StdLibPrivateInternalFiles/Include/MainData.h

   1 /** @file
   2   Global data for the program environment.
   3
   4   Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials are licensed and made available
   6   under the terms and conditions of the BSD License which accompanies this
   7   distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 **/
  13 #include  <Uefi.h>
  14
  15 #include  <stdio.h>
  16 #include  <stdlib.h>
  17 #include  <sys/types.h>
  18 #include  <limits.h>
  19 #include  <signal.h>
  20 #include  <time.h>
  21 #include  <setjmp.h>
  22
  23 #include  <kfile.h>
  24 #include  <Device/Device.h>
  25
  26 #include  "Device/Console.h"
  27
  28 /* ##################  Type Declarations  ################################# */
  29
  30 /** The type of an atexit handler function. **/
  31 typedef void            __xithandler_t(void);
  32
  33 /* ##################  Global Declarations  ############################### */
  34 #ifndef TYPE_BIT
  35 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
  36 #endif /* !defined TYPE_BIT */
  37
  38 #ifndef TYPE_SIGNED
  39 #define TYPE_SIGNED(type) (((type) -1) < 0)
  40 #endif /* !defined TYPE_SIGNED */
  41
  42 #ifndef INT_STRLEN_MAXIMUM
  43 /*
  44 ** 302 / 1000 is log10(2.0) rounded up.
  45 ** Subtract one for the sign bit if the type is signed;
  46 ** add one for integer division truncation;
  47 ** add one more for a minus sign if the type is signed.
  48 */
  49 #define INT_STRLEN_MAXIMUM(type) \
  50 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
  51 #endif /* !defined INT_STRLEN_MAXIMUM */
  52
  53 /*
  54 ** Big enough for something such as
  55 ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
  56 ** (two three-character abbreviations, five strings denoting integers,
  57 ** three explicit spaces, two explicit colons, a newline,
  58 ** and a trailing ASCII nul).
  59 */
  60 #define ASCTIME_BUFLEN  ((2 * 3) + (5 * INT_STRLEN_MAXIMUM(int)) + 3 + 2 + 1 + 1)
  61
  62 struct __filedes;   /* Forward Reference */
  63 struct stat;        /* Forward Reference so I don't have to include <stat.h> */
  64
  65 struct  __MainData {
  66   // File descriptors
  67   struct __filedes  fdarray[OPEN_MAX];
  68   // Low-level File abstractions for the stdin, stdout, stderr streams
  69   ConInstance      *StdIo[3];
  70
  71   // Signal Handlers
  72   __sighandler_t    *sigarray[SIG_LAST];      // Pointers to signal handlers
  73
  74   char              *NArgV[ARGC_MAX];         // Narrow character argv array
  75   char              *NCmdLine;                // Narrow character version of command line arguments.
  76
  77   void (*cleanup)(void);        // Stdio Cleanup Function Pointer
  78
  79   __xithandler_t   *atexit_handler[ATEXIT_MAX];  // Array of handlers for atexit.
  80   clock_t           AppStartTime;                // Set in Main.c and used for time.h
  81   clock_t           ClocksPerSecond;             // Set in Main.c and used for time.h
  82   int               num_atexit;                  ///< Number of registered atexit handlers.
  83
  84   CHAR16            UString[UNICODE_STRING_MAX];
  85   CHAR16            UString2[UNICODE_STRING_MAX];
  86   struct tm         BDTime;                       // Broken-down time structure for localtime.
  87   EFI_TIME          TimeBuffer;                   // Used by <time.h>mk
  88   char              ASgetenv[ASCII_STRING_MAX];   // Only modified by getenv
  89   char              ASasctime[ASCTIME_BUFLEN];    // Only modified by asctime
  90
  91   jmp_buf           MainExit;                     ///< Save environment used for implementing _Exit()
  92   int               ExitValue;                    ///< Value being returned by _Exit()
  93
  94   BOOLEAN         aborting;                       // Ensures cleanup function only called once when aborting.
  95 };
  96
  97 extern struct  __MainData  *gMD;