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| (Empty) |
| 1 /* | |
| 2 ** This program tests the ability of SQLite database to recover from a crash. | |
| 3 ** This program runs under Unix only, but the results are applicable to all | |
| 4 ** systems. | |
| 5 ** | |
| 6 ** The main process first constructs a test database, then starts creating | |
| 7 ** subprocesses that write to that database. Each subprocess is killed off, | |
| 8 ** without a chance to clean up its database connection, after a random | |
| 9 ** delay. This killing of the subprocesses simulates a crash or power | |
| 10 ** failure. The next subprocess to open the database should rollback | |
| 11 ** whatever operation was in process at the time of the simulated crash. | |
| 12 ** | |
| 13 ** If any problems are encountered, an error is reported and the test stops. | |
| 14 ** If no problems are seen after a large number of tests, we assume that | |
| 15 ** the rollback mechanism is working. | |
| 16 */ | |
| 17 #include <stdio.h> | |
| 18 #include <unistd.h> | |
| 19 #include <sys/types.h> | |
| 20 #include <sys/wait.h> | |
| 21 #include <signal.h> | |
| 22 #include <stdlib.h> | |
| 23 #include <string.h> | |
| 24 #include <sched.h> | |
| 25 #include "sqlite.h" | |
| 26 | |
| 27 static void do_some_sql(int parent){ | |
| 28 char *zErr; | |
| 29 int rc = SQLITE_OK; | |
| 30 sqlite *db; | |
| 31 int cnt = 0; | |
| 32 static char zBig[] = | |
| 33 "-abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 34 "-abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; | |
| 35 | |
| 36 if( access("./test.db-journal",0)==0 ){ | |
| 37 /*printf("pid %d: journal exists. rollback will be required\n",getpid());*/
unlink("test.db-saved"); | |
| 38 system("cp test.db test.db-saved"); | |
| 39 unlink("test.db-journal-saved"); | |
| 40 system("cp test.db-journal test.db-journal-saved"); | |
| 41 } | |
| 42 db = sqlite_open("./test.db", 0, &zErr); | |
| 43 if( db==0 ){ | |
| 44 printf("ERROR: %s\n", zErr); | |
| 45 if( strcmp(zErr,"database disk image is malformed")==0 ){ | |
| 46 kill(parent, SIGKILL); | |
| 47 } | |
| 48 exit(1); | |
| 49 } | |
| 50 srand(getpid()); | |
| 51 while( rc==SQLITE_OK ){ | |
| 52 cnt++; | |
| 53 rc = sqlite_exec_printf(db, | |
| 54 "INSERT INTO t1 VALUES(%d,'%d%s')", 0, 0, &zErr, | |
| 55 rand(), rand(), zBig); | |
| 56 } | |
| 57 if( rc!=SQLITE_OK ){ | |
| 58 printf("ERROR #%d: %s\n", rc, zErr); | |
| 59 if( rc==SQLITE_CORRUPT ){ | |
| 60 kill(parent, SIGKILL); | |
| 61 } | |
| 62 } | |
| 63 printf("pid %d: cnt=%d\n", getpid(), cnt); | |
| 64 } | |
| 65 | |
| 66 | |
| 67 int main(int argc, char **argv){ | |
| 68 int i; | |
| 69 sqlite *db; | |
| 70 char *zErr; | |
| 71 int status; | |
| 72 int parent = getpid(); | |
| 73 | |
| 74 unlink("test.db"); | |
| 75 unlink("test.db-journal"); | |
| 76 db = sqlite_open("test.db", 0, &zErr); | |
| 77 if( db==0 ){ | |
| 78 printf("Cannot initialize: %s\n", zErr); | |
| 79 return 1; | |
| 80 } | |
| 81 sqlite_exec(db, "CREATE TABLE t1(a,b)", 0, 0, 0); | |
| 82 sqlite_close(db); | |
| 83 for(i=0; i<10000; i++){ | |
| 84 int pid = fork(); | |
| 85 if( pid==0 ){ | |
| 86 sched_yield(); | |
| 87 do_some_sql(parent); | |
| 88 return 0; | |
| 89 } | |
| 90 printf("test %d, pid=%d\n", i, pid); | |
| 91 usleep(rand()%10000 + 1000); | |
| 92 kill(pid, SIGKILL); | |
| 93 waitpid(pid, &status, 0); | |
| 94 } | |
| 95 return 0; | |
| 96 } | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
