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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 497 | giacomo | 1 | #include <FTrace_chunk.h> |
| 2 | #include <FTrace_types.h> |
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| 3 | #include <FTrace_OSD.h> |
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| 4 | |||
| 5 | #define FTRACE_DEBUG |
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| 6 | |||
| 7 | /* Globals */ |
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| 8 | |||
| 9 | FTrace_Chunk_Ptr ChunkTable[MAX_CHUNK]; /* Chunk array */ |
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| 10 | FTrace_Chunk_Ptr ActualChunk = NULL; /* Actual Chunk */ |
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| 11 | |||
| 532 | giacomo | 12 | /* OSD Pointer */ |
| 13 | void *OSD_current_pointer; |
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| 497 | giacomo | 14 | |
| 15 | int FTraceInit = 0; |
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| 16 | int FTraceEnable = 0; |
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| 17 | |||
| 18 | /* Init a chunk with default value */ |
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| 498 | giacomo | 19 | static int FTrace_chunk_init(FTrace_Chunk_Ptr c, int number, int size, int emergency_size, FTrace_flags flags) |
| 497 | giacomo | 20 | { |
| 21 | |||
| 498 | giacomo | 22 | c->id = FTRACE_CHUNK_ID; /* Std ID */ |
| 23 | c->number = number; /* Chunk number */ |
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| 24 | c->flags = flags; /* Chunk flags */ |
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| 25 | c->size = size; /* Chunk size */ |
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| 501 | giacomo | 26 | c->emergency_size = emergency_size; /* Chunk emergency size */ |
| 498 | giacomo | 27 | c->osd = (DWORD)((DWORD)(c) + sizeof(struct FTrace_Chunk)); |
| 497 | giacomo | 28 | |
| 501 | giacomo | 29 | return FTrace_OSD_chunk_init(c, size, emergency_size, flags); |
| 497 | giacomo | 30 | |
| 31 | } |
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| 32 | |||
| 33 | /* Find a free slot in ChunkTable */ |
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| 34 | static int FTrace_find_free_slot() |
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| 35 | { |
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| 36 | |||
| 37 | int i; |
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| 38 | |||
| 39 | if (FTraceInit == 0) { |
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| 40 | #ifdef FTRACE_DEBUG |
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| 41 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 42 | #endif |
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| 43 | return -1; |
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| 44 | } |
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| 45 | |||
| 46 | for (i = 0;i < MAX_CHUNK;i++) |
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| 47 | if (ChunkTable[i] == NULL) |
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| 48 | return i; |
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| 49 | |||
| 50 | return -1; |
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| 51 | |||
| 52 | } |
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| 53 | |||
| 54 | /* Init the FTrace */ |
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| 55 | static int FTrace_Init() |
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| 56 | { |
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| 57 | |||
| 58 | int i,err; |
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| 59 | |||
| 60 | /* Check if it's just initialized */ |
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| 61 | if (FTraceInit == 1) |
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| 62 | return 0; |
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| 63 | |||
| 64 | FTrace_lock(); |
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| 65 | |||
| 532 | giacomo | 66 | OSD_current_pointer = NULL; |
| 497 | giacomo | 67 | |
| 68 | for (i = 0;i < MAX_CHUNK;i++) |
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| 69 | ChunkTable[i] = NULL; |
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| 70 | |||
| 71 | /* Init System Dependet Part */ |
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| 72 | err = FTrace_OSD_init(); |
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| 73 | if (err != 0) { |
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| 74 | #ifdef FTRACE_DEBUG |
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| 75 | FTrace_printf("FTrace Error: FTrace OSD not initialized\n"); |
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| 76 | #endif |
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| 77 | FTrace_unlock(); |
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| 78 | return -1; |
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| 79 | } |
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| 80 | |||
| 81 | FTraceInit = 1; |
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| 82 | |||
| 83 | FTrace_unlock(); |
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| 84 | |||
| 85 | return 0; |
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| 86 | |||
| 87 | } |
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| 88 | |||
| 89 | /* Enable Tracer */ |
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| 90 | int FTrace_enable() |
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| 91 | { |
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| 92 | |||
| 93 | if (FTraceInit == 0 || ActualChunk == NULL) return -1; |
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| 94 | |||
| 95 | FTrace_fsave(); |
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| 96 | FTraceEnable = 1; |
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| 97 | FTrace_frestore(); |
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| 98 | |||
| 99 | return 0; |
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| 100 | |||
| 101 | } |
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| 102 | |||
| 103 | /* Disable Tracer */ |
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| 104 | int FTrace_disable() |
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| 105 | { |
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| 106 | |||
| 107 | if (FTraceInit == 0) return -1; |
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| 108 | |||
| 109 | FTrace_fsave(); |
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| 110 | FTraceEnable = 0; |
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| 111 | FTrace_frestore(); |
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| 112 | |||
| 113 | return 0; |
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| 114 | |||
| 115 | } |
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| 116 | |||
| 532 | giacomo | 117 | int FTrace_chunk_create(int size, int emergency_size, FTrace_flags flags) |
| 497 | giacomo | 118 | { |
| 119 | |||
| 120 | FTrace_Chunk_Ptr FT_temp; |
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| 532 | giacomo | 121 | int number, err; |
| 497 | giacomo | 122 | |
| 123 | FTrace_lock(); |
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| 124 | |||
| 125 | if (FTraceInit == 0) { |
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| 126 | err = FTrace_Init(); |
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| 127 | if (err != 0) { |
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| 128 | #ifdef FTRACE_DEBUG |
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| 129 | FTrace_printf("FTrace Error: Initialization fail\n"); |
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| 130 | #endif |
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| 131 | FTrace_unlock(); |
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| 132 | return -1; |
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| 133 | } |
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| 134 | } |
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| 135 | |||
| 532 | giacomo | 136 | number = FTrace_find_free_slot(); |
| 137 | if (number == -1) { |
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| 138 | #ifdef FTRACE_DEBUG |
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| 139 | FTrace_printf("FTrace Error: cannot find free slot for chunk\n"); |
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| 140 | #endif |
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| 141 | FTrace_unlock(); |
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| 142 | return -1; |
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| 143 | } |
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| 497 | giacomo | 144 | |
| 532 | giacomo | 145 | FT_temp = (FTrace_Chunk_Ptr)FTrace_malloc(sizeof(struct FTrace_Chunk) + FTRACE_OSD_CHUNK_HEAD + size + emergency_size); |
| 146 | if (FT_temp == NULL) { |
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| 147 | #ifdef FTRACE_DEBUG |
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| 148 | FTrace_printf("FTrace Error: cannot allocate memory for chunk\n"); |
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| 149 | #endif |
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| 150 | FTrace_unlock(); |
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| 151 | return -1; |
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| 152 | } |
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| 497 | giacomo | 153 | |
| 532 | giacomo | 154 | memset(FT_temp,0,sizeof(struct FTrace_Chunk) + FTRACE_OSD_CHUNK_HEAD + size + emergency_size); |
| 497 | giacomo | 155 | |
| 532 | giacomo | 156 | err = FTrace_chunk_init(FT_temp, number, size, emergency_size, flags); |
| 157 | if (err != 0) { |
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| 158 | #ifdef FTRACE_DEBUG |
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| 159 | FTrace_printf("FTrace Error: cannot initialized the new chunk\n"); |
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| 160 | #endif |
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| 161 | FTrace_unlock(); |
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| 162 | return -1; |
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| 163 | } |
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| 504 | giacomo | 164 | |
| 532 | giacomo | 165 | /* Set the ChunkTable */ |
| 166 | ChunkTable[number] = FT_temp; |
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| 497 | giacomo | 167 | |
| 532 | giacomo | 168 | #ifdef FTRACE_DEBUG |
| 169 | FTrace_printf("FTrace Debug: Chunk %d created at addr %x\n",number,(int)FT_temp); |
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| 170 | #endif |
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| 497 | giacomo | 171 | |
| 172 | FTrace_unlock(); |
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| 532 | giacomo | 173 | return number; |
| 497 | giacomo | 174 | |
| 175 | } |
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| 176 | |||
| 177 | /* Delete a Chunk */ |
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| 178 | int FTrace_chunk_delete(int number) |
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| 179 | { |
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| 180 | |||
| 181 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 182 | |||
| 183 | FTrace_lock(); |
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| 184 | |||
| 185 | if (FTraceInit == 0) { |
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| 186 | #ifdef FTRACE_DEBUG |
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| 187 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 188 | #endif |
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| 189 | FTrace_unlock(); |
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| 190 | return -1; |
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| 191 | } |
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| 192 | |||
| 193 | if (FT_temp == NULL) { |
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| 194 | #ifdef FTRACE_DEBUG |
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| 195 | FTrace_printf("FTrace Error: Chunk not present\n"); |
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| 196 | #endif |
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| 197 | FTrace_unlock(); |
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| 198 | return -1; |
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| 199 | } |
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| 200 | |||
| 201 | if (FT_temp->flags & FTRACE_CHUNK_FLAG_NODEL) { |
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| 202 | FTrace_unlock(); |
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| 203 | return 0; |
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| 204 | } |
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| 205 | |||
| 206 | FTrace_free(FT_temp); |
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| 207 | ChunkTable[number] = NULL; |
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| 208 | |||
| 209 | FTrace_unlock(); |
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| 210 | return 0; |
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| 211 | |||
| 212 | } |
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| 213 | |||
| 214 | /* Set the chunk flags */ |
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| 215 | int FTrace_set_chunk_flags(int number, FTrace_flags flags) |
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| 216 | { |
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| 217 | |||
| 218 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 219 | |||
| 220 | FTrace_lock(); |
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| 221 | |||
| 222 | if (FTraceInit == 0) { |
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| 223 | #ifdef FTRACE_DEBUG |
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| 224 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 225 | #endif |
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| 226 | FTrace_unlock(); |
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| 227 | return -1; |
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| 228 | } |
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| 229 | |||
| 230 | if (FT_temp == NULL) { |
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| 231 | #ifdef FTRACE_DEBUG |
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| 232 | FTrace_printf("FTrace Error: Chunk not present\n"); |
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| 233 | #endif |
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| 234 | FTrace_unlock(); |
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| 235 | return -1; |
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| 236 | } |
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| 237 | |||
| 238 | FT_temp->flags = flags; |
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| 503 | giacomo | 239 | FTrace_OSD_update_chunk_flags(FT_temp); |
| 497 | giacomo | 240 | |
| 241 | return 0; |
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| 242 | |||
| 243 | } |
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| 244 | |||
| 245 | /* Get the chunk flags */ |
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| 246 | int FTrace_get_chunk_flags(int number, FTrace_flags *flags) |
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| 247 | { |
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| 248 | |||
| 249 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 250 | |||
| 251 | FTrace_lock(); |
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| 252 | |||
| 253 | if (FTraceInit == 0) { |
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| 254 | #ifdef FTRACE_DEBUG |
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| 255 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 256 | #endif |
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| 257 | FTrace_unlock(); |
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| 258 | return -1; |
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| 259 | } |
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| 260 | |||
| 261 | if (FT_temp == NULL) { |
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| 262 | #ifdef FTRACE_DEBUG |
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| 263 | FTrace_printf("FTrace Error: Chunk not present\n"); |
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| 264 | #endif |
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| 265 | FTrace_unlock(); |
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| 266 | return -1; |
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| 267 | } |
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| 532 | giacomo | 268 | |
| 269 | FTrace_OSD_update_chunk_flags(FT_temp); *flags = FT_temp->flags; |
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| 270 | |||
| 271 | FTrace_unlock(); |
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| 272 | |||
| 497 | giacomo | 273 | return 0; |
| 274 | |||
| 275 | } |
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| 276 | |||
| 277 | /* Select the actual chunk */ |
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| 278 | int FTrace_actual_chunk_select(int number) |
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| 279 | { |
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| 280 | |||
| 281 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 282 | |||
| 283 | FTrace_lock(); |
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| 284 | |||
| 285 | if (FTraceInit == 0) { |
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| 286 | #ifdef FTRACE_DEBUG |
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| 287 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 288 | #endif |
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| 289 | FTrace_unlock(); |
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| 290 | return -1; |
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| 291 | } |
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| 292 | |||
| 293 | if (FT_temp == NULL) { |
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| 294 | #ifdef FTRACE_DEBUG |
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| 295 | FTrace_printf("FTrace Error: Chunk not present\n"); |
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| 296 | #endif |
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| 297 | FTrace_unlock(); |
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| 298 | return -1; |
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| 299 | } |
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| 300 | |||
| 301 | if (FT_temp->flags & FTRACE_CHUNK_FLAG_FREE) { |
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| 302 | |||
| 303 | /* Set as used */ |
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| 304 | FT_temp->flags &= ~FTRACE_CHUNK_FLAG_FREE; |
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| 503 | giacomo | 305 | FTrace_OSD_update_chunk_flags(FT_temp); |
| 497 | giacomo | 306 | |
| 307 | /* Update the actual_chunk and OSD_pointers */ |
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| 308 | FTrace_fsave(); |
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| 309 | ActualChunk = FT_temp; |
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| 532 | giacomo | 310 | OSD_current_pointer = (void *)FT_temp->osd; |
| 497 | giacomo | 311 | FTrace_frestore(); |
| 312 | |||
| 313 | } else { |
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| 314 | #ifdef FTRACE_DEBUG |
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| 315 | FTrace_printf("FTrace Error: Chunk is not free\n"); |
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| 316 | #endif |
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| 317 | FTrace_unlock(); |
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| 318 | return -1; |
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| 319 | } |
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| 320 | |||
| 321 | FTrace_unlock(); |
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| 322 | |||
| 323 | return 0; |
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| 324 | |||
| 325 | } |
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| 326 | |||
| 327 | /* Find the first chunk with specific flags*/ |
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| 328 | int FTrace_get_first_chunk(FTrace_flags flags) { |
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| 329 | |||
| 330 | int i; |
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| 331 | |||
| 332 | FTrace_lock(); |
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| 333 | |||
| 334 | if (FTraceInit == 0) { |
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| 335 | #ifdef FTRACE_DEBUG |
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| 336 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 337 | #endif |
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| 338 | FTrace_unlock(); |
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| 339 | return -1; |
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| 340 | } |
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| 341 | |||
| 342 | for (i = 0;i < MAX_CHUNK;i++) { |
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| 343 | |||
| 344 | if (ChunkTable[i]->flags & flags) { |
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| 345 | FTrace_unlock(); |
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| 346 | return i; |
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| 347 | } |
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| 348 | |||
| 349 | } |
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| 350 | |||
| 351 | #ifdef FTRACE_DEBUG |
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| 352 | FTrace_printf("FTrace Error: Free chunk not found\n"); |
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| 353 | #endif |
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| 354 | FTrace_unlock(); |
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| 355 | |||
| 356 | return -1; |
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| 357 | |||
| 358 | } |
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| 359 | |||
| 360 | /* Get chunk table */ |
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| 361 | FTrace_Chunk_Ptr *FTrace_get_chunk_table() |
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| 362 | { |
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| 363 | |||
| 364 | return ChunkTable; |
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| 365 | |||
| 366 | } |
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| 367 | |||
| 368 | /* Link two chunks */ |
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| 532 | giacomo | 369 | int FTrace_chunk_link(int chunk_A, int chunk_B) |
| 497 | giacomo | 370 | { |
| 371 | |||
| 372 | FTrace_Chunk_Ptr ckA = ChunkTable[chunk_A]; |
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| 373 | FTrace_Chunk_Ptr ckB = ChunkTable[chunk_B]; |
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| 374 | |||
| 375 | int err; |
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| 376 | |||
| 377 | FTrace_lock(); |
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| 378 | |||
| 379 | if (FTraceInit == 0) { |
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| 380 | #ifdef FTRACE_DEBUG |
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| 381 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 382 | #endif |
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| 383 | FTrace_unlock(); |
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| 384 | return -1; |
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| 385 | } |
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| 386 | |||
| 387 | if (ckA == NULL) { |
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| 388 | #ifdef FTRACE_DEBUG |
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| 389 | FTrace_printf("FTrace Error: Chunk A not present\n"); |
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| 390 | #endif |
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| 391 | FTrace_unlock(); |
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| 392 | return -1; |
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| 393 | } |
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| 394 | |||
| 395 | if (ckB == NULL) { |
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| 396 | #ifdef FTRACE_DEBUG |
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| 397 | FTrace_printf("FTrace Error: Chunk B not present\n"); |
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| 398 | #endif |
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| 399 | FTrace_unlock(); |
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| 400 | return -1; |
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| 401 | } |
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| 402 | |||
| 403 | if (!(ckB->flags & FTRACE_CHUNK_FLAG_FREE)) { |
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| 404 | #ifdef FTRACE_DEBUG |
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| 405 | FTrace_printf("FTrace Error: Chunk B is not free\n"); |
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| 406 | #endif |
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| 407 | FTrace_unlock(); |
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| 408 | return -1; |
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| 534 | giacomo | 409 | } else { |
| 410 | ckB->flags &= ~FTRACE_CHUNK_FLAG_FREE; |
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| 411 | FTrace_OSD_update_chunk_flags(ckB); |
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| 497 | giacomo | 412 | } |
| 413 | |||
| 414 | /* FTrace Low Level Blocking Part */ |
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| 415 | FTrace_fsave(); |
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| 532 | giacomo | 416 | err = FTrace_OSD_chunk_link(ckA,ckB); |
| 497 | giacomo | 417 | if (err != 0) { |
| 418 | #ifdef FTRACE_DEBUG |
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| 419 | FTrace_printf("FTrace Error: Cannot link the chunks\n"); |
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| 420 | #endif |
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| 421 | return -1; |
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| 422 | } |
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| 423 | FTrace_frestore(); |
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| 424 | |||
| 425 | FTrace_unlock(); |
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| 426 | |||
| 427 | return 0; |
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| 428 | |||
| 429 | } |
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| 430 | |||
| 431 | /* Create a new memory region where the compressed data are stored */ |
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| 432 | int FTrace_compress_chunk(int number, FTrace_flags new_flags) |
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| 433 | { |
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| 434 | void *temp_data; |
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| 435 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 436 | int err, data_size; |
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| 437 | FTrace_Chunk_Ptr New_chunk; |
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| 438 | |||
| 439 | FTrace_lock(); |
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| 440 | |||
| 441 | if (FTraceInit == 0) { |
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| 442 | #ifdef FTRACE_DEBUG |
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| 443 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 444 | #endif |
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| 445 | FTrace_unlock(); |
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| 446 | return -1; |
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| 447 | } |
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| 448 | |||
| 449 | if (FT_temp == NULL) { |
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| 450 | #ifdef FTRACE_DEBUG |
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| 451 | FTrace_printf("FTrace Error: Chunk not present\n"); |
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| 452 | #endif |
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| 453 | FTrace_unlock(); |
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| 454 | return -1; |
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| 455 | } |
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| 456 | |||
| 457 | FT_temp->flags |= FTRACE_CHUNK_FLAG_BUSY; |
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| 552 | giacomo | 458 | FTrace_OSD_update_chunk_flags(FT_temp); |
| 497 | giacomo | 459 | |
| 460 | FTrace_unlock(); |
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| 461 | |||
| 462 | /* Alloc temp memory for */ |
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| 501 | giacomo | 463 | temp_data = (void *)FTrace_malloc(FT_temp->size+FT_temp->emergency_size); |
| 497 | giacomo | 464 | if (temp_data == NULL) { |
| 465 | #ifdef FTRACE_DEBUG |
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| 466 | FTrace_printf("FTrace Error: Cannot allocate memory\n"); |
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| 467 | #endif |
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| 468 | return -1; |
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| 469 | } |
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| 470 | |||
| 471 | /* Compress the chunk. Temp_data are a temporary region where |
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| 472 | store the compressed chunk. Data_size is the size of compressed |
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| 473 | data */ |
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| 474 | err = FTrace_OSD_compress_chunk(number,temp_data,&data_size); |
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| 475 | if (err != 0) { |
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| 476 | #ifdef FTRACE_DEBUG |
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| 477 | FTrace_printf("FTrace Error: OSD Compressing function failed\n"); |
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| 478 | #endif |
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| 479 | return -1; |
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| 480 | } |
||
| 481 | |||
| 482 | New_chunk = (FTrace_Chunk_Ptr)FTrace_malloc(sizeof(struct FTrace_Chunk) + FTRACE_OSD_CHUNK_HEAD + data_size); |
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| 483 | if (New_chunk == NULL) { |
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| 484 | #ifdef FTRACE_DEBUG |
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| 485 | FTrace_printf("FTrace Error: Cannot allocate memory\n"); |
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| 486 | #endif |
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| 487 | return -1; |
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| 488 | } |
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| 489 | |||
| 490 | memcpy(New_chunk,temp_data,data_size); |
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| 491 | |||
| 492 | FTrace_free(temp_data); |
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| 493 | |||
| 494 | FTrace_lock(); |
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| 495 | |||
| 496 | /* Free the memory of the old chunk */ |
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| 497 | FTrace_free(FT_temp); |
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| 498 | |||
| 499 | /* Set the new chunk flags and update the main table */ |
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| 500 | New_chunk->flags = new_flags; |
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| 501 | New_chunk->flags |= FTRACE_CHUNK_FLAG_COMPR; |
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| 552 | giacomo | 502 | FTrace_OSD_update_chunk_flags(New_chunk); |
| 497 | giacomo | 503 | ChunkTable[number] = New_chunk; |
| 504 | |||
| 505 | FTrace_unlock(); |
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| 506 | |||
| 507 | return 0; |
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| 508 | |||
| 509 | } |
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| 510 | |||
| 511 | /* Send the chunk out from the memory */ |
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| 512 | int FTrace_send_chunk(int number, int osd_flags, FTrace_flags new_flags) |
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| 513 | { |
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| 514 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
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| 515 | int err; |
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| 516 | |||
| 517 | FTrace_lock(); |
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| 518 | |||
| 519 | if (FTraceInit == 0) { |
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| 520 | #ifdef FTRACE_DEBUG |
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| 521 | FTrace_printf("FTrace Error: FTrace not initialized\n"); |
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| 522 | #endif |
||
| 523 | FTrace_unlock(); |
||
| 524 | return -1; |
||
| 525 | } |
||
| 526 | |||
| 527 | if (FT_temp == NULL) { |
||
| 528 | #ifdef FTRACE_DEBUG |
||
| 529 | FTrace_printf("FTrace Error: Chunk not present\n"); |
||
| 530 | #endif |
||
| 531 | FTrace_unlock(); |
||
| 532 | return -1; |
||
| 533 | } |
||
| 534 | |||
| 535 | FT_temp->flags |= FTRACE_CHUNK_FLAG_BUSY; |
||
| 552 | giacomo | 536 | FTrace_OSD_update_chunk_flags(FT_temp); |
| 497 | giacomo | 537 | |
| 538 | FTrace_unlock(); |
||
| 539 | |||
| 550 | giacomo | 540 | err = FTrace_OSD_send_chunk(FT_temp, osd_flags); |
| 497 | giacomo | 541 | if (err != 0) { |
| 542 | #ifdef FTRACE_DEBUG |
||
| 543 | FTrace_printf("FTrace Error: Cannot send the chunk\n"); |
||
| 544 | #endif |
||
| 545 | return -1; |
||
| 546 | } |
||
| 547 | |||
| 548 | FTrace_lock(); |
||
| 549 | |||
| 550 | /* Set the new chunk flags */ |
||
| 551 | FT_temp->flags = new_flags; |
||
| 552 | giacomo | 552 | FTrace_OSD_update_chunk_flags(FT_temp); |
| 497 | giacomo | 553 | |
| 554 | FTrace_unlock(); |
||
| 555 | |||
| 556 | return 0; |
||
| 557 | |||
| 558 | } |
||
| 503 | giacomo | 559 | |
| 560 | void FTrace_chunk_dump(int number) { |
||
| 561 | |||
| 562 | FTrace_Chunk_Ptr FT_temp = ChunkTable[number]; |
||
| 563 | |||
| 534 | giacomo | 564 | FTrace_printf("ID : %x\n",FT_temp->id); |
| 565 | FTrace_printf("NUM : %d\n",FT_temp->number); |
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| 566 | FTrace_printf("FLAGS : %x\n",FT_temp->flags); |
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| 567 | FTrace_printf("SIZE : %d\n",FT_temp->size); |
||
| 568 | FTrace_printf("EMERG : %d\n",FT_temp->emergency_size); |
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| 504 | giacomo | 569 | |
| 534 | giacomo | 570 | FTrace_OSD_chunk_dump(FT_temp); |
| 571 | |||
| 503 | giacomo | 572 | } |
| 573 |