src/raw/include/util.h

   1 /*
   2  * useful structures/macros
   3  *
   4  * 2011, Operating Systems
   5  */
   6
   7 #ifndef UTIL_H_
   8 #define UTIL_H_         1
   9
  10 #ifdef __cplusplus
  11 extern "C" {
  12 #endif
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16
  17 #if defined (_WIN32)
  18
  19 #include <windows.h>
  20
  21 static VOID PrintLastError(const PCHAR message)
  22 {
  23         CHAR errBuff[1024];
  24
  25         FormatMessage(
  26                         FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_MAX_WIDTH_MASK,
  27                         NULL,
  28                         GetLastError(),
  29                         0,
  30                         errBuff,
  31                         sizeof(errBuff) - 1,
  32                         NULL);
  33
  34         fprintf(stderr, "%s: %s\n", message, errBuff);
  35 }
  36
  37 #define ERR(call_description)                                   \
  38         do {                                                    \
  39                 fprintf(stderr, "(%s, %d): ",                   \
  40                                 __FILE__, __LINE__);            \
  41                         PrintLastError(call_description);       \
  42         } while (0)
  43
  44 #elif defined (__linux__)
  45
  46 /* error printing macro */
  47 #define ERR(call_description)                           \
  48         do {                                            \
  49                 fprintf(stderr, "(%s, %d): ",           \
  50                                 __FILE__, __LINE__);    \
  51                         perror(call_description);       \
  52         } while (0)
  53
  54 #else
  55   #error "Unknown platform"
  56 #endif
  57
  58 /* print error (call ERR) and exit */
  59 #define DIE(assertion, call_description)                \
  60         do {                                            \
  61                 if (assertion) {                        \
  62                         ERR(call_description);          \
  63                         exit(EXIT_FAILURE);             \
  64                 }                                       \
  65         } while(0)
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70
  71 #endif