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Add error code SQLITE_BUSY_TIMEOUT, used internally by the OS layer to indicate that a call to xShmLock() has failed due to timeout of a blocking lock.

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FossilOrigin-Name: f3ef9c7c2b4ba3de1057ad569f068b241d5f23e6629d8e0dacf85e57fd13b8aa
This commit is contained in:
dan 2020-05-06 20:27:18 +00:00
parent fc87ab8c4a
commit 7bb8b8a4f7
7 changed files with 233 additions and 108 deletions
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20
manifest
View File

@ -1,5 +1,5 @@
C Fix\scompiler\swarnings\sin\snon-SQLITE_ENABLE_SETLK_TIMEOUT\sbuilds.
D 2020-05-06T19:22:59.197
C Add\serror\scode\sSQLITE_BUSY_TIMEOUT,\sused\sinternally\sby\sthe\sOS\slayer\sto\sindicate\sthat\sa\scall\sto\sxShmLock()\shas\sfailed\sdue\sto\stimeout\sof\sa\sblocking\slock.
D 2020-05-06T20:27:18.129
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@ -474,7 +474,7 @@ F src/auth.c a3d5bfdba83d25abed1013a8c7a5f204e2e29b0c25242a56bc02bb0c07bf1e06
F src/backup.c 5e617c087f1c2d6005c2ec694ce80d6e16bc68d906e1b1c556d7c7c2228b636b
F src/bitvec.c 17ea48eff8ba979f1f5b04cc484c7bb2be632f33
F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
F src/btree.c 98e6ff5f2f0ad531bc3f7c0be1e7c8b51339b9b1badc98da141c5e0f8ed3c9b3
F src/btree.c f0cd4a3683b60f456f17e28f24cc72febc0df9c3f3f5126d799f9dc9ee5844b6
F src/btree.h 989ef3c33413549e3e148f3dcb46c030f317dac130dc86809ba6b9aa4b16c72a
F src/btreeInt.h 887cdd2ea7f4a65143074a8a7c8928b0546f8c18dda3c06a408ce7992cbab0c0
F src/build.c ec6c0bda1e43ef55e5f5121a77ba19fac51fc6585f95ce2da795bcedcf6e8f36
@ -517,7 +517,7 @@ F src/os.c 669cc3839cc35d20f81faf0be1ab6d4581cea35e9d8f3a9d48a98d6571f7c285
F src/os.h 48388821692e87da174ea198bf96b1b2d9d83be5dfc908f673ee21fafbe0d432
F src/os_common.h b2f4707a603e36811d9b1a13278bffd757857b85
F src/os_setup.h 0dbaea40a7d36bf311613d31342e0b99e2536586
F src/os_unix.c 0e1acfbb8a75f2a4acede6078b072238df63981b172a9cd16f8b090d68291c15
F src/os_unix.c ad4f910fd62b83c57dad364913d29a554a694a4461f489c2208306c63ce6eda2
F src/os_win.c 035a813cbd17f355bdcad7ab894af214a9c13a1db8aeac902365350b98cd45a7
F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
F src/pager.c 96436cb1920074d4ade120a1a8a9d0ae3f52df06651e21b7eccc5eae2f02b111
@ -535,7 +535,7 @@ F src/resolve.c d36a2b1639e1c33d7b508abfd3452a63e7fd81737f6f3940bfef085fca6f21f4
F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
F src/select.c 1720bff2168491ca79af81a03bd18c0383f61d845c6e17caff9d25aabc4ab435
F src/shell.c.in cf2d24f54412c06e5fb34af7fabc748651125e1dceac29b740e91f06d23447b6
F src/sqlite.h.in fa97fb128377b8fd8398a498eda3d48646b08519c4176adb1457243fdc5bb09a
F src/sqlite.h.in a42bae930f462294801f24468dd56832b09de01072a26dc0df60ddc3c5602210
F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
F src/sqlite3ext.h 2d1af80082edffd71c6f96f70ad1ce6a4fb46615ad10291fc77fe0dea9ff0197
F src/sqliteInt.h 26de171e0adccf6e465434b9fcce18fcfcc757e9a727356b029fc1676639540c
@ -617,7 +617,7 @@ F src/vdbetrace.c fa3bf238002f0bbbdfb66cc8afb0cea284ff9f148d6439bc1f6f2b4c3b7143
F src/vdbevtab.c 8094dfc28dad82d60a1c832020a1b201a5381dc185c14638affc6d4e9d54c653
F src/vtab.c 7b704a90515a239c6cdba6a66b1bb3a385e62326cceb5ecb05ec7a091d6b8515
F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c 24566cac365e172a893f18a83fd6da8c4b9cfbbae118831a43b4ef427e21b710
F src/wal.c f4eda6e6886da4c93e679210b14b75435d0087756644179b01896e485dd32677
F src/wal.h c3aa7825bfa2fe0d85bef2db94655f99870a285778baa36307c0a16da32b226a
F src/walker.c 7c429c694abd12413a5c17aec9f47cfe9eba6807e6b0a32df883e8e3a14835ed
F src/where.c 9546c82056e8cdb27291f98cf1adca5d271240b399bb97b32f77fc2bea6146c9
@ -1689,7 +1689,7 @@ F test/walprotocol2.test 7d3b6b4bf0b12f8007121b1e6ef714bc99101fb3b48e46371df1db8
F test/walro.test cb438d05ba0d191f10b688e39c4f0cd5b71569a1d1f4440e5bdf3c6880e08c20
F test/walro2.test 0e79dd15cbdb4f482c01ea248373669c732414a726b357d04846a816afafb768
F test/walrofault.test c70cb6e308c443867701856cce92ad8288cd99488fa52afab77cca6cfd51af68
F test/walsetlk.test e919d2aab59185a554c170599ae28d46da2f085e2026d54ee2da799f9f328478
F test/walsetlk.test 5c8bd1832a828db71283c03dc4a74d648c5333a5b2e978f5bda4f0d81bae5490
F test/walshared.test 0befc811dcf0b287efae21612304d15576e35417
F test/walslow.test c05c68d4dc2700a982f89133ce103a1a84cc285f
F test/walthread.test 14b20fcfa6ae152f5d8e12f5dc8a8a724b7ef189f5d8ef1e2ceab79f2af51747
@ -1864,7 +1864,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 105d6c9bbcadc64faa2b24e315cb13227b17cfc6bf1b3512713f80ce56976a3d
R 2005d6d3ddc777ab35d452dcb8060dbf
P 22de99ef410ba2a540871f3e61157d8dc4b969416f14808aeca73971b17fcd51
R e0fe78ea85289605bc2618d432bfef86
U dan
Z 02001fbe394dba3af87ef0d8d6630ccb
Z f7eb10852628454cfaa15a83f2d2254d

2
manifest.uuid
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@ -1 +1 @@
22de99ef410ba2a540871f3e61157d8dc4b969416f14808aeca73971b17fcd51
f3ef9c7c2b4ba3de1057ad569f068b241d5f23e6629d8e0dacf85e57fd13b8aa

15
src/btree.c
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@ -3374,6 +3374,7 @@ int sqlite3BtreeNewDb(Btree *p){
*/
int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
BtShared *pBt = p->pBt;
Pager *pPager = pBt->pPager;
int rc = SQLITE_OK;
sqlite3BtreeEnter(p);
@ -3389,7 +3390,7 @@ int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
assert( pBt->inTransaction==TRANS_WRITE || IfNotOmitAV(pBt->bDoTruncate)==0 );
if( (p->db->flags & SQLITE_ResetDatabase)
&& sqlite3PagerIsreadonly(pBt->pPager)==0
&& sqlite3PagerIsreadonly(pPager)==0
){
pBt->btsFlags &= ~BTS_READ_ONLY;
}
@ -3436,17 +3437,16 @@ int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
pBt->btsFlags &= ~BTS_INITIALLY_EMPTY;
if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY;
sqlite3PagerWalDb(pPager, p->db);
do {
Pager *pPager = pBt->pPager;
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
/* If transitioning from no transaction directly to a write transaction,
** block for the WRITER lock first if possible. */
sqlite3PagerWalDb(pPager, p->db);
if( pBt->pPage1==0 && wrflag ){
assert( pBt->inTransaction==TRANS_NONE );
rc = sqlite3PagerWalWriteLock(pPager, 1);
if( rc!=SQLITE_OK ) break;
if( rc!=SQLITE_BUSY && rc!=SQLITE_OK ) break;
}
#endif
@ -3479,9 +3479,12 @@ int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
(void)sqlite3PagerWalWriteLock(pPager, 0);
unlockBtreeIfUnused(pBt);
}
sqlite3PagerWalDb(pPager, 0);
}while( (rc&0xFF)==SQLITE_BUSY && pBt->inTransaction==TRANS_NONE &&
btreeInvokeBusyHandler(pBt) );
sqlite3PagerWalDb(pPager, 0);
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
#endif
if( rc==SQLITE_OK ){
if( p->inTrans==TRANS_NONE ){
@ -3533,7 +3536,7 @@ trans_begun:
** open savepoints. If the second parameter is greater than 0 and
** the sub-journal is not already open, then it will be opened here.
*/
rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint);
rc = sqlite3PagerOpenSavepoint(pPager, p->db->nSavepoint);
}
}

12
src/os_unix.c
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@ -1565,8 +1565,9 @@ static int osSetPosixAdvisoryLock(
struct flock *pLock, /* The description of the lock */
unixFile *pFile /* Structure holding timeout value */
){
int tm = pFile->iBusyTimeout;
int rc = osFcntl(h,F_SETLK,pLock);
while( rc<0 && pFile->iBusyTimeout>0 ){
while( rc<0 && tm>0 ){
/* On systems that support some kind of blocking file lock with a timeout,
** make appropriate changes here to invoke that blocking file lock. On
** generic posix, however, there is no such API. So we simply try the
@ -1574,7 +1575,7 @@ static int osSetPosixAdvisoryLock(
** the lock is obtained. */
usleep(1000);
rc = osFcntl(h,F_SETLK,pLock);
pFile->iBusyTimeout--;
tm--;
}
return rc;
}
@ -4316,13 +4317,16 @@ static int unixShmSystemLock(
assert( n>=1 && n<=SQLITE_SHM_NLOCK );
if( pShmNode->hShm>=0 ){
int res;
/* Initialize the locking parameters */
f.l_type = lockType;
f.l_whence = SEEK_SET;
f.l_start = ofst;
f.l_len = n;
rc = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
res = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
if( res==-1 ){
rc = (pFile->iBusyTimeout ? SQLITE_BUSY_TIMEOUT : SQLITE_BUSY);
}
}
/* Update the global lock state and do debug tracing */

1
src/sqlite.h.in
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@ -508,6 +508,7 @@ int sqlite3_exec(
#define SQLITE_LOCKED_VTAB (SQLITE_LOCKED | (2<<8))
#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8))
#define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8))
#define SQLITE_BUSY_TIMEOUT (SQLITE_BUSY | (3<<8))
#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8))
#define SQLITE_CANTOPEN_ISDIR (SQLITE_CANTOPEN | (2<<8))
#define SQLITE_CANTOPEN_FULLPATH (SQLITE_CANTOPEN | (3<<8))

182
src/wal.c
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@ -843,7 +843,7 @@ static int walLockShared(Wal *pWal, int lockIdx){
SQLITE_SHM_LOCK | SQLITE_SHM_SHARED);
WALTRACE(("WAL%p: acquire SHARED-%s %s\n", pWal,
walLockName(lockIdx), rc ? "failed" : "ok"));
VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
return rc;
}
static void walUnlockShared(Wal *pWal, int lockIdx){
@ -859,7 +859,7 @@ static int walLockExclusive(Wal *pWal, int lockIdx, int n){
SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
walLockName(lockIdx), n, rc ? "failed" : "ok"));
VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
return rc;
}
static void walUnlockExclusive(Wal *pWal, int lockIdx, int n){
@ -1679,6 +1679,89 @@ static int walIteratorInit(Wal *pWal, u32 nBackfill, WalIterator **pp){
return rc;
}
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
/*
** Attempt to enable blocking locks. Blocking locks are enabled only if (a)
** they are supported by the VFS, and (b) the database handle is configured
** with a busy-timeout. Return 1 if blocking locks are successfully enabled,
** or 0 otherwise.
*/
static int walEnableBlocking(Wal *pWal){
int res = 0;
if( pWal->db ){
int tmout = pWal->db->busyTimeout;
if( tmout ){
int rc;
rc = sqlite3OsFileControl(
pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout
);
res = (rc==SQLITE_OK);
}
}
return res;
}
/*
** Disable blocking locks.
*/
static void walDisableBlocking(Wal *pWal){
int tmout = 0;
sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout);
}
/*
** If parameter bLock is true, attempt to enable blocking locks, take
** the WRITER lock, and then disable blocking locks. If blocking locks
** cannot be enabled, no attempt to obtain the WRITER lock is made. Return
** an SQLite error code if an error occurs, or SQLITE_OK otherwise. It is not
** an error if blocking locks can not be enabled.
**
** If the bLock parameter is false and the WRITER lock is held, release it.
*/
int sqlite3WalWriteLock(Wal *pWal, int bLock){
int rc = SQLITE_OK;
assert( pWal->readLock<0 || bLock==0 );
if( bLock ){
assert( pWal->db );
if( walEnableBlocking(pWal) ){
rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
if( rc==SQLITE_OK ){
pWal->writeLock = 1;
}
walDisableBlocking(pWal);
}
}else if( pWal->writeLock ){
walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
pWal->writeLock = 0;
}
return rc;
}
/*
** Set the database handle used to determine if blocking locks are required.
*/
void sqlite3WalDb(Wal *pWal, sqlite3 *db){
pWal->db = db;
}
/*
** Take an exclusive WRITE lock. Blocking if so configured.
*/
static int walLockWriter(Wal *pWal){
int rc;
walEnableBlocking(pWal);
rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
walDisableBlocking(pWal);
return rc;
}
#else
# define walEnableBlocking(x) 0
# define walDisableBlocking(x)
# define walLockWriter(pWal) walLockExclusive((pWal), WAL_WRITE_LOCK, 1)
# define sqlite3WalDb(pWal, db)
#endif /* ifdef SQLITE_ENABLE_SETLK_TIMEOUT */
/*
** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
** n. If the attempt fails and parameter xBusy is not NULL, then it is a
@ -1696,6 +1779,12 @@ static int walBusyLock(
do {
rc = walLockExclusive(pWal, lockIdx, n);
}while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
if( rc==SQLITE_BUSY_TIMEOUT ){
walDisableBlocking(pWal);
rc = SQLITE_BUSY;
}
#endif
return rc;
}
@ -2118,88 +2207,6 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){
*/
#define WAL_RETRY (-1)
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
/*
** Attempt to enable blocking locks. Blocking locks are enabled only if (a)
** they are supported by the VFS, and (b) the database handle is configured
** with a busy-timeout. Return 1 if blocking locks are successfully enabled,
** or 0 otherwise.
*/
static int walEnableBlocking(Wal *pWal){
int res = 0;
if( pWal->db ){
int tmout = pWal->db->busyTimeout;
if( tmout ){
int rc;
rc = sqlite3OsFileControl(
pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout
);
res = (rc==SQLITE_OK);
}
}
return res;
}
/*
** Disable blocking locks.
*/
static void walDisableBlocking(Wal *pWal){
int tmout = 0;
sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout);
}
/*
** If parameter bLock is true, attempt to enable blocking locks, take
** the WRITER lock, and then disable blocking locks. If blocking locks
** cannot be enabled, no attempt to obtain the WRITER lock is made. Return
** an SQLite error code if an error occurs, or SQLITE_OK otherwise. It is not
** an error if blocking locks can not be enabled.
**
** If the bLock parameter is false and the WRITER lock is held, release it.
*/
int sqlite3WalWriteLock(Wal *pWal, int bLock){
int rc = SQLITE_OK;
assert( pWal->readLock<0 || bLock==0 );
if( bLock ){
assert( pWal->db );
if( walEnableBlocking(pWal) ){
rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
if( rc==SQLITE_OK ){
pWal->writeLock = 1;
}
walDisableBlocking(pWal);
}
}else if( pWal->writeLock ){
walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
pWal->writeLock = 0;
}
return rc;
}
/*
** Set the database handle used to determine if blocking locks are required.
*/
void sqlite3WalDb(Wal *pWal, sqlite3 *db){
pWal->db = db;
}
/*
** Take an exclusive WRITE lock. Blocking if so configured.
*/
static int walLockWriter(Wal *pWal){
int rc;
walEnableBlocking(pWal);
rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
walDisableBlocking(pWal);
return rc;
}
#else
# define walEnableBlocking(x) 0
# define walDisableBlocking(x)
# define walLockWriter(pWal) walLockExclusive((pWal), WAL_WRITE_LOCK, 1)
# define sqlite3WalDb(pWal, db)
#endif /* ifdef SQLITE_ENABLE_SETLK_TIMEOUT */
/*
** Read the wal-index header from the wal-index and into pWal->hdr.
** If the wal-header appears to be corrupt, try to reconstruct the
@ -3688,9 +3695,7 @@ int sqlite3WalCheckpoint(
/* Enable blocking locks, if possible. If blocking locks are successfully
** enabled, set xBusy2=0 so that the busy-handler is never invoked. */
sqlite3WalDb(pWal, db);
if( walEnableBlocking(pWal) ){
xBusy2 = 0;
}
walEnableBlocking(pWal);
/* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
** "checkpoint" lock on the database file.
@ -3774,6 +3779,9 @@ int sqlite3WalCheckpoint(
pWal->ckptLock = 0;
}
WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok"));
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
#endif
return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc);
}

109
test/walsetlk.test
View File

@ -12,6 +12,7 @@
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
set testprefix walsetlk
ifcapable !wal {finish_test ; return }
@ -71,5 +72,113 @@ do_test 1.8 {
file size test.db-wal
} 0
db close
db2 close
#-------------------------------------------------------------------------
do_multiclient_test tn {
do_test 2.$tn.1 {
sql1 {
PRAGMA journal_mode = wal;
CREATE TABLE t1(s, v);
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(3, 4);
INSERT INTO t1 VALUES(5, 6);
}
code1 { db timeout 2000 }
} {}
do_test 2.$tn.2 {
sql2 {
BEGIN;
INSERT INTO t1 VALUES(7, 8);
}
} {}
do_test 2.$tn.3 {
set us [lindex [time { catch {db eval "BEGIN EXCLUSIVE"} }] 0]
expr $us>1000000 && $us<4000000
} {1}
do_test 2.$tn.4 {
sql2 { COMMIT }
sql1 { SELECT * FROM t1 }
} {1 2 3 4 5 6 7 8}
do_test 2.$tn.5 {
sql2 {
BEGIN;
INSERT INTO t1 VALUES(9, 10);
}
} {}
do_test 2.$tn.6 {
set us [lindex [time { catch {db eval "PRAGMA wal_checkpoint=RESTART"} }] 0]
expr $us>1000000 && $us<4000000
} {1}
do_test 2.$tn.7 {
sql2 {
COMMIT;
BEGIN;
SELECT * FROM t1;
}
} {1 2 3 4 5 6 7 8 9 10}
do_test 2.$tn.8 {
set us [lindex [time { catch {db eval "PRAGMA wal_checkpoint=RESTART"} }] 0]
expr $us>1000000 && $us<4000000
} {1}
do_test 2.$tn.9 {
sql3 {
INSERT INTO t1 VALUES(11, 12);
}
sql2 {
COMMIT;
BEGIN;
SELECT * FROM t1;
}
sql3 {
INSERT INTO t1 VALUES(13, 14);
}
} {}
do_test 2.$tn.10 {
set us [lindex [time { catch {db eval "PRAGMA wal_checkpoint=RESTART"} }] 0]
expr $us>1000000 && $us<4000000
} {1}
do_test 2.$tn.11 {
sql3 {
BEGIN;
SELECT * FROM t1;
}
sql1 { INSERT INTO t1 VALUES(15, 16); }
} {}
do_test 2.$tn.12 {
set us [lindex [time { catch {db eval "PRAGMA wal_checkpoint=RESTART"} }] 0]
expr $us>1000000 && $us<4000000
} {1}
do_test 2.$tn.13 {
sql2 {
COMMIT;
BEGIN;
SELECT * FROM t1;
}
sql1 { INSERT INTO t1 VALUES(17, 18); }
} {}
do_test 2.$tn.14 {
set us [lindex [time { catch {db eval "PRAGMA wal_checkpoint=RESTART"} }] 0]
puts $us
expr $us>1000000 && $us<4000000
} {1}
}
finish_test