root / lab4 / .minix-src / include / minix / vassert.h @ 13
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1 | 13 | up20180614 | #ifndef _VASSERT_H_
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2 | #define _VASSERT_H_
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3 | |||
4 | #ifdef __cplusplus
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5 | extern "C" |
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6 | { |
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7 | #endif /*__cplusplus*/ |
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8 | |||
9 | #define ALIGNED(n) __attribute__((__aligned__(n)))
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10 | #define VASSERT_TRIGGER_OFFSET 1221 |
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11 | #define VASSERT_PAGE_SIZE 4096 |
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12 | |||
13 | /* Need to align at 4K. */
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14 | /* Ensure the inReplay flag is on its own page. */
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15 | #pragma pack(1) |
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16 | typedef struct VAssert_StateWrapper { |
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17 | char space1[VASSERT_TRIGGER_OFFSET];
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18 | volatile char inReplay; |
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19 | char space[VASSERT_PAGE_SIZE - VASSERT_TRIGGER_OFFSET - sizeof(char)]; |
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20 | } VAssert_StateWrapper; |
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21 | #pragma pack()
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22 | |||
23 | extern VAssert_StateWrapper vassert_state;
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24 | |||
25 | /*
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26 | * User-selectable standard functions.
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27 | * XXX: Document these, in coordination with the SDK docs.
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28 | */
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29 | |||
30 | #if defined(__KERNEL__)
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31 | # define KERNEL_VASSERT
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32 | #endif
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33 | |||
34 | #ifdef KERNEL_VASSERT
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35 | |||
36 | # ifndef VASSERT_CUSTOM_ASSERT
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37 | # define VASSERT_CUSTOM_ASSERT(expr)
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38 | # endif
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39 | |||
40 | # ifndef VASSERT_CUSTOM_ABORT
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41 | # include <linux/kernel.h> |
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42 | # define VASSERT_CUSTOM_ABORT() ((void)0) // printk(KERN_ALERT"VAssert abort at %s: %d", __FILE__, __LINE__) |
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43 | # endif
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44 | |||
45 | # ifndef VASSERT_CUSTOM_LOG
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46 | # include <linux/kernel.h> |
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47 | # define VASSERT_CUSTOM_LOG printk
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48 | # endif
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49 | |||
50 | #else
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51 | # ifndef VASSERT_CUSTOM_ASSERT
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52 | # include <assert.h> |
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53 | # define VASSERT_CUSTOM_ASSERT assert
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54 | # endif
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55 | |||
56 | # ifndef VASSERT_CUSTOM_ABORT
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57 | # include <stdlib.h> |
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58 | # define VASSERT_CUSTOM_ABORT abort
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59 | # endif
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60 | |||
61 | # ifndef VASSERT_CUSTOM_LOG
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62 | # include <stdio.h> |
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63 | # define VASSERT_CUSTOM_LOG printf
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64 | # endif
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65 | #endif
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66 | |||
67 | /* Results: 0 if successful, -1 if not. */
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68 | // XXX need to automatic de-register trigger page when the program quits
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69 | extern char VAssert_Init(void); |
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70 | extern char VAssert_Uninit(void); |
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71 | |||
72 | /*
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73 | * These functions should not be called directly; they need to be wrapped.
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74 | */
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75 | extern void VAssert_LogMain(const char *format, ...) |
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76 | __attribute__((__format__(__printf__, 1, 2))); |
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77 | extern void VAssert_GoLiveMain(void); |
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78 | extern void VAssert_ReturnToReplayMain(void); |
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79 | extern char VAssert_Trace(size_t max_size); |
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80 | |||
81 | #ifdef VASSERT_ALWAYS_EXECUTE
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82 | |||
83 | #define VAssert_Assert(expr) \
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84 | do { \
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85 | VASSERT_CUSTOM_ASSERT(expr); \ |
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86 | } while (0) |
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87 | |||
88 | #define VAssert_Log(args) \
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89 | do { \
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90 | VASSERT_CUSTOM_LOG args; \ |
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91 | } while (0) |
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92 | |||
93 | #define VAssert_BeginBlock
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94 | #define VAssert_EndBlock
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95 | |||
96 | #else /* VASSERT_ALWAYS_EXECUTE */ |
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97 | |||
98 | #define VAssert_Assert(expr) \
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99 | do { \
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100 | if (vassert_state.inReplay) { \
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101 | if (!(expr)) { \
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102 | VAssert_GoLiveMain(); \ |
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103 | VASSERT_CUSTOM_ABORT(); \ |
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104 | } else { \
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105 | VAssert_ReturnToReplayMain(); \ |
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106 | } \ |
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107 | } \ |
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108 | } while (0) |
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109 | |||
110 | #define VAssert_Log(args) \
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111 | do { \
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112 | if (vassert_state.inReplay) { \
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113 | VAssert_LogMain args; \ |
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114 | VAssert_ReturnToReplayMain(); \ |
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115 | } \ |
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116 | } while (0) |
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117 | |||
118 | #define VAssert_BeginBlock if (vassert_state.inReplay) |
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119 | #define VAssert_EndBlock VAssert_ReturnToReplayMain()
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120 | |||
121 | #endif /* VASSERT_ALWAYS_EXECUTE */ |
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122 | |||
123 | /*
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124 | * Record/Replay functionality
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125 | */
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126 | /*
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127 | * Results: True if successful, false if not.
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128 | * Input: True to start recording, false to stop.
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129 | */
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130 | extern char VAssert_SetRecordingMain(char start); |
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131 | |||
132 | #define VAssert_StartRecording() VAssert_SetRecordingMain(1) |
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133 | #define VAssert_StopRecording() VAssert_SetRecordingMain(0) |
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134 | |||
135 | #ifdef __cplusplus
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136 | } |
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137 | #endif /*__cplusplus*/ |
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138 | |||
139 | #endif /*_VASSERT_H_*/ |