| 1 | #ifndef _CEXCEPTION_H␊ |
| 2 | #define _CEXCEPTION_H␊ |
| 3 | ␊ |
| 4 | #include <setjmp.h>␊ |
| 5 | ␊ |
| 6 | #ifdef __cplusplus␊ |
| 7 | extern "C"␊ |
| 8 | {␊ |
| 9 | #endif␊ |
| 10 | ␉␊ |
| 11 | #define CEXCEPTION_USE_CONFIG_FILE␊ |
| 12 | ␉␊ |
| 13 | ␉//To Use CException, you have a number of options:␊ |
| 14 | ␉//1. Just include it and run with the defaults␊ |
| 15 | ␉//2. Define any of the following symbols at the command line to override them␊ |
| 16 | ␉//3. Include a header file before CException.h everywhere which defines any of these␊ |
| 17 | ␉//4. Create an Exception.h in your path, and just define EXCEPTION_USE_CONFIG_FILE first␊ |
| 18 | ␉␊ |
| 19 | #ifdef CEXCEPTION_USE_CONFIG_FILE␊ |
| 20 | #include "CExceptionConfig.h"␊ |
| 21 | #endif␊ |
| 22 | ␉␊ |
| 23 | ␉//This is the value to assign when there isn't an exception␊ |
| 24 | #ifndef CEXCEPTION_NONE␊ |
| 25 | #define CEXCEPTION_NONE (0x5A5A5A5A)␊ |
| 26 | #endif␊ |
| 27 | ␊ |
| 28 | #ifndef EXIT_SUCCESS␊ |
| 29 | #define EXIT_SUCCESS (1)␊ |
| 30 | #endif␊ |
| 31 | ␉␊ |
| 32 | #ifndef EXIT_FAILURE␊ |
| 33 | #define EXIT_FAILURE (-1)␊ |
| 34 | #endif␊ |
| 35 | ␉␊ |
| 36 | #ifndef SIGABRT␊ |
| 37 | #define SIGABRT (-2)␊ |
| 38 | #endif␊ |
| 39 | ␊ |
| 40 | ␉//This is number of exception stacks to keep track of (one per task)␊ |
| 41 | #ifndef CEXCEPTION_NUM_ID␊ |
| 42 | #define CEXCEPTION_NUM_ID (1) //there is only the one stack by default␊ |
| 43 | #endif␊ |
| 44 | ␉␊ |
| 45 | ␉//This is the method of getting the current exception stack index (0 if only one stack)␊ |
| 46 | #ifndef CEXCEPTION_GET_ID␊ |
| 47 | #define CEXCEPTION_GET_ID (0) //use the first index always because there is only one anyway␊ |
| 48 | #endif␊ |
| 49 | ␉␊ |
| 50 | ␉//The type to use to store the exception values.␊ |
| 51 | #ifndef CEXCEPTION_T␊ |
| 52 | #define CEXCEPTION_T unsigned int␊ |
| 53 | #endif␊ |
| 54 | ␉␊ |
| 55 | ␉//This is an optional special handler for when there is no global Catch␊ |
| 56 | #ifndef CEXCEPTION_NO_CATCH_HANDLER␊ |
| 57 | #define CEXCEPTION_NO_CATCH_HANDLER(id)␊ |
| 58 | #endif␊ |
| 59 | ␉␊ |
| 60 | ␉//exception frame structures␊ |
| 61 | ␉typedef struct {␊ |
| 62 | ␉␉jmp_buf* pFrame;␊ |
| 63 | ␉␉CEXCEPTION_T volatile Exception;␊ |
| 64 | ␉} CEXCEPTION_FRAME_T;␊ |
| 65 | ␉␊ |
| 66 | ␉//actual root frame storage (only one if single-tasking)␊ |
| 67 | ␉extern volatile CEXCEPTION_FRAME_T CExceptionFrames[];␊ |
| 68 | ␉␊ |
| 69 | ␉//Try (see C file for explanation)␊ |
| 70 | #define Try␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 71 | {␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 72 | jmp_buf *PrevFrame, NewFrame; \␊ |
| 73 | unsigned int MY_ID = CEXCEPTION_GET_ID; \␊ |
| 74 | PrevFrame = CExceptionFrames[CEXCEPTION_GET_ID].pFrame; \␊ |
| 75 | CExceptionFrames[MY_ID].pFrame = (jmp_buf*)(&NewFrame); \␊ |
| 76 | CExceptionFrames[MY_ID].Exception = CEXCEPTION_NONE; \␊ |
| 77 | if (setjmp(NewFrame) == 0) { \␊ |
| 78 | if (1)␊ |
| 79 | ␉␊ |
| 80 | ␉//Catch (see C file for explanation)␊ |
| 81 | #define Catch(e)␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 82 | else { } \␊ |
| 83 | CExceptionFrames[MY_ID].Exception = CEXCEPTION_NONE; \␊ |
| 84 | } \␊ |
| 85 | else \␊ |
| 86 | { e = CExceptionFrames[MY_ID].Exception; e=e; } \␊ |
| 87 | CExceptionFrames[MY_ID].pFrame = PrevFrame; \␊ |
| 88 | }␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 89 | if (Install_Default_Handler()) \␊ |
| 90 | if (CExceptionFrames[CEXCEPTION_GET_ID].Exception != CEXCEPTION_NONE)␊ |
| 91 | ␉␊ |
| 92 | ␉␊ |
| 93 | ␉//Throw an Error␊ |
| 94 | ␉void Throw(CEXCEPTION_T ExceptionID);␊ |
| 95 | ␉int Install_Default_Handler(void);␊ |
| 96 | ␉␊ |
| 97 | ␉␊ |
| 98 | #ifdef DEBUG_ALL_EXIT␊ |
| 99 | #define exit(e) \␊ |
| 100 | ((void) (__exit (#e,e, __FILE__, __LINE__)))␊ |
| 101 | #define __exit(estr, e, file, line) \␊ |
| 102 | ((void)printf ("%s:%u: exit status `%s'\n", file, line, estr), Throw(e))␊ |
| 103 | #else␊ |
| 104 | #define exit(e) \␊ |
| 105 | ((void) ((e == 0) ? Throw(EXIT_SUCCESS) : __exit (#e, e, __FILE__, __LINE__)))␊ |
| 106 | #define __exit(estr, e, file, line) \␊ |
| 107 | ((void)printf ("%s:%u: exit status `%s'\n", file, line, estr), Throw(e))␊ |
| 108 | #endif␊ |
| 109 | ␉␊ |
| 110 | ␉␊ |
| 111 | #define abort() \␊ |
| 112 | ((void) (__abort ( __FILE__, __LINE__)))␊ |
| 113 | #define __abort(file, line) \␊ |
| 114 | ((void)printf ("%s:%u: aborted \n", file, line), Throw(SIGABRT))␊ |
| 115 | ␉␊ |
| 116 | #ifdef __cplusplus␊ |
| 117 | } // extern "C"␊ |
| 118 | #endif␊ |
| 119 | ␊ |
| 120 | ␊ |
| 121 | #endif // _CEXCEPTION_H␊ |
| 122 | |
