utils/src/Panic.cpp

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdarg.h>
   4 #include <time.h>
   5 #include "utils.h"
   6
   7 extern "C" void
   8         __attribute__ ((visibility("default")))
   9         __attribute__((weak))
  10         FN_NORETURN
  11                 CustomPanic(const char *format, va_list args) noexcept
  12 {
  13         // default weak implementation
  14         // to be overridden by WinPort implementation if process is hosting it
  15         abort();
  16 }
  17
  18 void FN_NORETURN Panic(const char *format, ...) noexcept
  19 {
  20         va_list args, args4log, args4cust;
  21         va_start(args, format);
  22         va_copy(args4log, args);
  23         va_copy(args4cust, args);
  24         vfprintf(stderr, format, args);
  25         fflush(stderr);
  26         va_end(args);
  27
  28         FILE *flog = fopen(InMyConfig("crash.log").c_str(), "a");
  29         if (flog) {
  30                 time_t now = time(NULL);
  31                 struct tm t{};
  32                 localtime_r(&now, &t);
  33                 fprintf(flog, "[%u/%02u/%02u %02u:%02u] ",
  34                         t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min);
  35                 vfprintf(flog, format, args4log);
  36                 fputc('\n', flog);
  37                 fclose(flog);
  38         }
  39         va_end(args4log);
  40
  41         CustomPanic(format, args4cust);
  42         // --- CustomPanic doesn't return --- va_end(args4cust);
  43 }