               const char *fmt, ...)
     512             : {
     513      278076 :         int bytes_written;
     514      278076 :         char buffer[512];       /* should be plenty big enough for a message */
     515      278076 :         va_list va;
     516      278076 :         char ts[TS_SIZE];
     517      278076 :         char *msg = NULL;
     518      278076 :         bool isexit;
     519      278076 :         static char file_prefix[] = __FILE__;
     520      278076 :         static size_t prefix_length = (size_t) -1;
     521             : 
     522      278076 :         if (prefix_length == (size_t) -1) {
     523             :                 /* first time, calculate prefix of file name */
     524         171 :                 msg = strstr(file_prefix, "gdk" DIR_SEP_STR "gdk_tracer.c");
     525         171 :                 if (msg == NULL)
     526           0 :                         prefix_length = 0;
     527             :                 else
     528         171 :                         prefix_length = (size_t) (msg - file_prefix);
     529             :         }
     530      278076 :         if (prefix_length != 0 &&
     531      278442 :             strncmp(file, file_prefix, prefix_length) == 0)
     532      278423 :                 file += prefix_length;
     533             : 
     534      278076 :         va_start(va, fmt);
     535      278076 :         int pad = (int) strlen(file);
     536      278076 :         pad = (pad > 40) ? 0 : 40 - pad;
     537      278076 :         bytes_written = snprintf(buffer, sizeof(buffer),
     538             :                                  "%s "                /* timestamp */
     539             :                                  "%10s "      /* level */
     540             :                                  "%-8s "      /* component */
     541             :                                  "%-20s "     /* thread name */
     542             :                                  "%s:%-5d %*s"        /* file, lineno, pad */
     543             :                                  "%-20s ",    /* function */
     544             :                                  get_timestamp(ts, sizeof(ts)),
     545             :                                  level_str[level],
     546             :                                  component_str[comp],
     547             :                                  MT_thread_getname(),
     548             :                                  file, lineno, pad, "",
     549             :                                  func);
     550      278919 :         if (bytes_written > 0 && bytes_written < (int) sizeof(buffer)) {
     551      279008 :                 msg = buffer + bytes_written;
     552             :         } else {
     553             :                 /* exceedingly unlikely that we ever come here */
     554             :                 msg = buffer;
     555             :                 bytes_written = 0;
     556             :         }
     557      278919 :         bytes_written = vsnprintf(msg,
     558             :                                   sizeof(buffer) - bytes_written,
     559             :                                   fmt, va);
     560      278919 :         isexit = strstr(msg, EXITING_MSG) != NULL;
     561      278919 :         va_end(va);
     562      278919 :         if (bytes_written < 0) {
     563           0 :                 if ((adapter_t) ATOMIC_GET(&cur_adapter) != MBEDDED)
     564           0 :                         GDK_TRACER_EXCEPTION("Failed to write logs\n");
     565         957 :                 return;
     566             :         }
     567      278919 :         char *p;
     568      278919 :         if ((p = strchr(buffer, '\n')) != NULL)
     569      142919 :                 *p = '\0';
     570             : 
     571      278919 :         if (comp == GDK && level <= M_ERROR) {
     572             :                 /* append message to GDKerrbuf (if set) */
     573        1273 :                 char *buf = GDKerrbuf;
     574        1273 :                 if (buf) {
     575        1271 :                         size_t n = strlen(buf);
     576        3813 :                         snprintf(buf + n, GDKMAXERRLEN - n,
     577             :                                  "%s%s: %s%s%s\n",
     578             :                                  isexit ? "" : GDKERROR,
     579             :                                  func, msg,
     580             :                                  syserr ? ": " : "",
     581             :                                  syserr ? syserr : "");
     582             :                 }
     583             :         }
     584             : 
     585             :         /* don't write to file in embedded case, but set the GDK error buffer */
     586      278919 :         if ((adapter_t) ATOMIC_GET(&cur_adapter) == MBEDDED)
     587             :                 return;
     588             : 
     589      278778 :         MT_lock_set(&GDKtracer_lock);
     590      279346 :         if (interrupted)
     591           0 :                 reinit();
     592             : 
     593      279346 :         if (level <= M_WARNING || (ATOMIC_GET(&GDKdebug) & FORCEMITOMASK)) {
     594      558177 :                 fprintf(level <= M_ERROR && !isexit ? stderr : stdout,
     595             :                         "#%s%s%s: %s: %s: %s%s%s\n",
     596             :                         add_ts ? ts : "",
     597      278963 :                         add_ts ? ": " : "",
     598      278963 :                         MT_thread_getname(), func, level_str[level] + 2,
     599             :                         msg, syserr ? ": " : "",
     600             :                         syserr ? syserr : "");
     601      278963 :                 if (active_tracer == NULL || active_tracer == stderr || !write_to_tracer) {
     602         816 :                         MT_lock_unset(&GDKtracer_lock);
     603         816 :                         return;
     604             :                 }
     605             :         }
     606      278530 :         if (active_tracer == NULL) {
     607           0 :                 MT_lock_unset(&GDKtracer_lock);
     608           0 :                 return;
     609             :         }
     610      278530 :         if (syserr)
     611           0 :                 fprintf(active_tracer, "%s: %s\n", buffer, syserr);
     612             :         else
     613      278530 :                 fprintf(active_tracer, "%s\n", buffer);
     614             : 
     615             :         // Flush the current buffer in case the event is
     616             :         // important depending on the flush-level
     617             :         // Always flush CRITICAL and ERROR messages - prevent cases
     618             :         // like mserver5 refusing to start due to allocated port
     619             :         // and the error is never reported to the user because it
     620             :         // is still in the buffer which it never gets flushed.
     621      278530 :         if (level == cur_flush_level || level <= M_ERROR)
     622       40371 :                 fflush(active_tracer);
     623      278530 :         MT_lock_unset(&GDKtracer_lock);
     624             : }
     625             : 
     626             : 
     627             : gdk_return
     628           0 : GDKtracer_flush_buffer(void)
     629             : {
     630           0 :         if (active_tracer)
     631           0 :                 fflush(active_tracer);
     632           0 :         return GDK_SUCCEED;
     633             : }
     634             : 
     635             : 
     636             : gdk_return
     637           0 : GDKtracer_fill_comp_info(BAT *id, BAT *component, BAT *log_level)
     638             : {
     639           0 :         for (int i = 0; i < COMPONENTS_COUNT; i++) {
     640           0 :                 if (BUNappend(id, &i, false) != GDK_SUCCEED)
     641           0 :                         return GDK_FAIL;
     642             : 
     643           0 :                 if (BUNappend(component, component_str[i], false) != GDK_SUCCEED)
     644             :                         return GDK_FAIL;
     645             : 
     646           0 :                 if (BUNappend(log_level, level_str[ATOMIC_GET(&lvl_per_component[i])], false) != GDK_SUCCEED)
     647             :                         return GDK_FAIL;
     648             :         }
     649             : 
     650           0 :         return GDK_SUCCEED;
     651             : }

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