src/xbt/xbt_log_layout_simple.cpp

   1 /* layout_simple - a dumb log layout                                        */
   2
   3 /* Copyright (c) 2007-2023. 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 #include "src/xbt/log_private.hpp"
   9 #include "xbt/sysdep.h"
  10 #include <simgrid/actor.h>
  11 #include <simgrid/s4u/Actor.hpp>
  12
  13 #include "simgrid/engine.h" /* simgrid_get_clock */
  14 #include "simgrid/host.h"   /* sg_host_self_get_name */
  15 #include <cstdio>
  16
  17 extern int xbt_log_no_loc;
  18
  19 #define check_overflow(len)                                                                                            \
  20   do {                                                                                                                 \
  21     rem_size -= (len);                                                                                                 \
  22     if (rem_size <= 0)                                                                                                 \
  23       return false;                                                                                                    \
  24     p += (len);                                                                                                        \
  25   } while (0)
  26
  27 static bool xbt_log_layout_simple_doit(const s_xbt_log_layout_t*, xbt_log_event_t ev, const char* fmt)
  28 {
  29   char *p = ev->buffer;
  30   int rem_size = ev->buffer_size;
  31   const char *procname;
  32   int len;
  33
  34   *p = '[';
  35   check_overflow(1);
  36
  37   /* Display the proc info if available */
  38   procname = sg_actor_self_get_name();
  39   if (procname && strcmp(procname,"maestro")) {
  40     len = snprintf(p, rem_size, "%s:%s:(%ld) ", sg_host_self_get_name(), procname, sg_actor_self_get_pid());
  41     check_overflow(len);
  42   } else if (not procname) {
  43     len = snprintf(p, rem_size, "%s::(%ld) ", sg_host_self_get_name(), sg_actor_self_get_pid());
  44     check_overflow(len);
  45   }
  46
  47   /* Display the date */
  48   len = snprintf(p, rem_size, "%f] ", simgrid_get_clock());
  49   check_overflow(len);
  50
  51   /* Display file position if not INFO */
  52   if (ev->priority != xbt_log_priority_info && not xbt_log_no_loc) {
  53     len = snprintf(p, rem_size, "%s:%d: ", ev->fileName, ev->lineNum);
  54     check_overflow(len);
  55   }
  56
  57   /* Display category name */
  58   len = snprintf(p, rem_size, "[%s/%s] ", ev->cat->name, xbt_log_priority_names[ev->priority]);
  59   check_overflow(len);
  60
  61   /* Display user-provided message */
  62   len = vsnprintf(p, rem_size, fmt, ev->ap);
  63   check_overflow(len);
  64
  65   /* End it */
  66   *p = '\n';
  67   check_overflow(1);
  68   *p = '\0';
  69
  70   return true;
  71 }
  72
  73 xbt_log_layout_t xbt_log_layout_simple_new(const char*)
  74 {
  75   auto* res      = xbt_new0(s_xbt_log_layout_t, 1);
  76   res->do_layout = &xbt_log_layout_simple_doit;
  77
  78   return res;
  79 }