Mercurial > hg > dmlib
annotate src/dmlib.c @ 812:1e5cf1144f36
Move library source under src/ subdirectory.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Fri, 16 May 2014 03:22:39 +0300 |
| parents | dmlib.c@3c5ebe88e52f |
| children | fc272f5f2d15 |
| rev | line source |
|---|---|
| 0 | 1 #include "dmlib.h" |
| 2 #include <errno.h> | |
| 3 | |
| 4 | |
| 5 int dmVerbosity = 0; | |
| 6 char *dmProgName = NULL, | |
| 7 *dmProgDesc = NULL, | |
| 8 *dmProgVersion = NULL, | |
| 9 *dmProgAuthor = NULL, | |
| 10 *dmProgLicense = NULL; | |
| 11 | |
| 12 | |
| 13 void dmInitProg(char *name, char *desc, char *version, char *author, char *license) | |
| 14 { | |
| 15 dmProgName = name; | |
| 16 dmProgDesc = desc; | |
| 17 dmProgVersion = version; | |
| 804 | 18 dmProgAuthor = author ? author : DM_PROG_AUTHOR; |
| 19 dmProgLicense = license ? license : DM_PROG_LICENSE; | |
| 0 | 20 } |
| 21 | |
| 22 | |
| 23 void dmPrintBanner(FILE *outFile, const char *name, const char *usage) | |
| 24 { | |
| 25 fprintf(outFile, | |
| 804 | 26 "\n%s v%s (%s)\n" |
| 27 "%s\n" | |
| 28 "%s\n" | |
| 29 "Usage: %s %s\n", | |
| 30 dmProgName, dmProgVersion, dmProgDesc, | |
| 31 dmProgAuthor, dmProgLicense, name, usage); | |
| 0 | 32 } |
| 33 | |
| 34 | |
| 35 void dmMsgVA(int level, const char *fmt, va_list ap) | |
| 36 { | |
| 37 if (dmVerbosity >= level) | |
| 38 { | |
| 39 fprintf(stderr, "%s: ", dmProgName); | |
| 40 vfprintf(stderr, fmt, ap); | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 | |
| 45 void dmPrintVA(int level, const char *fmt, va_list ap) | |
| 46 { | |
| 47 if (dmVerbosity >= level) | |
| 48 { | |
| 49 vfprintf(stderr, fmt, ap); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 | |
| 54 void dmErrorVA(const char *fmt, va_list ap) | |
| 55 { | |
| 56 fprintf(stderr, "%s: ", dmProgName); | |
| 57 vfprintf(stderr, fmt, ap); | |
| 58 } | |
| 59 | |
| 60 | |
| 61 void dmError(const char *fmt, ...) | |
| 62 { | |
| 63 va_list ap; | |
| 64 | |
| 65 va_start(ap, fmt); | |
| 66 dmErrorVA(fmt, ap); | |
| 67 va_end(ap); | |
| 68 } | |
| 69 | |
| 70 | |
| 71 void dmMsg(int level, const char *fmt, ...) | |
| 72 { | |
| 73 va_list ap; | |
| 74 | |
| 75 va_start(ap, fmt); | |
| 76 dmMsgVA(level, fmt, ap); | |
| 77 va_end(ap); | |
| 78 } | |
| 79 | |
| 80 | |
| 81 void dmPrint(int level, const char *fmt, ...) | |
| 82 { | |
| 83 va_list ap; | |
| 84 | |
| 85 va_start(ap, fmt); | |
| 86 dmPrintVA(level, fmt, ap); | |
| 87 va_end(ap); | |
| 88 } | |
| 89 | |
| 90 | |
| 91 /* Memory handling routines | |
| 92 */ | |
| 93 void *dmMalloc(size_t l) | |
| 94 { | |
| 95 return malloc(l); | |
| 96 } | |
| 97 | |
| 98 | |
| 99 void *dmMalloc0(size_t l) | |
| 100 { | |
| 101 return calloc(1, l); | |
| 102 } | |
| 103 | |
| 104 | |
| 105 void *dmCalloc(size_t n, size_t l) | |
| 106 { | |
| 107 return calloc(n, l); | |
| 108 } | |
| 109 | |
| 110 | |
| 111 void *dmRealloc(void *p, size_t l) | |
| 112 { | |
| 113 return realloc(p, l); | |
| 114 } | |
| 115 | |
| 116 | |
| 117 void dmFree(void *p) | |
| 118 { | |
| 119 /* Check for NULL pointers for portability due to some libc | |
| 120 * implementations not handling free(NULL) too well. | |
| 121 */ | |
| 122 if (p) free(p); | |
| 123 } | |
| 124 | |
| 125 | |
| 126 BOOL dmGetIntVal(const char *s, int *i) | |
| 127 { | |
| 128 if (s[0] == '$') | |
| 129 { | |
| 130 if (sscanf(&s[1], "%x", i) < 1) | |
| 131 return FALSE; | |
| 132 } | |
| 133 else if (s[0] == '0' && s[1] == 'x') | |
| 134 { | |
| 135 if (sscanf(&s[2], "%x", i) < 1) | |
| 136 return FALSE; | |
| 137 } | |
| 138 else | |
| 139 { | |
| 140 if (sscanf(s, "%u", i) < 1) | |
| 141 return FALSE; | |
| 142 } | |
| 143 return TRUE; | |
| 144 } | |
| 145 | |
| 146 | |
| 147 /* Error handling | |
| 148 */ | |
| 149 #define DM_SYSTEM_ERRORS 100000 | |
| 150 | |
| 151 int dmGetErrno() | |
| 152 { | |
| 153 return DM_SYSTEM_ERRORS + errno; | |
| 154 } | |
| 155 | |
| 156 | |
| 157 const char *dmErrorStr(int error) | |
| 158 { | |
| 159 if (error >= DM_SYSTEM_ERRORS) | |
| 160 return strerror(error - DM_SYSTEM_ERRORS); | |
| 161 | |
| 162 switch (error) | |
| 163 { | |
| 164 case DMERR_OK: return "No error"; | |
| 165 case DMERR_FOPEN: return "File open error"; | |
| 166 case DMERR_FREAD: return "Read error"; | |
| 167 case DMERR_FWRITE: return "Write error"; | |
| 168 case DMERR_FSEEK: return "Seek error"; | |
| 169 case DMERR_NOT_FOUND: return "Resource not found"; | |
| 170 | |
| 171 case DMERR_INVALID_DATA: return "Invalid data"; | |
| 172 case DMERR_MALLOC: return "Memory allocation failure"; | |
| 173 case DMERR_ALREADY_INIT: return "Already initialized"; | |
| 174 case DMERR_INIT_FAIL: return "Initialization failed"; | |
| 175 case DMERR_INVALID_ARGS: return "Invalid arguments"; | |
| 176 | |
| 177 case DMERR_NULLPTR: return "NULL pointer"; | |
| 178 case DMERR_NOT_SUPPORTED: return "Operation not supported"; | |
| 179 case DMERR_OUT_OF_DATA: return "Out of data"; | |
| 180 case DMERR_EXTRA_DATA: return "Extra data"; | |
| 181 case DMERR_BOUNDS: return "Bounds check failed"; | |
| 182 | |
| 183 case DMERR_NOTPACK: return "File is not a PACK"; | |
| 184 case DMERR_VERSION: return "Unsupported PACK version"; | |
| 185 case DMERR_INVALID: return "Invalid data, corrupted file"; | |
| 186 case DMERR_COMPRESSION: return "Error in compression"; | |
| 187 | |
| 188 default: return "Unknown error"; | |
| 189 } | |
| 190 } | |
|
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191 |
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192 |
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193 #ifdef DM_MUTEX_DEBUG |
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194 |
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195 static DMMutexLock * dmGetMutexThreadIDLock(DMMutex *mutex) |
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196 { |
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197 Uint32 id = SDL_ThreadID(); |
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198 int i; |
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199 for (i = 0; i < 8; i++) |
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200 { |
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201 DMMutexLock *lock = &(mutex->locks[i]); |
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202 if (lock->used && lock->id == id) |
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203 return lock; |
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204 } |
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205 return NULL; |
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206 } |
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207 |
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208 static void dmPrintMutexLocks(DMMutex *mutex, const char *state, const char *file, const int line) |
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209 { |
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210 int i; |
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211 |
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212 fprintf(stderr, |
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213 "----------------------\n" |
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214 "%s --> %p @ %s:%d\n" |
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215 "Current thread: %d\n" |
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216 "Mutex : %p (created @ %s:%d)\n", |
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217 state, mutex, file, line, |
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218 SDL_ThreadID(), mutex, mutex->cr_file, mutex->cr_line); |
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219 |
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220 for (i = 0; i < 8; i++) |
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221 { |
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222 DMMutexLock *lock = &(mutex->locks[i]); |
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223 if (lock->used) |
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224 { |
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225 fprintf(stderr, |
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226 "Lock #%d: thread=%d, state=%d\n", |
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227 i, lock->id, lock->state); |
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228 } |
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229 } |
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230 } |
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231 |
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232 int dmDOMutexLock(DMMutex *mutex, const char *file, const int line) |
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233 { |
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234 if (mutex != NULL) |
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235 { |
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236 dmPrintMutexLocks(mutex, "LOCKING", file, line); |
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237 |
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238 DMMutexLock *lock = dmGetMutexThreadIDLock(mutex); |
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239 if (lock != NULL) |
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240 { |
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241 int res; |
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242 if (lock->state == 0) |
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243 res = SDL_mutexP(mutex->m); |
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244 else |
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245 res = 1; |
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246 lock->state++; |
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247 fprintf(stderr, "LOCKING %p @ thread=%d done [1].\n", mutex, SDL_ThreadID()); |
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248 return res; |
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249 } |
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250 else |
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251 { |
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252 int i; |
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253 for (i = 0; i < 8; i++) |
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254 { |
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255 DMMutexLock *lock = &(mutex->locks[i]); |
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256 if (!lock->used) |
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257 { |
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258 int res; |
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259 lock->used = TRUE; |
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260 lock->id = SDL_ThreadID(); |
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261 lock->state++; |
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262 res = SDL_mutexP(mutex->m); |
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263 fprintf(stderr, "LOCKING %p @ thread=%d done [2].\n", mutex, SDL_ThreadID()); |
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264 return res; |
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265 } |
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266 } |
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267 return -2; |
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268 } |
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269 } |
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270 return -1; |
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271 } |
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272 |
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273 |
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274 int dmDOMutexUnlock(DMMutex *mutex, const char *file, const int line) |
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275 { |
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276 if (mutex != NULL) |
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277 { |
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278 dmPrintMutexLocks(mutex, "UN-LOCKING", file, line); |
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279 |
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280 DMMutexLock *lock = dmGetMutexThreadIDLock(mutex); |
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281 if (lock != NULL) |
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282 { |
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283 int res; |
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284 lock->state--; |
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285 if (lock->state == 0) |
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286 res = SDL_mutexV(mutex->m); |
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287 else |
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288 res = lock->state; |
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289 return res; |
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290 } |
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291 else |
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292 { |
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293 return -2; |
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294 } |
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295 } |
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296 return -1; |
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297 } |
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298 |
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299 |
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300 DMMutex * dmDOCreateMutex(const char *file, const int line) |
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301 { |
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302 DMMutex *mutex = dmMalloc0(sizeof(DMMutex)); |
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303 if (mutex == NULL) |
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304 return NULL; |
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305 mutex->cr_file = dm_strdup(file); |
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306 mutex->cr_line = line; |
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307 mutex->m = SDL_CreateMutex(); |
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308 return mutex; |
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309 } |
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310 |
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311 |
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312 void dmDestroyMutex(DMMutex *mutex) |
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313 { |
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314 if (mutex != NULL) |
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315 { |
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316 SDL_DestroyMutex(mutex->m); |
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317 dmFree(mutex); |
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318 } |
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319 } |
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320 |
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321 #endif |