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Overview
| Comment: | Added an interrupt capability (CVS 153) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
f7ea08b931b9b40831bfe73cd7afea17 |
| User & Date: | drh 2000-10-16 22:06:41 |
Context
|
2000-10-16
| ||
| 22:06 | Added an interrupt capability (CVS 1706) check-in: fb015479 user: drh tags: trunk | |
| 22:06 | Added an interrupt capability (CVS 153) check-in: f7ea08b9 user: drh tags: trunk | |
|
2000-10-12
| ||
| 13:29 | Removed dlmalloc.c (CVS 1705) check-in: d67884f6 user: drh tags: trunk | |
Changes
Changes to VERSION.
1 -1.0.10 1 +1.0.11
Changes to src/build.c.
29 29 ** DROP TABLE 30 30 ** CREATE INDEX 31 31 ** DROP INDEX 32 32 ** creating expressions and ID lists 33 33 ** COPY 34 34 ** VACUUM 35 35 ** 36 -** $Id: build.c,v 1.23 2000/08/03 15:09:20 drh Exp $ 36 +** $Id: build.c,v 1.24 2000/10/16 22:06:42 drh Exp $ 37 37 */ 38 38 #include "sqliteInt.h" 39 39 40 40 /* 41 41 ** This routine is called after a single SQL statement has been 42 42 ** parsed and we want to execute the VDBE code to implement 43 43 ** that statement. Prior action routines should have already ................................................................................ 44 44 ** constructed VDBE code to do the work of the SQL statement. 45 45 ** This routine just has to execute the VDBE code. 46 46 ** 47 47 ** Note that if an error occurred, it might be the case that 48 48 ** no VDBE code was generated. 49 49 */ 50 50 void sqliteExec(Parse *pParse){ 51 + int rc = SQLITE_OK; 51 52 if( pParse->pVdbe ){ 52 53 if( pParse->explain ){ 53 - sqliteVdbeList(pParse->pVdbe, pParse->xCallback, pParse->pArg, 54 - &pParse->zErrMsg); 54 + rc = sqliteVdbeList(pParse->pVdbe, pParse->xCallback, pParse->pArg, 55 + &pParse->zErrMsg); 55 56 }else{ 56 57 FILE *trace = (pParse->db->flags & SQLITE_VdbeTrace)!=0 ? stderr : 0; 57 58 sqliteVdbeTrace(pParse->pVdbe, trace); 58 - sqliteVdbeExec(pParse->pVdbe, pParse->xCallback, pParse->pArg, 59 - &pParse->zErrMsg, pParse->db->pBusyArg, 60 - pParse->db->xBusyCallback); 59 + rc = sqliteVdbeExec(pParse->pVdbe, pParse->xCallback, pParse->pArg, 60 + &pParse->zErrMsg, pParse->db->pBusyArg, 61 + pParse->db->xBusyCallback); 61 62 } 62 63 sqliteVdbeDelete(pParse->pVdbe); 63 64 pParse->pVdbe = 0; 64 65 pParse->colNamesSet = 0; 66 + pParse->rc = rc; 65 67 } 66 68 } 67 69 68 70 /* 69 71 ** Construct a new expression node and return a pointer to it. 70 72 */ 71 73 Expr *sqliteExpr(int op, Expr *pLeft, Expr *pRight, Token *pToken){
Changes to src/main.c.
22 22 ** 23 23 ************************************************************************* 24 24 ** Main file for the SQLite library. The routines in this file 25 25 ** implement the programmer interface to the library. Routines in 26 26 ** other files are for internal use by SQLite and should not be 27 27 ** accessed by users of the library. 28 28 ** 29 -** $Id: main.c,v 1.19 2000/10/11 19:28:52 drh Exp $ 29 +** $Id: main.c,v 1.20 2000/10/16 22:06:42 drh Exp $ 30 30 */ 31 31 #include "sqliteInt.h" 32 32 33 33 /* 34 34 ** This is the callback routine for the code that initializes the 35 35 ** database. Each callback contains text of a CREATE TABLE or 36 36 ** CREATE INDEX statement that must be parsed to yield the internal ................................................................................ 150 150 { OP_Goto, 0, 18, 0}, 151 151 { OP_Halt, 0, 0, 0}, /* 25 */ 152 152 }; 153 153 154 154 /* Create a virtual machine to run the initialization program. Run 155 155 ** the program. The delete the virtual machine. 156 156 */ 157 - vdbe = sqliteVdbeCreate(db->pBe); 157 + vdbe = sqliteVdbeCreate(db); 158 158 if( vdbe==0 ){ 159 159 sqliteSetString(pzErrMsg, "out of memory",0); 160 160 return 1; 161 161 } 162 162 sqliteVdbeAddOpList(vdbe, sizeof(initProg)/sizeof(initProg[0]), initProg); 163 163 rc = sqliteVdbeExec(vdbe, sqliteOpenCb, db, pzErrMsg, 164 164 db->pBusyArg, db->xBusyCallback); ................................................................................ 223 223 db->file_format = 1; 224 224 225 225 /* Attempt to read the schema */ 226 226 rc = sqliteInit(db, pzErrMsg); 227 227 if( rc!=SQLITE_OK && rc!=SQLITE_BUSY ){ 228 228 sqlite_close(db); 229 229 return 0; 230 - }else{ 230 + }else /* if( pzErrMsg ) */{ 231 231 free(*pzErrMsg); 232 232 *pzErrMsg = 0; 233 233 } 234 234 return db; 235 235 } 236 236 237 237 /* ................................................................................ 307 307 int rc = sqliteInit(db, pzErrMsg); 308 308 if( rc!=SQLITE_OK ) return rc; 309 309 } 310 310 memset(&sParse, 0, sizeof(sParse)); 311 311 sParse.db = db; 312 312 sParse.xCallback = xCallback; 313 313 sParse.pArg = pArg; 314 - rc = sqliteRunParser(&sParse, zSql, pzErrMsg); 315 - sqliteStrRealloc(pzErrMsg); 316 - return rc; 314 + sqliteRunParser(&sParse, zSql, pzErrMsg); 315 + return sParse.rc; 317 316 } 318 317 319 318 /* 320 319 ** This routine implements a busy callback that sleeps and tries 321 320 ** again until a timeout value is reached. The timeout value is 322 321 ** an integer number of milliseconds passed in as the first 323 322 ** argument. ................................................................................ 378 377 void sqlite_busy_timeout(sqlite *db, int ms){ 379 378 if( ms>0 ){ 380 379 sqlite_busy_handler(db, sqlite_default_busy_callback, (void*)ms); 381 380 }else{ 382 381 sqlite_busy_handler(db, 0, 0); 383 382 } 384 383 } 384 + 385 +/* 386 +** Cause any pending operation to stop at its earliest opportunity. 387 +*/ 388 +void sqlite_interrupt(sqlite *db){ 389 + db->flags |= SQLITE_Interrupt; 390 +}
Changes to src/select.c.
20 20 ** drh@hwaci.com 21 21 ** http://www.hwaci.com/drh/ 22 22 ** 23 23 ************************************************************************* 24 24 ** This file contains C code routines that are called by the parser 25 25 ** to handle SELECT statements. 26 26 ** 27 -** $Id: select.c,v 1.26 2000/07/29 13:06:59 drh Exp $ 27 +** $Id: select.c,v 1.27 2000/10/16 22:06:42 drh Exp $ 28 28 */ 29 29 #include "sqliteInt.h" 30 30 31 31 /* 32 32 ** Allocate a new Select structure and return a pointer to that 33 33 ** structure. 34 34 */ ................................................................................ 420 420 /* 421 421 ** Get a VDBE for the given parser context. Create a new one if necessary. 422 422 ** If an error occurs, return NULL and leave a message in pParse. 423 423 */ 424 424 Vdbe *sqliteGetVdbe(Parse *pParse){ 425 425 Vdbe *v = pParse->pVdbe; 426 426 if( v==0 ){ 427 - v = pParse->pVdbe = sqliteVdbeCreate(pParse->db->pBe); 427 + v = pParse->pVdbe = sqliteVdbeCreate(pParse->db); 428 428 } 429 429 if( v==0 ){ 430 430 sqliteSetString(&pParse->zErrMsg, "out of memory", 0); 431 431 pParse->nErr++; 432 432 } 433 433 return v; 434 434 } ................................................................................ 814 814 } 815 815 } 816 816 817 817 /* Begin generating code. 818 818 */ 819 819 v = pParse->pVdbe; 820 820 if( v==0 ){ 821 - v = pParse->pVdbe = sqliteVdbeCreate(pParse->db->pBe); 821 + v = pParse->pVdbe = sqliteVdbeCreate(pParse->db); 822 822 } 823 823 if( v==0 ){ 824 824 sqliteSetString(&pParse->zErrMsg, "out of memory", 0); 825 825 pParse->nErr++; 826 826 return 1; 827 827 } 828 828 if( pOrderBy ){
Changes to src/shell.c.
20 20 ** drh@hwaci.com 21 21 ** http://www.hwaci.com/drh/ 22 22 ** 23 23 ************************************************************************* 24 24 ** This file contains code to implement the "sqlite" command line 25 25 ** utility for accessing SQLite databases. 26 26 ** 27 -** $Id: shell.c,v 1.26 2000/10/08 22:20:58 drh Exp $ 27 +** $Id: shell.c,v 1.27 2000/10/16 22:06:42 drh Exp $ 28 28 */ 29 29 #include <stdlib.h> 30 30 #include <string.h> 31 31 #include <stdio.h> 32 32 #include "sqlite.h" 33 33 #include <unistd.h> 34 34 #include <ctype.h> 35 +#ifdef OS_UNIX 36 +# include <signal.h> 37 +#endif 35 38 36 39 #if defined(HAVE_READLINE) && HAVE_READLINE==1 37 40 # include <readline/readline.h> 38 41 # include <readline/history.h> 39 42 #else 40 43 # define readline getline 41 44 # define add_history(X) 42 45 #endif 43 46 47 +/* 48 +** The following is the open SQLite database. We make a pointer 49 +** to this database a static variable so that it can be accessed 50 +** by the SIGINT handler to interrupt database processing. 51 +*/ 52 +static sqlite *db = 0; 53 + 44 54 /* 45 55 ** This routine reads a line of text from standard input, stores 46 56 ** the text in memory obtained from malloc() and returns a pointer 47 57 ** to the text. NULL is returned at end of file, or if malloc() 48 58 ** fails. 49 59 ** 50 60 ** The interface is like "readline" but no command-line editing ................................................................................ 224 234 fprintf(out,"&"); 225 235 }else{ 226 236 break; 227 237 } 228 238 z += i + 1; 229 239 } 230 240 } 241 + 242 +/* 243 +** This routine runs when the user presses Ctrl-C 244 +*/ 245 +static void interrupt_handler(int NotUsed){ 246 + if( db ) sqlite_interrupt(db); 247 +} 231 248 232 249 /* 233 250 ** This is the callback routine that the SQLite library 234 251 ** invokes for each row of a query result. 235 252 */ 236 253 static int callback(void *pArg, int nArg, char **azArg, char **azCol){ 237 254 int i; ................................................................................ 443 460 } 444 461 445 462 /* Process the input line. 446 463 */ 447 464 if( nArg==0 ) return; 448 465 n = strlen(azArg[0]); 449 466 c = azArg[0][0]; 450 - 451 467 if( c=='d' && strncmp(azArg[0], "dump", n)==0 ){ 452 468 char *zErrMsg = 0; 453 469 if( nArg==1 ){ 454 470 sqlite_exec(db, 455 471 "SELECT name, type, sql FROM sqlite_master " 456 472 "WHERE type!='meta' " 457 473 "ORDER BY tbl_name, type DESC, name", ................................................................................ 665 681 { 666 682 fprintf(stderr, "unknown command: \"%s\". Enter \".help\" for help\n", 667 683 azArg[0]); 668 684 } 669 685 } 670 686 671 687 int main(int argc, char **argv){ 672 - sqlite *db; 673 688 char *zErrMsg = 0; 674 689 char *argv0 = argv[0]; 675 690 struct callback_data data; 676 691 677 692 memset(&data, 0, sizeof(data)); 678 693 data.mode = MODE_List; 679 694 strcpy(data.separator,"|"); 680 695 data.showHeader = 0; 696 +#ifdef SIGINT 697 + signal(SIGINT, interrupt_handler); 698 +#endif 681 699 while( argc>=2 && argv[1][0]=='-' ){ 682 700 if( strcmp(argv[1],"-html")==0 ){ 683 701 data.mode = MODE_Html; 684 702 argc--; 685 703 argv++; 686 704 }else if( strcmp(argv[1],"-list")==0 ){ 687 705 data.mode = MODE_List;
Changes to src/sqlite.h.in.
20 20 ** drh@hwaci.com 21 21 ** http://www.hwaci.com/drh/ 22 22 ** 23 23 ************************************************************************* 24 24 ** This header file defines the interface that the sqlite library 25 25 ** presents to client programs. 26 26 ** 27 -** @(#) $Id: sqlite.h.in,v 1.5 2000/10/09 12:57:01 drh Exp $ 27 +** @(#) $Id: sqlite.h.in,v 1.6 2000/10/16 22:06:42 drh Exp $ 28 28 */ 29 29 #ifndef _SQLITE_H_ 30 30 #define _SQLITE_H_ 31 31 #include <stdarg.h> /* Needed for the definition of va_list */ 32 32 33 33 /* 34 34 ** The version of the SQLite library. ................................................................................ 126 126 char **errmsg /* Error msg written here */ 127 127 ); 128 128 129 129 /* 130 130 ** Return values for sqlite_exec() 131 131 */ 132 132 #define SQLITE_OK 0 /* Successful result */ 133 -#define SQLITE_INTERNAL 1 /* An internal logic error in SQLite */ 134 -#define SQLITE_ERROR 2 /* SQL error or missing database */ 133 +#define SQLITE_ERROR 1 /* SQL error or missing database */ 134 +#define SQLITE_INTERNAL 2 /* An internal logic error in SQLite */ 135 135 #define SQLITE_PERM 3 /* Access permission denied */ 136 136 #define SQLITE_ABORT 4 /* Callback routine requested an abort */ 137 137 #define SQLITE_BUSY 5 /* One or more database files are locked */ 138 138 #define SQLITE_NOMEM 6 /* A malloc() failed */ 139 139 #define SQLITE_READONLY 7 /* Attempt to write a readonly database */ 140 +#define SQLITE_INTERRUPT 8 /* Operation terminated by sqlite_interrupt() */ 141 + 142 +/* This function causes any pending database operation to abort and 143 +** return at its earliest opportunity. This routine is typically 144 +** called in response to a user include such as pressing "Cancel" 145 +** or Ctrl-C where the user wants a long query operation to halt 146 +** immediately. 147 +*/ 148 +void sqlite_interrupt(sqlite*); 149 + 140 150 141 151 /* This function returns true if the given input string comprises 142 152 ** one or more complete SQL statements. 143 153 ** 144 154 ** The algorithm is simple. If the last token other than spaces 145 155 ** and comments is a semicolon, then return true. otherwise return 146 156 ** false.
Changes to src/sqliteInt.h.
19 19 ** Author contact information: 20 20 ** drh@hwaci.com 21 21 ** http://www.hwaci.com/drh/ 22 22 ** 23 23 ************************************************************************* 24 24 ** Internal interface definitions for SQLite. 25 25 ** 26 -** @(#) $Id: sqliteInt.h,v 1.30 2000/08/28 15:51:44 drh Exp $ 26 +** @(#) $Id: sqliteInt.h,v 1.31 2000/10/16 22:06:42 drh Exp $ 27 27 */ 28 28 #include "sqlite.h" 29 29 #include "dbbe.h" 30 30 #include "vdbe.h" 31 31 #include "parse.h" 32 32 #include <gdbm.h> 33 33 #include <stdio.h> ................................................................................ 131 131 Table *apTblHash[N_HASH]; /* All tables of the database */ 132 132 Index *apIdxHash[N_HASH]; /* All indices of the database */ 133 133 }; 134 134 135 135 /* 136 136 ** Possible values for the sqlite.flags. 137 137 */ 138 -#define SQLITE_VdbeTrace 0x00000001 139 -#define SQLITE_Initialized 0x00000002 138 +#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */ 139 +#define SQLITE_Initialized 0x00000002 /* True after initialization */ 140 +#define SQLITE_Interrupt 0x00000004 /* Cancel current operation */ 140 141 141 142 /* 142 143 ** Current file format version 143 144 */ 144 145 #define SQLITE_FileFormat 2 145 146 146 147 /* ................................................................................ 321 322 }; 322 323 323 324 /* 324 325 ** An SQL parser context 325 326 */ 326 327 struct Parse { 327 328 sqlite *db; /* The main database structure */ 329 + int rc; /* Return code from execution */ 328 330 sqlite_callback xCallback; /* The callback function */ 329 331 void *pArg; /* First argument to the callback function */ 330 332 char *zErrMsg; /* An error message */ 331 333 Token sErrToken; /* The token at which the error occurred */ 332 334 Token sFirstToken; /* The first token parsed */ 333 335 Token sLastToken; /* The last token parsed */ 334 336 Table *pNewTable; /* A table being constructed by CREATE TABLE */
Changes to src/tokenize.c.
23 23 ************************************************************************* 24 24 ** An tokenizer for SQL 25 25 ** 26 26 ** This file contains C code that splits an SQL input string up into 27 27 ** individual tokens and sends those tokens one-by-one over to the 28 28 ** parser for analysis. 29 29 ** 30 -** $Id: tokenize.c,v 1.13 2000/08/09 17:17:25 drh Exp $ 30 +** $Id: tokenize.c,v 1.14 2000/10/16 22:06:42 drh Exp $ 31 31 */ 32 32 #include "sqliteInt.h" 33 33 #include <ctype.h> 34 34 #include <stdlib.h> 35 35 36 36 /* 37 37 ** All the keywords of the SQL language are stored as in a hash ................................................................................ 294 294 } 295 295 *tokenType = TK_ILLEGAL; 296 296 return 1; 297 297 } 298 298 299 299 /* 300 300 ** Run the parser on the given SQL string. The parser structure is 301 -** passed in. Return the number of errors. 301 +** passed in. An SQLITE_ status code. 302 302 */ 303 303 int sqliteRunParser(Parse *pParse, char *zSql, char **pzErrMsg){ 304 304 int nErr = 0; 305 305 int i; 306 306 void *pEngine; 307 307 int once = 1; 308 308 static FILE *trace = 0; 309 309 extern void *sqliteParserAlloc(void*(*)(int)); 310 310 extern void sqliteParserFree(void*, void(*)(void*)); 311 311 extern int sqliteParser(void*, int, ...); 312 312 extern void sqliteParserTrace(FILE*, char *); 313 313 314 + pParse->db->flags &= ~SQLITE_Interrupt; 315 + pParse->rc = SQLITE_OK; 314 316 i = 0; 315 317 sqliteParseInfoReset(pParse); 316 318 pEngine = sqliteParserAlloc((void*(*)(int))malloc); 317 319 if( pEngine==0 ){ 318 320 sqliteSetString(pzErrMsg, "out of memory", 0); 319 321 return 1; 320 322 } 321 323 sqliteParserTrace(trace, "parser: "); 322 324 while( nErr==0 && i>=0 && zSql[i]!=0 ){ 323 325 int tokenType; 324 326 327 + if( (pParse->db->flags & SQLITE_Interrupt)!=0 ){ 328 + pParse->rc = SQLITE_INTERRUPT; 329 + sqliteSetString(pzErrMsg, "interrupt", 0); 330 + break; 331 + } 325 332 pParse->sLastToken.z = &zSql[i]; 326 333 pParse->sLastToken.n = sqliteGetToken(&zSql[i], &tokenType); 327 334 i += pParse->sLastToken.n; 328 335 if( once ){ 329 336 pParse->sFirstToken = pParse->sLastToken; 330 337 once = 0; 331 338 } ................................................................................ 387 394 nErr++; 388 395 sqliteFree(pParse->zErrMsg); 389 396 pParse->zErrMsg = 0; 390 397 } 391 398 break; 392 399 } 393 400 } 394 - if( nErr==0 ){ 401 + if( nErr==0 && (pParse->db->flags & SQLITE_Interrupt)==0 ){ 395 402 sqliteParser(pEngine, 0, pParse->sLastToken, pParse); 396 403 if( pParse->zErrMsg && pParse->sErrToken.z ){ 397 404 sqliteSetNString(pzErrMsg, "near \"", -1, 398 405 pParse->sErrToken.z, pParse->sErrToken.n, 399 406 "\": ", -1, 400 407 pParse->zErrMsg, -1, 401 408 0); ................................................................................ 419 426 pParse->pVdbe = 0; 420 427 } 421 428 if( pParse->pNewTable ){ 422 429 sqliteDeleteTable(pParse->db, pParse->pNewTable); 423 430 pParse->pNewTable = 0; 424 431 } 425 432 sqliteParseInfoReset(pParse); 433 + sqliteStrRealloc(pzErrMsg); 434 + if( nErr>0 && pParse->rc==SQLITE_OK ){ 435 + pParse->rc = SQLITE_ERROR; 436 + } 426 437 return nErr; 427 438 }
Changes to src/vdbe.c.
37 37 ** inplicit conversion from one type to the other occurs as necessary. 38 38 ** 39 39 ** Most of the code in this file is taken up by the sqliteVdbeExec() 40 40 ** function which does the work of interpreting a VDBE program. 41 41 ** But other routines are also provided to help in building up 42 42 ** a program instruction by instruction. 43 43 ** 44 -** $Id: vdbe.c,v 1.42 2000/10/11 19:28:53 drh Exp $ 44 +** $Id: vdbe.c,v 1.43 2000/10/16 22:06:43 drh Exp $ 45 45 */ 46 46 #include "sqliteInt.h" 47 47 #include <unistd.h> 48 48 #include <ctype.h> 49 49 50 50 /* 51 51 ** SQL is translated into a sequence of instructions to be ................................................................................ 165 165 char zKey[1]; /* Value of this key */ 166 166 }; 167 167 168 168 /* 169 169 ** An instance of the virtual machine 170 170 */ 171 171 struct Vdbe { 172 + sqlite *db; /* The whole database */ 172 173 Dbbe *pBe; /* Opaque context structure used by DB backend */ 173 174 FILE *trace; /* Write an execution trace here, if not NULL */ 174 175 int nOp; /* Number of instructions in the program */ 175 176 int nOpAlloc; /* Number of slots allocated for aOp[] */ 176 177 Op *aOp; /* Space to hold the virtual machine's program */ 177 178 int nLabel; /* Number of labels used */ 178 179 int nLabelAlloc; /* Number of slots allocated in aLabel[] */ ................................................................................ 200 201 Set *aSet; /* An array of sets */ 201 202 int nFetch; /* Number of OP_Fetch instructions executed */ 202 203 }; 203 204 204 205 /* 205 206 ** Create a new virtual database engine. 206 207 */ 207 -Vdbe *sqliteVdbeCreate(Dbbe *pBe){ 208 +Vdbe *sqliteVdbeCreate(sqlite *db){ 208 209 Vdbe *p; 209 210 210 211 p = sqliteMalloc( sizeof(Vdbe) ); 211 - p->pBe = pBe; 212 + p->pBe = db->pBe; 213 + p->db = db; 212 214 return p; 213 215 } 214 216 215 217 /* 216 218 ** Turn tracing on or off 217 219 */ 218 220 void sqliteVdbeTrace(Vdbe *p, FILE *trace){ ................................................................................ 832 834 azValue[0] = zAddr; 833 835 azValue[2] = zP1; 834 836 azValue[3] = zP2; 835 837 azValue[5] = 0; 836 838 rc = SQLITE_OK; 837 839 /* if( pzErrMsg ){ *pzErrMsg = 0; } */ 838 840 for(i=0; rc==SQLITE_OK && i<p->nOp; i++){ 841 + if( p->db->flags & SQLITE_Interrupt ){ 842 + p->db->flags &= ~SQLITE_Interrupt; 843 + sqliteSetString(pzErrMsg, "interrupted", 0); 844 + rc = SQLITE_INTERRUPT; 845 + break; 846 + } 839 847 sprintf(zAddr,"%d",i); 840 848 sprintf(zP1,"%d", p->aOp[i].p1); 841 849 sprintf(zP2,"%d", p->aOp[i].p2); 842 850 azValue[4] = p->aOp[i].p3; 843 851 azValue[1] = zOpName[p->aOp[i].opcode]; 844 852 if( xCallback(pArg, 5, azValue, azColumnNames) ){ 845 853 rc = SQLITE_ABORT; ................................................................................ 924 932 if( access("vdbe_trace",0)==0 ){ 925 933 p->trace = stderr; 926 934 } 927 935 #endif 928 936 /* if( pzErrMsg ){ *pzErrMsg = 0; } */ 929 937 for(pc=0; rc==SQLITE_OK && pc<p->nOp && pc>=0; pc++){ 930 938 pOp = &p->aOp[pc]; 939 + 940 + /* Interrupt processing if requested. 941 + */ 942 + if( p->db->flags & SQLITE_Interrupt ){ 943 + p->db->flags &= ~SQLITE_Interrupt; 944 + rc = SQLITE_INTERRUPT; 945 + sqliteSetString(pzErrMsg, "interrupted", 0); 946 + break; 947 + } 931 948 932 949 /* Only allow tracing if NDEBUG is not defined. 933 950 */ 934 951 #ifndef NDEBUG 935 952 if( p->trace ){ 936 953 fprintf(p->trace,"%4d %-12s %4d %4d %s\n", 937 954 pc, zOpName[pOp->opcode], pOp->p1, pOp->p2,
Changes to src/vdbe.h.
23 23 ************************************************************************* 24 24 ** Header file for the Virtual DataBase Engine (VDBE) 25 25 ** 26 26 ** This header defines the interface to the virtual database engine 27 27 ** or VDBE. The VDBE implements an abstract machine that runs a 28 28 ** simple program to access and modify the underlying database. 29 29 ** 30 -** $Id: vdbe.h,v 1.13 2000/10/11 19:28:53 drh Exp $ 30 +** $Id: vdbe.h,v 1.14 2000/10/16 22:06:43 drh Exp $ 31 31 */ 32 32 #ifndef _SQLITE_VDBE_H_ 33 33 #define _SQLITE_VDBE_H_ 34 34 #include <stdio.h> 35 35 36 36 /* 37 37 ** A single VDBE is an opaque structure named "Vdbe". Only routines ................................................................................ 178 178 179 179 #define OP_MAX 90 180 180 181 181 /* 182 182 ** Prototypes for the VDBE interface. See comments on the implementation 183 183 ** for a description of what each of these routines does. 184 184 */ 185 -Vdbe *sqliteVdbeCreate(Dbbe*); 185 +Vdbe *sqliteVdbeCreate(sqlite*); 186 186 int sqliteVdbeAddOp(Vdbe*,int,int,int,const char*,int); 187 187 int sqliteVdbeAddOpList(Vdbe*, int nOp, VdbeOp const *aOp); 188 188 void sqliteVdbeChangeP3(Vdbe*, int addr, const char *zP1, int N); 189 189 void sqliteVdbeDequoteP3(Vdbe*, int addr); 190 190 int sqliteVdbeMakeLabel(Vdbe*); 191 191 void sqliteVdbeDelete(Vdbe*); 192 192 int sqliteVdbeOpcode(const char *zName);
Changes to test/dbbe.test.
19 19 # drh@hwaci.com 20 20 # http://www.hwaci.com/drh/ 21 21 # 22 22 #*********************************************************************** 23 23 # This file implements regression tests for SQLite library. The 24 24 # focus of this file is exercising the code in dbbe.c. 25 25 # 26 -# $Id: dbbe.test,v 1.3 2000/08/17 09:50:00 drh Exp $ 26 +# $Id: dbbe.test,v 1.4 2000/10/16 22:06:43 drh Exp $ 27 27 28 28 set testdir [file dirname $argv0] 29 29 source $testdir/tester.tcl 30 30 31 31 # Try to open a database that does not exist. 32 32 # 33 33 do_test dbbe-1.1 { ................................................................................ 126 126 file delete -force testdb 127 127 sqlite db testdb 0666 128 128 execsql {CREATE TABLE t1(x int)} 129 129 db close 130 130 sqlite db testdb 0444 131 131 set v [catch {execsql {INSERT INTO t1 VALUES(1)}} msg] 132 132 lappend v $msg 133 -} {1 {table t1 is readonly}} 133 +} {7 {table t1 is readonly}} 134 134 135 135 136 136 finish_test
Changes to test/lock.test.
19 19 # drh@hwaci.com 20 20 # http://www.hwaci.com/drh/ 21 21 # 22 22 #*********************************************************************** 23 23 # This file implements regression tests for SQLite library. The 24 24 # focus of this script is database locks. 25 25 # 26 -# $Id: lock.test,v 1.2 2000/08/04 13:51:11 drh Exp $ 26 +# $Id: lock.test,v 1.3 2000/10/16 22:06:43 drh Exp $ 27 27 28 28 set testdir [file dirname $argv0] 29 29 source $testdir/tester.tcl 30 30 31 31 32 32 # Create a largish table 33 33 # ................................................................................ 55 55 } {} 56 56 57 57 do_test lock-1.2 { 58 58 # Now try to update the database 59 59 # 60 60 set v [catch {execsql {UPDATE big SET f2='xyz' WHERE f1=11}} msg] 61 61 lappend v $msg 62 -} {1 {table big is locked}} 62 +} {5 {table big is locked}} 63 63 64 64 do_test lock-1.3 { 65 65 # Try to update the database in a separate process 66 66 # 67 67 set f [open update.sql w] 68 68 puts $f ".timeout 0" 69 69 puts $f "UPDATE big SET f2='xyz' WHERE f1=11;"
Changes to www/c_interface.tcl.
1 1 # 2 2 # Run this Tcl script to generate the sqlite.html file. 3 3 # 4 -set rcsid {$Id: c_interface.tcl,v 1.10 2000/10/09 12:57:01 drh Exp $} 4 +set rcsid {$Id: c_interface.tcl,v 1.11 2000/10/16 22:06:43 drh Exp $} 5 5 6 6 puts {<html> 7 7 <head> 8 8 <title>The C language interface to the SQLite library</title> 9 9 </head> 10 10 <body bgcolor=white> 11 11 <h1 align=center> ................................................................................ 63 63 char ***result, 64 64 int *nrow, 65 65 int *ncolumn, 66 66 char **errmsg 67 67 ); 68 68 69 69 void sqlite_free_table(char**); 70 + 71 +void sqlite_interrupt(sqlite*); 70 72 71 73 int sqlite_complete(const char *sql); 72 74 73 75 void sqlite_busy_handler(sqlite*, int (*)(void*,const char*,int), void*); 74 76 75 77 void sqlite_busy_timeout(sqlite*, int ms); 76 78 ................................................................................ 259 261 </p></dd> 260 262 <dt>SQLITE_READONLY</dt> 261 263 <dd><p>This return code indicates that an attempt was made to write to 262 264 a database file that was originally opened for reading only. This can 263 265 happen if the callback from a query attempts to update the table 264 266 being queried. 265 267 </p></dd> 268 +<dt>SQLITE_INTERRUPT</dt> 269 +<dd><p>This value is returned if a call to <b>sqlite_interrupt()</b> 270 +interrupts a database operation in progress. 271 +</p></dd> 266 272 </dl> 267 273 </blockquote> 268 274 269 275 <h2>Querying without using a callback function</h2> 270 276 271 277 <p>The <b>sqlite_get_table()</b> function is a wrapper around 272 278 <b>sqlite_exec()</b> that collects all the information from successive ................................................................................ 313 319 is obtained from malloc(). But the calling function should not try 314 320 to free this information directly. Instead, pass the complete table 315 321 to <b>sqlite_free_table()</b> when the table is no longer needed.</p> 316 322 317 323 <p>The <b>sqlite_get_table()</b> routine returns the same integer 318 324 result code as <b>sqlite_exec()</b>.</p> 319 325 326 +<h2>Interrupting an SQLite operation</h2> 327 + 328 +<p>The <b>sqlite_interrupt()</b> function can be called from a 329 +different thread or from a signal handler to the current database 330 +operation to exit at its first opportunity. When this happens, 331 +the <b>sqlite_exec()</b> routine (or the equivalent) that started 332 +the database operation will return SQLITE_INTERRUPT.</p> 333 + 320 334 <h2>Testing for a complete SQL statement</h2> 321 335 322 336 <p>The next interface routine to SQLite is a convenience function used 323 337 to test whether or not a string forms a complete SQL statement. 324 338 If the <b>sqlite_complete()</b> function returns true when its input 325 339 is a string, then the argument forms a complete SQL statement. 326 340 There are no guarantees that the syntax of that statement is correct,
Changes to www/changes.tcl.
13 13 14 14 15 15 proc chng {date desc} { 16 16 puts "<DT><B>$date</B></DT>" 17 17 puts "<DD><P><UL>$desc</UL></P></DD>" 18 18 } 19 19 20 -chng {2000 Oct 11 (Not Released)} { 20 +chng {2000 Oct 16 (1.0.11) 21 +<li>Added the <b>sqlite_interrupt()</b> interface.</li> 22 +<li>In the shell, <b>sqlite_interrupt()</b> is invoked when the 23 + user presses Control-C</li> 24 +<li>Fixed bugs in the return value of <b>sqlite_exec()</b>.</li> 25 +} 26 + 27 +chng {2000 Oct 11 (1.0.10) 21 28 <li>Added notes on how to compile for Windows95/98.</li> 22 29 <li>Add Doug Lea's memory allocator to the distribution, for completeness.</li> 23 30 <li>Removed a few variables that were not being used. Etc.</li> 24 31 } 25 32 26 33 chng {2000 Oct 8 (1.0.9)} { 27 34 <li>Added the <b>sqlite_..._printf()</b> interface routines.</li>