1 /* this tests tdb by doing lots of ops from several simultaneous
2 writers - that stresses the locking code. Build with TDB_DEBUG=1
24 #include "system/time.h"
28 #define REOPEN_PROB 30
32 #define LOCKSTORE_PROB 0
33 #define TRAVERSE_PROB 20
39 static TDB_CONTEXT *db;
41 #ifdef PRINTF_ATTRIBUTE
42 static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
44 static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
49 vfprintf(stdout, format, ap);
55 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
62 static void fatal(const char *why)
68 static char *randbuf(int len)
72 buf = (char *)malloc(len+1);
75 buf[i] = 'a' + (rand() % 26);
81 static int cull_traverse(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
84 if (random() % CULL_PROB == 0) {
90 static void addrec_db(void)
94 TDB_DATA key, data, lockkey;
96 klen = 1 + (rand() % KEYLEN);
97 dlen = 1 + (rand() % DATALEN);
98 slen = 1 + (rand() % LOCKLEN);
111 lockkey.dsize = slen+1;
114 if (random() % REOPEN_PROB == 0) {
121 if (random() % DELETE_PROB == 0) {
128 if (random() % STORE_PROB == 0) {
129 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
130 fatal("tdb_store failed");
137 if (random() % APPEND_PROB == 0) {
138 if (tdb_append(db, key, data) != 0) {
139 fatal("tdb_append failed");
146 if (random() % LOCKSTORE_PROB == 0) {
147 tdb_chainlock(db, lockkey);
148 data = tdb_fetch(db, key);
149 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
150 fatal("tdb_store failed");
152 if (data.dptr) free(data.dptr);
153 tdb_chainunlock(db, lockkey);
159 if (random() % TRAVERSE_PROB == 0) {
160 tdb_traverse(db, cull_traverse, NULL);
165 data = tdb_fetch(db, key);
166 if (data.dptr) free(data.dptr);
174 static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
177 tdb_delete(tdb, key);
186 #define NLOOPS 200000
189 int main(int argc, const char *argv[])
197 for (i=0;i<NPROC-1;i++) {
198 if ((pids[i+1]=fork()) == 0) break;
201 db = tdb_open("torture.tdb", 2, TDB_CLEAR_IF_FIRST,
202 O_RDWR | O_CREAT, 0600);
204 fatal("db open failed");
206 tdb_logging_function(db, tdb_log);
208 srand(seed + getpid());
209 srandom(seed + getpid() + time(NULL));
210 for (i=0;i<loops;i++) addrec_db();
212 tdb_traverse(db, NULL, NULL);
213 tdb_traverse(db, traverse_fn, NULL);
214 tdb_traverse(db, traverse_fn, NULL);
218 if (getpid() == pids[0]) {
219 for (i=0;i<NPROC-1;i++) {
221 if (sys_waitpid(pids[i+1], &status, 0) != pids[i+1]) {
222 printf("failed to wait for %d\n",
226 if (WEXITSTATUS(status) != 0) {
227 printf("child %d exited with status %d\n",
228 (int)pids[i+1], WEXITSTATUS(status));