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| 1 /* | |
| 2 ** 2003 December 18 | |
| 3 ** | |
| 4 ** The author disclaims copyright to this source code. In place of | |
| 5 ** a legal notice, here is a blessing: | |
| 6 ** | |
| 7 ** May you do good and not evil. | |
| 8 ** May you find forgiveness for yourself and forgive others. | |
| 9 ** May you share freely, never taking more than you give. | |
| 10 ** | |
| 11 ************************************************************************* | |
| 12 ** Code for testing the SQLite library in a multithreaded environment. | |
| 13 */ | |
| 14 #include "sqliteInt.h" | |
| 15 #include "tcl.h" | |
| 16 #if SQLITE_OS_UNIX && SQLITE_THREADSAFE | |
| 17 #include <stdlib.h> | |
| 18 #include <string.h> | |
| 19 #include <pthread.h> | |
| 20 #include <sched.h> | |
| 21 #include <ctype.h> | |
| 22 | |
| 23 extern const char *sqlite3ErrName(int); | |
| 24 | |
| 25 /* | |
| 26 ** Each thread is controlled by an instance of the following | |
| 27 ** structure. | |
| 28 */ | |
| 29 typedef struct Thread Thread; | |
| 30 struct Thread { | |
| 31 /* The first group of fields are writable by the master and read-only | |
| 32 ** to the thread. */ | |
| 33 char *zFilename; /* Name of database file */ | |
| 34 void (*xOp)(Thread*); /* next operation to do */ | |
| 35 char *zArg; /* argument usable by xOp */ | |
| 36 int opnum; /* Operation number */ | |
| 37 int busy; /* True if this thread is in use */ | |
| 38 | |
| 39 /* The next group of fields are writable by the thread but read-only to the | |
| 40 ** master. */ | |
| 41 int completed; /* Number of operations completed */ | |
| 42 sqlite3 *db; /* Open database */ | |
| 43 sqlite3_stmt *pStmt; /* Pending operation */ | |
| 44 char *zErr; /* operation error */ | |
| 45 char *zStaticErr; /* Static error message */ | |
| 46 int rc; /* operation return code */ | |
| 47 int argc; /* number of columns in result */ | |
| 48 const char *argv[100]; /* result columns */ | |
| 49 const char *colv[100]; /* result column names */ | |
| 50 }; | |
| 51 | |
| 52 /* | |
| 53 ** There can be as many as 26 threads running at once. Each is named | |
| 54 ** by a capital letter: A, B, C, ..., Y, Z. | |
| 55 */ | |
| 56 #define N_THREAD 26 | |
| 57 static Thread threadset[N_THREAD]; | |
| 58 | |
| 59 | |
| 60 /* | |
| 61 ** The main loop for a thread. Threads use busy waiting. | |
| 62 */ | |
| 63 static void *thread_main(void *pArg){ | |
| 64 Thread *p = (Thread*)pArg; | |
| 65 if( p->db ){ | |
| 66 sqlite3_close(p->db); | |
| 67 } | |
| 68 sqlite3_open(p->zFilename, &p->db); | |
| 69 if( SQLITE_OK!=sqlite3_errcode(p->db) ){ | |
| 70 p->zErr = strdup(sqlite3_errmsg(p->db)); | |
| 71 sqlite3_close(p->db); | |
| 72 p->db = 0; | |
| 73 } | |
| 74 p->pStmt = 0; | |
| 75 p->completed = 1; | |
| 76 while( p->opnum<=p->completed ) sched_yield(); | |
| 77 while( p->xOp ){ | |
| 78 if( p->zErr && p->zErr!=p->zStaticErr ){ | |
| 79 sqlite3_free(p->zErr); | |
| 80 p->zErr = 0; | |
| 81 } | |
| 82 (*p->xOp)(p); | |
| 83 p->completed++; | |
| 84 while( p->opnum<=p->completed ) sched_yield(); | |
| 85 } | |
| 86 if( p->pStmt ){ | |
| 87 sqlite3_finalize(p->pStmt); | |
| 88 p->pStmt = 0; | |
| 89 } | |
| 90 if( p->db ){ | |
| 91 sqlite3_close(p->db); | |
| 92 p->db = 0; | |
| 93 } | |
| 94 if( p->zErr && p->zErr!=p->zStaticErr ){ | |
| 95 sqlite3_free(p->zErr); | |
| 96 p->zErr = 0; | |
| 97 } | |
| 98 p->completed++; | |
| 99 #ifndef SQLITE_OMIT_DEPRECATED | |
| 100 sqlite3_thread_cleanup(); | |
| 101 #endif | |
| 102 return 0; | |
| 103 } | |
| 104 | |
| 105 /* | |
| 106 ** Get a thread ID which is an upper case letter. Return the index. | |
| 107 ** If the argument is not a valid thread ID put an error message in | |
| 108 ** the interpreter and return -1. | |
| 109 */ | |
| 110 static int parse_thread_id(Tcl_Interp *interp, const char *zArg){ | |
| 111 if( zArg==0 || zArg[0]==0 || zArg[1]!=0 || !isupper((unsigned char)zArg[0]) ){ | |
| 112 Tcl_AppendResult(interp, "thread ID must be an upper case letter", 0); | |
| 113 return -1; | |
| 114 } | |
| 115 return zArg[0] - 'A'; | |
| 116 } | |
| 117 | |
| 118 /* | |
| 119 ** Usage: thread_create NAME FILENAME | |
| 120 ** | |
| 121 ** NAME should be an upper case letter. Start the thread running with | |
| 122 ** an open connection to the given database. | |
| 123 */ | |
| 124 static int tcl_thread_create( | |
| 125 void *NotUsed, | |
| 126 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 127 int argc, /* Number of arguments */ | |
| 128 const char **argv /* Text of each argument */ | |
| 129 ){ | |
| 130 int i; | |
| 131 pthread_t x; | |
| 132 int rc; | |
| 133 | |
| 134 if( argc!=3 ){ | |
| 135 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 136 " ID FILENAME", 0); | |
| 137 return TCL_ERROR; | |
| 138 } | |
| 139 i = parse_thread_id(interp, argv[1]); | |
| 140 if( i<0 ) return TCL_ERROR; | |
| 141 if( threadset[i].busy ){ | |
| 142 Tcl_AppendResult(interp, "thread ", argv[1], " is already running", 0); | |
| 143 return TCL_ERROR; | |
| 144 } | |
| 145 threadset[i].busy = 1; | |
| 146 sqlite3_free(threadset[i].zFilename); | |
| 147 threadset[i].zFilename = sqlite3_mprintf("%s", argv[2]); | |
| 148 threadset[i].opnum = 1; | |
| 149 threadset[i].completed = 0; | |
| 150 rc = pthread_create(&x, 0, thread_main, &threadset[i]); | |
| 151 if( rc ){ | |
| 152 Tcl_AppendResult(interp, "failed to create the thread", 0); | |
| 153 sqlite3_free(threadset[i].zFilename); | |
| 154 threadset[i].busy = 0; | |
| 155 return TCL_ERROR; | |
| 156 } | |
| 157 pthread_detach(x); | |
| 158 return TCL_OK; | |
| 159 } | |
| 160 | |
| 161 /* | |
| 162 ** Wait for a thread to reach its idle state. | |
| 163 */ | |
| 164 static void thread_wait(Thread *p){ | |
| 165 while( p->opnum>p->completed ) sched_yield(); | |
| 166 } | |
| 167 | |
| 168 /* | |
| 169 ** Usage: thread_wait ID | |
| 170 ** | |
| 171 ** Wait on thread ID to reach its idle state. | |
| 172 */ | |
| 173 static int tcl_thread_wait( | |
| 174 void *NotUsed, | |
| 175 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 176 int argc, /* Number of arguments */ | |
| 177 const char **argv /* Text of each argument */ | |
| 178 ){ | |
| 179 int i; | |
| 180 | |
| 181 if( argc!=2 ){ | |
| 182 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 183 " ID", 0); | |
| 184 return TCL_ERROR; | |
| 185 } | |
| 186 i = parse_thread_id(interp, argv[1]); | |
| 187 if( i<0 ) return TCL_ERROR; | |
| 188 if( !threadset[i].busy ){ | |
| 189 Tcl_AppendResult(interp, "no such thread", 0); | |
| 190 return TCL_ERROR; | |
| 191 } | |
| 192 thread_wait(&threadset[i]); | |
| 193 return TCL_OK; | |
| 194 } | |
| 195 | |
| 196 /* | |
| 197 ** Stop a thread. | |
| 198 */ | |
| 199 static void stop_thread(Thread *p){ | |
| 200 thread_wait(p); | |
| 201 p->xOp = 0; | |
| 202 p->opnum++; | |
| 203 thread_wait(p); | |
| 204 sqlite3_free(p->zArg); | |
| 205 p->zArg = 0; | |
| 206 sqlite3_free(p->zFilename); | |
| 207 p->zFilename = 0; | |
| 208 p->busy = 0; | |
| 209 } | |
| 210 | |
| 211 /* | |
| 212 ** Usage: thread_halt ID | |
| 213 ** | |
| 214 ** Cause a thread to shut itself down. Wait for the shutdown to be | |
| 215 ** completed. If ID is "*" then stop all threads. | |
| 216 */ | |
| 217 static int tcl_thread_halt( | |
| 218 void *NotUsed, | |
| 219 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 220 int argc, /* Number of arguments */ | |
| 221 const char **argv /* Text of each argument */ | |
| 222 ){ | |
| 223 int i; | |
| 224 | |
| 225 if( argc!=2 ){ | |
| 226 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 227 " ID", 0); | |
| 228 return TCL_ERROR; | |
| 229 } | |
| 230 if( argv[1][0]=='*' && argv[1][1]==0 ){ | |
| 231 for(i=0; i<N_THREAD; i++){ | |
| 232 if( threadset[i].busy ) stop_thread(&threadset[i]); | |
| 233 } | |
| 234 }else{ | |
| 235 i = parse_thread_id(interp, argv[1]); | |
| 236 if( i<0 ) return TCL_ERROR; | |
| 237 if( !threadset[i].busy ){ | |
| 238 Tcl_AppendResult(interp, "no such thread", 0); | |
| 239 return TCL_ERROR; | |
| 240 } | |
| 241 stop_thread(&threadset[i]); | |
| 242 } | |
| 243 return TCL_OK; | |
| 244 } | |
| 245 | |
| 246 /* | |
| 247 ** Usage: thread_argc ID | |
| 248 ** | |
| 249 ** Wait on the most recent thread_step to complete, then return the | |
| 250 ** number of columns in the result set. | |
| 251 */ | |
| 252 static int tcl_thread_argc( | |
| 253 void *NotUsed, | |
| 254 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 255 int argc, /* Number of arguments */ | |
| 256 const char **argv /* Text of each argument */ | |
| 257 ){ | |
| 258 int i; | |
| 259 char zBuf[100]; | |
| 260 | |
| 261 if( argc!=2 ){ | |
| 262 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 263 " ID", 0); | |
| 264 return TCL_ERROR; | |
| 265 } | |
| 266 i = parse_thread_id(interp, argv[1]); | |
| 267 if( i<0 ) return TCL_ERROR; | |
| 268 if( !threadset[i].busy ){ | |
| 269 Tcl_AppendResult(interp, "no such thread", 0); | |
| 270 return TCL_ERROR; | |
| 271 } | |
| 272 thread_wait(&threadset[i]); | |
| 273 sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", threadset[i].argc); | |
| 274 Tcl_AppendResult(interp, zBuf, 0); | |
| 275 return TCL_OK; | |
| 276 } | |
| 277 | |
| 278 /* | |
| 279 ** Usage: thread_argv ID N | |
| 280 ** | |
| 281 ** Wait on the most recent thread_step to complete, then return the | |
| 282 ** value of the N-th columns in the result set. | |
| 283 */ | |
| 284 static int tcl_thread_argv( | |
| 285 void *NotUsed, | |
| 286 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 287 int argc, /* Number of arguments */ | |
| 288 const char **argv /* Text of each argument */ | |
| 289 ){ | |
| 290 int i; | |
| 291 int n; | |
| 292 | |
| 293 if( argc!=3 ){ | |
| 294 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 295 " ID N", 0); | |
| 296 return TCL_ERROR; | |
| 297 } | |
| 298 i = parse_thread_id(interp, argv[1]); | |
| 299 if( i<0 ) return TCL_ERROR; | |
| 300 if( !threadset[i].busy ){ | |
| 301 Tcl_AppendResult(interp, "no such thread", 0); | |
| 302 return TCL_ERROR; | |
| 303 } | |
| 304 if( Tcl_GetInt(interp, argv[2], &n) ) return TCL_ERROR; | |
| 305 thread_wait(&threadset[i]); | |
| 306 if( n<0 || n>=threadset[i].argc ){ | |
| 307 Tcl_AppendResult(interp, "column number out of range", 0); | |
| 308 return TCL_ERROR; | |
| 309 } | |
| 310 Tcl_AppendResult(interp, threadset[i].argv[n], 0); | |
| 311 return TCL_OK; | |
| 312 } | |
| 313 | |
| 314 /* | |
| 315 ** Usage: thread_colname ID N | |
| 316 ** | |
| 317 ** Wait on the most recent thread_step to complete, then return the | |
| 318 ** name of the N-th columns in the result set. | |
| 319 */ | |
| 320 static int tcl_thread_colname( | |
| 321 void *NotUsed, | |
| 322 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 323 int argc, /* Number of arguments */ | |
| 324 const char **argv /* Text of each argument */ | |
| 325 ){ | |
| 326 int i; | |
| 327 int n; | |
| 328 | |
| 329 if( argc!=3 ){ | |
| 330 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 331 " ID N", 0); | |
| 332 return TCL_ERROR; | |
| 333 } | |
| 334 i = parse_thread_id(interp, argv[1]); | |
| 335 if( i<0 ) return TCL_ERROR; | |
| 336 if( !threadset[i].busy ){ | |
| 337 Tcl_AppendResult(interp, "no such thread", 0); | |
| 338 return TCL_ERROR; | |
| 339 } | |
| 340 if( Tcl_GetInt(interp, argv[2], &n) ) return TCL_ERROR; | |
| 341 thread_wait(&threadset[i]); | |
| 342 if( n<0 || n>=threadset[i].argc ){ | |
| 343 Tcl_AppendResult(interp, "column number out of range", 0); | |
| 344 return TCL_ERROR; | |
| 345 } | |
| 346 Tcl_AppendResult(interp, threadset[i].colv[n], 0); | |
| 347 return TCL_OK; | |
| 348 } | |
| 349 | |
| 350 /* | |
| 351 ** Usage: thread_result ID | |
| 352 ** | |
| 353 ** Wait on the most recent operation to complete, then return the | |
| 354 ** result code from that operation. | |
| 355 */ | |
| 356 static int tcl_thread_result( | |
| 357 void *NotUsed, | |
| 358 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 359 int argc, /* Number of arguments */ | |
| 360 const char **argv /* Text of each argument */ | |
| 361 ){ | |
| 362 int i; | |
| 363 const char *zName; | |
| 364 | |
| 365 if( argc!=2 ){ | |
| 366 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 367 " ID", 0); | |
| 368 return TCL_ERROR; | |
| 369 } | |
| 370 i = parse_thread_id(interp, argv[1]); | |
| 371 if( i<0 ) return TCL_ERROR; | |
| 372 if( !threadset[i].busy ){ | |
| 373 Tcl_AppendResult(interp, "no such thread", 0); | |
| 374 return TCL_ERROR; | |
| 375 } | |
| 376 thread_wait(&threadset[i]); | |
| 377 zName = sqlite3ErrName(threadset[i].rc); | |
| 378 Tcl_AppendResult(interp, zName, 0); | |
| 379 return TCL_OK; | |
| 380 } | |
| 381 | |
| 382 /* | |
| 383 ** Usage: thread_error ID | |
| 384 ** | |
| 385 ** Wait on the most recent operation to complete, then return the | |
| 386 ** error string. | |
| 387 */ | |
| 388 static int tcl_thread_error( | |
| 389 void *NotUsed, | |
| 390 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 391 int argc, /* Number of arguments */ | |
| 392 const char **argv /* Text of each argument */ | |
| 393 ){ | |
| 394 int i; | |
| 395 | |
| 396 if( argc!=2 ){ | |
| 397 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 398 " ID", 0); | |
| 399 return TCL_ERROR; | |
| 400 } | |
| 401 i = parse_thread_id(interp, argv[1]); | |
| 402 if( i<0 ) return TCL_ERROR; | |
| 403 if( !threadset[i].busy ){ | |
| 404 Tcl_AppendResult(interp, "no such thread", 0); | |
| 405 return TCL_ERROR; | |
| 406 } | |
| 407 thread_wait(&threadset[i]); | |
| 408 Tcl_AppendResult(interp, threadset[i].zErr, 0); | |
| 409 return TCL_OK; | |
| 410 } | |
| 411 | |
| 412 /* | |
| 413 ** This procedure runs in the thread to compile an SQL statement. | |
| 414 */ | |
| 415 static void do_compile(Thread *p){ | |
| 416 if( p->db==0 ){ | |
| 417 p->zErr = p->zStaticErr = "no database is open"; | |
| 418 p->rc = SQLITE_ERROR; | |
| 419 return; | |
| 420 } | |
| 421 if( p->pStmt ){ | |
| 422 sqlite3_finalize(p->pStmt); | |
| 423 p->pStmt = 0; | |
| 424 } | |
| 425 p->rc = sqlite3_prepare(p->db, p->zArg, -1, &p->pStmt, 0); | |
| 426 } | |
| 427 | |
| 428 /* | |
| 429 ** Usage: thread_compile ID SQL | |
| 430 ** | |
| 431 ** Compile a new virtual machine. | |
| 432 */ | |
| 433 static int tcl_thread_compile( | |
| 434 void *NotUsed, | |
| 435 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 436 int argc, /* Number of arguments */ | |
| 437 const char **argv /* Text of each argument */ | |
| 438 ){ | |
| 439 int i; | |
| 440 if( argc!=3 ){ | |
| 441 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 442 " ID SQL", 0); | |
| 443 return TCL_ERROR; | |
| 444 } | |
| 445 i = parse_thread_id(interp, argv[1]); | |
| 446 if( i<0 ) return TCL_ERROR; | |
| 447 if( !threadset[i].busy ){ | |
| 448 Tcl_AppendResult(interp, "no such thread", 0); | |
| 449 return TCL_ERROR; | |
| 450 } | |
| 451 thread_wait(&threadset[i]); | |
| 452 threadset[i].xOp = do_compile; | |
| 453 sqlite3_free(threadset[i].zArg); | |
| 454 threadset[i].zArg = sqlite3_mprintf("%s", argv[2]); | |
| 455 threadset[i].opnum++; | |
| 456 return TCL_OK; | |
| 457 } | |
| 458 | |
| 459 /* | |
| 460 ** This procedure runs in the thread to step the virtual machine. | |
| 461 */ | |
| 462 static void do_step(Thread *p){ | |
| 463 int i; | |
| 464 if( p->pStmt==0 ){ | |
| 465 p->zErr = p->zStaticErr = "no virtual machine available"; | |
| 466 p->rc = SQLITE_ERROR; | |
| 467 return; | |
| 468 } | |
| 469 p->rc = sqlite3_step(p->pStmt); | |
| 470 if( p->rc==SQLITE_ROW ){ | |
| 471 p->argc = sqlite3_column_count(p->pStmt); | |
| 472 for(i=0; i<sqlite3_data_count(p->pStmt); i++){ | |
| 473 p->argv[i] = (char*)sqlite3_column_text(p->pStmt, i); | |
| 474 } | |
| 475 for(i=0; i<p->argc; i++){ | |
| 476 p->colv[i] = sqlite3_column_name(p->pStmt, i); | |
| 477 } | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 /* | |
| 482 ** Usage: thread_step ID | |
| 483 ** | |
| 484 ** Advance the virtual machine by one step | |
| 485 */ | |
| 486 static int tcl_thread_step( | |
| 487 void *NotUsed, | |
| 488 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 489 int argc, /* Number of arguments */ | |
| 490 const char **argv /* Text of each argument */ | |
| 491 ){ | |
| 492 int i; | |
| 493 if( argc!=2 ){ | |
| 494 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 495 " IDL", 0); | |
| 496 return TCL_ERROR; | |
| 497 } | |
| 498 i = parse_thread_id(interp, argv[1]); | |
| 499 if( i<0 ) return TCL_ERROR; | |
| 500 if( !threadset[i].busy ){ | |
| 501 Tcl_AppendResult(interp, "no such thread", 0); | |
| 502 return TCL_ERROR; | |
| 503 } | |
| 504 thread_wait(&threadset[i]); | |
| 505 threadset[i].xOp = do_step; | |
| 506 threadset[i].opnum++; | |
| 507 return TCL_OK; | |
| 508 } | |
| 509 | |
| 510 /* | |
| 511 ** This procedure runs in the thread to finalize a virtual machine. | |
| 512 */ | |
| 513 static void do_finalize(Thread *p){ | |
| 514 if( p->pStmt==0 ){ | |
| 515 p->zErr = p->zStaticErr = "no virtual machine available"; | |
| 516 p->rc = SQLITE_ERROR; | |
| 517 return; | |
| 518 } | |
| 519 p->rc = sqlite3_finalize(p->pStmt); | |
| 520 p->pStmt = 0; | |
| 521 } | |
| 522 | |
| 523 /* | |
| 524 ** Usage: thread_finalize ID | |
| 525 ** | |
| 526 ** Finalize the virtual machine. | |
| 527 */ | |
| 528 static int tcl_thread_finalize( | |
| 529 void *NotUsed, | |
| 530 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 531 int argc, /* Number of arguments */ | |
| 532 const char **argv /* Text of each argument */ | |
| 533 ){ | |
| 534 int i; | |
| 535 if( argc!=2 ){ | |
| 536 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 537 " IDL", 0); | |
| 538 return TCL_ERROR; | |
| 539 } | |
| 540 i = parse_thread_id(interp, argv[1]); | |
| 541 if( i<0 ) return TCL_ERROR; | |
| 542 if( !threadset[i].busy ){ | |
| 543 Tcl_AppendResult(interp, "no such thread", 0); | |
| 544 return TCL_ERROR; | |
| 545 } | |
| 546 thread_wait(&threadset[i]); | |
| 547 threadset[i].xOp = do_finalize; | |
| 548 sqlite3_free(threadset[i].zArg); | |
| 549 threadset[i].zArg = 0; | |
| 550 threadset[i].opnum++; | |
| 551 return TCL_OK; | |
| 552 } | |
| 553 | |
| 554 /* | |
| 555 ** Usage: thread_swap ID ID | |
| 556 ** | |
| 557 ** Interchange the sqlite* pointer between two threads. | |
| 558 */ | |
| 559 static int tcl_thread_swap( | |
| 560 void *NotUsed, | |
| 561 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 562 int argc, /* Number of arguments */ | |
| 563 const char **argv /* Text of each argument */ | |
| 564 ){ | |
| 565 int i, j; | |
| 566 sqlite3 *temp; | |
| 567 if( argc!=3 ){ | |
| 568 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 569 " ID1 ID2", 0); | |
| 570 return TCL_ERROR; | |
| 571 } | |
| 572 i = parse_thread_id(interp, argv[1]); | |
| 573 if( i<0 ) return TCL_ERROR; | |
| 574 if( !threadset[i].busy ){ | |
| 575 Tcl_AppendResult(interp, "no such thread", 0); | |
| 576 return TCL_ERROR; | |
| 577 } | |
| 578 thread_wait(&threadset[i]); | |
| 579 j = parse_thread_id(interp, argv[2]); | |
| 580 if( j<0 ) return TCL_ERROR; | |
| 581 if( !threadset[j].busy ){ | |
| 582 Tcl_AppendResult(interp, "no such thread", 0); | |
| 583 return TCL_ERROR; | |
| 584 } | |
| 585 thread_wait(&threadset[j]); | |
| 586 temp = threadset[i].db; | |
| 587 threadset[i].db = threadset[j].db; | |
| 588 threadset[j].db = temp; | |
| 589 return TCL_OK; | |
| 590 } | |
| 591 | |
| 592 /* | |
| 593 ** Usage: thread_db_get ID | |
| 594 ** | |
| 595 ** Return the database connection pointer for the given thread. Then | |
| 596 ** remove the pointer from the thread itself. Afterwards, the thread | |
| 597 ** can be stopped and the connection can be used by the main thread. | |
| 598 */ | |
| 599 static int tcl_thread_db_get( | |
| 600 void *NotUsed, | |
| 601 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 602 int argc, /* Number of arguments */ | |
| 603 const char **argv /* Text of each argument */ | |
| 604 ){ | |
| 605 int i; | |
| 606 char zBuf[100]; | |
| 607 extern int sqlite3TestMakePointerStr(Tcl_Interp*, char*, void*); | |
| 608 if( argc!=2 ){ | |
| 609 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 610 " ID", 0); | |
| 611 return TCL_ERROR; | |
| 612 } | |
| 613 i = parse_thread_id(interp, argv[1]); | |
| 614 if( i<0 ) return TCL_ERROR; | |
| 615 if( !threadset[i].busy ){ | |
| 616 Tcl_AppendResult(interp, "no such thread", 0); | |
| 617 return TCL_ERROR; | |
| 618 } | |
| 619 thread_wait(&threadset[i]); | |
| 620 sqlite3TestMakePointerStr(interp, zBuf, threadset[i].db); | |
| 621 threadset[i].db = 0; | |
| 622 Tcl_AppendResult(interp, zBuf, (char*)0); | |
| 623 return TCL_OK; | |
| 624 } | |
| 625 | |
| 626 /* | |
| 627 ** Usage: thread_db_put ID DB | |
| 628 ** | |
| 629 */ | |
| 630 static int tcl_thread_db_put( | |
| 631 void *NotUsed, | |
| 632 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 633 int argc, /* Number of arguments */ | |
| 634 const char **argv /* Text of each argument */ | |
| 635 ){ | |
| 636 int i; | |
| 637 extern int sqlite3TestMakePointerStr(Tcl_Interp*, char*, void*); | |
| 638 extern void *sqlite3TestTextToPtr(const char *); | |
| 639 if( argc!=3 ){ | |
| 640 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 641 " ID DB", 0); | |
| 642 return TCL_ERROR; | |
| 643 } | |
| 644 i = parse_thread_id(interp, argv[1]); | |
| 645 if( i<0 ) return TCL_ERROR; | |
| 646 if( !threadset[i].busy ){ | |
| 647 Tcl_AppendResult(interp, "no such thread", 0); | |
| 648 return TCL_ERROR; | |
| 649 } | |
| 650 thread_wait(&threadset[i]); | |
| 651 assert( !threadset[i].db ); | |
| 652 threadset[i].db = (sqlite3*)sqlite3TestTextToPtr(argv[2]); | |
| 653 return TCL_OK; | |
| 654 } | |
| 655 | |
| 656 /* | |
| 657 ** Usage: thread_stmt_get ID | |
| 658 ** | |
| 659 ** Return the database stmt pointer for the given thread. Then | |
| 660 ** remove the pointer from the thread itself. | |
| 661 */ | |
| 662 static int tcl_thread_stmt_get( | |
| 663 void *NotUsed, | |
| 664 Tcl_Interp *interp, /* The TCL interpreter that invoked this command */ | |
| 665 int argc, /* Number of arguments */ | |
| 666 const char **argv /* Text of each argument */ | |
| 667 ){ | |
| 668 int i; | |
| 669 char zBuf[100]; | |
| 670 extern int sqlite3TestMakePointerStr(Tcl_Interp*, char*, void*); | |
| 671 if( argc!=2 ){ | |
| 672 Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], | |
| 673 " ID", 0); | |
| 674 return TCL_ERROR; | |
| 675 } | |
| 676 i = parse_thread_id(interp, argv[1]); | |
| 677 if( i<0 ) return TCL_ERROR; | |
| 678 if( !threadset[i].busy ){ | |
| 679 Tcl_AppendResult(interp, "no such thread", 0); | |
| 680 return TCL_ERROR; | |
| 681 } | |
| 682 thread_wait(&threadset[i]); | |
| 683 sqlite3TestMakePointerStr(interp, zBuf, threadset[i].pStmt); | |
| 684 threadset[i].pStmt = 0; | |
| 685 Tcl_AppendResult(interp, zBuf, (char*)0); | |
| 686 return TCL_OK; | |
| 687 } | |
| 688 | |
| 689 /* | |
| 690 ** Register commands with the TCL interpreter. | |
| 691 */ | |
| 692 int Sqlitetest4_Init(Tcl_Interp *interp){ | |
| 693 static struct { | |
| 694 char *zName; | |
| 695 Tcl_CmdProc *xProc; | |
| 696 } aCmd[] = { | |
| 697 { "thread_create", (Tcl_CmdProc*)tcl_thread_create }, | |
| 698 { "thread_wait", (Tcl_CmdProc*)tcl_thread_wait }, | |
| 699 { "thread_halt", (Tcl_CmdProc*)tcl_thread_halt }, | |
| 700 { "thread_argc", (Tcl_CmdProc*)tcl_thread_argc }, | |
| 701 { "thread_argv", (Tcl_CmdProc*)tcl_thread_argv }, | |
| 702 { "thread_colname", (Tcl_CmdProc*)tcl_thread_colname }, | |
| 703 { "thread_result", (Tcl_CmdProc*)tcl_thread_result }, | |
| 704 { "thread_error", (Tcl_CmdProc*)tcl_thread_error }, | |
| 705 { "thread_compile", (Tcl_CmdProc*)tcl_thread_compile }, | |
| 706 { "thread_step", (Tcl_CmdProc*)tcl_thread_step }, | |
| 707 { "thread_finalize", (Tcl_CmdProc*)tcl_thread_finalize }, | |
| 708 { "thread_swap", (Tcl_CmdProc*)tcl_thread_swap }, | |
| 709 { "thread_db_get", (Tcl_CmdProc*)tcl_thread_db_get }, | |
| 710 { "thread_db_put", (Tcl_CmdProc*)tcl_thread_db_put }, | |
| 711 { "thread_stmt_get", (Tcl_CmdProc*)tcl_thread_stmt_get }, | |
| 712 }; | |
| 713 int i; | |
| 714 | |
| 715 for(i=0; i<sizeof(aCmd)/sizeof(aCmd[0]); i++){ | |
| 716 Tcl_CreateCommand(interp, aCmd[i].zName, aCmd[i].xProc, 0, 0); | |
| 717 } | |
| 718 return TCL_OK; | |
| 719 } | |
| 720 #else | |
| 721 int Sqlitetest4_Init(Tcl_Interp *interp){ return TCL_OK; } | |
| 722 #endif /* SQLITE_OS_UNIX */ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2846743003:
[sql] Remove SQLite 3.10.2 reference directory. (Closed)
