| 1 | /*␊ |
| 2 | * contains some ideas from the Mark VanderVoord's CException project␊ |
| 3 | *␊ |
| 4 | * Copyright (c) 2012-2013 Cadet-Petit Armel␊ |
| 5 | * All rights reserved.␊ |
| 6 | *␊ |
| 7 | * Redistribution and use in source and binary forms, with or without␊ |
| 8 | * modification, are permitted provided that the following conditions are␊ |
| 9 | * met:␊ |
| 10 | *␊ |
| 11 | * * Redistributions of source code must retain the above copyright␊ |
| 12 | * notice, this list of conditions and the following disclaimer.␊ |
| 13 | *␊ |
| 14 | * * Redistributions in binary form must reproduce the above copyright␊ |
| 15 | * notice, this list of conditions and the following disclaimer in the␊ |
| 16 | * documentation and/or other materials provided with the␊ |
| 17 | * distribution.␊ |
| 18 | *␊ |
| 19 | * * Neither the name of Cadet-Petit Armel nor the names of the␊ |
| 20 | * contributors may be used to endorse or promote products derived␊ |
| 21 | * from this software without specific prior written permission.␊ |
| 22 | *␊ |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS␊ |
| 24 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT␊ |
| 25 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR␊ |
| 26 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT␊ |
| 27 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,␊ |
| 28 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT␊ |
| 29 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
| 30 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
| 31 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
| 32 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE␊ |
| 33 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 34 | */␊ |
| 35 | #include "CException.h"␊ |
| 36 | #include "libsaio.h"␊ |
| 37 | #include "modules.h"␊ |
| 38 | #include "assert.h"␊ |
| 39 | ␊ |
| 40 | static CEXCEPTION_FRAME_T *CExceptionFrames = NULL;␊ |
| 41 | static CEXCEPTION_FRAME_T *CExceptionMainFrames = NULL;␊ |
| 42 | ␊ |
| 43 | #ifdef DEBUG_EXCEPTION␊ |
| 44 | static unsigned long frameCount = 0;␊ |
| 45 | #endif␉␊ |
| 46 | ␊ |
| 47 | //------------------------------------------------------------------------------------------␊ |
| 48 | // Install or Restore Default handler␊ |
| 49 | //------------------------------------------------------------------------------------------␊ |
| 50 | int Install_Default_Handler(void)␊ |
| 51 | {␊ |
| 52 | #define XTRY \␊ |
| 53 | {␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 54 | pushFrame(); \␊ |
| 55 | if ((e = setjmp(CExceptionFrames->cx)) == 0) { \␊ |
| 56 | e = CEXCEPTION_NONE; \␊ |
| 57 | if (1)␊ |
| 58 | ␉␊ |
| 59 | #define XCATCH(e) \␊ |
| 60 | else { } \␊ |
| 61 | } \␊ |
| 62 | }␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉\␊ |
| 63 | if (e != CEXCEPTION_NONE)␊ |
| 64 | ␊ |
| 65 | CEXCEPTION_T e = CEXCEPTION_NONE;␊ |
| 66 | ␉␊ |
| 67 | ␉XTRY␊ |
| 68 | ␉{␊ |
| 69 | ␉␉CExceptionMainFrames = CExceptionFrames;␊ |
| 70 | ␉}␊ |
| 71 | ␉XCATCH(e)␊ |
| 72 | ␉{␊ |
| 73 | if (e != EXIT_SUCCESS) {␊ |
| 74 | popFrame();␊ |
| 75 | halt();␊ |
| 76 | }␊ |
| 77 | }␊ |
| 78 | return 1;␊ |
| 79 | }␊ |
| 80 | ␊ |
| 81 | //------------------------------------------------------------------------------------------␊ |
| 82 | // Throw␊ |
| 83 | //------------------------------------------------------------------------------------------␊ |
| 84 | void Throw(CEXCEPTION_T ExceptionID)␊ |
| 85 | { ␊ |
| 86 | ␉longjmp(CExceptionFrames->cx, ExceptionID);␊ |
| 87 | ␊ |
| 88 | }␊ |
| 89 | ␊ |
| 90 | void pushFrame(void)␊ |
| 91 | {␊ |
| 92 | ␉CEXCEPTION_FRAME_T* frame = (CEXCEPTION_FRAME_T*)malloc(sizeof(CEXCEPTION_FRAME_T)); ␊ |
| 93 | ␉assert( frame != NULL );␊ |
| 94 | ␉bzero(frame,sizeof(CEXCEPTION_FRAME_T));␉␊ |
| 95 | ␉frame->pFrame = CExceptionFrames;␊ |
| 96 | ␉CExceptionFrames = frame;␊ |
| 97 | #ifdef DEBUG_EXCEPTION␊ |
| 98 | ␉frameCount++;␊ |
| 99 | #endif␉␊ |
| 100 | }␊ |
| 101 | ␊ |
| 102 | void popFrame(void)␊ |
| 103 | {␊ |
| 104 | ␊ |
| 105 | ␉CEXCEPTION_FRAME_T* frame = NULL;␊ |
| 106 | ␉assert( CExceptionFrames != NULL );␊ |
| 107 | ␉frame = CExceptionFrames->pFrame;␊ |
| 108 | ␉if (CExceptionFrames->zone) execute_hook("destroy_zone", CExceptionFrames->zone, NULL, NULL, NULL, NULL, NULL);␊ |
| 109 | ␉free(CExceptionFrames);␊ |
| 110 | ␉CExceptionFrames = frame;␊ |
| 111 | #ifdef DEBUG_EXCEPTION␊ |
| 112 | if (frameCount) frameCount--;␊ |
| 113 | #endif ␊ |
| 114 | }␊ |
| 115 | ␊ |
| 116 | #ifdef DEBUG_EXCEPTION␊ |
| 117 | unsigned long getFramesCount(void)␊ |
| 118 | { ␊ |
| 119 | ␉return frameCount;␊ |
| 120 | }␊ |
| 121 | #endif␊ |
| 122 | ␊ |
| 123 | CEXCEPTION_FRAME_T * getcurrentFrame(void)␊ |
| 124 | { ␊ |
| 125 | ␉return CExceptionFrames;␊ |
| 126 | }␊ |
| 127 | ␊ |
| 128 | CEXCEPTION_FRAME_T * getMainFrames(void)␊ |
| 129 | { ␊ |
| 130 | ␉return CExceptionMainFrames;␊ |
| 131 | } |
