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authorRusty Russell <rusty@rustcorp.com.au>2011-09-14 07:33:13 +0930
committerRusty Russell <rusty@rustcorp.com.au>2011-09-14 07:33:13 +0930
commitebb3017cf08cc4dad3217db6cea404069b494b47 (patch)
treefd4ce2c81bc4d7f513aea07f02d289b5daa94f1a /lib/tdb2/tdb1_lock.c
parente613effeae7c9373c9e635fc708ec2ce29661d4c (diff)
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tdb2: Make tdb1 share tdb_store flags, struct tdb_data and TDB_MAGIC_FOOD.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (Imported from CCAN commit 8a47d50d72ea62e378dc92b150c92c1317c73fa3)
Diffstat (limited to 'lib/tdb2/tdb1_lock.c')
-rw-r--r--lib/tdb2/tdb1_lock.c44
1 files changed, 22 insertions, 22 deletions
diff --git a/lib/tdb2/tdb1_lock.c b/lib/tdb2/tdb1_lock.c
index 68f394aad2..c427804893 100644
--- a/lib/tdb2/tdb1_lock.c
+++ b/lib/tdb2/tdb1_lock.c
@@ -130,7 +130,7 @@ static tdb1_off_t lock_offset(int list)
*/
int tdb1_brlock(struct tdb1_context *tdb,
int rw_type, tdb1_off_t offset, size_t len,
- enum tdb1_lock_flags flags)
+ enum tdb_lock_flags flags)
{
int ret;
@@ -145,7 +145,7 @@ int tdb1_brlock(struct tdb1_context *tdb,
do {
ret = fcntl_lock(tdb, rw_type, offset, len,
- flags & TDB1_LOCK_WAIT);
+ flags & TDB_LOCK_WAIT);
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
@@ -153,7 +153,7 @@ int tdb1_brlock(struct tdb1_context *tdb,
/* Generic lock error. errno set by fcntl.
* EAGAIN is an expected return from non-blocking
* locks. */
- if (!(flags & TDB1_LOCK_PROBE) && errno != EAGAIN) {
+ if (!(flags & TDB_LOCK_PROBE) && errno != EAGAIN) {
tdb_logerr(tdb, TDB_ERR_LOCK, TDB_LOG_ERROR,
"tdb1_brlock failed (fd=%d) at offset %d rw_type=%d flags=%d len=%d",
tdb->fd, offset, rw_type, flags, (int)len);
@@ -213,7 +213,7 @@ int tdb1_allrecord_upgrade(struct tdb1_context *tdb)
while (count--) {
struct timeval tv;
if (tdb1_brlock(tdb, F_WRLCK, TDB1_FREELIST_TOP, 0,
- TDB1_LOCK_WAIT|TDB1_LOCK_PROBE) == 0) {
+ TDB_LOCK_WAIT|TDB_LOCK_PROBE) == 0) {
tdb->allrecord_lock.ltype = F_WRLCK;
tdb->allrecord_lock.off = 0;
return 0;
@@ -246,7 +246,7 @@ static struct tdb1_lock_type *tdb1_find_nestlock(struct tdb1_context *tdb,
/* lock an offset in the database. */
int tdb1_nest_lock(struct tdb1_context *tdb, uint32_t offset, int ltype,
- enum tdb1_lock_flags flags)
+ enum tdb_lock_flags flags)
{
struct tdb1_lock_type *new_lck;
@@ -298,11 +298,11 @@ static int tdb1_lock_and_recover(struct tdb1_context *tdb)
int ret;
/* We need to match locking order in transaction commit. */
- if (tdb1_brlock(tdb, F_WRLCK, TDB1_FREELIST_TOP, 0, TDB1_LOCK_WAIT)) {
+ if (tdb1_brlock(tdb, F_WRLCK, TDB1_FREELIST_TOP, 0, TDB_LOCK_WAIT)) {
return -1;
}
- if (tdb1_brlock(tdb, F_WRLCK, TDB1_OPEN_LOCK, 1, TDB1_LOCK_WAIT)) {
+ if (tdb1_brlock(tdb, F_WRLCK, TDB1_OPEN_LOCK, 1, TDB_LOCK_WAIT)) {
tdb1_brunlock(tdb, F_WRLCK, TDB1_FREELIST_TOP, 0);
return -1;
}
@@ -327,7 +327,7 @@ static bool have_data_locks(const struct tdb1_context *tdb)
}
static int tdb1_lock_list(struct tdb1_context *tdb, int list, int ltype,
- enum tdb1_lock_flags waitflag)
+ enum tdb_lock_flags waitflag)
{
int ret;
bool check = false;
@@ -363,7 +363,7 @@ int tdb1_lock(struct tdb1_context *tdb, int list, int ltype)
{
int ret;
- ret = tdb1_lock_list(tdb, list, ltype, TDB1_LOCK_WAIT);
+ ret = tdb1_lock_list(tdb, list, ltype, TDB_LOCK_WAIT);
if (ret) {
tdb_logerr(tdb, tdb->last_error, TDB_LOG_ERROR,
"tdb1_lock failed on list %d "
@@ -447,7 +447,7 @@ int tdb1_unlock(struct tdb1_context *tdb, int list, int ltype)
get the transaction lock
*/
int tdb1_transaction_lock(struct tdb1_context *tdb, int ltype,
- enum tdb1_lock_flags lockflags)
+ enum tdb_lock_flags lockflags)
{
return tdb1_nest_lock(tdb, TDB1_TRANSACTION_LOCK, ltype, lockflags);
}
@@ -462,7 +462,7 @@ int tdb1_transaction_unlock(struct tdb1_context *tdb, int ltype)
/* Returns 0 if all done, -1 if error, 1 if ok. */
static int tdb1_allrecord_check(struct tdb1_context *tdb, int ltype,
- enum tdb1_lock_flags flags, bool upgradable)
+ enum tdb_lock_flags flags, bool upgradable)
{
/* There are no locks on read-only dbs */
if (tdb->read_only || tdb->traverse_read) {
@@ -498,11 +498,11 @@ static int tdb1_allrecord_check(struct tdb1_context *tdb, int ltype,
/* We only need to lock individual bytes, but Linux merges consecutive locks
* so we lock in contiguous ranges. */
static int tdb1_chainlock_gradual(struct tdb1_context *tdb,
- int ltype, enum tdb1_lock_flags flags,
+ int ltype, enum tdb_lock_flags flags,
size_t off, size_t len)
{
int ret;
- enum tdb1_lock_flags nb_flags = (flags & ~TDB1_LOCK_WAIT);
+ enum tdb_lock_flags nb_flags = (flags & ~TDB_LOCK_WAIT);
if (len <= 4) {
/* Single record. Just do blocking lock. */
@@ -533,7 +533,7 @@ static int tdb1_chainlock_gradual(struct tdb1_context *tdb,
* other way of guaranteeing exclusivity (ie. transaction write lock).
* We do the locking gradually to avoid being starved by smaller locks. */
int tdb1_allrecord_lock(struct tdb1_context *tdb, int ltype,
- enum tdb1_lock_flags flags, bool upgradable)
+ enum tdb_lock_flags flags, bool upgradable)
{
switch (tdb1_allrecord_check(tdb, ltype, flags, upgradable)) {
case -1:
@@ -622,7 +622,7 @@ int tdb1_allrecord_unlock(struct tdb1_context *tdb, int ltype)
/* lock entire database with write lock */
int tdb1_lockall(struct tdb1_context *tdb)
{
- return tdb1_allrecord_lock(tdb, F_WRLCK, TDB1_LOCK_WAIT, false);
+ return tdb1_allrecord_lock(tdb, F_WRLCK, TDB_LOCK_WAIT, false);
}
/* unlock entire database with write lock */
@@ -634,7 +634,7 @@ int tdb1_unlockall(struct tdb1_context *tdb)
/* lock entire database with read lock */
int tdb1_lockall_read(struct tdb1_context *tdb)
{
- return tdb1_allrecord_lock(tdb, F_RDLCK, TDB1_LOCK_WAIT, false);
+ return tdb1_allrecord_lock(tdb, F_RDLCK, TDB_LOCK_WAIT, false);
}
/* unlock entire database with read lock */
@@ -645,25 +645,25 @@ int tdb1_unlockall_read(struct tdb1_context *tdb)
/* lock/unlock one hash chain. This is meant to be used to reduce
contention - it cannot guarantee how many records will be locked */
-int tdb1_chainlock(struct tdb1_context *tdb, TDB1_DATA key)
+int tdb1_chainlock(struct tdb1_context *tdb, TDB_DATA key)
{
int ret = tdb1_lock(tdb, TDB1_BUCKET(tdb->hash_fn(&key)), F_WRLCK);
return ret;
}
-int tdb1_chainunlock(struct tdb1_context *tdb, TDB1_DATA key)
+int tdb1_chainunlock(struct tdb1_context *tdb, TDB_DATA key)
{
return tdb1_unlock(tdb, TDB1_BUCKET(tdb->hash_fn(&key)), F_WRLCK);
}
-int tdb1_chainlock_read(struct tdb1_context *tdb, TDB1_DATA key)
+int tdb1_chainlock_read(struct tdb1_context *tdb, TDB_DATA key)
{
int ret;
ret = tdb1_lock(tdb, TDB1_BUCKET(tdb->hash_fn(&key)), F_RDLCK);
return ret;
}
-int tdb1_chainunlock_read(struct tdb1_context *tdb, TDB1_DATA key)
+int tdb1_chainunlock_read(struct tdb1_context *tdb, TDB_DATA key)
{
return tdb1_unlock(tdb, TDB1_BUCKET(tdb->hash_fn(&key)), F_RDLCK);
}
@@ -674,7 +674,7 @@ int tdb1_lock_record(struct tdb1_context *tdb, tdb1_off_t off)
if (tdb->allrecord_lock.count) {
return 0;
}
- return off ? tdb1_brlock(tdb, F_RDLCK, off, 1, TDB1_LOCK_WAIT) : 0;
+ return off ? tdb1_brlock(tdb, F_RDLCK, off, 1, TDB_LOCK_WAIT) : 0;
}
/*
@@ -694,7 +694,7 @@ int tdb1_write_lock_record(struct tdb1_context *tdb, tdb1_off_t off)
}
return -1;
}
- return tdb1_brlock(tdb, F_WRLCK, off, 1, TDB1_LOCK_NOWAIT|TDB1_LOCK_PROBE);
+ return tdb1_brlock(tdb, F_WRLCK, off, 1, TDB_LOCK_NOWAIT|TDB_LOCK_PROBE);
}
int tdb1_write_unlock_record(struct tdb1_context *tdb, tdb1_off_t off)